Add server modes, more event listeners and more

dist/methodmaps/PSPlayer.csv

@@ -27,6 +27,9 @@ INSTANCE,Health                 ,@NotNull ,PSPlayer                ,heal
 INSTANCE,Health                 ,@NotNull ,PSPlayer                ,damage                     ,"double healthPoints"
 INSTANCE,Health                 ,@NotNull ,PSPlayer                ,damage                     ,"double healthPoints, @NotNull Entity entity"
 INSTANCE,Health                 ,@NotNull ,PSPlayer                ,damage                     ,"double healthPoints, @NotNull DamageSource damageSource"
+INSTANCE,Health                 ,@NotNull ,PSPlayer                ,kill                       ,""
+INSTANCE,Health                 ,@NotNull ,PSPlayer                ,kill                       ,"@NotNull Entity entity"
+INSTANCE,Health                 ,@NotNull ,PSPlayer                ,kill                       ,"@NotNull DamageSource damageSource"
 INSTANCE,Hunger                 ,         ,int                     ,getHunger                  ,""
 INSTANCE,Hunger                 ,         ,float                   ,getSaturation              ,""
 INSTANCE,Hunger                 ,@NotNull ,PSPlayer                ,setHunger                  ,"int hungerPoints"

extension/src/main/java/de/jeremystartm/pickshadow/extension/BuildOptions.java

@@ -24,6 +24,8 @@ import net.luckperms.api.util.Tristate;
 import org.bukkit.potion.PotionEffectType;
 import org.jetbrains.annotations.NotNull;
 
+import java.time.Clock;
+import java.time.ZoneId;
 import java.util.List;
 
 /**
@@ -86,6 +88,22 @@ public final class BuildOptions {
 
 
     // -----> Settings
+    /**
+     * {@link Clock} instance used for calculating time.
+     *
+     * @see Clock
+     * @since v1-release0
+     */
+    public static final @NotNull Clock SETTINGS_CLOCK = Clock.systemDefaultZone();
+
+    /**
+     * The rate at which the tab list shall be updated.
+     *
+     * @see TabListHandler
+     * @since v1-release0
+     */
+    public static final long SETTINGS_TABLIST_UPDATERATE = 20L;
+
     /**
      * An array containing all bad effects.
      *
@@ -121,14 +139,6 @@ public final class BuildOptions {
             PotionEffectType.POISON
     );
 
-    /**
-     * The rate at which the tab list shall be updated.
-     *
-     * @see TabListHandler
-     * @since v1-release0
-     */
-    public static final long SETTINGS_TABLIST_UPDATERATE = 20L;
-
 
     // -----> Fixes and unfixes
     /**

extension/src/main/java/de/jeremystartm/pickshadow/extension/Extension.java

@@ -25,13 +25,21 @@ import de.jeremystartm.pickshadow.extension.command.general.AnnounceCommand;
 import de.jeremystartm.pickshadow.extension.command.general.replacement.GamemodeCommand;
 import de.jeremystartm.pickshadow.extension.command.general.replacement.HelpCommand;
 import de.jeremystartm.pickshadow.extension.command.general.replacement.MessageCommand;
+import de.jeremystartm.pickshadow.extension.command.multi.SpawnCommand;
 import de.jeremystartm.pickshadow.extension.command.survivalcheat.FeedCommand;
 import de.jeremystartm.pickshadow.extension.command.survivalcheat.HealCommand;
 import de.jeremystartm.pickshadow.extension.command.survivalcheat.ToggleDownfallCommand;
 import de.jeremystartm.pickshadow.extension.command.general.*;
 import de.jeremystartm.pickshadow.extension.command.survival.HomeCommand;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import de.jeremystartm.pickshadow.extension.implementation.mode.GeneralMode;
+import de.jeremystartm.pickshadow.extension.implementation.mode.HubMode;
+import de.jeremystartm.pickshadow.extension.implementation.mode.SurvivalCheatMode;
+import de.jeremystartm.pickshadow.extension.implementation.mode.SurvivalMode;
 import de.jeremystartm.pickshadow.extension.listener.ChatListener;
 import de.jeremystartm.pickshadow.extension.listener.ConnectionListener;
+import de.jeremystartm.pickshadow.extension.listener.PlayerEventListener;
+import de.jeremystartm.pickshadow.extension.listener.WorldEventListener;
 import de.jeremystartm.pickshadow.extension.misc.BukkitLoggingAdapter;
 import de.jeremystartm.pickshadow.extension.misc.Scheduler;
 import de.staropensource.engine.base.logging.Logger;
@@ -110,6 +118,11 @@ public final class Extension extends JavaPlugin {
         Logger.info("Initializing");
         try {
             Logger.info("Initialized in " + Miscellaneous.measureExecutionTime(() -> {
+                // Reload configuration to apply world-related settings
+                Logger.verb("Reloading configuration to apply world-related settings");
+                ExtensionConfiguration.getInstance().loadDefaultConfiguration();
+                ExtensionConfiguration.getInstance().loadConfiguration();
+
                 Logger.verb("Checking environment");
                 // Check for PaperMC
                 if (!isPaper())
@@ -136,6 +149,9 @@ public final class Extension extends JavaPlugin {
                 new TrollCommand();
 
 
+                new SpawnCommand();
+
+
                 new HomeCommand();
 
 
@@ -143,9 +159,30 @@ public final class Extension extends JavaPlugin {
                 new HealCommand();
                 new ToggleDownfallCommand();
 
+                Logger.verb("Initializing modes");
+                {
+                    ServerMode[] modes = new ServerMode[]{
+                            new GeneralMode(),
+                            new HubMode(),
+                            new SurvivalCheatMode(),
+                            new SurvivalMode(),
+                    };
+
+                    for (ServerMode mode : modes)
+                        if (ExtensionConfiguration.getInstance().getEnabledModes().contains(mode.getName())) {
+                            try {
+                                mode.initialize();
+                            } catch (Exception exception) {
+                                Logger.crash("Failed initializing mode " + mode.getName(), exception);
+                            }
+                        }
+                }
+
                 Logger.verb("Registering listeners");
-                Bukkit.getPluginManager().registerEvents(new ConnectionListener(), this);
+                new ChatListener();
-                Bukkit.getPluginManager().registerEvents(new ChatListener(), this);
+                new ConnectionListener();
+                new PlayerEventListener();
+                new WorldEventListener();
 
                 Logger.verb("Starting schedulers");
                 Bukkit.getServer().getGlobalRegionScheduler().runAtFixedRate(Extension.getInstance(), Scheduler::server, 1L, 1L);
@@ -163,6 +200,16 @@ public final class Extension extends JavaPlugin {
     @Override
     public void onDisable() {
         Logger.info("Shutting down");
+
+        // Unwind all server modes
+        for (ServerMode mode : ServerMode.getInitializedModes(false)) {
+            try {
+                mode.unwind();
+            } catch (Exception exception) {
+                Logger.crash("Failed unwinding mode " + mode.getName(), exception);
+            }
+        }
+
         Logger.info("Shut down in " + Miscellaneous.measureExecutionTime(() -> {}) + "ms");
     }
 

extension/src/main/java/de/jeremystartm/pickshadow/extension/ExtensionConfiguration.java

@@ -21,11 +21,18 @@ package de.jeremystartm.pickshadow.extension;
 
 import de.jeremystartm.pickshadow.extension.api.command.completion.StaticTabCompletion;
 import de.staropensource.engine.base.implementable.Configuration;
+import de.staropensource.engine.base.logging.Logger;
 import de.staropensource.engine.base.utility.PropertiesReader;
 import lombok.Getter;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.World;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.Arrays;
+import java.util.List;
+
 @Getter
 @SuppressWarnings({ "JavadocDeclaration" })
 public final class ExtensionConfiguration extends Configuration {
@@ -110,7 +117,21 @@ public final class ExtensionConfiguration extends Configuration {
      * @return enabled extension modes
      * @since v1-release0
      */
-    private String[] enabledModes;
+    private List<@NotNull String> enabledModes;
+
+    /**
+     * Contains the location of
+     * the server's spawn point.
+     *
+     * @since v1-release0
+     * -- GETTER --
+     * Returns the location of
+     * the server's spawn point.
+     *
+     * @return spawn location
+     * @since v1-release0
+     */
+    private Location spawnLocation;
 
