.forgejo/workflows/commit.yml

@@ -1,104 +1,125 @@
-name: "PRs & Pushes"
+name: build-and-test
 
 on:
-  - push
+ - pull_request
-  - pull_request
+ - push
 
 jobs:
-  build:
+ build:
-    runs-on: docker
+  runs-on: docker
-    container:
+  container:
-      image: git.staropensource.de/infrastructure/actions-docker:java
+   image: git.staropensource.de/infrastructure/actions-docker:java
-    steps:
+  steps:
-      - name: Checkout
+   - name: Checkout
-        uses: https://code.forgejo.org/actions/checkout@v4
+     uses: https://code.forgejo.org/actions/checkout@v4
-      - name: Restore Gradle cache
+   - name: Restore Gradle cache
-        uses: actions/cache/restore@v4
+     uses: actions/cache/restore@v4
-        with:
+     with:
-          path: |
+      path: |
-            ~/.gradle/caches
+        ~/.gradle/caches
-            ~/.gradle/wrapper
+        ~/.gradle/wrapper
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
-          restore-keys: |
+      restore-keys: |
-            gradle-${{ runner.os }}-
+        gradle-${{ runner.os }}-
-      - name: Compile
+   - name: Compile
-        run: ./gradlew --no-daemon -Pjava.skipToolchainSpecification=true jar
+     run: ./gradlew --no-daemon jar javadocJar sourceJar
-      - name: Save Gradle cache
+   - name: Save Gradle cache
-        uses: actions/cache/save@v4
+     uses: actions/cache/save@v4
-        with:
+     with:
-          path: |
+      path: |
-            ~/.gradle/caches
+        ~/.gradle/caches
-            ~/.gradle/wrapper
+        ~/.gradle/wrapper
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
-          restore-keys: |
+      restore-keys: |
-            gradle-${{ runner.os }}-
+        gradle-${{ runner.os }}-
-      - name: Upload JARs
+   - name: Upload library JARs
-        uses: https://code.forgejo.org/forgejo/upload-artifact@v4
+     uses: https://code.forgejo.org/forgejo/upload-artifact@v4
-        with:
+     with:
-          name: jars
+      name: jars-libraries
-          path: |
+      path: |
-            **/build/libs/*.jar
+        **/build/libs/*.jar
-          if-no-files-found: error
+        !**/build/libs/*-javadoc.jar
-  test:
+        !**/build/libs/*-sources.jar
-    runs-on: docker
+      if-no-files-found: error
-    container:
+   - name: Upload API documentation JARs
-      image: git.staropensource.de/infrastructure/actions-docker:java
+     uses: https://code.forgejo.org/forgejo/upload-artifact@v4
-    steps:
+     with:
-      - name: Checkout
+      name: jars-apidocs
-        uses: https://code.forgejo.org/actions/checkout@v4
+      path: |
-      - name: Restore Gradle cache
+        **/build/libs/*-javadoc.jar
-        uses: actions/cache/restore@v4
+      if-no-files-found: error
-        with:
+   - name: Upload source JARs
-          path: |
+     uses: https://code.forgejo.org/forgejo/upload-artifact@v4
-            ~/.gradle/caches
+     with:
-            ~/.gradle/wrapper
+      name: jars-sources
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      path: |
-          restore-keys: |
+        **/build/libs/*-sources.jar
-            gradle-${{ runner.os }}-
+      if-no-files-found: error
-      - name: Run tests
+ generate-javadoc:
-        run: ./gradlew --no-daemon -Pjava.skipToolchainSpecification=true test
+  runs-on: docker
-      - name: Save Gradle cache
+  container:
-        uses: actions/cache/save@v4
+   image: git.staropensource.de/infrastructure/actions-docker:java
-        with:
+  steps:
-          path: |
+   - name: Checkout
-            ~/.gradle/caches
+     uses: https://code.forgejo.org/actions/checkout@v4
-            ~/.gradle/wrapper
+   - name: Restore Gradle cache
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+     uses: actions/cache/restore@v4
-          restore-keys: |
+     with:   
-            gradle-${{ runner.os }}-
+      path: |
-  build-apidoc:
+        ~/.gradle/caches 
-    runs-on: docker
+        ~/.gradle/wrapper      
-    container:
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
-      image: git.staropensource.de/infrastructure/actions-docker:java
+      restore-keys: |
-    steps:
+        gradle-${{ runner.os }}-
-      - name: Checkout
+   - name: Generate javadoc
-        uses: https://code.forgejo.org/actions/checkout@v4
+     run: ./gradlew --no-daemon javadoc javadocAll
-      - name: Restore Gradle cache
+   - name: Save Gradle cache
-        uses: actions/cache/restore@v4
+     uses: actions/cache/save@v4
-        with:
+     with:
-          path: |
+      path: |
-            ~/.gradle/caches
+        ~/.gradle/caches
-            ~/.gradle/wrapper
+        ~/.gradle/wrapper
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
-          restore-keys: |
+      restore-keys: |
-            gradle-${{ runner.os }}-
+        gradle-${{ runner.os }}-
-      - name: Compile
+   - name: Upload separate javadoc
-        run: ./gradlew --no-daemon -Pjava.skipToolchainSpecification=true dokkaHtml dokkaHtmlMultiModule dokkaHtmlJar dokkaJavadocJar
+     uses: https://code.forgejo.org/forgejo/upload-artifact@v4
-      - name: Save Gradle cache
+     with:
-        uses: actions/cache/save@v4
+      name: javadoc-separate
-        with:
+      path: |
-          path: |
+        **/build/docs/javadoc/*
-            ~/.gradle/caches
+      if-no-files-found: error
-            ~/.gradle/wrapper
+   - name: Upload combined javadoc
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+     uses: https://code.forgejo.org/forgejo/upload-artifact@v4
-          restore-keys: |
+     with:  
-            gradle-${{ runner.os }}-
+      name: javadoc-combined
-      - name: Upload JARs
+      path: |
-        uses: https://code.forgejo.org/forgejo/upload-artifact@v4
+        build/docs/javadoc/*
-        with:
+      if-no-files-found: error
-          name: apidoc
+ test:
-          path: |
+  runs-on: docker
-            build/dokka/htmlMultiModule
+  container:
-            **/build/dokka/html
+   image: git.staropensource.de/infrastructure/actions-docker:java
-            **/build/libs/*.jar
+  steps:
-          if-no-files-found: error
+   - name: Checkout
+     uses: https://code.forgejo.org/actions/checkout@v4
+   - name: Restore Gradle cache
+     uses: actions/cache/restore@v4
+     with:   
+      path: |
+        ~/.gradle/caches 
+        ~/.gradle/wrapper      
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      restore-keys: |
+        gradle-${{ runner.os }}-
+   - name: Run tests
+     run: ./gradlew --no-daemon test
+   - name: Save Gradle cache
+     uses: actions/cache/save@v4
+     with:
+      path: |
+        ~/.gradle/caches
+        ~/.gradle/wrapper
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      restore-keys: |
+        gradle-${{ runner.os }}-

.forgejo/workflows/pullrequest.yml

@@ -0,0 +1,60 @@
+name: build-and-test
+
+on:
+ - pull_request
+
+jobs:
+ generate-javadoc:
+  runs-on: docker
+  container:
+   image: git.staropensource.de/infrastructure/actions-docker:java
+  steps:
+   - name: Checkout
+     uses: https://code.forgejo.org/actions/checkout@v4
+   - name: Restore Gradle cache
+     uses: actions/cache/restore@v4
+     with:
+      path: |
+        ~/.gradle/caches
+        ~/.gradle/wrapper
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      restore-keys: |
+        gradle-${{ runner.os }}-
+   - name: Generate javadoc
+     run: ./gradlew --no-daemon javadoc
+   - name: Save Gradle cache
+     uses: actions/cache/save@v4
+     with:
+      path: |
+        ~/.gradle/caches
+        ~/.gradle/wrapper
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      restore-keys: |
+        gradle-${{ runner.os }}-
+ test:
+  runs-on: docker
+  container:
+   image: git.staropensource.de/infrastructure/actions-docker:java
+  steps:
+   - name: Checkout
+     uses: https://code.forgejo.org/actions/checkout@v4
+   - name: Restore Gradle cache
+     uses: actions/cache/restore@v4
+     with:
+      path: |
+        ~/.gradle/caches
+        ~/.gradle/wrapper
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      restore-keys: |
+        gradle-${{ runner.os }}-
+   - name: Run tests
+     run: ./gradlew --no-daemon test
+   - name: Save Gradle cache
+     uses: actions/cache/save@v4
+     with:
+      path: |
+        ~/.gradle/caches
+        ~/.gradle/wrapper
+      key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+      restore-keys: |
+        gradle-${{ runner.os }}-

.gitattributes

@@ -1,19 +1,15 @@
-# Linguist metadata
+# Documentation
-# -> Documentation
 *.md          linguist-documentation
 docs/*        linguist-documentation
-# -> Licensing information
+
+# Licensing information
 COPYING       linguist-documentation
 LICENSE       linguist-documentation
-# -> HTML, CSS, etc.
+
+# Javadoc
 *.html        linguist-documentation
 *.css         linguist-documentation
-# -> Configuration
+
+# Gradle configuration
 *.properties  linguist-configuration
 *.gradle      linguist-configuration
-
-# Line endings
-/gradlew        text eol=lf
-*.bat           text eol=crlf
-*.cmd           text oel=crlf
-*.jar           binary

.gitignore

@@ -1,4 +1,4 @@
-# Gradle
+### Gradle ###
 .gradle
 build/
 run/
@@ -6,7 +6,7 @@ run/
 !**/src/main/**/build/
 !**/src/test/**/build/
 
-# IntelliJ IDEA
+### IntelliJ IDEA ###
 .idea/modules.xml
 .idea/jarRepositories.xml
 .idea/compiler.xml
@@ -19,7 +19,7 @@ out/
 !**/src/main/**/out/
 !**/src/test/**/out/
 
-# Eclipse
+### Eclipse ###
 .apt_generated
 .classpath
 .factorypath
@@ -31,18 +31,17 @@ bin/
 !**/src/main/**/bin/
 !**/src/test/**/bin/
 
-# NetBeans
+### NetBeans ###
 /nbproject/private/
 /nbbuild/
 /nbdist/
 /.nb-gradle/
 
-# Visual Studio Code
+### VS Code ###
 .vscode/
 
-# macOS
+### Mac OS ###
 .DS_Store
 
-# Java & Kotlin
+### Java ###
 hs_err_pid*.log
-.kotlin

.idea/copyright/sos_engine.xml

@@ -1,7 +1,7 @@
 <component name="CopyrightManager">
   <copyright>
     <option name="allowReplaceRegexp" value="Copyright .* The StarOpenSource Engine Authors" />
-    <option name="notice" value="STAROPENSOURCE ENGINE SOURCE FILE&#10;Copyright (c) &amp;#36;today.year The StarOpenSource Engine Authors&#10;Licensed under the GNU General Public License v3.&#10;&#10;This program is free software: you can redistribute it and/or modify&#10;it under the terms of the GNU General Public License as&#10;published by the Free Software Foundation, either version 3 of the&#10;License, or (at your option) any later version.&#10;&#10;This program is distributed in the hope that it will be useful,&#10;but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;GNU Affero General Public License for more details.&#10;&#10;You should have received a copy of the GNU Affero General Public License&#10;along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;." />
+    <option name="notice" value="STAROPENSOURCE ENGINE SOURCE FILE&#10;Copyright (c) &amp;#36;today.year The StarOpenSource Engine Authors&#10;Licensed under the GNU Affero General Public License v3&#10;&#10;This program is free software: you can redistribute it and/or modify&#10;it under the terms of the GNU Affero General Public License as&#10;published by the Free Software Foundation, either version 3 of the&#10;License, or (at your option) any later version.&#10;&#10;This program is distributed in the hope that it will be useful,&#10;but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;GNU Affero General Public License for more details.&#10;&#10;You should have received a copy of the GNU Affero General Public License&#10;along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;." />
     <option name="myName" value="sos!engine" />
   </copyright>
 </component>

.idea/workspace.xml

@@ -0,0 +1,191 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunManager">
+    <configuration name="Build test application (native)" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="testapp:nativeImage" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Build test application" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="shadowJar" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Clean" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="clean" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Generate JavaDoc (combined)" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="javadocAll" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Generate Javadoc (separate)" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="javadoc" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Run test application (native)" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="testapp:runNativeimage" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Run test application" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="testapp:runShadow" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <configuration name="Run tests" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" value="" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list>
+            <option value="test" />
+          </list>
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+      <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+      <DebugAllEnabled>false</DebugAllEnabled>
+      <RunAsTest>false</RunAsTest>
+      <method v="2" />
+    </configuration>
+    <list>
+      <item itemvalue="Gradle.Clean" />
+      <item itemvalue="Gradle.Run tests" />
+      <item itemvalue="Gradle.Build test application" />
+      <item itemvalue="Gradle.Run test application" />
+      <item itemvalue="Gradle.Build test application (native)" />
+      <item itemvalue="Gradle.Run test application (native)" />
+      <item itemvalue="Gradle.Generate Javadoc (separate)" />
+      <item itemvalue="Gradle.Generate JavaDoc (combined)" />
+    </list>
+  </component>
+</project>

LICENSE

@@ -1,5 +1,5 @@
-                    GNU GENERAL PUBLIC LICENSE
+                    GNU AFFERO GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
+                       Version 3, 19 November 2007
 
  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
@@ -7,17 +7,15 @@
 
                             Preamble
 
-  The GNU General Public License is a free, copyleft license for
+  The GNU Affero General Public License is a free, copyleft license for
-software and other kinds of works.
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
 
   The licenses for most software and other practical works are designed
 to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
+our General Public Licenses are intended to guarantee your freedom to
 share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
+software for all its users.
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
 
   When we speak of free software, we are referring to freedom, not
 price.  Our General Public Licenses are designed to make sure that you
@@ -26,44 +24,34 @@ them if you wish), that you receive source code or can get it if you
 want it, that you can change the software or use pieces of it in new
 free programs, and that you know you can do these things.
 
-  To protect your rights, we need to prevent others from denying you
+  Developers that use our General Public Licenses protect your rights
-these rights or asking you to surrender the rights.  Therefore, you have
+with two steps: (1) assert copyright on the software, and (2) offer
-certain responsibilities if you distribute copies of the software, or if
+you this License which gives you legal permission to copy, distribute
-you modify it: responsibilities to respect the freedom of others.
+and/or modify the software.
 
-  For example, if you distribute copies of such a program, whether
+  A secondary benefit of defending all users' freedom is that
-gratis or for a fee, you must pass on to the recipients the same
+improvements made in alternate versions of the program, if they
-freedoms that you received.  You must make sure that they, too, receive
+receive widespread use, become available for other developers to
-or can get the source code.  And you must show them these terms so they
+incorporate.  Many developers of free software are heartened and
-know their rights.
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
 
-  Developers that use the GNU GPL protect your rights with two steps:
+  The GNU Affero General Public License is designed specifically to
-(1) assert copyright on the software, and (2) offer you this License
+ensure that, in such cases, the modified source code becomes available
-giving you legal permission to copy, distribute and/or modify it.
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
 
-  For the developers' and authors' protection, the GPL clearly explains
+  An older license, called the Affero General Public License and
-that there is no warranty for this free software.  For both users' and
+published by Affero, was designed to accomplish similar goals.  This is
-authors' sake, the GPL requires that modified versions be marked as
+a different license, not a version of the Affero GPL, but Affero has
-changed, so that their problems will not be attributed erroneously to
+released a new version of the Affero GPL which permits relicensing under
-authors of previous versions.
+this license.
-
-  Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the manufacturer
-can do so.  This is fundamentally incompatible with the aim of
-protecting users' freedom to change the software.  The systematic
-pattern of such abuse occurs in the area of products for individuals to
-use, which is precisely where it is most unacceptable.  Therefore, we
-have designed this version of the GPL to prohibit the practice for those
-products.  If such problems arise substantially in other domains, we
-stand ready to extend this provision to those domains in future versions
-of the GPL, as needed to protect the freedom of users.
-
-  Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish to
-avoid the special danger that patents applied to a free program could
-make it effectively proprietary.  To prevent this, the GPL assures that
-patents cannot be used to render the program non-free.
 
   The precise terms and conditions for copying, distribution and
 modification follow.
@@ -72,7 +60,7 @@ modification follow.
 
   0. Definitions.
 
-  "This License" refers to version 3 of the GNU General Public License.
+  "This License" refers to version 3 of the GNU Affero General Public License.
 
   "Copyright" also means copyright-like laws that apply to other kinds of
 works, such as semiconductor masks.
@@ -549,35 +537,45 @@ to collect a royalty for further conveying from those to whom you convey
 the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
 
-  13. Use with the GNU Affero General Public License.
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
 
   Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
-under version 3 of the GNU Affero General Public License into a single
+under version 3 of the GNU General Public License into a single
 combined work, and to convey the resulting work.  The terms of this
 License will continue to apply to the part which is the covered work,
-but the special requirements of the GNU Affero General Public License,
+but the work with which it is combined will remain governed by version
-section 13, concerning interaction through a network will apply to the
+3 of the GNU General Public License.
-combination as such.
 
   14. Revised Versions of this License.
 
   The Free Software Foundation may publish revised and/or new versions of
-the GNU General Public License from time to time.  Such new versions will
+the GNU Affero General Public License from time to time.  Such new versions
-be similar in spirit to the present version, but may differ in detail to
+will be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
   Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU General
+Program specifies that a certain numbered version of the GNU Affero General
 Public License "or any later version" applies to it, you have the
 option of following the terms and conditions either of that numbered
 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
-GNU General Public License, you may choose any version ever published
+GNU Affero General Public License, you may choose any version ever published
 by the Free Software Foundation.
 
   If the Program specifies that a proxy can decide which future
-versions of the GNU General Public License can be used, that proxy's
+versions of the GNU Affero General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
 
@@ -635,40 +633,29 @@ the "copyright" line and a pointer to where the full notice is found.
     Copyright (C) <year>  <name of author>
 
     This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
+    it under the terms of the GNU Affero General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
+    GNU Affero General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
+    You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-  If the program does terminal interaction, make it output a short
+  If your software can interact with users remotely through a computer
-notice like this when it starts in an interactive mode:
+network, you should also make sure that it provides a way for users to
-
+get its source.  For example, if your program is a web application, its
-    <program>  Copyright (C) <year>  <name of author>
+interface could display a "Source" link that leads users to an archive
-    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+of the code.  There are many ways you could offer source, and different
-    This is free software, and you are welcome to redistribute it
+solutions will be better for different programs; see section 13 for the
-    under certain conditions; type `show c' for details.
+specific requirements.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, your program's commands
-might be different; for a GUI interface, you would use an "about box".
 
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU GPL, see
+For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
-
-  The GNU General Public License does not permit incorporating your program
-into proprietary programs.  If your program is a subroutine library, you
-may consider it more useful to permit linking proprietary applications with
-the library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.  But first, please read
-<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,72 +1,91 @@
-<div align="center">
+# StarOpenSource Engine
-<a href="https://git.staropensource.de/StarOpenSource/Engine">
+The StarOpenSource Engine (or sos!engine for short) is a modular, extensible and easy to use Java game and application engine.
-<img alt="StarOpenSource Engine" width="856px" height="auto" src="https://fs.staropensource.de/imgs/branding/engine/v2/extended-brand.png"/>
-</a>
 
-<p align="center"><a href="https://git.staropensource.de/StarOpenSource/Engine">Repository</a> | <a href="https://engine.staropensource.de">Documentation</a> | <a href="https://develop.engine.staropensource.de">Documentation (development)</a></p>
+## WARNING
-</div>
+The StarOpenSource Engine is under heavy development and is extremely unstable. Code will break often, prepare for potential major refactors when trying the engine out.
 
-# Index
+## Index
 - [About](#about)
+  - [... the engine](#-the-engine)
+  - [... the repository](#-the-repository)
+  - [Priorities](#priorities)
+- [Documentation](#documentation)
 - [Contributing](#contributing)
-- [Gradle properties](#gradle-properties)
+  - [Requirements](#requirements)
-  - [Skipping the Java toolchain specification](#skipping-the-java-toolchain-specification)
+  - [What IDE to use?](#what-ide-to-use)
-  - [JVM arguments](#jvm-arguments)
+  - [Code style](#code-style)
-    - [`jvm.logGC`](#jvm-loggc)
+  - [Pull request guidelines](#pull-request-guidelines)
-    - [`jvm.logJITandAOT`](#jvm-logjitandaot)
+  - [Making your first contribution](#making-your-first-contribution)
-    - [`jvm.garbageCollector`](#jvm-garbagecollector)
+  - [Gradle properties](#gradle-properties)
 
-# About
+## About
-The StarOpenSource Engine is a game and application
+### ... the engine
-framework written in Kotlin, primarily targeting the JVM.
+The StarOpenSource Engine is a modular and extensible framework for building applications and games written in [one of the multiple JVM programming languages](https://en.wikipedia.org/wiki/List_of_JVM_languages).
-The engine is designed to be modular, configurable
+The engine consists of various subsystems, each separate and responsible for only a few closely-related tasks.
-and extensible while being lightweight and fast.
+ \
+Not only that. The engine also features various useful classes, interfaces and methods making development fun and simpler, while being lightweight.
+### ... the repository
+The sos!engine repository is a monorepo, consisting of [the core engine](https://git.staropensource.de/StarOpenSource/Engine/src/branch/develop/base), multiple official subsystems and [their documentation](https://git.staropensource.de/StarOpenSource/Engine/src/branch/develop/docs).
+### Priorities
+These are in no particular order.
 
-In this repository you can find the
+- configurable
-[core engine](https://git.staropensource.de/StarOpenSource/Engine/src/branch/develop/base), official
+- [do one thing and do it well](https://en.wikipedia.org/wiki/Unix_philosophy) (subsystems concept)
-subsystems, [their documentation (TODO)](https://git.staropensource.de/StarOpenSource/Engine/src/branch/develop/docs)
+- fast
-and [some miscellaneous files](https://git.staropensource.de/StarOpenSource/Engine/src/branch/develop/dist).
+- few runtime dependencies (note: we will cut down on some of them during development)
+- modular & extensible
+- small & lightweight
 
-# Documentation
+## Documentation
-The documentation is not yet available. We will create one soon.
+You can view the engine documentation at [engine.staropensource.de](https://engine.staropensource.de). It provides information, guides and tutorials about the core engine and subsystems.
+If you want the API reference, you can [visit the Javadoc](https://jd.engine.staropensource.de) for the engine and it's subsystems.
 
