Improve Graphics API initialization

graphics/opengl/src/main/java/de/staropensource/sosengine/graphics/opengl/OpenGlSubsystem.java

@@ -24,6 +24,7 @@ import de.staropensource.sosengine.base.annotations.EventListener;
 import de.staropensource.sosengine.base.classes.helpers.EventHelper;
 import de.staropensource.sosengine.base.data.info.EngineInformation;
 import de.staropensource.sosengine.base.data.versioning.StarOpenSourceVersioningSystem;
+import de.staropensource.sosengine.base.internal.events.InternalEngineShutdownEvent;
 import de.staropensource.sosengine.base.logging.LoggerInstance;
 import de.staropensource.sosengine.base.types.CodePart;
 import de.staropensource.sosengine.base.types.DependencyVector;
@@ -36,6 +37,7 @@ import de.staropensource.sosengine.graphics.classes.ApiMainClass;
 import de.staropensource.sosengine.graphics.classes.ApiManagementClass;
 import de.staropensource.sosengine.graphics.events.GraphicsApiErrorEvent;
 import de.staropensource.sosengine.graphics.opengl.events.GraphicsErrorEvent;
+import de.staropensource.sosengine.graphics.opengl.exceptions.GlfwInitializationException;
 import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 import org.lwjgl.glfw.GLFWErrorCallback;
@@ -133,9 +135,6 @@ public final class OpenGlSubsystem implements ApiMainClass {
     /** {@inheritDoc} */
     @Override
     public void initializeApi() {
-        logger.verb("Initializing Graphics API");
-
-        long initTime = Miscellaneous.measureExecutionTime(() -> {
         // Set error callback
         try (GLFWErrorCallback errorCallback = GLFWErrorCallback.create(new GraphicsErrorEvent())) {
             errorCallback.set();
@@ -143,14 +142,11 @@ public final class OpenGlSubsystem implements ApiMainClass {
 
         // Initialize GLFW
         if (!glfwInit())
-                logger.crash("Unable to initialize GLFW");
+            throw new GlfwInitializationException();
 
         // Initialize management class
         internalApi = new OpenGlInternalApi();
         management = new OpenGlManagement();
-        });
-
-        logger.info("Initialized Graphics API in " + initTime + "ms");
     }
 
     /**

graphics/opengl/src/main/java/de/staropensource/sosengine/graphics/opengl/exceptions/GlfwInitializationException.java

@@ -0,0 +1,34 @@
+/*
+ * STAROPENSOURCE ENGINE SOURCE FILE
+ * Copyright (c) 2024 The StarOpenSource Engine Contributors
+ * 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.sosengine.graphics.opengl.exceptions;
+
+/**
+ * Thrown when GLFW fails to initialize.
+ *
+ * @since v1-alpha2
+ */
+public class GlfwInitializationException extends RuntimeException {
+    /**
+     * Constructs this exception.
+     *
+     * @since v1-alpha2
+     */
+    public GlfwInitializationException() {}
+}

graphics/opengl/src/main/java/de/staropensource/sosengine/graphics/opengl/exceptions/NotOnMainThreadException.java

@@ -24,4 +24,11 @@ package de.staropensource.sosengine.graphics.opengl.exceptions;
  *
  * @since v1-alpha2
  */
-public class NotOnMainThreadException extends Throwable {}
+public class NotOnMainThreadException extends RuntimeException {
+    /**
+     * Constructs this exception.
+     *
+     * @since v1-alpha2
+     */
+    public NotOnMainThreadException() {}
+}

graphics/src/main/java/de/staropensource/sosengine/graphics/GraphicsSubsystem.java

@@ -201,20 +201,21 @@ public final class GraphicsSubsystem implements SubsystemMainClass {
         // Check if registered apis are compatible
         for (String apiName : registeredApis.keySet())
             if (registeredApis.get(apiName).isCompatible()) {
-                logger.diag("Choosing a compatible Graphics API: " + apiName + " is compatible");
+                logger.diag("" + apiName + " is compatible");
                 compatibleApis.add(apiName);
             } else
-                logger.diag("Choosing a compatible Graphics API: " + apiName + " is not compatible");
+                logger.diag(apiName + " is not compatible");
 
-        logger.diag("Choosing a compatible Graphics API: Compatible are: " + ListFormatter.formatList(compatibleApis));
+        logger.diag("Compatible are " + ListFormatter.formatList(compatibleApis));
 
         // Choose last item in list.
         if (!compatibleApis.isEmpty()) {
-            logger.verb("Choosing a compatible Graphics API: Chose Graphics API " + compatibleApis.getLast());
+            logger.verb("Chose Graphics API " + compatibleApis.getLast());
 
             api = registeredApis.get(compatibleApis.getLast());
             try {
-                api.initializeApi();
+                logger.diag("Initializing Graphics API " + api.getApiName());
+                logger.diag("Initialized Graphics API " + api.getApiName() + " in " + Miscellaneous.measureExecutionTime(() -> api.initializeApi()) + "ms");
             } catch (Throwable throwable) {
                 logger.crash("Graphics API " + api.getApiName() + " failed to initialize", throwable, true);
                 throw throwable;
@@ -231,20 +232,25 @@ public final class GraphicsSubsystem implements SubsystemMainClass {
      * Sets the Graphics API to use.
      *
      * @param name name of the Graphics API
+     * @return if the Graphics API has been found
      * @see GraphicsSubsystem#setGraphicsApi()
      * @since v1-alpha0
      */
-    public void setGraphicsApi(@NotNull String name) {
+    public boolean setGraphicsApi(@NotNull String name) {
-        logger.verb("Setting Graphics API " + name);
-
         if (!registeredApis.containsKey(name))
-            logger.crash("Unable to set Graphics API: Graphics API " + name + " is not registered");
+            return false;
+
+        logger.verb("Setting Graphics API " + name);
 
         if (api == null)
             api = registeredApis.get(name);
         else
             logger.crash("Unable to set Graphics API: Graphics API " + api.getApiName() + " already registered");
 
-        api.initializeApi();
+        // Initialize API
+        logger.diag("Initializing Graphics API " + api.getApiName());
+        logger.diag("Initialized Graphics API " + api.getApiName() + " in " + Miscellaneous.measureExecutionTime(() -> api.initializeApi()) + "ms");
+
+        return true;
     }
 }

testapp/src/main/java/de/staropensource/sosengine/testapp/Main.java

@@ -103,9 +103,8 @@ public class Main {
         logger.info("Hello world!");
 
         // Choose Graphics API to use
-        if (!GraphicsSubsystem.getInstance().setGraphicsApi()) {
+        if (!GraphicsSubsystem.getInstance().setGraphicsApi())
             logger.crash("No Graphics API is compatible");
-        }
 
         // Define 'api' & 'management' variables
         ApiMainClass api = GraphicsSubsystem.getInstance().getApi();