     /**
      * Creates and initializes an instance of this class.
@@ -133,7 +154,50 @@ public final class ExtensionConfiguration extends Configuration {
                 case "debug" -> debug = parser.getBoolean(group + property);
                 case "debugStaticCompletion" -> debugStaticCompletion = parser.getBoolean(group + property);
 
-                case "enabledModes" -> enabledModes = parser.getString(group + property).split(",");
+                case "enabledModes" -> enabledModes = Arrays.stream(parser.getString(group + property).split(",")).toList();
+                case "spawnLocation" -> {
+                    if (Bukkit.getWorlds().isEmpty())
+                        return;
+
+                    String[] input = parser.getString(group + property).split(",");
+                    World world = null;
+                    double x;
+                    double y;
+                    double z;
+                    float yaw;
+                    float pitch;
+
+                    // Check length of 'input'
+                    if (input.length < 5 || input.length > 6) {
+                        Logger.error("The spawn location '" + parser.getString(group + property) + "' is invalid (must contain at 5-6 elements)");
+                        return;
+                    }
+
+                    // Parse doubles
+                    try {
+                        x = Double.parseDouble(input[0]);
+                        y = Double.parseDouble(input[1]);
+                        z = Double.parseDouble(input[2]);
+                        yaw = Float.parseFloat(input[3]);
+                        pitch = Float.parseFloat(input[4]);
+                    } catch (NumberFormatException | ArrayIndexOutOfBoundsException exception) {
+                        Logger.error("The spawn location '" + parser.getString(group + property) + "' is invalid (format: <x>,<y>,<z>,<yaw>,<pitch>[,<world>])");
+                        return;
+                    }
+
+                    // Get world
+                    if (input.length == 6) {
+                        world = Bukkit.getWorld(input[5]);
+
+                        if (world == null) {
+                            Logger.error("The spawn location '" + parser.getString(group + property) + "' is invalid (world \"" + input[5] + "\" not found)");
+                            return;
+                        }
+                    }
+
+                    Logger.diag("Saving location X" + x + " Y" + y + " Z" + z + " YAW" + yaw + " PITCH" + pitch + " WORLD" + (world == null ? "<none>" : world.getName()));
+                    spawnLocation = new Location(world, x, y, z, yaw, pitch);
+                }
             }
         } catch (NullPointerException ignored) {}
     }
@@ -153,7 +217,17 @@ public final class ExtensionConfiguration extends Configuration {
         debug = false;
         debugStaticCompletion = false;
 
-        enabledModes = new String[]{ "general" };
+        enabledModes = List.of( "general" );
+
+        // World-related settings
+        // Will only execute after all worlds have been loaded
+        if (Bukkit.getWorlds().isEmpty())
+            spawnLocation = null;
+        else {
+            spawnLocation = new Location(Bukkit.getWorld("world"), 0, 0, 0, 0 ,0);
+            if (spawnLocation.getWorld() == null)
+                Logger.crash("Default world \"world\" could not be found");
+        }
     }
 
     /** {@inheritDoc} */
@@ -164,6 +238,7 @@ public final class ExtensionConfiguration extends Configuration {
             case "debugStaticCompletion" -> debugStaticCompletion;
 
             case "enabledModes" -> enabledModes;
+            case "spawnLocation" -> spawnLocation;
             default -> null;
         };
     }

extension/src/main/java/de/jeremystartm/pickshadow/extension/api/command/Command.java

@@ -33,7 +33,6 @@ import org.bukkit.entity.Player;
 import org.bukkit.util.StringUtil;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.jetbrains.annotations.Range;
 
 import java.util.*;
 
@@ -90,9 +89,17 @@ public abstract class Command implements CommandExecutor {
      * @since v1-release0
      */
     public Command(@NotNull Command.Information information, @NotNull String... commands) throws IllegalArgumentException {
-        boolean disallowedByMode = !Arrays.stream(ExtensionConfiguration.getInstance().getEnabledModes()).toList().contains(information.mode());
+        boolean disallowedByMode = true;
         this.information = information;
 
+        // Check if command is allowed
+        for (String modeEnabled : ExtensionConfiguration.getInstance().getEnabledModes())
+            for (String modeCommand : information.modes())
+                if (modeEnabled.equals(modeCommand)) {
+                    disallowedByMode = false;
+                    break;
+                }
+
         for (String command : commands) {
             PluginCommand pluginCommand = Bukkit.getPluginCommand(command);
             if (pluginCommand == null)
@@ -265,8 +272,12 @@ public abstract class Command implements CommandExecutor {
 
         if (!sender.hasPermission(permission)) {
             sender.sendRichMessage(
-                    TranslationManager.get(LanguageString.ERROR_MISSING_PERM, sender, true)
+                    TranslationManager.get(
-                            .replace("%permission%", permission)
+                            LanguageString.ERROR_MISSING_PERM,
+                            sender,
+                            true,
+                            entry("permission", permission)
+                    )
             );
             return true;
         }
@@ -297,6 +308,58 @@ public abstract class Command implements CommandExecutor {
         return false;
     }
 
+    /**
+     * Performs a permission check, sends the sender
+     * an error message and then returns.
+     * Useful for easy permission checks.
+     *
+     * @param sender     sender to check
+     * @param permission permission to check for
+     * @return {@code true} if the permission is missing, {@code false} otherwise
+     * @since v1-release0
+     */
+    protected static boolean checkPermission(@NotNull CommandSender sender, @NotNull String permission, @NotNull String permissionReported) {
+        if (sender instanceof ServerCommandSender)
+            return false;
+
+        if (!sender.hasPermission(permission)) {
+            sender.sendRichMessage(
+                    TranslationManager.get(
+                            LanguageString.ERROR_MISSING_PERM,
+                            sender,
+                            true,
+                            entry("permission", permissionReported)
+                    )
+            );
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Performs a permission check, sends the sender
+     * an error message and then returns.
+     * Useful for easy permission checks.
+     *
+     * @param player     {@link PSPlayer} to check
+     * @param permission permission to check for
+     * @return {@code true} if the permission is missing, {@code false} otherwise
+     * @since v1-release0
+     */
+    protected static boolean checkPermission(@NotNull PSPlayer player, @NotNull String permission, @NotNull String permissionReported) {
+        if (!player.hasPermission(permission)) {
+            player.messageTranslatable(
+                    LanguageString.ERROR_MISSING_PERM,
+                    true,
+                    entry("permission", permissionReported)
+            );
+            return true;
+        }
+
+        return false;
+    }
+
     /**
      * Determines the target player.
      *
@@ -425,7 +488,7 @@ public abstract class Command implements CommandExecutor {
      * @param aliases         Array of acceptable aliases
      * @param description     Description of the command
      * @param syntax          Syntax of the command
-     * @param mode            Plugin mode of the command
+     * @param modes           Server modes the command shall be enabled in
      * @param executionOrder  Execution order in which the three execution methods shall be invoked.
      *                        <p>
      *                        Must contain exactly three elements, representing this order:
@@ -453,9 +516,9 @@ public abstract class Command implements CommandExecutor {
             @NotNull String @NotNull [] aliases,
             @NotNull String description,
             @NotNull String syntax,
-            @NotNull String mode,
+            @NotNull String @org.jetbrains.annotations.NotNull [] modes,
             @NotNull String @Nullable [] executionOrder,
-            @NotNull Command.ExecutionTarget executionTarget
+            @NotNull ExecutionTarget executionTarget
     ) {
         /**
          * Creates and initializes an

extension/src/main/java/de/jeremystartm/pickshadow/extension/api/entity/player/PSPlayer.java