-# Contributing
+## Contributing
-TODO, waiting for [Infrastructure/website-docs#1](https://git.staropensource.de/Infrastructure/website-docs/issues/1). Sorry :c
+### Requirements
-
+You need the following things to be able to contribute code to the StarOpenSource Engine:
-# Gradle properties
+- knowledge of Java
-You can modify Gradle's behaviour by passing one or multiple *project properties*.
+- knowledge about the internals of engine
-These are read by our `build.gradle.kts` files and actively change the build behaviour.
+### What IDE to use?
-You can pass one by adding `-P<property>=<value>` to your Gradle command line.
+We recommend and are using [IntelliJ IDEA Community Edition](https://github.com/JetBrains/intellij-community) for development because it is flexible, extendable, customizable, provides good completions and error detection. It's also open source.
-
+### Code style
-## Skipping the Java toolchain specification
+We recommend looking at existing classes and code for a good understanding on how we'd like code to be written.
-Setting `java.skipToolchainSpecification` to `true` disables the
+Here's a quick rundown on the most important things:
-JDK version check & download step performed by Gradle. Useful when
+- Document EVERYTHING. Every single class, field and method, even if private.
-automating things or if you're facing the `No locally installed
+- Make comments about your code, unless it's extremely simple and easy to understand.
-toolchains match and toolchain download repositories have not
+- Make sure to add and update `@since` in javadoc comments (update if the javadoc changes a good amount).
-been defined` error.
+- Keep stuff simple, no need to elaborate what a logger is. Though remember to not make it *too* simple.
-
+- Make sure every field and method has a newline to separate it.
-Please note however that you should only pass this option if your
+- Files must end with a newline or cats might get angry.
-default, installed JDK is matching Java 21 or you will experience
+- Use your brain.
-issues.
+### Pull request guidelines
-
+Before creating a pull request, make sure you've:
-## JVM arguments
+- created tests for the functionality you've added, changed or removed (if applicable),
-You can pass the following arguments to modify the
+- tested your changes,
-behaviour of JVMs used for executing projects.
+- made sure that everything works,
-### `jvm.logGC`
+- is compatible with other code in the monorepo, and
-Enables garbage collection logging.
+- is compatible with other applications. If not, tell us in your pull request description.
-
+### Making your first contribution
-Takes effect if set to `true`.
+TODO
-### `jvm.logJITandAOT`
+### Gradle properties
-Enables logging about [JIT](https://en.wikipedia.org/wiki/Just-in-time_compilation)
+Gradle's behaviour can be changed by changing gradle project properties.
-and [AOT](https://en.wikipedia.org/wiki/Ahead-of-time_compilation) code compilation.
+To change them, simply append `-P<property>` or `-P<property>=<value>`, like this: `./gradlew -Pjobs=4 test`.
-
+#### Parallelism
-Takes effect if set to `true`.
+Use the `jobs` property to control how many jobs will get executed simultaneously.
-### `jvm.garbageCollector`
+On Linux, specify `-Pjobs=$(nproc)`. Defaults to `8`.
-Sets the garbage collector to use.
+#### Rendering
-Requires the specified garbage collector to
+You can use the `renderingPlatform` property to control which rendering platform to initialize for.
-be built into the JVM (some aren't compiled
+#### JVM Home
-by default).
+You can use the `graalHome` property to specify the `$JAVA_HOME` of your local GraalVM installation.
-
+Only used in the `nativeImage` task. Useful if you aren't using GraalVM as your primary JDK.
-Accepts [`epsilon`](https://openjdk.org/jeps/318),
+#### Testing
-[`serial`](https://docs.oracle.com/en/java/javase/21/gctuning/available-collectors.html#GUID-45794DA6-AB96-4856-A96D-FDE5F7DEE498)
+You can use the following properties to modify the behaviour of the `test`-task:
-and [`g1`](https://en.wikipedia.org/wiki/Garbage-first_collector).
+- `test.control.mode` (default *empty*)
+  - `force-enable`: Disables all test classes except the ones specified
+  - `force-disable`: Enables all test classes except the ones specified
+  - *everything else*: Enables all test classes
+- `test.control.classes` (default *empty*): A comma-separated, case-sensitive list of test classes
+  which (depending on `test.control.mode`'s value) enable or disable the specified classes.
+  Example: `-Ptest.control.mode=MiscellaneousTest,DependencyResolverTest,EngineConfigurationTest`
+- `test.control.warning` (default `false`): If `true`, will emit a warning before a restricted test method exits
+- `test.loggerLevel` (default `silent_warning`): Will set `UnitLogger`'s logger level.
+  Works like `-Dsosengine.base.loggerLevel`. See `UnitLogger#loggerLevel` for more information 

ansi/README.md

@@ -1,2 +0,0 @@
-# `/ansi`
-The subsystem which provides a nice formatter.

ansi/build.gradle

@@ -0,0 +1,112 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+// Plugins
+plugins {
+    id("java")
+    id("io.freefair.lombok") version("${pluginLombok}")
+    id("maven-publish")
+}
+
+// Dependencies
+dependencies {
+    // Lombok
+    compileOnly("org.projectlombok:lombok:${dependencyLombok}")
+    annotationProcessor("org.projectlombok:lombok:${dependencyLombok}")
+
+    // JetBrains Annotations
+    compileOnly("org.jetbrains:annotations:${dependencyJetbrainsAnnotations}")
+
+    // Jansi
+    implementation("org.fusesource.jansi:jansi:${dependencyJansi}")
+
+    // Project
+    implementation(project(":base"))
+}
+
+// Javadoc configuration
+javadoc {
+    outputs.upToDateWhen { false }  // Force task execution
+    dependsOn(delombok)  // Make sure the source is delomboked first
+
+    javadoc {
+        setClasspath(files(project.sourceSets.main.compileClasspath))  // Include dependencies
+
+        options {
+            if (new File(projectDir, "src/main/javadoc/theme.css").exists())
+                stylesheetFile = new File(projectDir, "src/main/javadoc/theme.css")  // Theming is cool :3
+            setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
+            setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
+            setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
+
+            setJFlags([
+                    "-Duser.language=en_US"  // See above
+            ])
+        }
+    }
+}
+
+// Include javadoc and source jar during publishing
+java {
+    withJavadocJar()
+    withSourcesJar()
+}
+
+// Build publishing configuration
+// Note: You can safely ignore any errors or warnings thrown by your IDE here
+publishing {
+    repositories {
+        maven {
+            name = "staropensource"
+            url = uri("https://mvn.staropensource.de/engine")
+            credentials(org.gradle.api.credentials.PasswordCredentials)
+            authentication {
+                //noinspection GroovyAssignabilityCheck
+                basic (BasicAuthentication)
+            }
+        }
+    }
+    publications {
+        //noinspection GroovyAssignabilityCheck
+        maven (MavenPublication) {
+            groupId = group
+            artifactId = project.getName()
+            version = version
+            //noinspection GroovyAssignabilityCheck
+            from components.java
+        }
+    }
+}
+
+// Fix delombok task
+delombok.doFirst {
+    File target = file("${project.projectDir}/src/main/module-info.java")
+    File source = file("${project.projectDir}/src/main/java/module-info.java")
+
+    target.delete()
+    source.renameTo(target)
+}
+delombok.doLast {
+    File target = file("${project.projectDir}/src/main/java/module-info.java")
+    File source = file("${project.projectDir}/src/main/module-info.java")
+
+    target.delete()
+    source.renameTo(target)
+}

ansi/build.gradle.kts

@@ -1,24 +0,0 @@
-/*
- * STAROPENSOURCE ENGINE SOURCE FILE
- * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-// Dependencies
-dependencies {
-    // sos!engine
-    implementation(project(":base"))
-}

ansi/gradle

@@ -0,0 +1 @@
+../gradle

ansi/gradlew

@@ -0,0 +1 @@
+../gradlew

ansi/gradlew.bat

@@ -0,0 +1 @@
+../gradlew.bat

ansi/src/main/java/de/staropensource/engine/ansi/AnsiLoggingAdapter.java

@@ -0,0 +1,61 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.ansi;
+
+import de.staropensource.engine.base.EngineConfiguration;
+import de.staropensource.engine.base.implementable.LoggingAdapter;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import org.fusesource.jansi.Ansi;
+import org.fusesource.jansi.AnsiConsole;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Prints colored log output using the Jansi library.
+ *
+ * @see Logger
+ * @see LoggingAdapter
+ * @since v1-alpha2
+ */
+public class AnsiLoggingAdapter implements LoggingAdapter {
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha2
+     */
+    public AnsiLoggingAdapter() {}
+
+    /** {@inheritDoc} */
+    @Override
+    @SuppressWarnings({ "resource" })  // Using try-with-resources will cause issues here
+    public void print(@NotNull LogLevel level, @NotNull StackTraceElement issuer, @NotNull String message, @NotNull String format) {
+        // Convert to Ansi
+        Ansi output = new AnsiShortcodeParser(format, true).getAnsi();
+
+        // Print message
+        if (level == LogLevel.ERROR || level == LogLevel.CRASH)
+            if (EngineConfiguration.getInstance().isLogForceStandardOutput())
+                AnsiConsole.out().println(output);
+            else
+                AnsiConsole.err().println(output);
+        else
+            AnsiConsole.out().println(output);
+    }
+}

ansi/src/main/java/de/staropensource/engine/ansi/AnsiShortcodeParser.java

@@ -0,0 +1,107 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.ansi;
+
+import de.staropensource.engine.base.implementable.ShortcodeParser;
+import de.staropensource.engine.base.exception.ParserException;
+import org.fusesource.jansi.Ansi;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Implementation of the {@link ShortcodeParser} class
+ * with ANSI support using the Jansi library.
+ *
+ * @see ShortcodeParser
+ * @since v1-alpha8
+ */
+public final class AnsiShortcodeParser extends ShortcodeParser {
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @param string               string to convert
+     * @param ignoreInvalidEscapes will ignore invalid escapes and print treat them like regular text
+     * @throws ParserException when parsing failed
+     * @since v1-alpha2
+     */
+    public AnsiShortcodeParser(@NotNull String string, boolean ignoreInvalidEscapes) throws ParserException {
+        super(string, ignoreInvalidEscapes);
+    }
+
+    /**
+     * Returns the parsed string as an {@link Ansi} sequence.
+     *
+     * @return {@link Ansi} sequence
+     * @since v1-alpha2
+     */
+    public @NotNull Ansi getAnsi() {
+        Ansi ansi = Ansi.ansi();
+        Set<@NotNull String> status = new HashSet<>();
+
+        for (String component : components)
+            if (component.equals("RESET")) {
+                ansi.a(Ansi.Attribute.RESET);
+                status.clear();
+            } else if (component.startsWith("TEXT:"))
+                ansi.a(component.substring(5));
+            else if (component.startsWith("COLOR:")) {
+                if (component.startsWith("COLOR:FOREGROUND:"))
+                    ansi.fg(Ansi.Color.valueOf(component.substring(17)));
+                else if (component.startsWith("COLOR:BACKGROUND:"))
+                    ansi.bg(Ansi.Color.valueOf(component.substring(17)));
+            } else if (component.startsWith("ATTRIBUTE:"))
+                if (component.startsWith("ATTRIBUTE:BLINK")) {
+                    if (status.contains("ATTRIBUTE:BLINK"))
+                        continue;
+
+                    ansi.a(Ansi.Attribute.BLINK_SLOW);
+                    status.add("ATTRIBUTE:BLINK");
+                } else if (component.startsWith("ATTRIBUTE:BOLD")) {
+                    if (status.contains("ATTRIBUTE:BOLD"))
+                        continue;
+
+                    ansi.a(Ansi.Attribute.INTENSITY_BOLD);
+                    status.add("ATTRIBUTE:BOLD");
+                } else if (component.startsWith("ATTRIBUTE:ITALIC")) {
+                    if (status.contains("ATTRIBUTE:ITALIC"))
+                        continue;
+
+                    ansi.a(Ansi.Attribute.ITALIC);
+                    status.add("ATTRIBUTE:ITALIC");
+                } else if (component.startsWith("ATTRIBUTE:STRIKETHROUGH")) {
+                    if (status.contains("ATTRIBUTE:STRIKETHROUGH"))
+                        continue;
+
+                    ansi.a(Ansi.Attribute.STRIKETHROUGH_ON);
+                    status.add("ATTRIBUTE:STRIKETHROUGH");
+                } else if (component.startsWith("ATTRIBUTE:UNDERLINE")) {
+                    if (status.contains("ATTRIBUTE:UNDERLINE"))
+                        continue;
+
+                    ansi.a(Ansi.Attribute.UNDERLINE);
+                    status.add("ATTRIBUTE:UNDERLINE");
+                }
+
+
+        return ansi;
+    }
+}

ansi/src/main/java/de/staropensource/engine/ansi/AnsiSubsystem.java

@@ -0,0 +1,88 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.ansi;
+
+import de.staropensource.engine.base.annotation.EngineSubsystem;
+import de.staropensource.engine.base.implementable.SubsystemClass;
+import de.staropensource.engine.base.implementation.logging.PlainLoggingAdapter;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import de.staropensource.engine.base.implementation.versioning.StarOpenSourceVersioningSystem;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.type.DependencyVector;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Main class of the ANSI Compatibility subsystem.
+ *
+ * @since v1-alpha2
+ */
+@EngineSubsystem
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class AnsiSubsystem extends SubsystemClass {
+    /**
+     * Contains the class instance.
+     *
+     * @since v1-alpha2
+     * -- GETTER --
+     * Returns the class instance.
+     *
+     * @return class instance unless the subsystem is uninitialized
+     * @since v1-alpha2
+     */
+    @Getter
+    private static AnsiSubsystem instance = null;
+
+    /**
+     * Initializes this subsystem.
+     *
+     * @since v1-alpha2
+     */
+    public AnsiSubsystem() {
+        // Check if subsystem has already initialized
+        if (instance == null)
+            instance = this;
+        else
+            Logger.crash("Only one instance of this class is allowed, use getInstance() instead of creating a new instance");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "ansi";
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void initializeSubsystem() {
+        if (Logger.getLoggingAdapter().getClass().getName().equals(PlainLoggingAdapter.class.getName()))
+            Logger.setLoggingAdapter(new AnsiLoggingAdapter());
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull DependencyVector getDependencyVector() {
+        return new DependencyVector.Builder()
+                .setIdentifier("ansi")
+                .setVersioningSystem(StarOpenSourceVersioningSystem.class)
+                .setVersion(EngineInformation.getVersioningString())
+                .build();
+    }
+}

ansi/src/main/java/de/staropensource/engine/ansi/package-info.java

@@ -2,7 +2,6 @@
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
  * Licensed under the GNU Affero General Public License v3
- * with an exception allowing classpath linking.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -18,8 +17,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-// Dependencies
+/**
-dependencies {
+ * Contains the ANSI subsystem code.
-    // sos!engine
+ */
-    implementation(project(":base"))
+package de.staropensource.engine.ansi;
-}

ansi/src/main/java/module-info.java

@@ -0,0 +1,23 @@
+/**
+ * The ANSI subsystem, allowing the engine to
+ * use ANSI escape codes using the Jansi library.
+ *
+ * @since v1-alpha2
+ */
+module sosengine.ansi {
+    // Dependencies
+    // -> Java
+    requires transitive java.management;
+    // -> Engine
+    requires transitive sosengine.base;
+    // -> Libraries
+    requires transitive static lombok;
+    requires transitive org.jetbrains.annotations;
+    requires org.fusesource.jansi;
+
+    // API access
+    exports de.staropensource.engine.ansi;
+
+    // Reflection access
+    opens de.staropensource.engine.ansi;
+}

ansi/src/main/javadoc/overview.html

@@ -0,0 +1,23 @@
+<!--
+  ~ STAROPENSOURCE ENGINE SOURCE FILE
+  ~ Copyright (c) 2024 The StarOpenSource Engine Authors
+  ~ Licensed under the GNU Affero General Public License v3
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU Affero General Public License as
+  ~ published by the Free Software Foundation, either version 3 of the
+  ~ License, or (at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU Affero General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU Affero General Public License
+  ~ along with this program.  If not, see <https://www.gnu.org/licenses/>.
+  -->
+
+<body>
+<p>Welcome to the sos!engine API documentation!<br/>
+    You are currently in the documentation for the <b>ansi</b> subsystem, allowing ANSI escape sequences to be used using Jansi.</p>
+</body>

ansi/src/main/javadoc/theme.css

@@ -0,0 +1 @@
+../../../../src/main/javadoc/theme.css

ansi/src/main/kotlin/de/staropensource/engine/ansi/AnsiFormatter.kt

@@ -1,145 +0,0 @@
-/*
- * STAROPENSOURCE ENGINE SOURCE FILE
- * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.staropensource.engine.ansi
-
-import de.staropensource.engine.ansi.AnsiSubsystem.Companion.logger
-import de.staropensource.engine.base.implementable.formatter.TwoCycleFormatterImpl
-
-/**
- * Formats a string using ANSI
- * escape sequences.
- *
- * @since v1-alpha10
- */
-class AnsiFormatter : TwoCycleFormatterImpl() {
-    /**
-     * Companion object of [AnsiFormatter].
-     *
-     * @since v1-alpha10
-     */
-    companion object {
-        /**
-         * The `ESC` character.
-         *
-         * @since v1-alpha10
-         */
-        const val ESCAPE: Char = '\u001b'
-
-        /**
-         * Global instance of [AnsiFormatter].
-         *
-         * @since v1-alpha10
-         */
-        @JvmStatic
-        val instance: AnsiFormatter = AnsiFormatter()
-    }
-
-    @Suppress("CyclomaticComplexMethod")
-    override fun format(messageComponents: Array<String>): String = buildString {
-        val enabledTags: MutableSet<String> = mutableSetOf()
-        var lastColor: String? = null
-        var modifiers: String = ""
-
-        for (component: String in messageComponents)
-            // Reset
-            if (component == "RESET") {
-                append("${ESCAPE}[0;39;49m")
-                modifiers = ""
-                lastColor = null
-                enabledTags.clear()
-
-            // Text
-            } else if (component.startsWith("TEXT:")) {
-                append(component.substring(5))
-
-            // Attributes
-            } else if (component.startsWith("ATTRIBUTE:")) {
-                try {
-                    if (!enabledTags.contains(component)) {
-                        modifiers = attribute(component.substring(10), modifiers)!!
-                        enabledTags.add(component)
-                        if (lastColor != null)
-                            append(color(lastColor, modifiers))
-                    }
-                } catch (_: NullPointerException) {
-                    logger.crash("Internal inconsistency: Unknown attribute '${component.substring(10)}' (component '${component}')")
-                }
-
-            // Colors
-            } else if (component.startsWith("COLOR:")) {
-                try {
-                    lastColor = component.substring(6)
-                    append(color(lastColor, modifiers)!!)
-                } catch (_: NullPointerException) {
-                    logger.crash("Internal inconsistency: Unknown color '${component.substring(6)}' (component '${component}')")
-                }
-            } else
-                logger.crash("Internal inconsistency: Unknown component '${component}'")
-    }
-
-    /**
-     * Returns the matching ANSI color code.
-     *
-     * @param color color to return
-     * @return ANSI color code
-     * @since v1-alpha10
-     */
-    @Suppress("CyclomaticComplexMethod")
-    private fun color(color: String, modifiers: String): String? {
-        var colorCode: String = "${ESCAPE}[${modifiers}38;2;"
-
-        when (color) {
-            "WHITE" -> colorCode += "255;255;255"
-            "BLACK" -> colorCode += "0;0;0"
-            "GRAY" -> colorCode += "150;150;150"
-            "YELLOW" -> colorCode += "204;232;69"
-            "GREEN" -> colorCode += "53;224;63"
-            "CYAN" -> colorCode += "36;227;233"
-            "LIGHT_BLUE" -> colorCode += "7;161;247"
-            "BLUE" -> colorCode += "7;100;247"
-            "PURPLE" -> colorCode += "86;4;219"
-            "MAGENTA" -> colorCode += "164;37;237"
-            "PINK" -> colorCode += "215;88;214"
-            "RED" -> colorCode += "214;5;50"
-            "ORANGE" -> colorCode += "228;148;55"
-            else -> return null
-        }
-
-        colorCode += "m"
-
-        return colorCode
-    }
-
-    /**
-     * Resolves the attribute and
-     * returns the matching modifiers.
-     *
-     * @param attribute attribute to resolve
-     * @return modifiers
-     * @since v1-alpha10
-     */
-    private fun attribute(attribute: String, modifiers: String): String? = when (attribute) {
-        "BOLD" -> modifiers.plus("1;")
-        "ITALIC" -> modifiers.plus("3;")
-        "UNDERLINE" -> modifiers.plus("4;")
-        "STRIKETHROUGH" -> modifiers.plus("9;")
-        else -> null
-    }
-}

ansi/src/main/kotlin/de/staropensource/engine/ansi/AnsiSubsystem.kt

@@ -1,98 +0,0 @@
-/*
- * STAROPENSOURCE ENGINE SOURCE FILE
- * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.staropensource.engine.ansi
-
-import de.staropensource.engine.base.Engine
-import de.staropensource.engine.base.implementable.Subsystem
-import de.staropensource.engine.base.logging.Logger
-import de.staropensource.engine.base.utility.dnihbd.BuildInformation
-
-/**
- * The ANSI subsystem.
- *
- * @since v1-alpha10
- */
-class AnsiSubsystem : Subsystem() {
-    /**
-     * Companion object of [AnsiSubsystem].
-     *
-     * @since v1-alpha10
-     */
-    companion object {
-        /**
-         * Contains the [Logger] instance of the ANSI subsystem.
-         *
-         * @since v1-alpha10
-         */
-        @JvmStatic
-        internal val logger: Logger = Logger(channel = "engine-ansi")
-
-        /**
-         * Contains a [BuildInformation] instance
-         * providing information about the running
-         * ANSI subsystem build.
-         *
-         * @see BuildInformation
-         * @since v1-alpha10
-         */
-        @JvmStatic
-        var info: BuildInformation? = null
-
-        /**
-         * Registers this subsystem.
-         *
-         * @since v1-alpha10
-         */
-        @JvmStatic
-        fun register() {
-            if (!Engine.getSubsystems().map { item -> item::class }.contains(AnsiSubsystem::class))
-                Engine.registerSubsystem(AnsiSubsystem())
-        }
-    }
-
-
-    // -----> Metadata
-    override fun getName(): String = "ANSI"
-    override fun getVersion(): String = info?.versionString(semver = false) ?: "unknown"
-
-
-    // -----> Lifecycle
-    override fun initialize() {
-        info = BuildInformation("sosengine-ansi")
-
-        if (Engine.info!!.versionString(semver = false) != info!!.versionString(semver = false))
-            logger.crash("""
-                The version of the core engine and the ANSI subsystem differs.
-                Engine:         ${Engine.info!!.versionString(semver = false)}
-                ANSI subsystem: ${info!!.versionString(semver = false)}
-            """.trimIndent().trimEnd())
-
-        if (Engine.info!!.gitCommitIdentifierLong != info!!.gitCommitIdentifierLong)
-            logger.crash("""
-                The commit id of the core engine and the ANSI subsystem differs.
-                Engine:         ${Engine.info!!.gitCommitIdentifierLong}
-                ANSI subsystem: ${info!!.gitCommitIdentifierLong}
-            """.trimIndent().trimEnd())
-    }
-
-    override fun shutdown(final: Boolean, fatalCrash: Boolean) {
-        info = null
-    }
-}

ansi/src/main/resources/.gitignore

@@ -1,2 +0,0 @@
-sosengine-*-git.properties
-sosengine-*-gradle.properties

base/.gitignore

@@ -0,0 +1 @@
+src/main/resources/git.properties

base/README.md

@@ -1,2 +1,2 @@
-# `/base`
+# The `base` subsystem
-The core engine. The grand piece of code which makes everything work.
+This is not just a subsystem, this is the core engine. It contains data types, logging infrastructure, an event system, a crash reporter and much more stuff required for basic applications.