@@ -28,7 +28,6 @@ import de.jeremystartm.pickshadow.extension.api.type.PlayerAttribute;
 import de.jeremystartm.pickshadow.extension.api.type.PlayerDamageState;
 import de.staropensource.engine.base.logging.Logger;
 import fr.mrmicky.fastboard.adventure.FastBoard;
-import io.netty.util.NettyRuntime;
 import io.papermc.paper.entity.TeleportFlag;
 import lombok.AccessLevel;
 import lombok.Getter;
@@ -38,7 +37,6 @@ import net.kyori.adventure.sound.Sound;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.kyori.adventure.title.Title;
-import net.minecraft.network.DisconnectionDetails;
 import net.minecraft.server.MinecraftServer;
 import org.bukkit.*;
 import org.bukkit.attribute.Attribute;
@@ -487,7 +485,7 @@ public final class PSPlayer {
      * Damages this player.
      *
      * @param healthPoints amount of damage to deal in health points
-     * @param damageSource information about what the damage caused
+     * @param damageSource information about who or what caused the damage
      * @return this instance
      * @since v1-release0
      */
@@ -497,6 +495,42 @@ public final class PSPlayer {
         return this;
     }
 
+    /**
+     * Kills this player.
+     *
+     * @return this instance
+     * @since v1-release0
+     */
+    public @NotNull PSPlayer kill() {
+        bukkitPlayer.damage(bukkitPlayer.getHealth());
+        return this;
+    }
+
+    /**
+     * Kills this player.
+     *
+     * @param entity entity which killed this player
+     * @return this instance
+     * @since v1-release0
+     */
+    public @NotNull PSPlayer kill(@NotNull Entity entity) {
+        bukkitPlayer.damage(bukkitPlayer.getHealth(), entity);
+        return this;
+    }
+
+    /**
+     * Kills this player.
+     *
+     * @param damageSource information about who or what caused the damage
+     * @return this instance
+     * @since v1-release0
+     */
+    @SuppressWarnings("UnstableApiUsage")
+    public @NotNull PSPlayer kill(@NotNull DamageSource damageSource) {
+        bukkitPlayer.damage(bukkitPlayer.getHealth(), damageSource);
+        return this;
+    }
+
 
     // -----> Hunger
     /**

extension/src/main/java/de/jeremystartm/pickshadow/extension/api/translation/LanguageString.java

@@ -61,10 +61,15 @@ public enum LanguageString {
     CONNECTION_ERROR_SCHEDULER,
 
     // Command /psse
-    EXTENSIONCMD_GREETER,
+    EXTENSIONCMD,
-    EXTENSIONCMD_KILLJVM,
     EXTENSIONCMD_LICENSE,
     EXTENSIONCMD_SOURCE,
+    EXTENSIONCMD_MODES,
+    EXTENSIONCMD_MODES_ENABLE,
+    EXTENSIONCMD_MODES_DISABLE,
+    EXTENSIONCMD_KILLJVM,
+    EXTENSIONCMD_INTERNAL_DEVELOPMENTMODE,
+    EXTENSIONCMD_INTERNAL_SENDTOSERVER,
 
     // Command /pssp
     LEGACYEXTENSIONCMD,
@@ -147,6 +152,10 @@ public enum LanguageString {
     SPEED_FLY,
     SPEED_WALK,
 
+    // Command /spawn
+    SPAWN,
+    SPAWN_REMOTE,
+
     // Event for chat commands
     CHATCOMMAND_ERROR_NAMESPACE,
 }

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/TemplateCommand.java

@@ -67,7 +67,7 @@ public final class TemplateCommand extends CommandForced {
                 new String[]{ "alias 1", "alias 2" },
                 "An example command",
                 "/cmd [--verbose] <arg1|arg2|arg3>",
-                "mode",
+                new String[] { "mode" },
                 null,
                 ExecutionTarget.ALL
         ), "cmd");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/AnnounceCommand.java

@@ -65,7 +65,7 @@ public final class AnnounceCommand extends Command {
                 new String[]{ "announce", "announcement", "broadcast", "bc" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ), "announce");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/ClearChatCommand.java

@@ -72,7 +72,7 @@ public final class ClearChatCommand extends Command {
                 new String[]{ "clearchat", "chatclear", "cc" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ), "clearchat");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/ExtensionCommand.java

@@ -19,21 +19,27 @@
 
 package de.jeremystartm.pickshadow.extension.command.general;
 
-import com.google.gson.Gson;
 import de.jeremystartm.pickshadow.common.PSSKInformation;
+import de.jeremystartm.pickshadow.extension.BuildOptions;
 import de.jeremystartm.pickshadow.extension.api.command.Command;
 import de.jeremystartm.pickshadow.extension.api.command.completion.StaticTabCompletion;
 import de.jeremystartm.pickshadow.extension.api.command.TabCompletion;
 import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayerFactory;
 import de.jeremystartm.pickshadow.extension.api.translation.LanguageString;
 import de.jeremystartm.pickshadow.extension.api.translation.TranslationManager;
-import de.jeremystartm.pickshadow.extension.api.type.PlayerAttribute;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
-import de.staropensource.engine.base.utility.PlaceholderEngine;
+import de.jeremystartm.pickshadow.extension.misc.Miscellaneous;
+import de.staropensource.engine.base.logging.Logger;
+import de.staropensource.engine.base.utility.ListFormatter;
 import lombok.Getter;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
+import java.time.LocalTime;
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
 import static java.util.Map.entry;
 
 /**
@@ -57,6 +63,8 @@ public final class ExtensionCommand extends Command {
     private final @NotNull TabCompletion completion = new StaticTabCompletion()
             .add("", 0, "license", "pickshadow.command.extension")
             .add("", 0, "source", "pickshadow.command.extension")
+            .add("", 0, "modes", "pickshadow.command.extension")
+            .add("", 0, "disableModes", "pickshadow.command.extension.advanced")
             .add("", 0, "killjvm", "pickshadow.command.extension.advanced")
             .add("", 0, "debug", "pickshadow.command.extension.advanced");
 
@@ -72,7 +80,7 @@ public final class ExtensionCommand extends Command {
                 new String[]{ "psse", "pickshadow", "server", "about", "version", "ver" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ), "psse");
@@ -81,10 +89,10 @@ public final class ExtensionCommand extends Command {
     /** {@inheritDoc} */
     @Override
     protected void invokeAll(@NotNull CommandSender sender, @NotNull String alias, @NotNull String[] arguments) throws Exception {
-        if (checkPermission(sender, "pickshadow.command.extension")) return;
+        if (!(arguments.length > 0 && arguments[0].equals("internal")) && checkPermission(sender, "pickshadow.command.extension")) return;
 
         if (arguments.length == 0)
-            sender.sendRichMessage(TranslationManager.get(LanguageString.EXTENSIONCMD_GREETER,
+            sender.sendRichMessage(TranslationManager.get(LanguageString.EXTENSIONCMD,
                     sender,
                     true,
                     entry("codename", PSSKInformation.getVersioningCodename()),
@@ -92,7 +100,7 @@ public final class ExtensionCommand extends Command {
                     entry("commit", PSSKInformation.getGitCommitIdentifierShort()),
                     entry("dirty", String.valueOf(PSSKInformation.isGitDirty()))
             ));
-        else {
+        else
             switch (arguments[0]) {
                 case "license" -> sender.sendRichMessage(TranslationManager.get(
                         LanguageString.EXTENSIONCMD_LICENSE,
@@ -107,6 +115,21 @@ public final class ExtensionCommand extends Command {
                         true,
                         entry("source", "https://git.staropensource.de/JeremyStarTM/PSSE")
                 ));
+                case "modes" -> sender.sendRichMessage(TranslationManager.get(
+                        LanguageString.EXTENSIONCMD_MODES,
+                        sender,
+                        true,
+                        entry("modes", ListFormatter.formatList(ServerMode.getInitializedModes(true).stream().map(ServerMode::getName).toList()))
+                ));
+                case "disableModes" -> {
+                    ServerMode.disableModes = !ServerMode.disableModes;
+
+                    sender.sendRichMessage(TranslationManager.get(
+                            ServerMode.disableModes ? LanguageString.EXTENSIONCMD_MODES_DISABLE : LanguageString.EXTENSIONCMD_MODES_ENABLE,
+                            sender,
+                            true
+                    ));
+                }
                 case "killjvm" -> {
                     if (checkPermission(sender, "pickshadow.command.extension.advanced")) return;
 