base/build.gradle

@@ -0,0 +1,183 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import java.nio.file.Files
+// Plugins
+plugins {
+    id("java")
+    id("io.freefair.lombok") version("${pluginLombok}")
+    id("com.gorylenko.gradle-git-properties") version("${pluginGitProperties}")
+    id("maven-publish")
+}
+
+// Dependencies
+dependencies {
+    // -> Runtime
+    // Lombok
+    compileOnly("org.projectlombok:lombok:${dependencyLombok}")
+    annotationProcessor("org.projectlombok:lombok:${dependencyLombok}")
+
+    // JetBrains Annotations
+    compileOnly("org.jetbrains:annotations:${dependencyJetbrainsAnnotations}")
+
+    // Reflections
+    implementation("org.reflections:reflections:${dependencyReflections}")
+
+    // -> Testing
+    // Jetbrains Annotations
+    testCompileOnly("org.jetbrains:annotations:${dependencyJetbrainsAnnotations}")
+
+    // JUnit
+    testImplementation(platform("org.junit:junit-bom:${dependencyJunit}"))
+    testImplementation("org.junit.jupiter:junit-jupiter")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+
+    // Project
+    testImplementation(project(":testing"))
+}
+
+// Javadoc configuration
+javadoc {
+    outputs.upToDateWhen { false }  // Force task execution
+    dependsOn(delombok)  // Make sure the source is delomboked first
+
+    javadoc {
+        setClasspath(files(project.sourceSets.main.compileClasspath))  // Include dependencies
+
+        options {
+            if (new File(projectDir, "src/main/javadoc/theme.css").exists())
+                stylesheetFile = new File(projectDir, "src/main/javadoc/theme.css")  // Theming is cool :3
+            setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
+            setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
+            setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
+
+            setJFlags([
+                    "-Duser.language=en_US"  // See above
+            ])
+        }
+    }
+}
+
+// Unit testing configuration
+test {
+    useJUnitPlatform()
+
+    // Pass test configuration to test VMs
+    Map<String, String> testConfiguration = new HashMap<>();
+    for (String property : project.properties.keySet())
+        if (property.startsWith("test."))
+            testConfiguration.put(property, project.properties.get(property).toString())
+    systemProperties(testConfiguration)
+
+    setMaxParallelForks(project.hasProperty("jobs") ? Integer.parseInt((String) project.property("jobs")) : 8)
+    setForkEvery(1)
+    setFailFast(true)
+
+    testLogging {
+        events("passed", "skipped", "failed")
+    }
+}
+
+// Include javadoc and source jar during publishing
+java {
+    withJavadocJar()
+    withSourcesJar()
+}
+
+// Build publishing configuration
+// Note: You can safely ignore any errors or warnings thrown by your IDE here
+publishing {
+    repositories {
+        maven {
+            name = "staropensource"
+            url = uri("https://mvn.staropensource.de/engine")
+            credentials(org.gradle.api.credentials.PasswordCredentials)
+            authentication {
+                //noinspection GroovyAssignabilityCheck
+                basic (BasicAuthentication)
+            }
+        }
+    }
+    publications {
+        //noinspection GroovyAssignabilityCheck
+        maven (MavenPublication) {
+            groupId = group
+            artifactId = project.getName()
+            version = version
+            //noinspection GroovyAssignabilityCheck
+            from components.java
+        }
+    }
+}
+
+// Copy gradle.properties file
+// for inclusion in final build
+tasks.register("copyGradleProperties") {
+    doFirst {
+        File target = file("${project.projectDir}/src/main/resources/sosengine-gradle.properties")
+        File source = file(project(":").projectDir.getPath() + "/gradle.properties")
+        target.delete()
+        Files.copy(source.toPath(), target.toPath())
+    }
+
+    outputs.upToDateWhen({ false })  // Force task execution
+}
+processResources.dependsOn(copyGradleProperties)
+
+// Git properties configuration
+// Allows us to embed git commit information in the engine build
+gitProperties {
+    dotGitDirectory = file("${rootProject.rootDir}/.git")
+    failOnNoGitDirectory = false  // Allow continuing if .git directory is missing for the few who use tarballs
+    extProperty = "gitProps"
+
+    dateFormat = "yyyy-MM-dd'T'HH:mmZ"
+    dateFormatTimeZone = "UTC"
+}
+
+tasks.register("writeGitProperties") {  // This task's only purpose is to copy the git.properties from our git properties plugin to the resources directory so it's included in the final build
+    doLast {
+        File target = file("${project.projectDir}/src/main/resources/sosengine-git.properties")
+        File source = file("${project.projectDir}/build/resources/main/git.properties")
+
+        target.delete()
+        source.renameTo(target)
+    }
+
+    outputs.upToDateWhen({ false })  // Force task execution
+}
+generateGitProperties.outputs.upToDateWhen({ false })  // Force task execution
+processResources.dependsOn(writeGitProperties)  // Ensure git.properties file is present
+
+// Fix delombok task
+delombok.doFirst {
+    File target = file("${project.projectDir}/src/main/module-info.java")
+    File source = file("${project.projectDir}/src/main/java/module-info.java")
+
+    target.delete()
+    source.renameTo(target)
+}
+delombok.doLast {
+    File target = file("${project.projectDir}/src/main/java/module-info.java")
+    File source = file("${project.projectDir}/src/main/module-info.java")
+
+    target.delete()
+    source.renameTo(target)
+}

base/build.gradle.kts

@@ -1,24 +0,0 @@
-/*
- * STAROPENSOURCE ENGINE SOURCE FILE
- * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-// Dependencies
-dependencies {
-    // OSHI
-    implementation("${property("dependencyOshiIdentifier") as String}:${property("dependencyOshiVersion") as String}")
-}

base/gradle

@@ -0,0 +1 @@
+../gradle

base/gradlew

@@ -0,0 +1 @@
+../gradlew

base/gradlew.bat

@@ -0,0 +1 @@
+../gradlew.bat

base/src/main/java/de/staropensource/engine/base/Engine.java

@@ -0,0 +1,614 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base;
+
+import de.staropensource.engine.base.annotation.EngineSubsystem;
+import de.staropensource.engine.base.event.*;
+import de.staropensource.engine.base.exception.IllegalAccessException;
+import de.staropensource.engine.base.exception.dependency.UnmetDependenciesException;
+import de.staropensource.engine.base.implementable.ShutdownHandler;
+import de.staropensource.engine.base.implementable.SubsystemClass;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+import de.staropensource.engine.base.implementation.versioning.StarOpenSourceVersioningSystem;
+import de.staropensource.engine.base.event.InternalEngineShutdownEvent;
+import de.staropensource.engine.base.internal.type.DependencySubsystemVector;
+import de.staropensource.engine.base.logging.PrintStreamService;
+import de.staropensource.engine.base.logging.*;
+import de.staropensource.engine.base.logging.backend.async.LoggingQueue;
+import de.staropensource.engine.base.logging.backend.async.LoggingThread;
+import de.staropensource.engine.base.type.DependencyVector;
+import de.staropensource.engine.base.type.EngineState;
+import de.staropensource.engine.base.utility.DependencyResolver;
+import de.staropensource.engine.base.utility.FileAccess;
+import de.staropensource.engine.base.utility.misc.Miscellaneous;
+import de.staropensource.engine.base.utility.PlaceholderEngine;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import de.staropensource.engine.base.utility.information.JvmInformation;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.Setter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Range;
+import org.reflections.Reflections;
+import org.reflections.scanners.Scanners;
+import org.reflections.util.ClasspathHelper;
+import org.reflections.util.ConfigurationBuilder;
+
+import java.util.*;
+
+/**
+ * Main class of the sos!engine.
+ *
+ * @see EngineConfiguration
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class Engine extends SubsystemClass {
+    /**
+     * Contains the class instance.
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns the class instance.
+     *
+     * @return class instance unless {@link Engine} is uninitialized
+     * @since v1-alpha0
+     */
+    @Getter
+    private static Engine instance = null;
+
+    /**
+     * Contains the thread group of the engine.
+     *
+     * @since v1-alpha2
+     * -- GETTER --
+     * Returns the thread group of the engine.
+     *
+     * @return engine thread group
+     * @since v1-alpha2
+     */
+    @Getter
+    private static final ThreadGroup threadGroup = new ThreadGroup("sos!engine");
+
+    /**
+     * Contains the engine state.
+     *
+     * @since v1-alpha2
+     * -- GETTER --
+     * Returns the engine state.
+     *
+     * @return shutdown state
+     * @since v1-alpha2
+     */
+    @Getter
+    private @NotNull EngineState state;
+
+    /**
+     * Contains a list of all registered subsystems.
+     * The list is sorted after initialization order.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns a list of all registered subsystems.
+     * The list is sorted after initialization order.
+     *
+     * @return subsystem list
+     * @since v1-alpha1
+     */
+    @Getter
+    private @NotNull List<@NotNull DependencySubsystemVector> subsystems = Collections.emptyList();
+
+    /**
+     * Contains the engine's shutdown handler.
+     * The shutdown handler is responsible for
+     * shutting down the JVM safely.
+     *
+     * @see ShutdownHandler
+     * @since v1-alpha2
+     * -- GETTER --
+     * Returns the engine's shutdown handler.
+     * The shutdown handler is responsible for
+     * shutting down the JVM safely.
+     *
+     * @return shutdown handler
+     * @see ShutdownHandler
+     * @since v1-alpha2
+     * -- SETTER --
+     * Sets the engine's shutdown handler.
+     * The shutdown handler is responsible for
+     * shutting down the JVM safely.
+     *
+     * @param shutdownHandler new shutdown handler
+     * @see ShutdownHandler
+     * @since v1-alpha2
+     */
+    @Getter(value = AccessLevel.MODULE)
+    @Setter(value = AccessLevel.MODULE)
+    private @NotNull ShutdownHandler shutdownHandler = new Engine.JvmShutdownHandler();
+
+    /**
+     * Contains the JVM shutdown hook thread,
+     * which ensures that the engine is fully shut
+     * down before the JVM exits.
+     *
+     * @see EngineInternals#installSafetyShutdownHook(boolean)
+     * @since v1-alpha4
+     */
+    @Getter(AccessLevel.MODULE)
+    private final @NotNull Thread safetyShutdownHook = Thread.ofPlatform()
+            .name("Engine shutdown thread")
+            .group(getThreadGroup())
+            .unstarted(() -> {
+                // Check if already shutting down
+                switch (state) {
+                    case UNKNOWN, SHUTDOWN, CRASHED -> {
+                        return;
+                    }
+                }
+
+                // Print warning about shutdown
+                Logger.warn("Trying to shut down engine using shutdown hook.\nThis approach to shutting down the engine and JVM is NOT RECOMMENDED, please use Engine#shutdown() instead.");
+
+                // Shutdown
+                Engine.getInstance().shutdown();
+
+                // Print last message
+                Logger.warn("Engine successfully shut down using shutdown hook. PLEASE USE Engine#shutdown() INSTEAD OF System#exit() or Runtime#exit()!");
+            });
+
+    /**
+     * Initializes the StarOpenSource Engine.
+     *
+     * @throws RuntimeException for all exceptions thrown by this constructor
+     * @since v1-alpha8
+     */
+    private Engine() throws RuntimeException {
+        try {
+            instance = this;
+            state = EngineState.EARLY_STARTUP;
+
+            // For measuring the initialization time
+            long initTimeEarly = System.currentTimeMillis();
+            long initTimeLate = initTimeEarly;
+
+            // Check for incompatible JVM implementations
+            checkJvmIncompatibilities();
+
+            // Display that the engine is initializing
+            Logger.verb("Initializing engine");
+
+            // Start the logging thread
+            Logger.diag("Starting logging infrastructure");
+            LoggingThread.startThread(false);
+            PrintStreamService.initializeStreams();
+
+            // Initialize EngineInternals
+            Logger.diag("Initializing EngineInternals class");
+            new EngineInternals();
+
+            // Load engine configuration
+            Logger.diag("Loading engine configuration");
+            new EngineConfiguration();
+            EngineConfiguration.getInstance().loadConfiguration();
+
+            // Load engine build information
+            Logger.diag("Loading engine build information");
+            EngineInformation.update();
+
+            // Check for reflective classpath scanning compatibility
+            checkReflectiveClasspathScanningCompatibility();
+
+            // Check for Java version incompatibilities
+            checkJavaVersion();
+
+            // Initialize PlaceholderEngine
+            Logger.diag("Initializing PlaceholderEngine");
+            PlaceholderEngine.initialize();
+
+            // Initialize static FileAccess instances
+            Logger.diag("Initializing static FileAccess instances");
+            FileAccess.initializeInstances();
+
+            // Install the safety shutdown hook
+            Logger.diag("Installing safety shutdown hook");
+            EngineInternals.getInstance().installSafetyShutdownHook(true);
+
+            // Cache events
+            Logger.diag("Caching event listeners");
+            cacheEvents();
+
+            // Complete early initialization stage
+            Logger.verb("Completing early initialization stage");
+            state = EngineState.STARTUP;
+            initTimeEarly = System.currentTimeMillis() - initTimeEarly;
+
+            // Perform automatic subsystem initialization
+            if (EngineConfiguration.getInstance().isInitialPerformSubsystemInitialization()) {
+                // Collect all subsystems
+                Logger.diag("Collecting subsystems");
+                collectSubsystems();
+
+                // Initialize subsystems
+                try {
+                    initializeSubsystems();
+                } catch (Exception exception) {
+                    Logger.error("Subsystem dependency resolution failed");
+                }
+            }
+
+            // Complete late initialization stage
+            Logger.verb("Completing late initialization stage");
+            state = EngineState.RUNNING;
+            initTimeLate = System.currentTimeMillis() - initTimeLate;
+
+            // Print welcome message
+            Logger.info(
+                    """
+                    Welcome to the StarOpenSource Engine "%engine_version_codename%" %engine_version%!
+                    Running commit %engine_git_commit_id_long% (dirty %engine_git_dirty%).
+                    Initialization took %init_time_total%ms (early %init_time_early%ms, late %init_time_late%ms).
+                    
+                    Copyright (c) 2024 The StarOpenSource Engine Authors
+                    Licensed under the GNU Affero General Public License v3"""
+                            .replace("%init_time_total%", String.valueOf(initTimeEarly + initTimeLate))
+                            .replace("%init_time_early%", String.valueOf(initTimeEarly))
+                            .replace("%init_time_late%", String.valueOf(initTimeLate))
+            );
+        } catch (Exception exception) {
+            throw new RuntimeException(exception);
+        }
+    }
+
+    /**
+     * Initializes the StarOpenSource
+     * Engine, if it isn't already.
+     *
+     * @throws IllegalStateException when running in an incompatible environment
+     * @throws RuntimeException      on engine initialization failure
+     * @since v1-alpha6
+     */
+    public static void initialize() throws RuntimeException {
+        try {
+            if (instance == null)
+                new Engine();
+        } catch (RuntimeException exception) {
+            Logger.error("Engine initialization failed\n" + Miscellaneous.stacktraceAsStringRecursive(exception.getCause(), true, true));
+            Logger.flush();
+
+            throw new RuntimeException("Engine initialization failed", exception.getCause());
+        }
+    }
+
+    /**
+     * Checks if the running JVM implementation is not supported by the engine.
+     *
+     * @since v1-alpha8
+     */
+    private void checkJvmIncompatibilities() {
+        if (System.getProperties().getProperty("sosengine.base.allowUnsupportedJVMInitialization", "false").equals("true")) {
+            Logger.warn("Skipping JVM implementation incompatibilities check");
+            return;
+        }
+
+        // Substrate VM (GraalVM Community)
+        if (JvmInformation.getImplementationName().equals("Substrate VM") && JvmInformation.getImplementationVendor().equals("GraalVM Community")) {
+            Logger.error("##############################################################################################");
+            Logger.error("## Running in Substrate VM, which is the name of the JVM used by GraalVM native-image.      ##");
+            Logger.error("## The StarOpenSource Engine does not support native-image as using reflection in a certain ##");
+            Logger.error("## way seems to cause the Substrate JVM to crash. Workarounds have failed.                  ##");
+            Logger.error("## This has already been noted in issue #3, which you can view here:                        ##");
+            Logger.error("## https://git.staropensource.de/StarOpenSource/Engine/issues/3                             ##");
+            Logger.error("##                                                                                          ##");
+            Logger.error("## While this is sad, we unfortunately can't do anything against it unless we introduce     ##");
+            Logger.error("## annoying and stupid changes into the engine, which we don't want to do.                  ##");
+            Logger.error("##                                                                                          ##");
+            Logger.error("## We're truly sorry for this inconvenience. The sos!engine will now terminate.             ##");
+            Logger.error("##############################################################################################");
+            Runtime.getRuntime().exit(255);
+        }
+    }
+
+    /**
+     * Checks if reflective classpath scanning is supported.
+     *
+     * @since v1-alpha8
+     */
+    private void checkReflectiveClasspathScanningCompatibility() {
+        // Check if reflective classpath scanning is supported
+        if (System.getProperties().getProperty("sosengine.base.considerEnvironmentUnfriendlyToClasspathScanning", "false").equals("true")) {
+            Logger.warn("Running in an classpath scanning-unfriendly environment, disabling classpath scanning support.");
+            Logger.warn("If shit doesn't work and is expected to be discovered by annotations, you'll need to");
+            Logger.warn("either register it first or have to update some engine configuration setting.");
+            Logger.warn("Please consult sos!engine's documentation for more information about this issue.");
+            EngineInternals.getInstance().overrideReflectiveClasspathScanning(false);
+        }
+    }
+
+    /**
+     * Checks and warns if the Java version of the
+     * running JVM is higher than the engine supports.
+     *
+     * @since v1-alpha8
+     */
+    private void checkJavaVersion() {
+        if (JvmInformation.getJavaVersion() > EngineInformation.getJavaSource())
+            Logger.warn("The StarOpenSource Engine is running on an untested Java version.\nThings may not work as expected or features which can improve performance, stability, compatibility or ease of use may be missing.\nIf you encounter issues, try running a JVM implementing Java " + EngineInformation.getJavaSource());
+    }
+
+    /**
+     * Caches all base engine events.
+     *
+     * @since v1-alpha0
+     */
+    private void cacheEvents() {
+        EventHelper.cacheEvent(EngineCrashEvent.class);
+        EventHelper.cacheEvent(EngineShutdownEvent.class);
+        EventHelper.cacheEvent(EngineSoftCrashEvent.class);
+        EventHelper.cacheEvent(InternalEngineShutdownEvent.class);
+        EventHelper.cacheEvent(LogEvent.class);
+    }
+
+    /**
+     * Collects all subsystems by their {@link EngineSubsystem} annotation.
+     *
+     * @since v1-alpha1
+     */
+    private void collectSubsystems() {
+        ArrayList<@NotNull DependencySubsystemVector> subsystemsMutable = new ArrayList<>();
+        Object initializedClassRaw;
+        SubsystemClass initializedClass;
+
+        // Check and initialize all classes, get dependency vector and check version, then add to 'subsystemsMutable'
+        for (Class<?> clazz : getRawSubsystemClasses())
+            try {
+                // Create new instance
+                initializedClassRaw = clazz.getDeclaredConstructor().newInstance();
+                initializedClass = null;
+
+                // Check if class implements SubsystemMainClass
+                if (initializedClassRaw instanceof SubsystemClass)
+                    initializedClass = (SubsystemClass) initializedClassRaw;
+                else
+                    Logger.crash("Failed to initialize subsystem " + clazz.getName() + ": Does not implement " + SubsystemClass.class.getName());
+
+                //noinspection DataFlowIssue // the crash call will prevent a NullPointerException
+                subsystemsMutable.add(new DependencySubsystemVector(initializedClass.getDependencyVector(), initializedClass));
+            } catch (Exception exception) {
+                if (exception.getClass() == IllegalStateException.class && exception.getMessage().startsWith("The version string is invalid: "))
+                    Logger.crash("Failed to initialize subsystem " + clazz.getName() + ": Invalid version string: " + exception.getMessage().replace("The version string is invalid: ", ""));
+                Logger.crash("Failed to initialize subsystem " + clazz.getName() + ": Method invocation error", exception);
+            }
+
+        // Update 'subsystems'
+        subsystems = Collections.unmodifiableList(subsystemsMutable);
+    }
+
+    /**
+     * Returns a list of classes which are potentially
+     * eligible for subsystem initialization.
+     *
+     * @return potential subsystem classes
+     * @since v1-alpha5
+     */
+    private Set<@NotNull Class<?>> getRawSubsystemClasses() {
+        Set<@NotNull Class<?>> classes = new HashSet<>();
+
+        if (EngineInternals.getInstance().getReflectiveClasspathScanning()) {
+            // Scan entire classpath using the Reflections library
+            Reflections reflections = new Reflections(
+                    new ConfigurationBuilder()
+                            .setUrls(ClasspathHelper.forJavaClassPath())
+                            .setScanners(Scanners.TypesAnnotated)
+            );
+
+            // Get annotated methods
+            classes = reflections.getTypesAnnotatedWith(EngineSubsystem.class);
+        } else
+            for (String path : EngineConfiguration.getInstance().getInitialIncludeSubsystemClasses())
+                try {
+                    Logger.diag("Resolving class " + path);
+                    classes.add(Class.forName(path));
+                } catch (ClassNotFoundException exception) {
+                    Logger.error("Failed loading subsystem class " + path + ": Class not found");
+                }
+
+        return classes;
+    }
+
+    /**
+     * Initializes all subsystems.
+     *
+     * @throws Exception exceptions thrown by the {@link DependencyResolver}
+     * @since v1-alpha1
+     */
+    private void initializeSubsystems() throws Exception {
+        DependencyResolver resolver = new DependencyResolver();
+        LinkedList<DependencySubsystemVector> order = new LinkedList<>();
+
+        // Add vectors
+        resolver.addVector(getDependencyVector());
+        resolver.addVectors(subsystems);
+
+        // Resolve dependencies and get order
+        Logger.diag("Resolving subsystem dependencies");
+        try {
+            for (DependencyVector vector : resolver.resolve().getOrder())  // smol workaround
+                order.add((DependencySubsystemVector) vector);
+        } catch (Throwable throwable) {
+            if (throwable instanceof UnmetDependenciesException exception) {
+                List<@NotNull String> unmetDependencies = exception.getUnmetDependencies();
+                StringBuilder list = new StringBuilder();
+
+                for (String error : unmetDependencies)
+                    list
+                            .append("\n")
+                            .append("- ")
+                            .append(error);
+
+                Logger.crash("Found unresolved dependencies:" + list, throwable);
+                return;
+            }
+            Logger.crash("An error occurred trying to resolve subsystem dependencies: " + throwable.getClass().getName() + (throwable.getMessage() == null ? "" : ": " + throwable.getMessage()));
+            throw throwable;
+        }
+
+        // Initialize subsystems
+        Logger.diag("Initializing engine subsystems");
+        long initTime;
+        for (DependencySubsystemVector vector : subsystems) {
+            Logger.diag("Initializing subsystem '" + vector.getSubsystemClass().getName() + "' (" + vector.getSubsystemClass().getClass().getName() + ")");
+            try {
+                initTime = Miscellaneous.measureExecutionTime(() -> vector.getSubsystemClass().initializeSubsystem());
+            } catch (Throwable throwable) {
+                Logger.crash("An error occurred trying to initialize subsystem " + vector.getSubsystemClass().getName() + " (" + vector.getSubsystemClass().getClass().getName() + "): " + throwable.getClass().getName() + (throwable.getMessage() == null ? "" : ": " + throwable.getMessage()));
+                throw throwable;
+            }
+            Logger.diag("Initialized subsystem '" + vector.getSubsystemClass().getName() + "' (" + vector.getSubsystemClass().getClass().getName() + ") in " + initTime + "ms");
+        }
+
+        // Update 'subsystems'
+        subsystems = Collections.unmodifiableList(order);
+    }
+
+    /**
+     * Shuts the engine down.
+     *
+     * @param exitCode code to exit with, from 0-255
+     * @since v1-alpha0
+     */
+    public synchronized void shutdown(@Range(from = 0, to = 255) int exitCode) {
+        if (state == EngineState.UNKNOWN || state == EngineState.SHUTDOWN)
+            return;
+
+        Logger.info("Shutting engine down");
+        if (state != EngineState.CRASHED)
+            state = EngineState.SHUTDOWN;
+
+        // Make engine single-threaded
+        Properties properties = new Properties();
+        properties.setProperty("sosengine.base.optimizeLogging", "false");
+        properties.setProperty("sosengine.base.optimizeEvents", "false");
+        EngineConfiguration.getInstance().loadConfiguration(properties);
+
+        // Flush log messages
+        LoggingQueue.flush();
+
+        // Disable safety shutdown hook
+        try {
+            Runtime.getRuntime().removeShutdownHook(safetyShutdownHook);
+        } catch (Exception ignored) {}
+
+        // Send events
+        Logger.verb("Notifying classes about shutdown");
+        new EngineShutdownEvent().callEvent();
+
+        Logger.verb("Notifying subsystems about shutdown");
+        new InternalEngineShutdownEvent().callEvent();
+
+        // Delete scheduled files
+        FileAccess.deleteScheduled();
+
+        // Invoke shutdown handler
+        Logger.verb("Invoking shutdown handler (code " + exitCode + ")");
+        shutdownHandler.shutdown((short) exitCode);
+    }
+
+    /**
+     * Shuts the engine down.
+     *
+     * @since v1-alpha0
+     */
+    public void shutdown() {
+        if (instance != null)
+            instance.shutdown(0);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "base";
+    }
+
+    /**
+     * This method does nothing.
+     *
+     * @since v1-alpha1
+     */
+    @Override
+    public void initializeSubsystem() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull DependencyVector getDependencyVector() {
+        return new DependencyVector.Builder()
+                .setIdentifier("engine")
+                .setVersioningSystem(StarOpenSourceVersioningSystem.class)
+                .setVersion(EngineInformation.getVersioningString())
+                .build();
+    }
+
+    /**
+     * Sets the engine state.
+     *
+     * @param state new state
+     * @throws IllegalAccessException if the caller class is unauthorized
+     * @since v1-alpha2
+     */
+    public void setState(@NotNull EngineState state) throws IllegalAccessException {
+        if (!Thread.currentThread().getStackTrace()[2].getClassName().startsWith("de.staropensource.engine.base."))
+            throw new IllegalAccessException("Only classes inside the \"de.staropensource.engine.base\" package are allowed to call this method.");
+
+        this.state = state;
+    }
+
+    /**
+     * The default shutdown handler, which causes the JVM to exit.
+     *
+     * @see ShutdownHandler
+     * @see System#exit(int)
+     * @since v1-alpha2
+     */
+    public static final class JvmShutdownHandler implements ShutdownHandler {
+        /**
+         * Constructs this class.
+         *
+         * @since v1-alpha2
+         */
+        public JvmShutdownHandler() {}
+
+        /** {@inheritDoc} */
+        @Override
+        public void shutdown(short exitCode) {
+            // Check if already shutting down
+            try {
+                Thread thread = Thread.ofVirtual().unstarted(() -> {});
+
+                Runtime.getRuntime().addShutdownHook(thread);
+                Runtime.getRuntime().removeShutdownHook(thread);
+            } catch (IllegalStateException exception) {
+                Logger.warn("Terminating JVM: Already shutting down, skipping");
+                return;
+            }
+
+            Logger.warn("Terminating JVM");
+            Runtime.getRuntime().exit(exitCode);
+        }
+    }
+}

base/src/main/java/de/staropensource/engine/base/EngineConfiguration.java

@@ -0,0 +1,526 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base;
+
+import de.staropensource.engine.base.annotation.EngineSubsystem;
+import de.staropensource.engine.base.event.LogEvent;
+import de.staropensource.engine.base.implementable.Configuration;
+import de.staropensource.engine.base.implementable.ShortcodeParser;
+import de.staropensource.engine.base.implementable.SubsystemClass;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.logging.backend.async.LoggingThread;
+import de.staropensource.engine.base.type.EngineState;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import de.staropensource.engine.base.type.vector.Vec2f;
+import de.staropensource.engine.base.type.vector.Vec2i;
+import de.staropensource.engine.base.utility.PropertiesReader;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+/**
+ * Provides the base engine configuration.
+ * <p>
+ * This class does not only provide engine settings but is also
+ * responsible for loading them into memory from {@link Properties} objects.
+ * <p>
+ * Now you might ask why we didn't go with the string-based approach.
+ * The answer is simple: It's a maintenance burden.
+ * Having various settings strings scattered across many classes will cause
+ * trouble at some point, which will cause some strings to be undocumented
+ * or have an inconsistent naming scheme. Containing settings as variables in
+ * one centralized place mitigates this.
+ *
+ * @since v1-alpha0
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class EngineConfiguration extends Configuration {
+    /**
+     * Contains the class instance.
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns the class instance.
+     *
+     * @return class instance unless {@link Engine} is uninitialized
+     * @since v1-alpha0
+     */
+    @Getter
+    private static EngineConfiguration instance;
+
+    /**
+     * Contains the configuration prefix.
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns the configuration prefix.
+     *
+     * @return property group
+     * @since v1-alpha0
+     */
+    private final @NotNull String group = "sosengine.base.";
+
+
+    /**
+     * Contains if debugging options should be allowed.
+     * All debugging options will be forcefully set to
+     * {@code false} if this option is set to {@code false}.
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns if debugging options should be allowed.
+     * All debugging options will be forcefully set to
+     * {@code false} if this option is set to {@code false}.
+     *
+     * @return debugging enabled?
+     * @since v1-alpha0
+     */
+    private boolean debug;
+
+    /**
+     * Contains whether or not to log
+     * events being emitted.
+     * <p>
+     * This will cause all events to
+     * be logged, with the exception
+     * of the {@link LogEvent}.
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns whether or not to log
+     * events being emitted.
+     * <p>
+     * This will cause all events to
+     * be logged, with the exception
+     * of the {@link LogEvent}.
+     *
+     * @return detailed event logging enabled?
+     * @since v1-alpha0
+     */
+    private boolean debugEvents;
+
+
+    /**
+     * Contains whether or not to automatically discover
+     * and initialize any class extending {@link SubsystemClass}
+     * whilst being annotated with {@link EngineSubsystem}.
+     * <p>
+     * This mechanism may fail in certain situations, where
+     * manual subsystem initialization may be desired. Make
+     * sure to disable this setting before engine startup
+     * and then initialize all subsystems manually.
+     *
+     * @see Engine
+     * @since v1-alpha5
+     * -- GETTER --
+     * Returns whether or not to automatically discover
+     * and initialize any class extending {@link SubsystemClass}
+     * whilst being annotated with {@link EngineSubsystem}.
+     * <p>
+     * This mechanism may fail in certain situations, where
+     * manual subsystem initialization may be desired. Make
+     * sure to disable this setting before engine startup
+     * and then initialize all subsystems manually.
+     *
+     * @return automatically discover and initialize subsystems?
+     * @since v1-alpha5
+     */
+    private boolean initialPerformSubsystemInitialization;
+
+    /**
+     * Contains a set of class names to try to load
+     * and initialize as subsystems. Will only take effect
+     * if {@link #initialPerformSubsystemInitialization} is
+     * turned off.
+     *
+     * @since v1-alpha5
+     * -- GETTER --
+     * Returns a set of class names to try to load
+     * and initialize as subsystems. Will only take effect
+     * if {@link #getInitialIncludeSubsystemClasses()} is
+     * turned off.
+     *
+     * @return set of class names to try and initialize as subsystems
+     * @since v1-alpha5
+     */
+    private Set<@NotNull String> initialIncludeSubsystemClasses;
+
+
+    /**
+     * Contains whether or not to complain about invalid
+     * shortcodes.
+     * <p>
+     * Requires the active log level to be set at least
+     * to {@link LogLevel#SILENT_WARNING} to have effect.
+     *
+     * @see #logLevel
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns whether or not to complain about invalid
+     * shortcodes.
+     * <p>
+     * Requires the active log level to be set at least
+     * to {@link LogLevel#SILENT_WARNING} to have effect.
+     *
+     * @return complain about invalid shortcodes?
+     * @see #getLogLevel()
+     * @since v1-alpha0
+     */
+    private boolean errorShortcodeParser;
+
+
+    /**
+     * Contains if to log asynchronously.
+     * <p>
+     * If enabled, will cause a logging thread
+     * to spawn. All log messages will be queued
+     * and printed after a set delay
+     * ({@link #logPollingSpeed}).
+     * Highly recommended to keep enabled, or
+     * the performance of your application will
+     * very likely suffer.
+     *
+     * @see #logPollingSpeed
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns if to log asynchronously.
+     * <p>
+     * If enabled, will cause a logging thread
+     * to spawn. All log messages will be queued
+     * and printed after a set delay
+     * ({@link #getLogPollingSpeed()}).
+     * Highly recommended to keep enabled, or
+     * the performance of your application will
+     * very likely suffer.
+     *
+     * @return log asynchronously?
+     * @see #getLogPollingSpeed()
+     * @since v1-alpha0
+     */
+    private boolean optimizeLogging;
+
+    /**
+     * Contains whether or not to emit events
+     * asynchronously.
+     * <p>
+     * This will cause a
+     * <a href="https://openjdk.org/jeps/444">VirtualThread</a>
+     * to spawn every time an event is emitted.
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Contains whether or not to emit events
+     * asynchronously.
+     * <p>
+     * This will cause a
+     * <a href="https://openjdk.org/jeps/444">VirtualThread</a>
+     * to spawn every time an event is emitted.
+     *
+     * @return emit events asynchronously?
+     * @since v1-alpha0
+     */
+    private boolean optimizeEvents;
+
+
+    /**
+     * Contains the minimum allowed log level.
+     * <p>
+     * The priority list is as follows (from high to low priority):
+     * <ul>
+     *     <li>{@link LogLevel#CRASH}</li>
+     *     <li>{@link LogLevel#ERROR}</li>
+     *     <li>{@link LogLevel#WARNING}</li>
+     *     <li>{@link LogLevel#INFORMATIONAL}</li>
+     *     <li>{@link LogLevel#SILENT_WARNING}</li>
+     *     <li>{@link LogLevel#VERBOSE}</li>
+     *     <li>{@link LogLevel#DIAGNOSTIC}</li>
+     * </ul>
+     *
+     * @since v1-alpha0
+     * -- GETTER --
+     * Returns the minimum allowed log level.
+     * <p>
+     * The priority list is as follows (from high to low priority):
+     * <ul>
+     *     <li>{@link LogLevel#CRASH}</li>
+     *     <li>{@link LogLevel#ERROR}</li>
+     *     <li>{@link LogLevel#WARNING}</li>
+     *     <li>{@link LogLevel#INFORMATIONAL}</li>
+     *     <li>{@link LogLevel#SILENT_WARNING}</li>
+     *     <li>{@link LogLevel#VERBOSE}</li>
+     *     <li>{@link LogLevel#DIAGNOSTIC}</li>
+     * </ul>
+     *
+     * @return minimum allowed log level
+     * @since v1-alpha0
+     */
+    private LogLevel logLevel;
+
+    /**
+     * Contains a comma-separated list of optional
+     * features to add to the final log output.
+     * <p>
+     * Available features (in order of appearance):
+     * <ul>
+     *     <li><code>formatting</code></li>
+     *     <li><code>runtime</code></li>
+     *     <li><code>date</code></li>
+     *     <li><code>time</code></li>
+     *     <li><code>shortIssuerClass</code></li>
+     *     <li><code>moduleName</code></li>
+     *     <li><code>moduleVersion</code> (requires <code>moduleName</code>)</li>
+     *     <li><code>methodName</code></li>
+     *     <li><code>lineNumber</code></li>
+     * </ul>
+     *
+     * @since v1-alpha8
+     * -- GETTER --
+     * Returns a comma-separated list of optional
+     * features to add to the final log output.
+     * <p>
+     * Available features (in order of appearance):
+     * <ul>
+     *     <li><code>formatting</code></li>
+     *     <li><code>runtime</code></li>
+     *     <li><code>date</code></li>
+     *     <li><code>time</code></li>
+     *     <li><code>shortIssuerClass</code></li>
+     *     <li><code>moduleName</code></li>
+     *     <li><code>moduleVersion</code> (requires <code>moduleName</code>)</li>
+     *     <li><code>methodName</code></li>
+     *     <li><code>lineNumber</code></li>
+     *     <li><code>level</code></li>
+     *     <li><code>origin</code></li>
+     * </ul>
+     *
+     * @return optional features to enable
+     * @since v1-alpha8
+     */
+    private Set<@NotNull String> logFeatures;
+
+    /**
+     * Contains how fast the logging thread will
+     * poll for queued messages in milliseconds.
+     * This also causes messages to be buffered.
+     * <p>
+     * Only applies if {@code optimizeLogging} is turned on.
+     * Values below {@code 1} will poll for queued messages
+     * as fast as it can. This however has pretty much no
+     * benefit. Leave it at {@code 5}, it works quite well.
+     *
+     * @see #optimizeLogging
+     * @since v1-alpha4
+     * -- GETTER --
+     * Contains how fast the logging thread will
+     * poll for queued messages, in milliseconds.
+     * This also causes messages to be buffered.
+     * <p>
+     * Only applies if {@code optimizeLogging} is turned on.
+     * Values below {@code 1} will poll for queued messages
+     * as fast as it can. This however has pretty much no
+     * benefit. Leave it at {@code 5}, it works quite well.
+     *
+     * @return logging thread polling speed in milliseconds
+     * @see #isOptimizeLogging()
+     * @since v1-alpha4
+     */
+    private int logPollingSpeed;
+
+    /**
+     * Contains whether or not to forcefully write
+     * to the standard output instead of the
+     * standard error stream.
+     * <p>
+     * This only applies to the {@link LogLevel#ERROR} and
+     * {@link LogLevel#CRASH} log levels, as these use
+     * the standard error stream by default.
+     *
+     * @see <a href="https://man7.org/linux/man-pages/man3/stderr.3.html">man page about standard streams</a>
+     * @since v1-alpha0
+     * -- GETTER --
+     * Contains whether or not to forcefully write
+     * to the standard output instead of the
+     * standard error stream.
+     * <p>
+     * This only applies to the {@link LogLevel#ERROR} and
+     * {@link LogLevel#CRASH} log levels, as these use
+     * the standard error stream by default.
+     *
+     * @return force use stdout?
+     * @see <a href="https://man7.org/linux/man-pages/man3/stderr.3.html">man page about standard streams</a>
+     * @since v1-alpha0
+     */
+    private boolean logForceStandardOutput;
+
+
+    /**
+     * Contains if to truncate the full path
+     * of a class when invoking using their
+     * {@link #toString()} method.
+     * <p>
+     * Here's an example: Lets say that you have a
+     * {@link Vec2f} instance and want to convert
+     * it to a String. You can do that by using
+     * {@link Vec2f}'s {@link Vec2f#toString()}
+     * method. With this flag disabled it will
+     * return
+     * {@code de.staropensource.engine.base.types.vectors.}{@link Vec2i}{@code (x=64 y=64)}.
+     * With this flag enabled however the method will return
+     * {@link Vec2i}{@code (x=64 y=64)},
+     * which is much smaller.
+     *
+     * @since v1-alpha2
+     * -- GETTER --
+     * Returns if to truncate the full path
+     * of a class when invoking using their
+     * {@link #toString()} method.
+     * <p>
+     * Here's an example: Lets say that you have a
+     * {@link Vec2f} instance and want to convert
+     * it to a String. You can do that by using
+     * {@link Vec2f}'s {@link Vec2f#toString()}
+     * method. With this flag disabled it will
+     * return
+     * {@code de.staropensource.engine.base.types.vectors.}{@link Vec2i}{@code (x=64 y=64)}.
+     * With this flag enabled however the method will return
+     * {@link Vec2i}{@code (x=64 y=64)},
+     * which is much smaller.
+     *
+     * @return truncate class paths?
+     * @since v1-alpha2
+     */
+    private boolean hideFullTypePath;
+
+    /**
+     * Constructs this class.
+     *
+     * @see Engine
+     * @since v1-alpha6
+     */
+    EngineConfiguration() {
+        super();
+
+        instance = this;
+
+        // Load default configuration
+        loadDefaultConfiguration();
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    protected void matchProperty(@NotNull PropertiesReader parser, @NotNull String property) {
+        try {
+            switch (property) {
+                case "debug" -> debug = parser.getBoolean(group + property);
+                case "debugEvents" -> debugEvents = parser.getBoolean(group + property);
+
+                case "initialPerformSubsystemInitialization" -> initialPerformSubsystemInitialization = parser.getBoolean(group + property);
+                case "initialIncludeSubsystemClasses" -> {
+                    initialIncludeSubsystemClasses = new HashSet<>();
+                    initialIncludeSubsystemClasses.addAll(Arrays.stream(parser.getString(group + property).split(",")).toList());
+                }
+
+                case "errorShortcodeParser" -> errorShortcodeParser = parser.getBoolean(group + property);
+
+                case "optimizeLogging" -> {
+                    optimizeLogging = parser.getBoolean(group + property);
+
+                    // Start logging thread automatically
+                    if (optimizeLogging && Engine.getInstance().getState() == EngineState.RUNNING) {
+                        LoggingThread.startThread(false);
+                    }
+                }
+                case "optimizeEvents" -> optimizeEvents = parser.getBoolean(group + property);
+
+                case "logLevel" -> {
+                    try {
+                        logLevel = LogLevel.valueOf(parser.getString(group + property).toUpperCase());
+                    } catch (IllegalArgumentException ignored) {
+                        Logger.error("The log level '" + parser.getString(group + property) + "' is not valid");
+                    }
+                }
+                case "logFeatures" -> logFeatures = Set.copyOf(Arrays.stream(parser.getString(group + property).split(",")).toList());
+                case "logPollingSpeed" -> logPollingSpeed = parser.getInteger(group + property, true);
+                case "logForceStandardOutput" -> logForceStandardOutput = parser.getBoolean(group + property);
+
+                case "hideFullTypePath" -> hideFullTypePath = parser.getBoolean(group + property);
+            }
+        } catch (NullPointerException ignored) {}
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    protected void processSettings(@NotNull PropertiesReader parser) {
+        // Disable all debugging switches if 'debug' is disabled
+        if (!debug) {
+            debugEvents = false;
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void loadDefaultConfiguration() {
+        debug = false;
+        debugEvents = false;
+
+        initialPerformSubsystemInitialization = true;
+        initialIncludeSubsystemClasses = new HashSet<>();
+
+        errorShortcodeParser = true;
+
+        optimizeLogging = true;
+        optimizeEvents = true;
+
+        logLevel = LogLevel.INFORMATIONAL;
+        logFeatures = Set.of("formatting", "time", "methodName", "lineNumber", "level", "origin");
+        logPollingSpeed = 5;
+        logForceStandardOutput = false;
+
+        hideFullTypePath = false;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @Nullable Object getSetting(@NotNull String setting) {
+        return switch (setting) {
+            case "debug" -> debug;
+            case "debugEvents" -> debugEvents;
+
+            case "initialPerformSubsystemInitialization" -> initialPerformSubsystemInitialization;
+            case "initialIncludeSubsystemClasses" -> initialIncludeSubsystemClasses;
+
+            case "errorShortcodeParser" -> errorShortcodeParser;
+
+            case "optimizeLogging" -> optimizeLogging;
+            case "optimizeEvents" -> optimizeEvents;
+
+            case "logLevel" -> logLevel;
+            case "logFeatures" -> logFeatures;
+            case "logPollingSpeed" -> logPollingSpeed;
+            case "logForceStandardOutput" -> logForceStandardOutput;
+
+            case "hideFullTypePath" -> hideFullTypePath;
+            default -> null;
+        };
+    }
+}