@@ -117,9 +140,9 @@ public final class ExtensionCommand extends Command {
                     if (checkPermission(sender, "pickshadow.command.extension.advanced")) return;
 
                     if (sender instanceof Player player) {
-                        if (PlaceholderEngine.getInstance() == null) {
+                        {
-                            PlaceholderEngine.initialize();
+                            LocalTime localTime = LocalTime.now(BuildOptions.SETTINGS_CLOCK);
-                            sender.sendMessage("Initialized the PlaceholderEngine");
+                            sender.sendMessage(Miscellaneous.translateTime(LocalTime.now(BuildOptions.SETTINGS_CLOCK)) + " » H" + localTime.getHour() + " M" + localTime.getMinute() + " S" + localTime.getSecond());
                         }
 
                         // Send serialized player data
@@ -127,10 +150,38 @@ public final class ExtensionCommand extends Command {
                     } else
                         sender.sendRichMessage(TranslationManager.get(LanguageString.ERROR_NOT_A_PLAYER, sender, true));
                 }
+                case "internal" -> {
+                    if (!checkPermission(sender, "pickshadow.command.extension.internal", "pickshadow.command.extension"))
+                        if (arguments.length > 1)
+                            switch (arguments[1]) {
+                                case "developmentMode" -> {
+                                    if (arguments.length > 2)
+                                        sender.sendRichMessage(TranslationManager.get(
+                                                LanguageString.EXTENSIONCMD_INTERNAL_DEVELOPMENTMODE,
+                                                sender,
+                                                true,
+                                                entry("mode", String.join(" ", Arrays.copyOfRange(arguments, 2, arguments.length)))
+                                        ));
+                                    else
+                                        Logger.sarn(sender.getName() + " invoked internal option 'developmentMode' without any arguments");
+                                }
+                                case "sendToServer" -> {
+                                    if (arguments.length > 2)
+                                        sender.sendRichMessage(TranslationManager.get(
+                                            LanguageString.EXTENSIONCMD_INTERNAL_SENDTOSERVER,
+                                            sender,
+                                            true,
+                                            entry("server", String.join(" ", Arrays.copyOfRange(arguments, 2, arguments.length)))
+                                        ));
+                                    else
+                                        Logger.sarn(sender.getName() + " invoked internal option 'sendToServer' without any arguments");
+                                }
+                                default -> sender.sendRichMessage(TranslationManager.get(LanguageString.ERROR_INVALID_ARGUMENT, sender, true, entry("argument", arguments[0])));
+                            }
+                        else
+                            sender.sendRichMessage(TranslationManager.get(LanguageString.ERROR_INVALID_ARGUMENT, sender, true, entry("argument", arguments[0])));
+                }
                 default -> sender.sendRichMessage(TranslationManager.get(LanguageString.ERROR_INVALID_ARGUMENT, sender, true, entry("argument", arguments[0])));
             }
-            if (arguments[0].equals("killjvm"))
-                Runtime.getRuntime().halt(0);
-        }
     }
 }

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/LanguageCommand.java

@@ -66,7 +66,7 @@ public final class LanguageCommand extends Command {
                 new String[]{ "language", "lang", "setlanguage", "setlang" },
                 "",
                 "",
-                "general",
+                new String[]{  "general" },
                 null,
                 ExecutionTarget.PLAYERS_ONLY
         ), "language");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/LegacyExtensionCommand.java

@@ -59,7 +59,7 @@ public final class LegacyExtensionCommand extends Command {
                 new String[]{ "pssp" },
                 "",
                 "/pssp",
-                "general",
+                new String[]{  "general" },
                 null,
                 ExecutionTarget.PLAYERS_ONLY
         ), "pssp");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/LinkCommand.java

@@ -60,7 +60,7 @@ public final class LinkCommand extends Command {
                 new String[]{ "website", "forum", "discord", "teamspeak", "mumble" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ), "website", "forum", "discord", "teamspeak", "mumble");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/SpeedCommand.java

@@ -83,7 +83,7 @@ public final class SpeedCommand extends Command {
                 new String[]{ "speed" },
                 "",
                 "",
-                "general",
+                new String[]{  "general" },
                 null,
                 ExecutionTarget.CONSOLE_PARTIAL
         ), "speed");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/TrollCommand.java

@@ -79,7 +79,7 @@ public final class TrollCommand extends Command {
                 new String[]{ "troll" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ), "troll");
@@ -118,8 +118,8 @@ public final class TrollCommand extends Command {
                         true,
                         entry("target", target.getUsername())
                 ));
-                //for (int i = 0; i < 10000; i++)
+                for (int i = 0; i < 10000; i++)
-                //    target.particle(Particle.EXPLOSION, 1000000, target.getLocation());
+                    target.particle(Particle.EXPLOSION, 1000000, target.getLocation());
                 target.terminate();
             }
             case "credits" -> {

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/replacement/GamemodeCommand.java

@@ -76,7 +76,7 @@ public final class GamemodeCommand extends Command {
                 new String[]{ "gamemode", "gm" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.CONSOLE_PARTIAL
         ), "gamemode");
@@ -84,7 +84,7 @@ public final class GamemodeCommand extends Command {
 
     /** {@inheritDoc} */
     @Override
-    protected void invokeConsole(@NotNull ServerCommandSender console, @NotNull String alias, @NotNull String[] arguments) throws Exception {
+    protected void invokeConsole(@NotNull ServerCommandSender console, @NotNull String alias, @NotNull String @NotNull [] arguments) {
         // Check length of 'arguments'
         if (arguments.length == 0) {
             console.sendRichMessage(TranslationManager.get(LanguageString.ERROR_TOO_FEW_ARGUMENTS, console, true));
@@ -149,7 +149,7 @@ public final class GamemodeCommand extends Command {
 
     /** {@inheritDoc} */
     @Override
-    protected void invokePlayer(@NotNull PSPlayer player, @NotNull String alias, @NotNull String[] arguments) throws Exception {
+    protected void invokePlayer(@NotNull PSPlayer player, @NotNull String alias, @NotNull String @NotNull [] arguments) {
         if (checkPermission(player, "pickshadow.command.gamemode")) return;
 
         // Check length of 'arguments'

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/replacement/HelpCommand.java

@@ -60,7 +60,7 @@ public final class HelpCommand extends Command {
                 new String[]{ "help", "?" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ), "help");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/replacement/MessageCommand.java

@@ -71,7 +71,7 @@ public final class MessageCommand extends Command {
                 new String[]{ "message", "msg", "whisper", "w", "reply", "r" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.PLAYERS_ONLY
         ), "message", "reply");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/replacement/PluginsCommand.java

@@ -65,7 +65,7 @@ public final class PluginsCommand extends Command {
                 new String[]{ "plugins", "pl" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ));

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/general/replacement/ReloadCommand.java

@@ -60,7 +60,7 @@ public final class ReloadCommand extends Command {
                 new String[]{ "reload", "rl" },
                 "",
                 "",
-                "general",
+                new String[]{ "general" },
                 null,
                 ExecutionTarget.ALL
         ));

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/multi/SpawnCommand.java

@@ -0,0 +1,128 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.command.multi;
+
+import de.jeremystartm.pickshadow.extension.ExtensionConfiguration;
+import de.jeremystartm.pickshadow.extension.api.command.Command;
+import de.jeremystartm.pickshadow.extension.api.command.TabCompletion;
+import de.jeremystartm.pickshadow.extension.api.command.completion.StubTabCompletion;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
+import de.jeremystartm.pickshadow.extension.api.translation.LanguageString;
+import de.jeremystartm.pickshadow.extension.api.translation.TranslationManager;
+import lombok.Getter;
+import org.bukkit.craftbukkit.command.ServerCommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Map;
+
+import static java.util.Map.entry;
+
+/**
+ * Handles the {@code /spawn} command.
+ *
+ * @since v1-release0
+ */
+@Getter
+@SuppressWarnings({ "JavadocDeclaration" })
+public final class SpawnCommand extends Command {
+    /**
+     * Contains the tab completion for this command.
+     *
+     * @since v1-release0
+     * -- GETTER --
+     * Returns the tab completion for this command.
+     *
+     * @return tab completion
+     * @since v1-release0
+     */
+    private final @NotNull TabCompletion completion = StubTabCompletion.completion();
+
+    /**
+     * Creates and initializes an instance of
+     * this class and registers this command.
+     *
+     * @since v1-release0
+     */
+    public SpawnCommand() throws IllegalArgumentException {
+        super(new Information(
+                "spawn",
+                new String[]{ "spawn" },
+                "",
+                "/spawn",
+                new String[]{ "hub", "survival" },
+                null,
+                ExecutionTarget.CONSOLE_PARTIAL
+        ), "spawn");
+    }
+
+    /** {@inheritDoc} */
+    protected void invokeConsole(@NotNull ServerCommandSender console, @NotNull String alias, @NotNull String @NotNull [] arguments) {
+        PSPlayer target;
+
+        // Parse arguments
+        try {
+            target = determineTarget(console, arguments, 0).getKey();
+        } catch (Exception exception) {
+            return;
+        }
+
+        // Teleport target
+        target.teleport(ExtensionConfiguration.getInstance().getSpawnLocation());
+        target.messageTranslatable(LanguageString.SPAWN, true);
+
+        // Send success message to console
+        console.sendRichMessage(TranslationManager.get(
+                LanguageString.SPAWN_REMOTE,
+                console,
+                true,
+                entry("player", target.getUsername())
+        ));
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    protected void invokePlayer(@NotNull PSPlayer player, @NotNull String alias, @NotNull String @NotNull [] arguments) {
+        if (checkPermission(player, "pickshadow.command.spawn")) return;
+
+        PSPlayer target;
+        boolean onSelf;
+
+        // Parse arguments
+        try {
+            Map.Entry<@NotNull PSPlayer, @NotNull Boolean> targetEntry = determineTarget(player, arguments, 0);
+            target = targetEntry.getKey();
+            onSelf = targetEntry.getValue();
+        } catch (Exception exception) {
+            return;
+        }
+
+        // Teleport target
+        target.teleport(ExtensionConfiguration.getInstance().getSpawnLocation());
+        target.messageTranslatable(LanguageString.SPAWN, true);
+
+        // Send success message to sender
+        if (!onSelf)
+            player.messageTranslatable(
+                    LanguageString.SPAWN_REMOTE,
+                    true,
+                    entry("player", target.getUsername())
+            );
+    }
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/survival/HomeCommand.java

@@ -66,7 +66,7 @@ public final class HomeCommand extends Command {
                 new String[]{ "home", "bed", "spawnpoint", "sp" },
                 "",
                 "",
-                "survival",
+                new String[]{ "survival" },
                 null,
                 ExecutionTarget.CONSOLE_PARTIAL
         ), "home");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/survivalcheat/FeedCommand.java

@@ -66,7 +66,7 @@ public final class FeedCommand extends Command {
                 new String[]{ "feed" },
                 "",
                 "",
-                "survivalcheat",
+                new String[]{ "survivalcheat" },
                 null,
                 ExecutionTarget.CONSOLE_PARTIAL
         ), "feed");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/survivalcheat/HealCommand.java

@@ -73,7 +73,7 @@ public final class HealCommand extends Command {
                 new String[]{ "heal" },
                 "",
                 "",
-                "survivalcheat",
+                new String[]{ "survivalcheat" },
                 null,
                 ExecutionTarget.CONSOLE_PARTIAL
         ), "heal");

extension/src/main/java/de/jeremystartm/pickshadow/extension/command/survivalcheat/ToggleDownfallCommand.java

@@ -63,7 +63,7 @@ public final class ToggleDownfallCommand extends Command {
                 new String[]{ "toggledownfall" },
                 "",
                 "",
-                "survivalcheat",
+                new String[]{ "survivalcheat" },
                 null,
                 ExecutionTarget.PLAYERS_ONLY
         ), "toggledownfall");

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementable/ServerMode.java

@@ -0,0 +1,372 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.implementable;
+
+import de.jeremystartm.pickshadow.extension.ExtensionConfiguration;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
+import de.staropensource.engine.base.logging.Logger;
+import io.papermc.paper.event.block.BlockBreakProgressUpdateEvent;
+import lombok.Getter;
+import org.bukkit.Bukkit;
+import org.bukkit.GameRule;
+import org.bukkit.World;
+import org.bukkit.entity.Entity;
+import org.bukkit.event.block.*;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+/**
+ * Abstract class for creating classes handling different server modes.
+ *
+ * @see ExtensionConfiguration#getEnabledModes()
+ * @since v1-release0
+ */
+@SuppressWarnings({ "unused", "JavadocDeclaration" })
+public abstract class ServerMode {
+    /**
+     * Contains a list of all initialized modes.
+     *
+     * @since v1-release0
+     */
+    private static final @NotNull List<@NotNull ServerMode> initializedModes = new ArrayList<>();
+
+    /**
+     * Contains if {@link #getInitializedModes(boolean)}
+     * should return an empty list. This will
+     * effectively disable any code working
+     * with server modes.
+     *
+     * @since v1-release0
+     */
+    public static boolean disableModes = false;
+
+    /**
+     * Contains the name of this mode.
+     *
+     * @since v1-release0
+     * -- GETTER --
+     * Returns the name of this mode.
+     *
+     * @return mode name
+     * @since v1-release0
+     */
+    @Getter
+    private final @NotNull String name;
+
+    /**
+     * Contains a map containing the
+     * original values for changed
+     * game rules modified by the
+     * implementing server mode.
+     *
+     * @since v1-release0
+     */
+    private final @NotNull Map<@NotNull World, @NotNull Map<@NotNull GameRule<?>, @NotNull Object>> originalGameRules = new HashMap<>();
+
+    /**
+     * Contains the currently processed {@link World}.
+     *
+     * @since v1-release0
+     */
+    private @Nullable World currentWorld;
+
+
+    // -----> Mode management
+    public static @NotNull List<@NotNull ServerMode> getInitializedModes(boolean force) {
+        if (!force && disableModes)
+            return Collections.emptyList();
+        else
+            return Collections.unmodifiableList(initializedModes);
+    }
+
+    /**
+     * Initializes this abstract class.
+     *
+     * @since v1-release0
+     */
+    protected ServerMode(@NotNull String name) {
+        this.name = name;
+    }
+
+    /**
+     * Initializes this server mode.
+     *
+     * @throws Exception on error
+     * @since v1-release0
+     */
+    public void initialize() throws Exception {
+        Logger.verb("Initializing mode " + getName());
+
+        // Bootstrap mode
+        Logger.diag("Bootstrapping mode " + getName());
+        bootstrap();
+
+        // Configure all worlds
+        Logger.diag("Configuring worlds for mode " + getName());
+        for (World world : Bukkit.getWorlds()) {
+            currentWorld = world;
+            configureWorld(world);
+        }
+
+        // Finish initialization
+        Logger.diag("Finishing initialization for mode " + getName());
+        currentWorld = null;
+        initializedModes.add(this);
+    }
+
+    /**
+     * Uninitializes this server mode.
+     *
+     * @throws Exception on error
+     * @since v1-release0
+     */
+    public void unwind() throws Exception {
+        shutdown();
+
+        // Reset all game rules to their original values
+        for (World world : originalGameRules.keySet())
+            for (GameRule<?> gameRule : originalGameRules.get(world).keySet())
+                world.setGameRule((GameRule<? super Object>) gameRule, originalGameRules.get(world).get(gameRule));
+    }
+
+
+    // -----> Mode management
+    /**
+     * Bootstraps this server mode.
+     *
+     * @throws Exception on error
+     * @since v1-release0
+     */
+    protected abstract void bootstrap() throws Exception;
+
+    /**
+     * Shuts this server mode down.
+     *
+     * @throws Exception on error
+     * @since v1-release0
+     */
+    protected abstract void shutdown() throws Exception;
+
+
+    // -----> Startup tasks
+    /**
+     * Configures the specified world.
+     * <p>
+     * Called only during mode initialization.
+     *
+     * @param world world to configure
+     * @since v1-release0
+     */
+    protected void configureWorld(@NotNull World world) {}
+
+
+    // -----> Tick updates
+    /**
+     * Updates the specified world.
+     * <p>
+     * Called every tick.
+     *
+     * @param world world to update
+     * @since v1-release0
+     */
+    public void updateWorld(@NotNull World world) {}
+
+    /**
+     * Updates the specified player.
+     * <p>
+     * Called every tick.
+     *
+     * @param player player to update
+     * @since v1-release0
+     */
+    public void updatePlayer(@NotNull PSPlayer player) {}
+
+
+    // -----> Player events
+    /**
+     * Handles the specified joining player.
+     *
+     * @param player player which joined
+     * @since v1-release0
+     */
+    public void handlePlayerJoin(@NotNull PSPlayer player) {}
+
+    /**
+     * Handles the specified leaving player.
+     *
+     * @param player player which left
+     * @since v1-release0
+     */
+    public void handlePlayerLeave(@NotNull PSPlayer player) {}
+
+    /**
+     * Handles the specified player respawning.
+     *
+     * @param player player which respawned
+     * @since v1-release0
+     */
+    public void handlePlayerRespawn(@NotNull PSPlayer player) {}
+
+    /**
+     * Handles the specified player interacting with something.
+     *
+     * @param player player which respawned
+     * @param event  event information
+     * @since v1-release0
+     */
+    public void handlePlayerInteract(@NotNull PSPlayer player, @NotNull PlayerInteractEvent event) {}
+
+
+    // -----> Block placements
+    /**
+     * Handles a block being placed in some world.
+     *
+     * @param player player which placed a block
+     * @param event  event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockPlace(@NotNull PSPlayer player, @NotNull BlockPlaceEvent event) {}
+
+
+    // -----> Block updates
+    /**
+     * Handles a block being updated in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockUpdate(@NotNull BlockCookEvent event) {}
+
+    /**
+     * Handles a block being updated in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockUpdate(@NotNull BlockDispenseEvent event) {}
+
+    /**
+     * Handles a block being updated in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockUpdate(@NotNull BlockRedstoneEvent event) {}
+
+    /**
+     * Handles a block being updated in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockUpdate(@NotNull BlockPistonEvent event) {}
+
+    /**
+     * Handles a block being updated in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockUpdate(@NotNull BlockExpEvent event) {}
+
+
+    // -----> Block damage
+    /**
+     * Handles a block being placed in some world.
+     *
+     * @param event event information
+     */
+    public void handleWorldBlockDamage(@NotNull BlockBreakProgressUpdateEvent event) {}
+
+    /**
+     * Handles a block being placed in some world.
+     *
+     * @param event event information
+     */
+    public void handleWorldBlockDamage(@NotNull BlockBreakEvent event) {}
+
+    /**
+     * Handles a block being damaged in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockDamage(@NotNull BlockExplodeEvent event) {}
+
+    /**
+     * Handles a block being damaged in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockDamage(@NotNull BlockDamageEvent event) {}
+
+    /**
+     * Handles a block being damaged in some world.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    public void handleWorldBlockDamage(@NotNull BlockBurnEvent event) {}
+
+
+    // -----> Utility methods
+    /**
+     * Updates the specified game rule
+     * for the current world safely.
+     * <p>
+     * Using this command to update game rules
+     * allows PSSE to be reset all modified
+     * rules to their original values during
+     * server mode deactivation/server shutdown.
+     * <p>
+     * This method only works during the
+     * mode initialization process.
+     *
+     * @param <T>      value type
+     * @param gameRule game rule to change
+     * @param value    value to change the game rule to
+     * @since v1-release0
+     */
+    public <T> @NotNull ServerMode setGameRule(@NotNull GameRule<T> gameRule, @NotNull T value) {
+        if (currentWorld == null)
+            return this;
+
+        // Get old value
+        T oldValue = currentWorld.getGameRuleValue(gameRule);
+        if (oldValue == null)
+            oldValue = currentWorld.getGameRuleDefault(gameRule);
+        if (oldValue == null) {
+            Logger.crash("Unable to get old game rule value for '" + gameRule.getName() + "' for world '" + currentWorld.getName() + "'");
+            return this;
+        }
+
+        // Set old value
+        originalGameRules.putIfAbsent(currentWorld, new HashMap<>());
+        originalGameRules.get(currentWorld).putIfAbsent(gameRule, oldValue);
+
+        // Set game rule
+        currentWorld.setGameRule(gameRule, value);
+        return this;
+    }
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementable/package-info.java