base/src/main/java/de/staropensource/engine/base/EngineInternals.java

@@ -0,0 +1,226 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base;
+
+import de.staropensource.engine.base.exception.IllegalAccessException;
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.EventListenerCode;
+import de.staropensource.engine.base.implementable.ShutdownHandler;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.type.InternalAccessArea;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Class which allows access to the internals
+ * and changing the behaviour of the engine.
+ *
+ * @since v1-alpha4
+ */
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class EngineInternals {
+    /**
+     * Contains the class instance.
+     *
+     * @since v1-alpha4
+     * -- GETTER --
+     * Returns the class instance.
+     *
+     * @return class instance unless the engine is uninitialized
+     * @since v1-alpha4
+     */
+    @Getter
+    private static EngineInternals instance;
+
+    /**
+     * Contains all disabled internal access areas.
+     *
+     * @since v1-alpha4
+     * -- GETTER --
+     * Returns all disabled internal access areas.
+     *
+     * @return restricted areas
+     * @since v1-alpha4
+     */
+    @Getter
+    private final @NotNull List<@NotNull InternalAccessArea> restrictedAreas = new ArrayList<>();
+
+    /**
+     * Contains whether the engine should reflectively
+     * search the classpath for events or other annotations.
+     * <p>
+     * If disabled, code will either have to manually call
+     * registration methods or certain classes have to
+     * be created in a certain package, depending on the
+     * use case and application.
+     *
+     * @see EventHelper#registerEvent(Class, EventListenerCode)
+     * @see EventHelper#registerEvent(Class, EventListenerCode, Event.Priority)
+     * @since v1-alpha5
+     */
+    private boolean reflectiveClasspathScanning = true;
+
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha6
+     */
+     EngineInternals() {
+         // Only allow one instance
+         if (instance == null && Engine.getInstance() != null)
+             instance = this;
+         else
+             Logger.crash("Only one instance of this class is allowed, use getInstance() instead of creating a new instance");
+    }
+
+    /**
+     * Determines whether access to the specified area is allowed.
+     *
+     * @param area internal access area to check
+     * @throws IllegalAccessException when restricted
+     * @since v1-alpha4
+     */
+    private void isRestricted(@NotNull InternalAccessArea area) throws IllegalAccessException {
+        if (restrictedAreas.contains(area))
+            throw new IllegalAccessException("The internal access area " + area.name() + " has been restricted");
+    }
+
+    /**
+     * Restricts access to certain areas of this class.
+     *
+     * @param area area to restrict
+     * @since v1-alpha4
+     */
+    public void restrictAccess(@NotNull InternalAccessArea area) {
+        switch (area) {
+            case ALL -> {
+                List<@NotNull InternalAccessArea> areas = new ArrayList<>(List.of(InternalAccessArea.values()));
+                areas.remove(InternalAccessArea.ALL);
+                areas.remove(InternalAccessArea.ALL_READ);
+                areas.remove(InternalAccessArea.ALL_WRITE);
+                areas.remove(InternalAccessArea.ALL_READ_ESSENTIAL);
+                restrictedAreas.addAll(areas);
+            }
+            case ALL_WRITE -> restrictedAreas.addAll(Arrays.stream(InternalAccessArea.valuesWriteOnly()).toList());
+            case ALL_READ -> restrictedAreas.addAll(Arrays.stream(InternalAccessArea.valuesReadOnly()).toList());
+            case ALL_READ_ESSENTIAL -> restrictedAreas.addAll(Arrays.stream(InternalAccessArea.valuesEssentialReadOnly()).toList());
+            default -> restrictedAreas.add(area);
+        }
+    }
+
+    /**
+     * Installs or uninstalls the JVM shutdown
+     * hook, which prevents the JVM from exiting
+     * before the engine has fully shut down.
+     * Highly recommended to keep enabled.
+     *
+     * @param status {@code true} to install, {@code false} otherwise
+     * @throws IllegalAccessException when restricted ({@link InternalAccessArea#SAFETY_SHUTDOWN_HOOK_UPDATE})
+     * @since v1-alpha4
+     */
+    public void installSafetyShutdownHook(boolean status) throws IllegalAccessException {
+        isRestricted(InternalAccessArea.SAFETY_SHUTDOWN_HOOK_UPDATE);
+
+        try {
+            if (status)
+                Runtime.getRuntime().addShutdownHook(Engine.getInstance().getSafetyShutdownHook());
+            else
+                Runtime.getRuntime().removeShutdownHook(Engine.getInstance().getSafetyShutdownHook());
+        } catch (IllegalArgumentException | IllegalStateException ignored) {}
+    }
+
+    /**
+     * Gets the engine's shutdown handler.
+     * The shutdown handler is responsible for
+     * shutting down the JVM safely.
+     *
+     * @return shutdown handler
+     * @throws IllegalAccessException when restricted ({@link InternalAccessArea#SHUTDOWN_HANDLER_GET})
+     * @since v1-alpha4
+     */
+    public @NotNull ShutdownHandler getShutdownHandler() throws IllegalAccessException {
+        isRestricted(InternalAccessArea.SHUTDOWN_HANDLER_GET);
+        return Engine.getInstance().getShutdownHandler();
+    }
+
+    /**
+     * Sets the engine's shutdown handler.
+     * The shutdown handler is responsible for
+     * shutting down the JVM safely.
+     *
+     * @param shutdownHandler new shutdown handler
+     * @throws IllegalAccessException when restricted ({@link InternalAccessArea#SHUTDOWN_HANDLER_UPDATE})
+     * @since v1-alpha4
+     */
+    public void setShutdownHandler(@NotNull ShutdownHandler shutdownHandler) throws IllegalAccessException {
+        isRestricted(InternalAccessArea.SHUTDOWN_HANDLER_UPDATE);
+        Engine.getInstance().setShutdownHandler(shutdownHandler);
+    }
+
+    /**
+     * Returns whether the engine should reflectively
+     * search the classpath for events or other annotations.
+     * <p>
+     * If disabled, code will either have to manually call
+     * registration methods or certain classes have to
+     * be created in a certain package, depending on the
+     * use case and application.
+     *
+     * @return reflective classpath scanning flag state
+     * @throws IllegalAccessException when restricted ({@link InternalAccessArea#REFLECTIVE_CLASSPATH_SCANNING_GET})
+     * @see EventHelper#registerEvent(Class, EventListenerCode)
+     * @see EventHelper#registerEvent(Class, EventListenerCode, Event.Priority)
+     * @since v1-alpha5
+     */
+    public boolean getReflectiveClasspathScanning() throws IllegalAccessException {
+        isRestricted(InternalAccessArea.REFLECTIVE_CLASSPATH_SCANNING_GET);
+        return reflectiveClasspathScanning;
+    }
+
+    /**
+     * Overrides whether the engine should reflectively
+     * search the classpath for events or other annotations.
+     * <p>
+     * If disabled, code will either have to manually call
+     * registration methods or certain classes have to
+     * be created in a certain package, depending on the
+     * use case and application.
+     * <p>
+     * Enabling reflective classpath scanning in an unsupported
+     * environment may cause minor to extreme side effects,
+     * including but not limited to <b>bugs, exceptions, engine
+     * or even whole JVM crashes</b>. <i>You have been warned!</i>
+     *
+     * @param reflectiveClasspathScanning new reflective classpath scanning
+     * @throws IllegalAccessException when restricted ({@link InternalAccessArea#REFLECTIVE_CLASSPATH_SCANNING_OVERRIDE})
+     * @see EventHelper#registerEvent(Class, EventListenerCode)
+     * @see EventHelper#registerEvent(Class, EventListenerCode, Event.Priority)
+     * @since v1-alpha5
+     */
+    public void overrideReflectiveClasspathScanning(boolean reflectiveClasspathScanning) throws IllegalAccessException {
+        isRestricted(InternalAccessArea.REFLECTIVE_CLASSPATH_SCANNING_OVERRIDE);
+        this.reflectiveClasspathScanning = reflectiveClasspathScanning;
+    }
+}

base/src/main/java/de/staropensource/engine/base/annotation/EngineSubsystem.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -17,16 +17,20 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package de.staropensource.engine.base.exception.io
+package de.staropensource.engine.base.annotation;
 
-import de.staropensource.engine.base.implementable.stream.FileStream
+import de.staropensource.engine.base.implementable.SubsystemClass;
+
+import java.lang.annotation.*;
 
 /**
- * Thrown when trying to
+ * Marks a class as a subsystem main class.
- * access a closed [FileStream].
+ * Make sure your subsystem implements {@link SubsystemClass}.
  *
- * @see FileStream
+ * @see SubsystemClass
- * @see FileStream.closed
+ * @since v1-alpha1
- * @since v1-alpha10
  */
-class StreamClosedException(stream: FileStream) : RuntimeException("The file stream ${stream} was access whilst already closed")
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+@Documented
+public @interface EngineSubsystem {}

base/src/main/java/de/staropensource/engine/base/annotation/EventListener.java

@@ -0,0 +1,54 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.annotation;
+
+import de.staropensource.engine.base.implementable.Event;
+import org.jetbrains.annotations.NotNull;
+
+import java.lang.annotation.*;
+
+/**
+ * Marks a method as an event listener, allowing it
+ * to respond to an events when it is emitted.
+ *
+ * @since v1-alpha0
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+@Documented
+public @interface EventListener {
+    /**
+     * Specifies the event to listen for.
+     *
+     * @return event to listen on
+     * @see Event
+     * @since v1-alpha0
+     */
+    @NotNull Class<? extends Event> event();
+
+    /**
+     * Specifies the priority of the event.
+     *
+     * @return event priority
+     * @see Event.Priority
+     * @since v1-alpha0
+     */
+    @NotNull Event.Priority priority() default Event.Priority.DEFAULT;
+}

base/src/main/java/de/staropensource/engine/base/annotation/package-info.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -18,8 +18,9 @@
  */
 
 /**
- * Annotations used by the engine and subsystems.
+ * Annotations used by the sos!engine to access
+ * classes and methods using reflection.
  *
- * @since v1-alpha10
+ * @since v1-alpha0
  */
 package de.staropensource.engine.base.annotation;

base/src/main/java/de/staropensource/engine/base/event/EngineCrashEvent.java

@@ -0,0 +1,43 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.event;
+
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+
+/**
+ * Called in the event of an engine crash.
+ *
+ * @since v1-alpha0
+ */
+public final class EngineCrashEvent implements Event {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineCrashEvent() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void callEvent() {
+        EventHelper.invokeAnnotatedMethods(getClass());
+    }
+}

base/src/main/java/de/staropensource/engine/base/event/EngineShutdownEvent.java

@@ -0,0 +1,43 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.event;
+
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+
+/**
+ * Called when the engine is about to shutdown.
+ *
+ * @since v1-alpha0
+ */
+public final class EngineShutdownEvent implements Event {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineShutdownEvent() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void callEvent() {
+        EventHelper.invokeAnnotatedMethods(getClass());
+    }
+}

base/src/main/java/de/staropensource/engine/base/event/EngineSoftCrashEvent.java

@@ -0,0 +1,47 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.event;
+
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+import de.staropensource.engine.base.logging.Logger;
+
+/**
+ * Called in the event of a soft engine crash
+ * ie. when a crash report is thrown but marked
+ * as handled.
+ *
+ * @see Logger#crash(Class, String, String, String, Throwable, boolean)
+ * @since v1-alpha0
+ */
+public final class EngineSoftCrashEvent implements Event {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineSoftCrashEvent() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void callEvent() {
+        EventHelper.invokeAnnotatedMethods(getClass());
+    }
+}

base/src/main/java/de/staropensource/engine/base/event/InternalEngineShutdownEvent.java

@@ -0,0 +1,45 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.event;
+
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+
+/**
+ * Called when the engine is about to shutdown, after {@link de.staropensource.engine.base.event.EngineShutdownEvent}.
+ * <p>
+ * Meant for subsystems to perform cleanup and shutdown routines, not for applications.
+ *
+ * @since v1-alpha0
+ */
+public final class InternalEngineShutdownEvent implements Event {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public InternalEngineShutdownEvent() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void callEvent() {
+        EventHelper.invokeAnnotatedMethods(getClass());
+    }
+}

base/src/main/java/de/staropensource/engine/base/event/LogEvent.java

@@ -0,0 +1,64 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.event;
+
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Called before a new log message is printed.
+ *
+ * @since v1-alpha0
+ */
+public final class LogEvent implements Event {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public LogEvent() {}
+
+    /**
+     * {@inheritDoc}
+     *
+     * @deprecated use the {@code callEvent} method with arguments
+     * @see #callEvent(LogLevel, Class, String, String, String)
+     */
+    @Deprecated
+    @Override
+    public void callEvent() {}
+
+    /**
+     * Emits the event and calls all event listeners.
+     *
+     * @param level          level
+     * @param issuerClass    issuer class
+     * @param issuerOrigin   issuer origin
+     * @param issuerMetadata issuer metadata
+     * @param message        message
+     * @since v1-alpha0
+     */
+    public void callEvent(@NotNull LogLevel level, @NotNull Class<?> issuerClass, @NotNull String issuerOrigin, @Nullable String issuerMetadata, @NotNull String message) {
+        EventHelper.invokeAnnotatedMethods(getClass(), level, issuerClass, issuerOrigin, issuerMetadata, message);
+    }
+}

base/src/main/java/de/staropensource/engine/base/event/package-info.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -18,8 +18,8 @@
  */
 
 /**
- * Data types used by the logging system.
+ * Events. There's nothing more to say.
  *
- * @since v1-alpha10
+ * @since v1-alpha1
  */
-package de.staropensource.engine.base.type.logging
+package de.staropensource.engine.base.event;

base/src/main/java/de/staropensource/engine/base/exception/IllegalAccessException.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown the throwing method is not allowed to be called.
+ *
+ * @since v1-alpha4
+ */
+public class IllegalAccessException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @since v1-alpha2
+     */
+    public IllegalAccessException() {}
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param message message
+     * @since v1-alpha2
+     */
+    public IllegalAccessException(@NotNull String message) {
+        super(message);
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/ParserException.java

@@ -0,0 +1,39 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when something fails to parse.
+ *
+ * @since v1-alpha2
+ */
+public class ParserException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param message parsing error
+     * @since v1-alpha2
+     */
+    public ParserException(@NotNull String message) {
+        super(message);
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/TristateConversionException.java

@@ -0,0 +1,42 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception;
+
+import de.staropensource.engine.base.type.Tristate;
+
+/**
+ * Thrown when converting a {@link Tristate} into a {@link Boolean} fails.
+ * <p>
+ * This exception inherits {@link RuntimeException} on purpose,
+ * as sometimes you may sure/have already validated that the
+ * {@link Tristate} is not {@link Tristate#UNSET}.
+ *
+ * @since v1-alpha2
+ */
+public class TristateConversionException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @since v1-alpha2
+     */
+    public TristateConversionException() {
+        super("Tristate.UNSET cannot be converted into a boolean");
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/UnexpectedCheckEndException.java

@@ -0,0 +1,48 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when a sequence of if checks or switch cases fail unexpectedly.
+ *
+ * @since v1-alpha2
+ */
+public class UnexpectedCheckEndException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param checkOccurrence the sequence of checks that failed
+     * @since v1-alpha2
+     */
+    public UnexpectedCheckEndException(@NotNull String checkOccurrence) {
+        super("A sequence of if checks or switch cases failed unexpectedly while " + checkOccurrence);
+    }
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @since v1-alpha2
+     */
+    public UnexpectedCheckEndException() {
+        super("A sequence of if checks or switch cases failed unexpectedly");
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/dependency/DependencyCycleException.java

@@ -0,0 +1,40 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.dependency;
+
+import de.staropensource.engine.base.utility.DependencyResolver;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when the {@link DependencyResolver} detects a dependency cycle.
+ *
+ * @since v1-alpha1
+ */
+public class DependencyCycleException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param path cycle path
+     * @since v1-alpha1
+     */
+    public DependencyCycleException(@NotNull String path) {
+        super("Dependency cycle detected: " + path);
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/dependency/UnmetDependenciesException.java

@@ -0,0 +1,60 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.dependency;
+
+import de.staropensource.engine.base.type.DependencyVector;
+import de.staropensource.engine.base.utility.DependencyResolver;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * Thrown when the {@link DependencyResolver} cannot resolve one
+ * or more {@link DependencyVector}s due to unmet dependencies.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public class UnmetDependenciesException extends Exception {
+    /**
+     * Contains the unmet dependencies list supplied to the constructor.
+     *
+     * @since v1-alpha4
+     * -- GETTER --
+     * Returns the unmet dependencies list supplied to the constructor.
+     *
+     * @return unmet dependencies list
+     * @since v1-alpha4
+     */
+    private final @NotNull List<@NotNull String> unmetDependencies;
+
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @param unmetDependencies map of all unmet dependencies
+     * @see #unmetDependencies
+     * @since v1-alpha4
+     */
+    public UnmetDependenciesException(@NotNull List<@NotNull String> unmetDependencies) {
+        this.unmetDependencies = unmetDependencies;
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/dependency/package-info.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -18,10 +18,9 @@
  */
 
 /**
- * Implementations of the [Adapter] interface.
+ * Exceptions related to dependency resolving.
  *
- * @since v1-alpha10
+ * @see de.staropensource.engine.base.utility.DependencyResolver
+ * @since v1-alpha1
  */
-package de.staropensource.engine.base.implementation.logging.adapter
+package de.staropensource.engine.base.exception.dependency;
-
-import de.staropensource.engine.base.implementable.logging.Adapter

base/src/main/java/de/staropensource/engine/base/exception/package-info.java

@@ -2,7 +2,6 @@
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
  * Licensed under the GNU Affero General Public License v3
- * with an exception allowing classpath linking.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -18,12 +17,9 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package de.staropensource.engine.newsubprj
-
 /**
- * An example class.
+ * Exceptions thrown by the engine, subsystems and applications.
  *
- * @since v1-alpha10
+ * @since v1-alpha1
  */
-class Example private constructor() {
+package de.staropensource.engine.base.exception;
-}

base/src/main/java/de/staropensource/engine/base/exception/reflection/IncompatibleTypeException.java

@@ -0,0 +1,53 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.reflection;
+
+import de.staropensource.engine.base.type.reflection.ClassType;
+import de.staropensource.engine.base.utility.misc.ListFormatter;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when the invoked method does not apply to the type of the class.
+ *
+ * @since v1-alpha2
+ */
+public class IncompatibleTypeException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param methodName        name of the method that failed
+     * @param requiredClassType class type received by the method
+     * @param compatibleTypes   class types the method is compatible with
+     */
+    public IncompatibleTypeException(@NotNull String methodName, @NotNull ClassType requiredClassType, @NotNull ClassType @NotNull [] compatibleTypes) {
+        super("The method ReflectionClass#" + methodName + " only applies to type(s) " + ListFormatter.formatArray(compatibleTypes) + ", not " + requiredClassType.name());
+    }
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param methodName        name of the method that failed
+     * @param requiredClassType class type received by the method
+     * @param compatibleType    class type the method is compatible with
+     */
+    public IncompatibleTypeException(@NotNull String methodName, @NotNull ClassType requiredClassType, @NotNull ClassType compatibleType) {
+        super("The method ReflectionClass#" + methodName + " only applies to type(s) " + ListFormatter.formatArray(new ClassType[]{ compatibleType }) + ", not " + requiredClassType.name());
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/reflection/InstanceMethodFromStaticContextException.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -17,29 +17,23 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package de.staropensource.engine.base.utility.misc
+package de.staropensource.engine.base.exception.reflection;
+
+import org.jetbrains.annotations.NotNull;
 
 /**
- * REALLY miscellaneous methods are in here.
+ * Thrown when trying to call an instance (non-static) method from a static context.
  *
- * @since v1-alpha10
+ * @since v1-alpha2
  */
-class Miscellaneous private constructor() {
+public class InstanceMethodFromStaticContextException extends Exception {
     /**
-     * Companion object of [Miscellaneous].
+     * Creates and initializes an instance of this exception.
      *
-     * @since v1-alpha10
+     * @param methodName name of the method
+     * @since v1-alpha2
      */
-    companion object {
+    public InstanceMethodFromStaticContextException(@NotNull String methodName) {
-        /**
+        super("Method " + methodName + " could not be called as the method is non-static and was called from a static context");
-         * Returns if currently
-         * running on the main thread.
-         *
-         * @return `true` if running on the main thread, `false` if not, `null` if not supported (e.g. not running on the JVM)
-         * @since v1-alpha10
-         */
-        fun onMainThread(): Boolean? {
-            return Thread.currentThread().threadId() == 1L
-        }
     }
 }

base/src/main/java/de/staropensource/engine/base/exception/reflection/InvalidFieldException.java

@@ -0,0 +1,40 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.reflection;
+
+import de.staropensource.engine.base.reflection.ReflectionClass;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when a field could not be found.
+ *
+ * @since v1-alpha2
+ */
+public class InvalidFieldException extends Exception {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param clazz     caller {@link ReflectionClass}
+     * @param fieldName name of the invalid field
+     */
+    public InvalidFieldException(@NotNull ReflectionClass clazz, @NotNull String fieldName) {
+        super("Invalid field name \"" + fieldName + "\" in class " + clazz.getPath());
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/reflection/InvalidMethodException.java

@@ -0,0 +1,40 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.reflection;
+
+import de.staropensource.engine.base.reflection.ReflectionClass;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when a method could not be found.
+ *
+ * @since v1-alpha2
+ */
+public class InvalidMethodException extends Exception {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param clazz     caller {@link ReflectionClass}
+     * @param fieldName name of the invalid method
+     */
+    public InvalidMethodException(@NotNull ReflectionClass clazz, @NotNull String fieldName) {
+        super("Invalid method name \"" + fieldName + "\" in class " + clazz.getPath());
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/reflection/InvalidMethodSignatureException.java

@@ -0,0 +1,39 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.reflection;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when a method could not be found due to an invalid method signature.
+ *
+ * @since v1-alpha5
+ */
+public class InvalidMethodSignatureException extends Exception {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param methodName method name
+     * @since v1-alpha5
+     */
+    public InvalidMethodSignatureException(@NotNull String methodName) {
+        super("Method " + methodName + " has a different method signature");
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/reflection/NoAccessException.java

@@ -0,0 +1,40 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.reflection;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown if access to some class, method or field has been denied.
+ *
+ * @since v1-alpha2
+ */
+public class NoAccessException extends Exception {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param type {@code class}, {@code method} or {@code field}
+     * @param name class, method or field name
+     * @since v1-alpha2
+     */
+    public NoAccessException(@NotNull String type, @NotNull String name) {
+        super("Access to " + type + " " + name + " has been denied");
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/reflection/StaticInitializerException.java

@@ -0,0 +1,54 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.reflection;
+
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Thrown when an exception is thrown by a static initializer.
+ *
+ * @since v1-alpha2
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public class StaticInitializerException extends Exception {
+    /**
+     * Contains the throwable thrown by the static initializer.
+     *
+     * @since v1-alpha2
+     * -- GETTER --
+     * Returns the throwable thrown by the static initializer.
+     *
+     * @return throwable thrown by the static initializer
+     * @since v1-alpha2
+     */
+    private final @NotNull Throwable throwable;
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param throwable throwable thrown by the static initializer
+     * @since v1-alpha2
+     */
+    public StaticInitializerException(@NotNull Throwable throwable) {
+        this.throwable = throwable;
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/reflection/package-info.java

@@ -0,0 +1,26 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Exceptions related to reflection.
+ *
+ * @see de.staropensource.engine.base.reflection
+ * @since v1-alpha2
+ */
+package de.staropensource.engine.base.exception.reflection;

base/src/main/java/de/staropensource/engine/base/exception/versioning/IncompatibleVersioningSystemException.java

@@ -0,0 +1,41 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+
+/**
+ * Thrown when trying to compare a {@link VersioningSystem} against another
+ * {@link VersioningSystem}, which it does not support.
+ *
+ * @since v1-alpha1
+ */
+public class IncompatibleVersioningSystemException extends RuntimeException {
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param required required versioning system ie. the versioning system throwing this error
+     * @param found    found versioning system ie. the incompatible one
+     * @since v1-alpha1
+     */
+    public IncompatibleVersioningSystemException(VersioningSystem required, VersioningSystem found) {
+        super("The versioning system " + required + " is incompatible with " + found);
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/versioning/InvalidVersionStringException.java

@@ -0,0 +1,104 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.exception.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+
+/**
+ * Thrown when an invalid version string is supplied
+ * to an implementation of {@link VersioningSystem}.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public class InvalidVersionStringException extends Exception {
+    /**
+     * Contains the throwable supplied to the constructor.
+     *
+     * @see #InvalidVersionStringException(VersioningSystem, String, Throwable)
+     * @see #InvalidVersionStringException(VersioningSystem, String, String, Throwable)
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the throwable supplied by the constructor.
+     *
+     * @return throwable
+     * @see #InvalidVersionStringException(VersioningSystem, String, Throwable)
+     * @see #InvalidVersionStringException(VersioningSystem, String, String, Throwable)
+     * @since v1-alpha1
+     */
+    private final @Nullable Throwable throwable;
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param versioningSystem versioning system that is unable to parse version strings
+     * @param versionString    version string {@code a}
+     * @param message          some error message
+     * @param throwable        throwable that caused the parsing error
+     * @since v1-alpha1
+     */
+    public InvalidVersionStringException(@NotNull VersioningSystem versioningSystem, @NotNull String versionString, @NotNull String message, @NotNull Throwable throwable) {
+        super("Versioning system " + versioningSystem.getName() + " can't parse version string \"" + versionString + "\": " + message);
+        this.throwable = throwable;
+    }
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param versioningSystem versioning system that is unable to parse version strings
+     * @param versionString   version string {@code a}
+     * @param message          some error message
+     * @since v1-alpha1
+     */
+    public InvalidVersionStringException(@NotNull VersioningSystem versioningSystem, @NotNull String versionString, @NotNull String message) {
+        super("Versioning system " + versioningSystem.getName() + " can't parse version string \"" + versionString + "\": " + message);
+        throwable = null;
+    }
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param versioningSystem versioning system that is unable to parse version strings
+     * @param versionString   version string {@code a}
+     * @param throwable        throwable that caused the parsing error
+     * @since v1-alpha1
+     */
+    public InvalidVersionStringException(@NotNull VersioningSystem versioningSystem, @NotNull String versionString, @NotNull Throwable throwable) {
+        super("Versioning system " + versioningSystem.getName() + " can't parse version string \"" + versionString + "\"");
+        this.throwable = throwable;
+    }
+
+    /**
+     * Creates and initializes an instance of this exception.
+     *
+     * @param versioningSystem versioning system that is unable to parse version strings
+     * @param versionString   version string {@code a}
+     * @since v1-alpha1
+     */
+    public InvalidVersionStringException(@NotNull VersioningSystem versioningSystem, @NotNull String versionString) {
+        super("Versioning system " + versioningSystem.getName() + " can't parse version string \"" + versionString + "\"");
+        this.throwable = null;
+    }
+}

base/src/main/java/de/staropensource/engine/base/exception/versioning/package-info.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -17,11 +17,10 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package de.staropensource.engine.base.exception
-
 /**
- * Thrown when a verification fails.
+ * Exceptions thrown by implementations of {@link de.staropensource.engine.base.implementable.VersioningSystem}s.
  *
- * @since v1-alpha10
+ * @see de.staropensource.engine.base.implementable.VersioningSystem
+ * @since v1-alpha1
  */
-class VerificationFailedException(val error: String? = null, val throwable: Throwable? = null) : RuntimeException(error, throwable)
+package de.staropensource.engine.base.exception.versioning;

base/src/main/java/de/staropensource/engine/base/implementable/Configuration.java

@@ -0,0 +1,132 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.utility.PropertiesReader;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Properties;
+
+/**
+ * Interface for implementing configuration classes.
+ * <p>
+ * Configuration classes use {@link Properties} objects to modify
+ * their settings as they can be supplied to the JVM's arguments
+ * and can be written to and read from during runtime.
+ *
+ * @since v1-alpha2
+ */
+public abstract class Configuration {
+    /**
+     * Creates and initializes an instance of this abstract class.
+     *
+     * @since v1-alpha2
+     */
+    protected Configuration() {
+        // Load default configuration
+        loadDefaultConfiguration();
+    }
+
+    /**
+     * Loads all settings from the specified {@link Properties} object.
+     * Unless you want to override settings, consider invoking {@link #loadDefaultConfiguration()} first.
+     *
+     * @param properties {@link Properties} to read from
+     * @see #loadDefaultConfiguration()
+     * @since v1-alpha2
+     */
+    public void loadConfiguration(@NotNull Properties properties) {
+        PropertiesReader parser = new PropertiesReader(properties);
+
+        // Loop through all properties
+        for (String property : properties.stringPropertyNames()) {
+            // Check if property name starts with group
+            if (!property.startsWith(getGroup()))
+                continue;
+
+            // Remove group
+            property = property.substring(getGroup().length());
+
+            // Overwrite matching settings
+            try {
+                matchProperty(parser, property);
+            } catch (NullPointerException ignored) {}
+        }
+
+        processSettings(parser);
+    }
+
+    /**
+     * Loads all settings from the system properties.
+     * Useful if you want to allow the user to modify settings at startup.
+     *
+     * @see #loadConfiguration(Properties)
+     * @see System#getProperties()
+     * @since v1-alpha2
+     */
+    public void loadConfiguration() {
+        loadConfiguration(System.getProperties());
+    }
+
+    /**
+     * Returns prefix properties must begin with.
+     *
+     * @return property group
+     * @since v1-alpha2
+     */
+    public abstract @NotNull String getGroup();
+
+    /**
+     * Loads the default subsystem configuration.
+     *
+     * @see #loadConfiguration()
+     * @see #loadConfiguration(Properties)
+     * @since v1-alpha0
+     */
+    public abstract void loadDefaultConfiguration();
+
+    /**
+     * Matches the given {@code property} against all settings.
+     * If a match has been found, the setting will be overwritten with the property's value.
+     *
+     * @param parser   matching {@link PropertiesReader}
+     * @param property property to match
+     * @since v1-alpha2
+     */
+    protected abstract void matchProperty(@NotNull PropertiesReader parser, @NotNull String property);
+
+    /**
+     * Allows the implementor to process all settings and potentially
+     * modify them before {@link #loadConfiguration(Properties)} returns.
+     *
+     * @param parser matching {@link PropertiesReader}
+     * @since v1-alpha2
+     */
+    protected abstract void processSettings(@NotNull PropertiesReader parser);
+
+    /**
+     * Returns a configuration setting.
+     *
+     * @param setting setting name
+     * @return setting's value or {@code null} if not found
+     */
+    public abstract @Nullable Object getSetting(@NotNull String setting);
+}

base/src/main/java/de/staropensource/engine/base/implementable/Event.java

@@ -0,0 +1,110 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.annotation.EventListener;
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+
+/**
+ * Represents an event.
+ *
+ * @see EventHelper
+ * @since v1-alpha0
+ */
+public interface Event {
+    /**
+     * Emits the event and calls all event listeners.
+     *
+     * @since v1-alpha0
+     */
+    void callEvent();
+
+    /**
+     * Specifies in which order {@link EventListener}s shall be called.
+     *
+     * @since v1-alpha9
+     */
+    @SuppressWarnings({ "unused" })
+    enum Priority {
+        /**
+         * {@link EventListener}s with this
+         * priority are called before all others.
+         * <p>
+         * This priority is exclusive to the
+         * engine and subsystems and should
+         * not be used by applications.
+         *
+         * @since v1-alpha9
+         */
+        EXCLUSIVELY_IMPORTANT,
+
+        /**
+         * {@link EventListener}s with
+         * this priority are called 2nd.
+         *
+         * @since v1-alpha9
+         */
+        VERY_IMPORTANT,
+
+        /**
+         * {@link EventListener}s with
+         * this priority are called 3rd.
+         *
+         * @since v1-alpha9
+         */
+        IMPORTANT,
+
+        /**
+         * {@link EventListener}s with
+         * this priority are called 4th.
+         *
+         * @since v1-alpha9
+         */
+        DEFAULT,
+
+        /**
+         * {@link EventListener}s with
+         * this priority are called 5th.
+         *
+         * @since v1-alpha9
+         */
+        UNIMPORTANT,
+
+        /**
+         * {@link EventListener}s with
+         * this priority are called 6th.
+         *
+         * @since v1-alpha9
+         */
+        VERY_UNIMPORTANT,
+
+        /**
+         * {@link EventListener}s with this
+         * priority are called after all others.
+         * <p>
+         * This priority is exclusive to the
+         * engine and subsystems and should
+         * not be used by applications.
+         *
+         * @since v1-alpha9
+         */
+        EXCLUSIVELY_UNIMPORTANT
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementable/EventListenerCode.java

@@ -0,0 +1,58 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.implementable.helper.EventHelper;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Used by {@link EventHelper} to execute event listeners.
+ *
+ * @see Runnable
+ * @since v1-alpha5
+ */
+public abstract class EventListenerCode {
+    /**
+     * Contains the priority of this
+     * event listener.
+     * <p>
+     * Set automatically by {@link EventHelper},
+     * do not change this manually.
+     *
+     * @since v1-alpha5
+     */
+    public @NotNull Event.Priority priority = Event.Priority.DEFAULT;
+
+    /**
+     * Creates and initializes an instance of this abstract class.
+     *
+     * @since v1-alpha5
+     */
+    protected EventListenerCode() {}
+
+    /**
+     * Invokes the event listener.
+     *
+     * @param arguments arguments passed along by the event
+     * @throws Exception exceptions thrown
+     * @since v1-alpha5
+     */
+    public abstract void run(Object... arguments) throws Exception;
+}

base/src/main/java/de/staropensource/engine/base/implementable/LoggingAdapter.java

@@ -0,0 +1,43 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface for implementing custom logger implementations.
+ *
+ * @see Logger#setLoggingAdapter(LoggingAdapter)
+ * @since v1-alpha0
+ */
+public interface LoggingAdapter {
+    /**
+     * Prints a log message.
+     *
+     * @param level   level of the log call
+     * @param issuer  {@link StackTraceElement} of the issuer
+     * @param message raw message
+     * @param format  processed log call output (print this!)
+     * @since v1-alpha2
+     */
+    void print(@NotNull LogLevel level, @NotNull StackTraceElement issuer, @NotNull String message, @NotNull String format);
+}

base/src/main/java/de/staropensource/engine/base/implementable/Placeholder.java

@@ -0,0 +1,40 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.utility.PlaceholderEngine;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface for implementing placeholders.
+ *
+ * @see PlaceholderEngine
+ * @since v1-alpha0
+ */
+public interface Placeholder {
+    /**
+     * Replaces the placeholder with content.
+     *
+     * @param text text to process
+     * @return processed text
+     * @since v1-alpha2
+     */
+    @NotNull String replace(@NotNull String text);
+}

base/src/main/java/de/staropensource/engine/base/implementable/ShortcodeParser.java

@@ -0,0 +1,218 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.EngineConfiguration;
+import de.staropensource.engine.base.exception.ParserException;
+import de.staropensource.engine.base.logging.Logger;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.LinkedList;
+import java.util.Locale;
+
+/**
+ * Base class for implementing a shortcode parser.
+ * <p>
+ * This class parses a string and converts it into a list of
+ * components, which can then be in turn be converted to something
+ * else, for example, ANSI escape codes.
+ * <p>
+ * The following shortcodes are available and can be used:
+ * <ul>
+ *     <li>reset</li>
+ *     <li>fg:[black,red,green,yellow,blue,magenta,cyan,white]</li>
+ *     <li>bg:[black,red,green,yellow,blue,magenta,cyan,white]</li>
+ *     <li>bold</li>
+ *     <li>italic</li>
+ *     <li>strikethrough</li>
+ *     <li>underline</li>
+ * </ul>
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public abstract class ShortcodeParser {
+    /**
+     * Contains a list of components the parsed text is made out of.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns a list of components the parsed text is made out of.
+     *
+     * @return component list
+     * @since v1-alpha1
+     */
+    protected final @NotNull LinkedList<String> components;
+
+    /**
+     * Creates and initializes an instance of this abstract class.
+     *
+     * @param string               string to parse
+     * @param ignoreInvalidEscapes if {@code true}, will ignore and treat invalid escapes as text
+     * @throws ParserException on error
+     * @since v1-alpha2
+     */
+    protected ShortcodeParser(@NotNull String string, boolean ignoreInvalidEscapes) throws ParserException {
+        components = parse(string, ignoreInvalidEscapes);
+    }
+
+    /**
+     * Parses the input string and returns a list
+     * of components the text is made out of.
+     *
+     * @param string               string to parse
+     * @param ignoreInvalidEscapes if {@code true}, will ignore and treat invalid escapes as text
+     * @return list of components
+     * @throws ParserException on error
+     * @see EngineConfiguration#errorShortcodeParser
+     * @since v1-alpha2
+     */
+    protected @NotNull LinkedList<@NotNull String> parse(@NotNull String string, boolean ignoreInvalidEscapes) throws ParserException {
+        LinkedList<String> components = new LinkedList<>();  // List of components
+        boolean tagActive = false;                           // Indicates that a tag is being parsed
+        boolean escape = false;                              // Indicates whether the last character was a \ character
+        StringBuilder part = new StringBuilder();            // Temporary string. May be a tag, may be regular text
+
+        // Iterate through every character
+        for (char character : string.toCharArray()) {
+            // Escaping
+            if (escape) {
+                if (character == '\\' || character == '<')
+                    part.append(character);
+                else if (!(character == 'r' || character == 'n'))
+                    if (ignoreInvalidEscapes)
+                        part.append("\\").append(character);
+                    else
+                        throw new ParserException("Invalid escape \\" + character);
+
+                escape = false;
+                continue;
+            }
+            if (character == '\\') {
+                escape = true;
+                continue;
+            }
+
+            if (tagActive) {
+                // A tag is being parsed
+                if (character == '>') {
+                    // Tag is ending, disable tag parsing
+                    tagActive = false;
+
+                    // fg:*
+                    if (part.toString().startsWith("fg:"))
+                        if (isValidColor(part.substring(3).toUpperCase()))
+                            components.add("COLOR:FOREGROUND:" + part.substring(3).toUpperCase());
+                        else {
+                            // Complain about invalid shortcode
+                            if (EngineConfiguration.getInstance() != null && EngineConfiguration.getInstance().isErrorShortcodeParser())
+                                Logger.sarn("Invalid shortcode: " + part);
+
+                            // Convert tag regular text
+                            components.add("TEXT:" + "<" + part + ">");
+                        }
+                    // bg:*
+                    else if (part.toString().startsWith("bg:"))
+                        if (isValidColor(part.substring(3).toUpperCase()))
+                            components.add("COLOR:BACKGROUND:" + part.substring(3).toUpperCase());
+                        else {
+                            // Complain about invalid shortcode
+                            if (EngineConfiguration.getInstance() != null && EngineConfiguration.getInstance().isErrorShortcodeParser())
+                                Logger.sarn("Invalid shortcode: " + part);
+
+                            // Convert tag regular text
+                            components.add("TEXT:" + "<" + part + ">");
+                        }
+                    // bold
+                    else if (part.toString().equals("bold"))
+                        components.add("ATTRIBUTE:BOLD");
+                    // italic
+                    else if (part.toString().equals("italic"))
+                        components.add("ATTRIBUTE:ITALIC");
+                    // strikethrough
+                    else if (part.toString().equals("strikethrough"))
+                        components.add("ATTRIBUTE:STRIKETHROUGH");
+                    // underline
+                    else if (part.toString().equals("underline"))
+                        components.add("ATTRIBUTE:UNDERLINE");
+                    // blink
+                    else if (part.toString().equals("blink"))
+                        components.add("ATTRIBUTE:BLINK");
+                    // reset
+                    else if (part.toString().equals("reset"))
+                        components.add("RESET");
+
+                    // error case
+                    else {
+                        // Complain about invalid shortcode
+                        if (EngineConfiguration.getInstance() != null && EngineConfiguration.getInstance().isErrorShortcodeParser())
+                            Logger.sarn("Invalid shortcode: " + part);
+
+                        // Convert tag regular text
+                        components.add("TEXT:" + "<" + part + ">");
+                    }
+
+                    // Empty 'part'
+                    part = new StringBuilder();
+                } else
+                    // Tag has not ended yet, add character to 'part'
+                    // It bloats the code to do it with StringBuilder
+                    part.append(character);
+            } else {
+                // Regular text is being parsed
+                if (character == '<') {
+                    if (!part.isEmpty()) {
+                        // Tag is starting, insert previous text
+                        components.add("TEXT:" + part);
+                        part = new StringBuilder();
+                    }
+
+                    tagActive = true;  // Enable tag processing
+                } else
+                    // Regular text, add character to 'part'
+                    // It bloats the code to do it with StringBuilder
+                    part.append(character);
+            }
+        }
+
+        // Processing ended, insert leftover text
+        if (!part.isEmpty())
+            components.add("TEXT:" + part);
+
+        return components;
+    }
+
+    /**
+     * Returns if the specified color is valid
+     *
+     * @return {@code true} if valid, {@code false} otherwise
+     * @since v1-alpha2
+     */
+    private boolean isValidColor(@NotNull String color) {
+        return switch (color.toLowerCase(Locale.ROOT)) {
+            case "black", "white", "red",
+                 "green", "blue", "yellow",
+                 "magenta", "cyan" -> true;
+            default -> false;
+        };
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementable/ShutdownHandler.java

@@ -0,0 +1,42 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.Engine;
+import org.jetbrains.annotations.Range;
+
+/**
+ * Interface for custom shutdown handlers.
+ * <p>
+ * Shutdown handlers are responsible for shutting down
+ * the platform safely after the engine has shut down.
+ *
+ * @see Engine#setShutdownHandler(ShutdownHandler)
+ * @since v1-alpha2
+ */
+public interface ShutdownHandler {
+    /**
+     * Executes the shutdown handler.
+     *
+     * @param exitCode exit code
+     * @since v1-alpha2
+     */
+    void shutdown(@Range(from = 0, to = 255) short exitCode);
+}

base/src/main/java/de/staropensource/engine/base/implementable/SubsystemClass.java

@@ -0,0 +1,79 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.Engine;
+import de.staropensource.engine.base.annotation.EngineSubsystem;
+import de.staropensource.engine.base.annotation.EventListener;
+import de.staropensource.engine.base.event.InternalEngineShutdownEvent;
+import de.staropensource.engine.base.type.DependencyVector;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Abstract class for building subsystem main classes.
+ *
+ * @see EngineSubsystem
+ * @since v1-alpha0
+ */
+public abstract class SubsystemClass {
+    /**
+     * Creates and initializes an instance of this abstract class.
+     *
+     * @since v1-alpha2
+     */
+    protected SubsystemClass() {}
+
+    /**
+     * Returns the name of the subsystem.
+     *
+     * @return subsystem name
+     * @since v1-alpha2
+     */
+    public abstract @NotNull String getName();
+
+    /**
+     * Initializes the subsystem.
+     *
+     * @since v1-alpha1
+     */
+    public abstract void initializeSubsystem();
+
+    /**
+     * Returns a matching {@link DependencyVector}.
+     * Used for dependency resolution during startup.
+     *
+     * @return matching {@link DependencyVector} for the subsystem
+     * @throws IllegalStateException when building the DependencyVector fails, see {@link DependencyVector.Builder#build()}
+     * @see DependencyVector
+     * @since v1-alpha4
+     */
+    public abstract @NotNull DependencyVector getDependencyVector() throws IllegalStateException;
+
+    /**
+     * Called on engine shutdown.
+     *
+     * @see Engine#shutdown()
+     * @see Engine#shutdown(int)
+     * @since v1-alpha0
+     */
+    @EventListener(event = InternalEngineShutdownEvent.class)
+    @SuppressWarnings({ "unused" })
+    protected static void shutdownSubsystem() {}
+}

base/src/main/java/de/staropensource/engine/base/implementable/VersioningSystem.java