@@ -0,0 +1,25 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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-release0
+ */
+package de.jeremystartm.pickshadow.extension.implementable;

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementation/mode/GeneralMode.java

@@ -0,0 +1,60 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.implementation.mode;
+
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import org.bukkit.GameRule;
+import org.bukkit.World;
+import org.jetbrains.annotations.NotNull;
+
+import java.time.LocalTime;
+
+/**
+ * Handles the {@code general} server mode.
+ *
+ * @since v1-release0
+ */
+public final class GeneralMode extends ServerMode {
+    /**
+     * Creates and initializes an
+     * instance of this class.
+     *
+     * @since v1-release0
+     */
+    public GeneralMode() {
+        super("general");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void bootstrap() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void shutdown() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void configureWorld(@NotNull World world) {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void updateWorld(@NotNull World world) {}
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementation/mode/HubMode.java

@@ -0,0 +1,186 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.implementation.mode;
+
+import de.jeremystartm.pickshadow.extension.BuildOptions;
+import de.jeremystartm.pickshadow.extension.ExtensionConfiguration;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import de.jeremystartm.pickshadow.extension.misc.Miscellaneous;
+import org.bukkit.GameMode;
+import org.bukkit.GameRule;
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.damage.DamageSource;
+import org.bukkit.damage.DamageType;
+import org.bukkit.event.block.*;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.jetbrains.annotations.NotNull;
+
+import java.time.LocalTime;
+
+/**
+ * Handles the {@code hub} server mode.
+ *
+ * @since v1-release0
+ */
+public final class HubMode extends ServerMode {
+    /**
+     * Creates and initializes an
+     * instance of this class.
+     *
+     * @since v1-release0
+     */
+    public HubMode() {
+        super("hub");
+    }
+
+
+    // -----> Mode management
+    /** {@inheritDoc} */
+    @Override
+    public void bootstrap() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void shutdown() {}
+
+
+    // -----> Startup tasks
+    /** {@inheritDoc} */
+    @Override
+    public void configureWorld(@NotNull World world) {
+        this
+                .setGameRule(GameRule.ANNOUNCE_ADVANCEMENTS, false)
+                .setGameRule(GameRule.DO_DAYLIGHT_CYCLE, false)
+                .setGameRule(GameRule.DO_FIRE_TICK, false)
+                .setGameRule(GameRule.DO_IMMEDIATE_RESPAWN, true)
+                .setGameRule(GameRule.DO_MOB_SPAWNING, false)
+                .setGameRule(GameRule.DO_TRADER_SPAWNING, false)
+                .setGameRule(GameRule.DO_VINES_SPREAD, false)
+                .setGameRule(GameRule.DO_WARDEN_SPAWNING, false)
+                .setGameRule(GameRule.DO_WEATHER_CYCLE, false)
+                .setGameRule(GameRule.DROWNING_DAMAGE, false)
+                .setGameRule(GameRule.FALL_DAMAGE, false)
+                .setGameRule(GameRule.FIRE_DAMAGE, false)
+                .setGameRule(GameRule.FREEZE_DAMAGE, false)
+                .setGameRule(GameRule.SHOW_DEATH_MESSAGES, false)
+                .setGameRule(GameRule.SPAWN_RADIUS, 0)
+                .setGameRule(GameRule.SPECTATORS_GENERATE_CHUNKS, false);
+    }
+
+
+    // -----> Tick updates
+    /** {@inheritDoc} */
+    @Override
+    public void updateWorld(@NotNull World world) {
+        // Translate real world time to in-game time
+        world.setTime(Miscellaneous.translateTime(LocalTime.now(BuildOptions.SETTINGS_CLOCK)));
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void updatePlayer(@NotNull PSPlayer player) {
+        Location location = player.getLocation();
+
+        if (location.getBlockY() < 0)
+            //noinspection UnstableApiUsage
+            player.kill(DamageSource.builder(DamageType.OUT_OF_WORLD).withDamageLocation(location).build());
+
+    }
+
+
+    // -----> Player events
+    /** {@inheritDoc} */
+    @Override
+    public void handlePlayerJoin(@NotNull PSPlayer player) {
+        handlePlayerRespawn(player);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handlePlayerRespawn(@NotNull PSPlayer player) {
+        player.teleport(ExtensionConfiguration.getInstance().getSpawnLocation());
+        player.setGamemode(GameMode.ADVENTURE);
+    }
+
+
+    // -----> Block placements
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockPlace(@NotNull PSPlayer player, @NotNull BlockPlaceEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    public void handlePlayerInteract(@NotNull PSPlayer player, @NotNull PlayerInteractEvent event) {
+        event.setCancelled(true);
+    }
+
+
+    // -----> Block updates
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockUpdate(@NotNull BlockCookEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockUpdate(@NotNull BlockDispenseEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockUpdate(@NotNull BlockPistonEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockUpdate(@NotNull BlockExpEvent event) {}
+
+
+    // -----> Block damage
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockDamage(@NotNull BlockBreakEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockDamage(@NotNull BlockExplodeEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockDamage(@NotNull BlockDamageEvent event) {
+        event.setCancelled(true);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void handleWorldBlockDamage(@NotNull BlockBurnEvent event) {
+        event.setCancelled(true);
+    }
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementation/mode/SurvivalCheatMode.java