@@ -0,0 +1,59 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable;
+
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Range;
+
+/**
+ * Interface for building a versioning system (parser).
+ *
+ * @since v1-alpha1
+ */
+public interface VersioningSystem {
+    /**
+     * Returns the name of the versioning system.
+     *
+     * @return versioning system name
+     * @since v1-alpha1
+     */
+    @NotNull String getName();
+
+    /**
+     * Compares a {@link VersioningSystem} with another.
+     *
+     * @param version {@link VersioningSystem} to compare against
+     * @return {@code 0} if the supplied version is bigger, {@code 1} if equal and {@code 2} if smaller
+     * @throws IncompatibleVersioningSystemException incompatible with the supplied versioning system
+     * @since v1-alpha1
+     */
+    @Range(from = 0, to = 2)
+    int compare(@NotNull VersioningSystem version) throws IncompatibleVersioningSystemException;
+
+    /**
+     * Returns the version string.
+     *
+     * @return version string
+     * @since v1-alpha9
+     */
+    @Override
+    @NotNull String toString();
+}

base/src/main/java/de/staropensource/engine/base/implementable/helper/EventHelper.java

@@ -0,0 +1,256 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementable.helper;
+
+import de.staropensource.engine.base.EngineConfiguration;
+import de.staropensource.engine.base.EngineInternals;
+import de.staropensource.engine.base.annotation.EventListener;
+import de.staropensource.engine.base.event.LogEvent;
+import de.staropensource.engine.base.exception.reflection.InstanceMethodFromStaticContextException;
+import de.staropensource.engine.base.exception.reflection.InvalidMethodSignatureException;
+import de.staropensource.engine.base.exception.reflection.NoAccessException;
+import de.staropensource.engine.base.exception.reflection.StaticInitializerException;
+import de.staropensource.engine.base.implementable.Event;
+import de.staropensource.engine.base.implementable.EventListenerCode;
+import de.staropensource.engine.base.internal.implementation.EventListenerMethod;
+
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.utility.misc.ListFormatter;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.reflections.Reflections;
+import org.reflections.scanners.Scanners;
+import org.reflections.util.ClasspathHelper;
+import org.reflections.util.ConfigurationBuilder;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.*;
+
+/**
+ * Simplifies event logging and calling.
+ *
+ * @since v1-alpha0
+ */
+@Getter
+public final class EventHelper {
+    /**
+     * Holds all cached events.
+     *
+     * @since v1-alpha5
+     */
+    private static final @NotNull Map<@NotNull Class<? extends Event>, LinkedList<@NotNull EventListenerCode>> cachedEventListeners = new HashMap<>();
+
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha0
+     */
+    private EventHelper() {}
+
+    /**
+     * Registers a new {@link Event}.
+     * <p>
+     * This method does nothing if classpath searching is disabled.
+     *
+     * @param event         {@link Event} to register for
+     * @param eventListener {@link EventListenerCode} to register
+     * @param priority      priority of the listener
+     * @see EngineInternals#getReflectiveClasspathScanning()
+     * @since v1-alpha5
+     */
+    public static synchronized void registerEvent(@NotNull Class<? extends Event> event, @NotNull EventListenerCode eventListener, @NotNull Event.Priority priority) {
+        if (EngineInternals.getInstance().getReflectiveClasspathScanning())
+            return;
+
+        // Update 'eventListener' priority
+        eventListener.priority = priority;
+
+        // Check if event already exists in map
+        // If not, create entry with a LinkedList
+        if (cachedEventListeners.containsKey(event))
+            if (cachedEventListeners.get(event).contains(eventListener))
+                return;
+            else
+                cachedEventListeners.get(event).add(eventListener);
+        else {
+            LinkedList<@NotNull EventListenerCode> list = new LinkedList<>();
+            list.add(eventListener);
+            cachedEventListeners.put(event, list);
+        }
+
+        Logger.diag("Registered event listener " + eventListener + " for event " + event + " with priority " + priority.name());
+    }
+
+    /**
+     * Registers a new {@link Event}.
+     * <p>
+     * This method does nothing if classpath searching is disabled.
+     *
+     * @param event         {@link Event} to register for
+     * @param eventListener {@link EventListenerCode} to register
+     * @see EngineInternals#getReflectiveClasspathScanning()
+     * @since v1-alpha5
+     */
+    public static void registerEvent(@NotNull Class<? extends Event> event, @NotNull EventListenerCode eventListener) {
+        registerEvent(event, eventListener, Event.Priority.DEFAULT);
+    }
+
+    /**
+     * (Re-)Caches all event listeners for some {@link Event}.
+     * <p>
+     * This method does nothing if classpath searching is enabled.
+     *
+     * @param event event to (re-)cache. Set to {@code null} to recompute all cached events
+     * @see EngineInternals#getReflectiveClasspathScanning()
+     * @since v1-alpha5
+     */
+    public static synchronized void cacheEvent(@Nullable Class<? extends Event> event) {
+        if (!EngineInternals.getInstance().getReflectiveClasspathScanning())
+            return;
+
+        if (event == null)
+            for (Class<? extends Event> cachedEvent : cachedEventListeners.keySet())
+                cacheEvent(cachedEvent);
+        else {
+            LinkedList<@NotNull EventListenerCode> annotatedMethods = getAnnotatedMethods(event);
+
+            if (cachedEventListeners.containsKey(event))
+                cachedEventListeners.replace(event, annotatedMethods);
+            else
+                cachedEventListeners.put(event, annotatedMethods);
+        }
+    }
+
+    /**
+     * Removes an event from the event listener cache.
+     * <p>
+     * This method does nothing if classpath searching is enabled.
+     *
+     * @param event event to uncache. Set to {@code null} to clear the entire cache
+     * @see EngineInternals#getReflectiveClasspathScanning()
+     * @since v1-alpha5
+     */
+    public static synchronized void uncacheEvent(@Nullable Class<? extends Event> event) {
+        if (!EngineInternals.getInstance().getReflectiveClasspathScanning())
+            return;
+
+        if (event == null)
+            cachedEventListeners.clear();
+        else
+            cachedEventListeners.remove(event);
+    }
+
+    /**
+     * Invokes all event listeners.
+     *
+     * @param event event class
+     * @param arguments arguments to pass to event listeners
+     * @since v1-alpha5
+     */
+    public static void invokeAnnotatedMethods(@NotNull Class<? extends Event> event, Object... arguments) {
+        if (event != LogEvent.class && EngineConfiguration.getInstance().isDebugEvents())
+            if (arguments.length == 0)
+                Logger.diag("Event " + event.getName() + " was emitted");
+            else
+                Logger.diag("Event " + event.getName() + " was emitted, passing arguments " + ListFormatter.formatArray(arguments));
+
+        Runnable eventCode = () -> {
+            for (EventListenerCode eventListener : getAnnotatedMethods(event)) {
+                try {
+                    eventListener.run(arguments);
+                } catch (NoAccessException exception) {
+                    Logger.warn("Event listener " + eventListener + " could not be called as the method could not be accessed");
+                } catch (InvalidMethodSignatureException exception) {
+                    Logger.warn("Event listener " + eventListener + " has an invalid method signature");
+                } catch (InvocationTargetException exception) {
+                    Logger.crash("Event listener " + eventListener + " threw a throwable", exception.getTargetException(), true);
+                } catch (InstanceMethodFromStaticContextException exception) {
+                    Logger.warn("Event listener " + eventListener + " is not static. Event listener methods must be static for them to be called.");
+                } catch (StaticInitializerException exception) {
+                    Logger.crash("Event listener " + eventListener + " could not be called as the static initializer failed", exception.getThrowable(), true);
+                } catch (Exception exception) {
+                    Logger.crash("Event listener " + eventListener + " could not be called as an error occurred during reflection", exception, true);
+                }
+            }
+        };
+
+        if (EngineConfiguration.getInstance().isOptimizeEvents())
+            Thread
+                    .ofVirtual()
+                    .name("Event " + event.getName())
+                    .start(eventCode);
+        else
+            eventCode.run();
+    }
+
+    /**
+     * Returns all {@link EventListener}s listening on some event.
+     * The classpath will be scanned for listeners, unless cached results exist and {@code !forceScanning}.
+     *
+     * @param event         event class
+     * @param forceScanning forces scanning the classpath for listeners. not recommended due to a huge performance penalty
+     * @return list of event listeners
+     * @see #cacheEvent(Class)
+     * @since v1-alpha5
+     */
+    public static @NotNull LinkedList<EventListenerCode> getAnnotatedMethods(@NotNull Class<? extends Event> event, boolean forceScanning) {
+        LinkedList<EventListenerCode> eventListeners = new LinkedList<>();
+
+        if (!EngineInternals.getInstance().getReflectiveClasspathScanning())
+            return Objects.requireNonNullElse(cachedEventListeners.get(event), eventListeners);
+
+        if (forceScanning || !cachedEventListeners.containsKey(event)) {
+            Reflections reflections = new Reflections(
+                    new ConfigurationBuilder()
+                            .setUrls(ClasspathHelper.forJavaClassPath())
+                            .setScanners(Scanners.MethodsAnnotated)
+            );
+
+            // Get annotated methods
+            Set<@NotNull Method> annotatedMethods = reflections.getMethodsAnnotatedWith(EventListener.class);
+
+            // Sort event listeners not listening for the specified event out
+            for (Method method : annotatedMethods)
+                if (method.getAnnotation(EventListener.class).event() == event)
+                    eventListeners.add(new EventListenerMethod(method));
+
+            // Sort list after event priority
+            eventListeners.sort(Comparator.comparing(method -> Objects.requireNonNull(((EventListenerMethod) method).getAnnotation(EventListener.class)).priority()));
+        } else
+            // Event listeners are cached and !forceScanning, return cached results
+            eventListeners = cachedEventListeners.get(event);
+
+        return eventListeners;
+    }
+
+    /**
+     * Returns all {@link EventListener}s listening on some event.
+     * The classpath will be scanned for listeners, unless cached results exist.
+     *
+     * @param event event class
+     * @return list of event listeners
+     * @since v1-alpha5
+     */
+    public static @NotNull LinkedList<EventListenerCode> getAnnotatedMethods(@NotNull Class<? extends Event> event) {
+        return getAnnotatedMethods(event, false);
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementable/helper/package-info.java

@@ -0,0 +1,26 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Not necessarily interfaces or extendable classes. Rather, they
+ * support implementing classes by providing useful or complex code.
+ *
+ * @since v1-alpha0
+ */
+package de.staropensource.engine.base.implementable.helper;

base/src/main/java/de/staropensource/engine/base/implementable/package-info.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -18,8 +18,8 @@
  */
 
 /**
- * Interfaces and abstract classes.
+ * Interfaces and abstract classes which can be used for implementing classes.
  *
- * @since v1-alpha10
+ * @since v1-alpha0
  */
 package de.staropensource.engine.base.implementable;

base/src/main/java/de/staropensource/engine/base/implementation/logging/PlainLoggingAdapter.java

@@ -0,0 +1,56 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.logging;
+
+import de.staropensource.engine.base.EngineConfiguration;
+import de.staropensource.engine.base.implementable.LoggingAdapter;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import de.staropensource.engine.base.implementation.shortcode.EmptyShortcodeParser;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Prints log messages to the console, without any fancy colors or formatting.
+ *
+ * @see Logger
+ * @see LoggingAdapter
+ * @since v1-alpha1
+ */
+public class PlainLoggingAdapter implements LoggingAdapter {
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha1
+     */
+    public PlainLoggingAdapter() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void print(@NotNull LogLevel level, @NotNull StackTraceElement issuer, @NotNull String message, @NotNull String format) {
+        format = new EmptyShortcodeParser(format, true).getClean();
+        if (level == LogLevel.ERROR || level == LogLevel.CRASH)
+            if (EngineConfiguration.getInstance() != null && EngineConfiguration.getInstance().isLogForceStandardOutput())
+                System.out.println(format);
+            else
+                System.err.println(format);
+        else
+            System.out.println(format);
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/logging/QuietLoggingAdapter.java

@@ -0,0 +1,44 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.logging;
+
+import de.staropensource.engine.base.implementable.LoggingAdapter;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * An implementation of {@link LoggingAdapter}, which does nothing.
+ * Useful if you want to silence engine startup messages.
+ *
+ * @since v1-alpha4
+ */
+public class QuietLoggingAdapter implements LoggingAdapter {
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha4
+     */
+    public QuietLoggingAdapter() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void print(@NotNull LogLevel level, @NotNull StackTraceElement issuer, @NotNull String message, @NotNull String format) {}
+}

base/src/main/java/de/staropensource/engine/base/implementation/logging/RawLoggingAdapter.java

@@ -0,0 +1,56 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.logging;
+
+import de.staropensource.engine.base.EngineConfiguration;
+import de.staropensource.engine.base.implementable.LoggingAdapter;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.type.logging.LogLevel;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Prints log messages to the console, without performing any message changes.
+ * Will reveal shortcodes as they will not be replaced.
+ *
+ * @see Logger
+ * @see LoggingAdapter
+ * @since v1-alpha1
+ */
+public class RawLoggingAdapter implements LoggingAdapter {
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha1
+     */
+    public RawLoggingAdapter() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void print(@NotNull LogLevel level, @NotNull StackTraceElement issuer, @NotNull String message, @NotNull String format) {
+        if (level == LogLevel.ERROR || level == LogLevel.CRASH)
+            if (EngineConfiguration.getInstance().isLogForceStandardOutput())
+                System.out.println(format);
+            else
+                System.err.println(format);
+        else
+            System.out.println(format);
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/logging/package-info.java

@@ -0,0 +1,25 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * A set of built-in {@link de.staropensource.engine.base.implementable.LoggingAdapter}s.
+ *
+ * @since v1-alpha1
+ */
+package de.staropensource.engine.base.implementation.logging;

base/src/main/java/de/staropensource/engine/base/implementation/package-info.java

@@ -1,10 +1,10 @@
 /*
  * STAROPENSOURCE ENGINE SOURCE FILE
  * Copyright (c) 2024 The StarOpenSource Engine Authors
- * Licensed under the GNU General Public License v3.
+ * Licensed under the GNU Affero General Public License v3
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
+ * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
@@ -18,9 +18,8 @@
  */
 
 /**
- * Implementations of various
+ * Implementations for various interfaces and abstract classes.
- * interfaces and abstract classes.
  *
- * @since v1-alpha10
+ * @since v1-alpha6
  */
 package de.staropensource.engine.base.implementation;

base/src/main/java/de/staropensource/engine/base/implementation/shortcode/EmptyShortcodeParser.java

@@ -0,0 +1,60 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.shortcode;
+
+import de.staropensource.engine.base.implementable.ShortcodeParser;
+import de.staropensource.engine.base.exception.ParserException;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Cleans the string of any tags.
+ *
+ * @see ShortcodeParser
+ * @since v1-alpha8
+ */
+public final class EmptyShortcodeParser extends ShortcodeParser {
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @param string               string to parse
+     * @param ignoreInvalidEscapes if {@code true}, will ignore and treat invalid escapes as text
+     * @throws ParserException on error
+     * @since v1-alpha8
+     */
+    public EmptyShortcodeParser(@NotNull String string, boolean ignoreInvalidEscapes) throws ParserException {
+        super(string, ignoreInvalidEscapes);
+    }
+
+    /**
+     * Returns the parsed string without any tags.
+     *
+     * @return cleaned input string
+     * @since v1-alpha8
+     */
+    public @NotNull String getClean() {
+        StringBuilder output = new StringBuilder();
+
+        for (String component : components)
+            if (component.startsWith("TEXT:"))
+                output.append(component.substring(5));
+
+        return output.toString();
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/shortcode/package-info.java

@@ -0,0 +1,25 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Classes which convert data.
+ *
+ * @since v1-alpha1
+ */
+package de.staropensource.engine.base.implementation.shortcode;

base/src/main/java/de/staropensource/engine/base/implementation/versioning/FourNumberVersioningSystem.java

@@ -0,0 +1,160 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import de.staropensource.engine.base.exception.versioning.InvalidVersionStringException;
+import de.staropensource.engine.base.utility.misc.StringUtil;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Range;
+
+/**
+ * Represents a four-numbered versioning system, where an application or work is versioning by four arbitrary numbers.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class FourNumberVersioningSystem implements VersioningSystem {
+    /**
+     * Contains the first number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the first number vector.
+     *
+     * @return first number vector
+     * @since v1-alpha1
+     */
+    private final int number1;
+
+    /**
+     * Contains the second number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the second number vector.
+     *
+     * @return second number vector
+     * @since v1-alpha1
+     */
+    private final int number2;
+
+    /**
+     * Contains the third number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the third number vector.
+     *
+     * @return third number vector
+     * @since v1-alpha1
+     */
+    private final int number3;
+
+    /**
+     * Contains the fourth number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the fourth number vector.
+     *
+     * @return fourth number vector
+     * @since v1-alpha1
+     */
+    private final int number4;
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "n4";
+    }
+
+    /**
+     * Tries to parse the specified version string
+     * and if successful, return a new instance.
+     *
+     * @param versionString version string to parse
+     * @throws InvalidVersionStringException if the version string is invalid
+     */
+    public FourNumberVersioningSystem(@NotNull String versionString) throws InvalidVersionStringException {
+        String[] separatorList = new String[]{ ".", "-" };
+        String separator = StringUtil.getSeparatorRequired(versionString, separatorList, 3);
+
+        // Escape separator or throw error if invalid
+        switch (separator) {
+            case "." -> separator = "\\.";
+            case null -> throw new InvalidVersionStringException(this, versionString, "No matching separator could be found. Required are either three dots ('.') or hyphens ('-')");
+            default -> {}
+        }
+
+        // Split the version string at every separator
+        String[] versionStringSplit = versionString.split(separator);
+
+        // Convert to integers
+        try {
+            this.number1 = Integer.parseUnsignedInt(versionStringSplit[0]);
+            this.number2 = Integer.parseUnsignedInt(versionStringSplit[1]);
+            this.number3 = Integer.parseUnsignedInt(versionStringSplit[2]);
+            this.number4 = Integer.parseUnsignedInt(versionStringSplit[3]);
+        } catch (NumberFormatException exception) {
+            throw new InvalidVersionStringException(this, versionString, "Failed converting one of the vectors to an integer", exception);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Range(from = 0, to = 2)
+    @Override
+    public int compare(@NotNull VersioningSystem versionInterface) throws IncompatibleVersioningSystemException {
+        if (versionInterface instanceof FourNumberVersioningSystem version) {
+            if (version.getNumber1() < number1)
+                return 0;
+            if (version.getNumber1() > number1)
+                return 2;
+
+            if (version.getNumber2() < number2)
+                return 0;
+            if (version.getNumber2() > number2)
+                return 2;
+
+            if (version.getNumber3() < number3)
+                return 0;
+            if (version.getNumber3() > number3)
+                return 2;
+
+            if (version.getNumber4() < number4)
+                return 0;
+            if (version.getNumber4() > number4)
+                return 2;
+
+            return 1;
+
+        } else
+            throw new IncompatibleVersioningSystemException(this, versionInterface);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String toString() {
+        return number1 + "." + number2 + "." + number3 + "." + number4;
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/versioning/OneNumberVersioningSystem.java

@@ -0,0 +1,91 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import de.staropensource.engine.base.exception.versioning.InvalidVersionStringException;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Range;
+
+/**
+ * Represents a one-numbered versioning system, where an application or work is versioned by one arbitrary number.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class OneNumberVersioningSystem implements VersioningSystem {
+    /**
+     * Contains the number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the number vector.
+     *
+     * @return number vector
+     * @since v1-alpha1
+     */
+    private final int number;
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "n1";
+    }
+
+    /**
+     * Tries to parse the specified version string
+     * and if successful, return a new instance.
+     *
+     * @param versionString version string to parse
+     * @throws InvalidVersionStringException if the version string is invalid
+     */
+    public OneNumberVersioningSystem(@NotNull String versionString) throws InvalidVersionStringException {
+        // Convert to integers
+        try {
+            this.number = Integer.parseUnsignedInt(versionString);
+        } catch (NumberFormatException exception) {
+            throw new InvalidVersionStringException(this, versionString, "Failed converting the version string into an integer", exception);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Range(from = 0, to = 2)
+    @Override
+    public int compare(@NotNull VersioningSystem versionInterface) throws IncompatibleVersioningSystemException {
+        if (versionInterface instanceof OneNumberVersioningSystem version) {
+            if (version.getNumber() < number)
+                return 0;
+            if (version.getNumber() > number)
+                return 2;
+
+            return 1;
+        } else
+            throw new IncompatibleVersioningSystemException(this, versionInterface);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String toString() {
+        return String.valueOf(number);
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/versioning/SemanticVersioningSystem.java