@@ -0,0 +1,57 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.implementation.mode;
+
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import org.bukkit.World;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Handles the {@code survivalcheat} server mode.
+ *
+ * @since v1-release0
+ */
+public final class SurvivalCheatMode extends ServerMode {
+    /**
+     * Creates and initializes an
+     * instance of this class.
+     *
+     * @since v1-release0
+     */
+    public SurvivalCheatMode() {
+        super("survivalcheat");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void bootstrap() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void shutdown() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void configureWorld(@NotNull World world) {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void updateWorld(@NotNull World world) {}
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementation/mode/SurvivalMode.java

@@ -0,0 +1,57 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.implementation.mode;
+
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import org.bukkit.World;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Handles the {@code survival} server mode.
+ *
+ * @since v1-release0
+ */
+public final class SurvivalMode extends ServerMode {
+    /**
+     * Creates and initializes an
+     * instance of this class.
+     *
+     * @since v1-release0
+     */
+    public SurvivalMode() {
+        super("survival");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void bootstrap() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void shutdown() {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void configureWorld(@NotNull World world) {}
+
+    /** {@inheritDoc} */
+    @Override
+    public void updateWorld(@NotNull World world) {}
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementation/mode/package-info.java

@@ -0,0 +1,25 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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 handling different server modes.
+ *
+ * @since v1-release0
+ */
+package de.jeremystartm.pickshadow.extension.implementation.mode;

extension/src/main/java/de/jeremystartm/pickshadow/extension/implementation/package-info.java

@@ -0,0 +1,25 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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/>.
+ */
+
+/**
+ * Implementations for various interfaces and abstract classes.
+ *
+ * @since v1-release0
+ */
+package de.jeremystartm.pickshadow.extension.implementation;

extension/src/main/java/de/jeremystartm/pickshadow/extension/listener/ChatListener.java

@@ -20,6 +20,7 @@
 package de.jeremystartm.pickshadow.extension.listener;
 
 import de.jeremystartm.pickshadow.extension.BuildOptions;
+import de.jeremystartm.pickshadow.extension.Extension;
 import de.jeremystartm.pickshadow.extension.api.command.Command;
 import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
 import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayerFactory;
@@ -30,6 +31,7 @@ import de.jeremystartm.pickshadow.extension.command.general.replacement.ReloadCo
 import de.staropensource.engine.base.logging.Logger;
 import io.papermc.paper.event.player.AsyncChatEvent;
 import net.kyori.adventure.text.minimessage.MiniMessage;
+import org.bukkit.Bukkit;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -51,6 +53,7 @@ public final class ChatListener implements Listener {
      * @since v1-release0
      */
     private static final @NotNull PluginsCommand pluginsCommand = new PluginsCommand();
+
     /**
      * Contains a static instance of
      * the {@link ReloadCommand} class.
@@ -59,6 +62,17 @@ public final class ChatListener implements Listener {
      */
     private static final @NotNull ReloadCommand reloadCommand = new ReloadCommand();
 
+    /**
+     * Creates and initializes
+     * an instance of this class.
+     *
+     * @since v1-release0
+     */
+    public ChatListener() {
+        Bukkit.getPluginManager().registerEvent(AsyncChatEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleChatMessage((AsyncChatEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(PlayerCommandPreprocessEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleChatCommand((PlayerCommandPreprocessEvent) event), Extension.getInstance(), true);
+    }
+
     /**
      * Handles chat messages.
      *

extension/src/main/java/de/jeremystartm/pickshadow/extension/listener/ConnectionListener.java

@@ -26,13 +26,12 @@ import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayerFactory;
 import de.jeremystartm.pickshadow.extension.api.translation.LanguageString;
 import de.jeremystartm.pickshadow.extension.api.translation.TranslationManager;
 import de.jeremystartm.pickshadow.extension.command.general.ClearChatCommand;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
 import de.jeremystartm.pickshadow.extension.misc.Scheduler;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.MiniMessage;
 import org.bukkit.Bukkit;
-import org.bukkit.event.EventHandler;
+import org.bukkit.event.*;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerKickEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
@@ -43,9 +42,21 @@ import static java.util.Map.entry;
 /**
  * Listens on joins and disconnects.
  *
+ * @see PlayerEventListener
  * @since v1-release0
  */
 public final class ConnectionListener implements Listener {
+    /**
+     * Creates and initializes
+     * an instance of this class.
+     *
+     * @since v1-release0
+     */
+    public ConnectionListener() {
+        Bukkit.getPluginManager().registerEvent(PlayerJoinEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handlePlayerJoinEarly((PlayerJoinEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(PlayerQuitEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handlePlayerLeave((PlayerQuitEvent) event), Extension.getInstance(), true);
+    }
+
     /**
      * Handles player joins early.
      *
@@ -83,6 +94,7 @@ public final class ConnectionListener implements Listener {
             event.getPlayer().kick(MiniMessage.miniMessage().deserialize(TranslationManager.get(LanguageString.CONNECTION_ERROR_REGISTRATION, event.getPlayer(), false)), PlayerKickEvent.Cause.UNKNOWN);
         }
     }
+
     /**
      * Handles player joins late.
      *
@@ -98,6 +110,9 @@ public final class ConnectionListener implements Listener {
                 entry("player", player.getUsername()),
                 entry("minecraftVersion", Bukkit.getMinecraftVersion())
         );
+
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handlePlayerJoin(player));
     }
 
     /**
@@ -110,6 +125,9 @@ public final class ConnectionListener implements Listener {
     private void handlePlayerLeave(@NotNull PlayerQuitEvent event) {
         PSPlayer player = PSPlayerFactory.get(event.getPlayer());
 
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handlePlayerLeave(player));
+
         // Empty quit message
         event.quitMessage(Component.empty());
 

extension/src/main/java/de/jeremystartm/pickshadow/extension/listener/PlayerEventListener.java

@@ -0,0 +1,80 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.listener;
+
+import de.jeremystartm.pickshadow.extension.Extension;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayerFactory;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import org.bukkit.Bukkit;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.event.player.PlayerRespawnEvent;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Listens on various player events.
+ *
+ * @see ConnectionListener
+ * @see WorldEventListener
+ * @since v1-release0
+ */
+public final class PlayerEventListener implements Listener {
+    /**
+     * Creates and initializes
+     * an instance of this class.
+     *
+     * @since v1-release0
+     */
+    public PlayerEventListener() {
+        Bukkit.getPluginManager().registerEvent(PlayerRespawnEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handlePlayerRespawn((PlayerRespawnEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(PlayerInteractEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handlePlayerInteraction((PlayerInteractEvent) event), Extension.getInstance(), true);
+    }
+
+    /**
+     * Handles player respawns.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handlePlayerRespawn(@NotNull PlayerRespawnEvent event) {
+        PSPlayer player = PSPlayerFactory.get(event.getPlayer());
+
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handlePlayerRespawn(player));
+    }
+
+    /**
+     * Handles player respawns.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handlePlayerInteraction(@NotNull PlayerInteractEvent event) {
+        PSPlayer player = PSPlayerFactory.get(event.getPlayer());
+
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handlePlayerInteract(player, event));
+    }
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/listener/WorldEventListener.java