@@ -0,0 +1,229 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import de.staropensource.engine.base.exception.versioning.InvalidVersionStringException;
+import de.staropensource.engine.base.utility.misc.StringUtil;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.Range;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Represents the semantic versioning system (version 2.0.0), where an application
+ * or work is versioning by a {@code MAJOR} version, {@code MINOR} version,
+ * {@code PATCH} version and optionally, a pre-release vector and a build number.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class SemanticVersioningSystem implements VersioningSystem {
+    /**
+     * Contains the {@code MAJOR} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code MAJOR} vector.
+     *
+     * @return {@code MAJOR} vector
+     * @since v1-alpha1
+     */
+    private final int major;
+
+    /**
+     * Contains the {@code MINOR} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code MINOR} vector.
+     *
+     * @return {@code MINOR} vector
+     * @since v1-alpha1
+     */
+    private final int minor;
+
+    /**
+     * Contains the {@code PATCH} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code PATCH} vector.
+     *
+     * @return {@code PATCH} vector
+     * @since v1-alpha1
+     */
+    private final int patch;
+
+    /**
+     * Contains the {@code PRERELEASE} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code PRERELEASE} vector.
+     *
+     * @return {@code PRERELEASE} vector
+     * @since v1-alpha1
+     */
+    private final @Nullable String prerelease;
+
+    /**
+     * Contains the {@code BUILD} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code BUILD} vector.
+     *
+     * @return {@code BUILD} vector
+     * @since v1-alpha1
+     */
+    private final int build;
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "Semantic";
+    }
+
+    /**
+     * Tries to parse the specified version string
+     * and if successful, return a new instance.
+     *
+     * @param versionString version string to parse
+     * @throws InvalidVersionStringException if the version string is invalid
+     */
+    public SemanticVersioningSystem(@NotNull String versionString) throws InvalidVersionStringException {
+        String[] separatorList = new String[]{ "." };
+        String separator = StringUtil.getSeparatorRequired(versionString, separatorList, 2);
+
+        // Escape separator or throw error if invalid
+        switch (separator) {
+            case "." -> separator = "\\.";
+            case null -> throw new InvalidVersionStringException(this, versionString, "No matching separator could be found. Required are two dots ('.')");
+            default -> {}
+        }
+
+        // Split the version string at every separator
+        List<String> versionStringSplit = new ArrayList<>(Arrays.stream(versionString.split(separator)).toList());
+
+        // Get pre-release and build vectors
+        String build = null;
+        String prerelease = null;
+        if (versionStringSplit.get(2).contains("+")) {  // Build vector
+            int position = versionStringSplit.get(2).indexOf("+");
+            build = versionStringSplit.get(2).substring(position + 1);
+            versionStringSplit.set(2, versionStringSplit.get(2).substring(0, position));
+        }
+        if (versionStringSplit.get(2).contains("-")) {
+            int position = versionStringSplit.get(2).indexOf("-");
+            prerelease = versionStringSplit.get(2).substring(position + 1);
+            versionStringSplit.set(2, versionStringSplit.get(2).substring(0, position));
+        }
+
+        // Convert to integers
+        try {
+            this.major = Integer.parseUnsignedInt(versionStringSplit.get(0));
+            this.minor = Integer.parseUnsignedInt(versionStringSplit.get(1));
+            this.patch = Integer.parseUnsignedInt(versionStringSplit.get(2));
+            this.prerelease = prerelease;
+            if (build == null)
+                this.build = 0;
+            else
+                this.build = Integer.parseUnsignedInt(build);
+        } catch (NumberFormatException exception) {
+            throw new InvalidVersionStringException(this, versionString, "Failed converting one of the vectors to an integer", exception);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Range(from = 0, to = 2)
+    @Override
+    public int compare(@NotNull VersioningSystem versionInterface) throws IncompatibleVersioningSystemException {
+        if (versionInterface instanceof SemanticVersioningSystem version) {
+            if (version.getMajor() < major)
+                return 0;
+            if (version.getMajor() > major)
+                return 2;
+
+            if (version.getMinor() < minor)
+                return 0;
+            if (version.getMinor() > minor)
+                return 2;
+
+            if (version.getPatch() < patch)
+                return 0;
+            if (version.getPatch() > patch)
+                return 2;
+
+            if (version.getPrerelease() == null && prerelease != null)
+                return 2;
+            else if (version.getPrerelease() != null && prerelease == null)
+                return 0;
+            else if (version.getPrerelease() != null)
+                switch (prerelease) {
+                    case "alpha" -> {
+                        switch (version.getPrerelease()) {
+                            case "beta", "releasecandidate", "release-candidate", "rc" -> {
+                                return 2;
+                            }
+                        }
+                    }
+                    case "beta" -> {
+                        switch (version.getPrerelease()) {
+                            case "alpha" -> {
+                                return 0;
+                            }
+                            case "releasecandidate", "release-candidate", "rc" -> {
+                                return 2;
+                            }
+                        }
+                    }
+                    case "releasecandidate", "release-candidate", "rc" -> {
+                        switch (version.getPrerelease()) {
+                            case "alpha", "beta" -> {
+                                return 0;
+                            }
+                        }
+                    }
+                }
+
+            if (version.getBuild() < build)
+                return 0;
+            if (version.getBuild() > build)
+                return 2;
+
+            return 1;
+
+        } else
+            throw new IncompatibleVersioningSystemException(this, versionInterface);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String toString() {
+        return major + "." + minor + "." + patch + (prerelease == null ? "" : "-" + prerelease) + (build == 0 ? "" : "+" + build);
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/versioning/StarOpenSourceVersioningSystem.java

@@ -0,0 +1,272 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import de.staropensource.engine.base.exception.versioning.InvalidVersionStringException;
+import de.staropensource.engine.base.type.VersionType;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.Range;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * Represents the StarOpenSource versioning
+ * system version two, where an application
+ * or work is versioning by the {@code RELEASE},
+ * {@code TYPE}, {@code TYPERELEASE} and
+ * optionally, the {@code FORK} and
+ * {@code COMPANION} vectors.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class StarOpenSourceVersioningSystem implements VersioningSystem {
+    /**
+     * Contains the {@code RELEASE} vector.
+     *
+     * @since v1-alpha9
+     * -- GETTER --
+     * Returns the {@code RELEASE} vector.
+     *
+     * @return {@code RELEASE} vector
+     * @since v1-alpha9
+     */
+    private final int release;
+
+    /**
+     * Contains the {@code TYPE} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code TYPE} vector.
+     *
+     * @return {@code TYPE} vector
+     * @since v1-alpha1
+     */
+    private final VersionType type;
+
+    /**
+     * Contains the {@code TYPERELEASE} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code TYPERELEASE}- vector.
+     *
+     * @return {@code TYPERELEASE} vector
+     * @since v1-alpha1
+     */
+    private final int typerelease;
+
+    /**
+     * Contains the {@code COMPANION} vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the {@code COMPANION} vector.
+     *
+     * @return {@code COMPANION} vector
+     * @since v1-alpha1
+     */
+    private final @Nullable String companion;
+
+    /**
+     * Contains the FORK vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the FORK vector.
+     *
+     * @return FORK vector
+     * @since v1-alpha1
+     */
+    private final String fork;
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "StarOpenSource";
+    }
+
+    /**
+     * Tries to parse the specified version string
+     * and if successful, return a new instance.
+     *
+     * @param versionString version string to parse
+     * @throws InvalidVersionStringException if the version string is invalid
+     */
+    public StarOpenSourceVersioningSystem(@NotNull String versionString) throws InvalidVersionStringException {
+        // Split the version string at every separator
+        StringBuilder charSequence = new StringBuilder();
+        /*
+         * 0 = 'v'
+         * 1 = release vector
+         * 3 = type vector
+         * 4 = typerelease vector
+         * 5 = companion vector
+         * 6 = fork vector
+         */
+        int parsingId = 0;
+        List<String> versionStringSplit = new ArrayList<>();
+        String companion = null;
+        String fork = null;
+
+        // Iterate through all characters
+        for (Character character : versionString.toCharArray()) {
+            switch (parsingId) {
+                case 0 -> {  // 'v' character
+                    if (character != 'v')
+                        throw new InvalidVersionStringException(this, versionString, "Does not start with the character 'v'");
+                    parsingId++;
+                }
+                case 1 -> {  // Version vector
+                    if (character == '-') {
+                        versionStringSplit.add(charSequence.toString());
+                        charSequence = new StringBuilder();
+                        parsingId++;
+                    } else
+                        charSequence.append(character);
+                }
+                case 2 -> {  // Type vector
+                    charSequence.append(character);
+
+                    if (charSequence.toString().equals("alpha") || charSequence.toString().equals("beta") || charSequence.toString().equals("release")) {
+                        versionStringSplit.add(charSequence.toString());
+                        charSequence = new StringBuilder();
+                        parsingId++;
+                    } else if (versionStringSplit.size() == 2 && versionStringSplit.get(1).contains("releasec") && charSequence.toString().equals("andidate")) {
+                        versionStringSplit.set(1, versionStringSplit.get(1) + charSequence);
+                        charSequence = new StringBuilder();
+                        parsingId++;
+                    }
+                }
+                case 3 -> {  // Typerelease vector
+                    if (character == '-' || character == '+') {
+                        versionStringSplit.add(charSequence.toString());
+                        charSequence = new StringBuilder();
+                        parsingId++;
+                        if (character == '+')
+                            parsingId++;
+                    } else
+                        if (character == 'c' && versionStringSplit.get(1).equals("release")) {
+                            versionStringSplit.set(1, versionStringSplit.get(1) + character);
+                            parsingId--;
+                        } else
+                            charSequence.append(character);
+                }
+                case 4 -> {  // Fork vector
+                    if (character == '+') {
+                        fork = charSequence.toString();
+                        charSequence = new StringBuilder();
+                        parsingId++;
+                    } else
+                        charSequence.append(character);
+                }
+                case 5 -> // Companion vector
+                        charSequence.append(character);
+            }
+        }
+
+        switch (parsingId) {
+            case 0, 1, 2 -> throw new InvalidVersionStringException(this, versionString, "Required vectors not found");
+            case 3 -> {
+                if (charSequence.isEmpty())
+                    throw new InvalidVersionStringException(this, versionString, "Required vectors not found");
+                else {
+                    if (versionStringSplit.size() == 2 && versionStringSplit.get(1).contains("releasec") && charSequence.toString().equals("andidate")) {
+                        versionStringSplit.set(1, versionStringSplit.get(1) + charSequence);
+                    } else
+                        versionStringSplit.add(charSequence.toString());
+                }
+            }
+            case 5 -> {
+                if (charSequence.isEmpty())
+                    throw new InvalidVersionStringException(this, versionString, "Fork vector not found");
+                else
+                    fork = charSequence.toString();
+            }
+            case 6 -> {
+                if (charSequence.isEmpty())
+                    throw new InvalidVersionStringException(this, versionString, "Companion vector not found");
+                else
+                    companion = charSequence.toString();
+            }
+        }
+
+        // Rewrite type
+        if (versionStringSplit.get(1).equals("releasecandidate"))
+            versionStringSplit.set(1, "RELEASE_CANDIDATE");
+        else
+            versionStringSplit.set(1, versionStringSplit.get(1).toUpperCase(Locale.ROOT));
+
+
+        // Update variables
+        try {
+            this.release = Integer.parseUnsignedInt(versionStringSplit.get(0));
+            this.type = VersionType.valueOf(versionStringSplit.get(1));
+            this.typerelease = Integer.parseUnsignedInt(versionStringSplit.get(2));
+            this.companion = companion;
+            this.fork = fork;
+        } catch (NumberFormatException exception) {
+            throw new InvalidVersionStringException(this, versionString, "Failed converting one of the vectors to an integer", exception);
+        }
+
+        if (this.release == 0)
+            throw new InvalidVersionStringException(this, versionString, "The version vector must start at 1");
+    }
+
+    /** {@inheritDoc} */
+    @Range(from = 0, to = 2)
+    @Override
+    public int compare(@NotNull VersioningSystem versionInterface) throws IncompatibleVersioningSystemException {
+        if (versionInterface instanceof StarOpenSourceVersioningSystem versionCompare) {
+            if (versionCompare.getRelease() < this.release)
+                return 0;
+            if (versionCompare.getRelease() > this.release)
+                return 2;
+
+            if (type.compareTo(versionCompare.getType()) > 0)
+                return 0;
+            if (type.compareTo(versionCompare.getType()) < 0)
+                return 2;
+
+            if (versionCompare.getTyperelease() < typerelease)
+                return 0;
+            if (versionCompare.getTyperelease() > typerelease)
+                return 2;
+
+            return 1;
+
+        } else
+            throw new IncompatibleVersioningSystemException(this, versionInterface);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String toString() {
+        return "v" + release + "-" + type.name().toLowerCase(Locale.ROOT) + typerelease + (fork == null ? "" : "-" + fork) + (companion == null ? "" : "+" + companion);
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/versioning/ThreeNumberVersioningSystem.java

@@ -0,0 +1,142 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import de.staropensource.engine.base.exception.versioning.InvalidVersionStringException;
+import de.staropensource.engine.base.utility.misc.StringUtil;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Range;
+
+/**
+ * Represents a three-numbered versioning system, where an application or work is versioning by three arbitrary numbers.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class ThreeNumberVersioningSystem implements VersioningSystem {
+    /**
+     * Contains the first number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the first number vector.
+     *
+     * @return first number vector
+     * @since v1-alpha1
+     */
+    private final int number1;
+
+    /**
+     * Contains the second number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the second number vector.
+     *
+     * @return second number vector
+     * @since v1-alpha1
+     */
+    private final int number2;
+
+    /**
+     * Contains the third number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the third number vector.
+     *
+     * @return third number vector
+     * @since v1-alpha1
+     */
+    private final int number3;
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "n3";
+    }
+
+    /**
+     * Tries to parse the specified version string
+     * and if successful, return a new instance.
+     *
+     * @param versionString version string to parse
+     * @throws InvalidVersionStringException if the version string is invalid
+     */
+    public ThreeNumberVersioningSystem(@NotNull String versionString) throws InvalidVersionStringException {
+        String[] separatorList = new String[]{ ".", "-" };
+        String separator = StringUtil.getSeparatorRequired(versionString, separatorList, 2);
+
+        // Escape separator or throw error if invalid
+        switch (separator) {
+            case "." -> separator = "\\.";
+            case null -> throw new InvalidVersionStringException(this, versionString, "No matching separator could be found. Required are either two dots ('.') or hyphens ('-')");
+            default -> {}
+        }
+
+        // Split the version string at every separator
+        String[] versionStringSplit = versionString.split(separator);
+
+        // Convert to integers
+        try {
+            this.number1 = Integer.parseUnsignedInt(versionStringSplit[0]);
+            this.number2 = Integer.parseUnsignedInt(versionStringSplit[1]);
+            this.number3 = Integer.parseUnsignedInt(versionStringSplit[2]);
+        } catch (NumberFormatException exception) {
+            throw new InvalidVersionStringException(this, versionString, "Failed converting one of the vectors to an integer", exception);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Range(from = 0, to = 2)
+    @Override
+    public int compare(@NotNull VersioningSystem versionInterface) throws IncompatibleVersioningSystemException {
+        if (versionInterface instanceof ThreeNumberVersioningSystem version) {
+            if (version.getNumber1() < number1)
+                return 0;
+            if (version.getNumber1() > number1)
+                return 2;
+
+            if (version.getNumber2() < number2)
+                return 0;
+            if (version.getNumber2() > number2)
+                return 2;
+
+            if (version.getNumber3() < number3)
+                return 0;
+            if (version.getNumber3() > number3)
+                return 2;
+
+            return 1;
+
+        } else
+            throw new IncompatibleVersioningSystemException(this, versionInterface);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String toString() {
+        return number1 + "." + number2 + "." + number3;
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/versioning/TwoNumberVersioningSystem.java

@@ -0,0 +1,124 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.implementation.versioning;
+
+import de.staropensource.engine.base.implementable.VersioningSystem;
+import de.staropensource.engine.base.exception.versioning.IncompatibleVersioningSystemException;
+import de.staropensource.engine.base.exception.versioning.InvalidVersionStringException;
+import de.staropensource.engine.base.utility.misc.StringUtil;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Range;
+
+/**
+ * Represents a two-numbered versioning system, where an application or work is versioning by two arbitrary numbers.
+ *
+ * @since v1-alpha1
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class TwoNumberVersioningSystem implements VersioningSystem {
+    /**
+     * Contains the first number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the first number vector.
+     *
+     * @return first number vector
+     * @since v1-alpha1
+     */
+    private final int number1;
+
+    /**
+     * Contains the second number vector.
+     *
+     * @since v1-alpha1
+     * -- GETTER --
+     * Returns the second number vector.
+     *
+     * @return second number vector
+     * @since v1-alpha1
+     */
+    private final int number2;
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String getName() {
+        return "n2";
+    }
+
+    /**
+     * Tries to parse the specified version string
+     * and if successful, return a new instance.
+     *
+     * @param versionString version string to parse
+     * @throws InvalidVersionStringException if the version string is invalid
+     */
+    public TwoNumberVersioningSystem(@NotNull String versionString) throws InvalidVersionStringException {
+        String[] separatorList = new String[]{ ".", "-" };
+        String separator = StringUtil.getSeparatorRequired(versionString, separatorList, 1);
+
+        // Escape separator or throw error if invalid
+        switch (separator) {
+            case "." -> separator = "\\.";
+            case null -> throw new InvalidVersionStringException(this, versionString, "No matching separator could be found. Required are either one dot ('.') or hyphen ('-')");
+            default -> {}
+        }
+
+        // Split the version string at every separator
+        String[] versionStringSplit = versionString.split(separator);
+
+        // Convert to integers
+        try {
+            this.number1 = Integer.parseUnsignedInt(versionStringSplit[0]);
+            this.number2 = Integer.parseUnsignedInt(versionStringSplit[1]);
+        } catch (NumberFormatException exception) {
+            throw new InvalidVersionStringException(this, versionString, "Failed converting one of the vectors to an integer", exception);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Range(from = 0, to = 2)
+    @Override
+    public int compare(@NotNull VersioningSystem versionInterface) throws IncompatibleVersioningSystemException {
+        if (versionInterface instanceof TwoNumberVersioningSystem version) {
+            if (version.getNumber1() < number1)
+                return 0;
+            if (version.getNumber1() > number1)
+                return 2;
+
+            if (version.getNumber2() < number2)
+                return 0;
+            if (version.getNumber2() > number2)
+                return 2;
+
+            return 1;
+
+        } else
+            throw new IncompatibleVersioningSystemException(this, versionInterface);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String toString() {
+        return number1 + "." + number2;
+    }
+}

base/src/main/java/de/staropensource/engine/base/implementation/versioning/package-info.java

@@ -0,0 +1,26 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Built-in versioning systems which
+ * can be used to represent versions of some work.
+ *
+ * @since v1-alpha1
+ */
+package de.staropensource.engine.base.implementation.versioning;

base/src/main/java/de/staropensource/engine/base/internal/implementation/EventListenerMethod.java

@@ -0,0 +1,83 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation;
+
+import de.staropensource.engine.base.implementable.EventListenerCode;
+import de.staropensource.engine.base.reflection.Reflect;
+import de.staropensource.engine.base.reflection.ReflectionMethod;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
+
+/**
+ * Interface specifically for executing event listener methods.
+ *
+ * @since v1-alpha5
+ */
+public final class EventListenerMethod extends EventListenerCode {
+    /**
+     * Contains the method to call and get.
+     *
+     * @since v1-alpha5
+     */
+    private final @NotNull ReflectionMethod method;
+
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @param method method to execute
+     * @since v1-alpha5
+     */
+    public EventListenerMethod(@NotNull Method method) {
+        this.method = Reflect.reflectOn(method);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void run(@Nullable Object @NotNull [] arguments) throws Exception {
+        method.invoke(arguments);
+    }
+
+    /**
+     * Forwards {@link ReflectionMethod#getAnnotation(Class)}
+     * to the internal {@link ReflectionMethod} instance.
+     *
+     * @param <T> annotation
+     * @param annotation annotation to get
+     * @return annotation or {@code null} on error
+     * @see ReflectionMethod#getAnnotation(Class)
+     * @since v1-alpha5
+     */
+    public <T extends Annotation> @Nullable T getAnnotation(@NotNull Class<T> annotation) {
+        try {
+            return method.getAnnotation(annotation);
+        } catch (NullPointerException exception) {
+            return null;
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public String toString() {
+        return "method " + method.getMethod().getDeclaringClass().getName() + "#" + method.getName();
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/package-info.java

@@ -0,0 +1,25 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Interfaces and abstract classes which can be used for implementing classes.
+ *
+ * @since v1-alpha5
+ */
+package de.staropensource.engine.base.internal.implementation;

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/DateDay.java

@@ -0,0 +1,48 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.misc.NumberUtil;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Calendar;
+
+/**
+ * Implements the {@code date_day} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class DateDay implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public DateDay() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%date_day%", NumberUtil.padNumbers(Calendar.getInstance().get(Calendar.DAY_OF_MONTH), 2));
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/DateMonth.java

@@ -0,0 +1,48 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.misc.NumberUtil;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Calendar;
+
+/**
+ * Implements the {@code date_month} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class DateMonth implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public DateMonth() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%date_month%", NumberUtil.padNumbers(Calendar.getInstance().get(Calendar.MONTH), 2));
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/DateYear.java

@@ -0,0 +1,48 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.misc.NumberUtil;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Calendar;
+
+/**
+ * Implements the {@code date_year} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class DateYear implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public DateYear() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%date_year%", NumberUtil.padNumbers(Calendar.getInstance().get(Calendar.YEAR), 4));
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineDependencyJansi.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_dependency_jansi} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineDependencyJansi implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineDependencyJansi() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_dependency_jansi%", EngineInformation.getDependencyJansi());
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineDependencyLwjgl.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_dependency_lwjgl} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineDependencyLwjgl implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineDependencyLwjgl() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_dependency_lwjgl%", EngineInformation.getDependencyLwjgl());
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineDependencyReflections.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_dependency_reflections} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineDependencyReflections implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineDependencyReflections() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_dependency_reflections%", EngineInformation.getDependencyReflections());
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineDependencySlf4j.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_dependency_slf4j} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineDependencySlf4j implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineDependencySlf4j() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_dependency_slf4j%", EngineInformation.getDependencySlf4j());
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineGitBranch.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_git_branch} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineGitBranch implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineGitBranch() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_git_branch%", EngineInformation.getGitBranch());
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineGitCommitHeader.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_git_commit_header} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineGitCommitHeader implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineGitCommitHeader() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_git_commit_header%", EngineInformation.getGitCommitHeader());
+    }
+}

base/src/main/java/de/staropensource/engine/base/internal/implementation/placeholder/EngineGitCommitIdLong.java

@@ -0,0 +1,46 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Authors
+ * Licensed under the GNU Affero General Public License v3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.staropensource.engine.base.internal.implementation.placeholder;
+
+import de.staropensource.engine.base.implementable.Placeholder;
+import de.staropensource.engine.base.utility.information.EngineInformation;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implements the {@code engine_git_commit_id_long} placeholder.
+ *
+ * @see Placeholder
+ * @since v1-alpha0
+ */
+@SuppressWarnings({ "unused" })
+public final class EngineGitCommitIdLong implements Placeholder {
+    /**
+     * Creates and initializes an instance of this event.
+     *
+     * @since v1-alpha0
+     */
+    public EngineGitCommitIdLong() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public @NotNull String replace(@NotNull String text) {
+        return text.replace("%engine_git_commit_id_long%", EngineInformation.getGitCommitIdentifierLong());
+    }
+}