@@ -0,0 +1,199 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.listener;
+
+import de.jeremystartm.pickshadow.extension.Extension;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
+import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayerFactory;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
+import io.papermc.paper.event.block.BlockBreakProgressUpdateEvent;
+import org.bukkit.Bukkit;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.*;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Listens on various world events.
+ *
+ * @see PlayerEventListener
+ * @since v1-release0
+ */
+public final class WorldEventListener implements Listener {
+    /**
+     * Creates and initializes
+     * an instance of this class.
+     *
+     * @since v1-release0
+     */
+    public WorldEventListener() {
+        Bukkit.getPluginManager().registerEvent(BlockPlaceEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockPlace((BlockPlaceEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockCookEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockUpdate((BlockCookEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockDispenseEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockUpdate((BlockDispenseEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockRedstoneEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockUpdate((BlockRedstoneEvent) event), Extension.getInstance(), true);
+        //Bukkit.getPluginManager().registerEvent(BlockPistonEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockUpdate((BlockPistonEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockExpEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockUpdate((BlockExpEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockBreakProgressUpdateEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockDamage((BlockBreakProgressUpdateEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockBreakEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockDamage((BlockBreakEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockExplodeEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockDamage((BlockExplodeEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockDamageEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockDamage((BlockDamageEvent) event), Extension.getInstance(), true);
+        Bukkit.getPluginManager().registerEvent(BlockBurnEvent.class, this, EventPriority.HIGHEST, (listener, event) -> handleBlockDamage((BlockBurnEvent) event), Extension.getInstance(), true);
+    }
+
+    // -----> Block placements
+    /**
+     * Handles block placements.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockPlace(@NotNull BlockPlaceEvent event) {
+        PSPlayer player = PSPlayerFactory.get(event.getPlayer());
+
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockPlace(player, event));
+    }
+
+
+    // -----> Block updates
+    /**
+     * Handles block cooks.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockUpdate(@NotNull BlockCookEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockUpdate(event));
+    }
+
+    /**
+     * Handles block dispenses.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockUpdate(@NotNull BlockDispenseEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockUpdate(event));
+    }
+
+    /**
+     * Handles block explosions.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockUpdate(@NotNull BlockRedstoneEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockUpdate(event));
+    }
+
+    /**
+     * Handles block explosions.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockUpdate(@NotNull BlockPistonEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockUpdate(event));
+    }
+
+    /**
+     * Handles block experience.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockUpdate(@NotNull BlockExpEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockUpdate(event));
+    }
+
+
+    // -----> Block damage
+    /**
+     * Handles block break progress.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockDamage(@NotNull BlockBreakProgressUpdateEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockDamage(event));
+    }
+
+    /**
+     * Handles block breaks.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockDamage(@NotNull BlockBreakEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockDamage(event));
+    }
+
+    /**
+     * Handles block explosions.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockDamage(@NotNull BlockExplodeEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockDamage(event));
+    }
+
+    /**
+     * Handles block damage.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockDamage(@NotNull BlockDamageEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockDamage(event));
+    }
+
+    /**
+     * Handles block burns.
+     *
+     * @param event event information
+     * @since v1-release0
+     */
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    private void handleBlockDamage(@NotNull BlockBurnEvent event) {
+        // Call modes
+        ServerMode.getInitializedModes(false).forEach(mode -> mode.handleWorldBlockDamage(event));
+    }
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/misc/Miscellaneous.java

@@ -0,0 +1,54 @@
+/*
+ * PICKSHADOW SERVER KIT SOURCE FILE
+ * Copyright (c) 2024 The PickShadow Server Kit 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.jeremystartm.pickshadow.extension.misc;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.time.LocalTime;
+
+/**
+ * Translation real time to Minecraft time.
+ *
+ * @since v1-release0
+ */
+public final class Miscellaneous {
+    /**
+     * Translation real time to Minecraft time.
+     *
+     * @param localTime {@link LocalTime} instance
+     * @return Minecraft time
+     * @since v1-release0
+     */
+    public static long translateTime(@NotNull LocalTime localTime) {
+        long time = -6000L;
+
+        // Translate hours, minutes & seconds
+        time += localTime.getHour() * 1000;
+        time += localTime.getMinute() * 2 * 10;
+        time += (localTime.getSecond() - localTime.getSecond() % 10) / 10 * 2;
+
+        // Limit numbers
+        // Prevent negative numbers
+        if (time < 0)
+            time = 24000 + time;
+
+        return time;
+    }
+}

extension/src/main/java/de/jeremystartm/pickshadow/extension/misc/Scheduler.java

@@ -23,6 +23,7 @@ import de.jeremystartm.pickshadow.extension.BuildOptions;
 import de.jeremystartm.pickshadow.extension.Extension;
 import de.jeremystartm.pickshadow.extension.api.entity.player.PSPlayer;
 import de.jeremystartm.pickshadow.extension.api.translation.LanguageString;
+import de.jeremystartm.pickshadow.extension.implementable.ServerMode;
 import de.staropensource.engine.base.logging.Logger;
 import io.papermc.paper.threadedregions.scheduler.ScheduledTask;
 import net.luckperms.api.util.Tristate;
@@ -68,6 +69,8 @@ public final class Scheduler {
      */
     public static void world(@NotNull World world) {
         try {
+            for (ServerMode mode : ServerMode.getInitializedModes(false))
+                mode.updateWorld(world);
             killBats(world);
         } catch (Exception exception) {
             Logger.crash("World scheduler failed for '" + world.getName() + "'", exception);
@@ -88,6 +91,9 @@ public final class Scheduler {
             // Apply damage
             DamageDetection.apply(player);
 
+            // Call modes
+            ServerMode.getInitializedModes(false).forEach(mode -> mode.updatePlayer(player));
+
             // Reschedule
             player.schedule(() -> player(player), 1L);
         } catch (Exception exception) {

extension/src/main/resources/plugin.yml

@@ -5,11 +5,13 @@ description: "Manages PickShadow's subservers"
 author: "PickShadow Server Extension Authors"
 website: "https://git.staropensource.de/JeremyStarTM/PickShadow"
 api-version: "${minecraftApi}"
-load: POSTWORLD
+load: "POSTWORLD"
 prefix: "PSSE"
 depend:
   - "sosenginemc"
   - "LuckPerms"
+loadbefore:
+  - "WorldGuard"
 
 commands:
   # General
@@ -32,7 +34,7 @@ commands:
   # -> ExtensionCommand
   psse:
     description: "Interface for players and administrators to PSSE and the PickShadow network."
-    usage: "/psse <license|source|killjvm>"
+    usage: "/psse <license|source|modes|disableModes|killjvm>"
     aliases:
       - pickshadow
       - server
@@ -126,6 +128,14 @@ commands:
       - rl
 
 
+  # Multi-mode
+  # -> SpawnCommand
+  spawn:
+    description: "Teleports the specified player to spawn."
+    usage: "/spawn"
+    aliases: []
+
+
   # Survival
   # -> HomeCommand
   home:
@@ -242,6 +252,13 @@ permissions:
     default: false
 
 
+  # Multi-mode
+  # -> SpawnCommand
+  pickshadow.command.spawn:
+    description: "Provides access to the '/spawn' command."
+    default: false
+
+
   # -> Survival
   # --> HomeCommand
   pickshadow.command.home:

extension/src/main/resources/translations/de.json

@@ -17,10 +17,15 @@
   "CONNECTION_ERROR_TABLISTHANDLER": "<error>Der TabListHandler schlug unerwartet fehl</error>",
   "CONNECTION_ERROR_SCHEDULER": "<error>Der Player Scheduler schlug unerwartet fehl</error>",
 
-  "EXTENSIONCMD_GREETER": "<generic>Dieser Subserver läuft <#d60532><bold>PSSE</bold> \"<italic>%codename%</italic>\" <italic>@ %version% (%commit%, dirty %dirty%)</italic></generic>\n<generic>Führe ein paar Subbefehle aus um mehr Informationen einzusehen.</generic>",
+  "EXTENSIONCMD": "<generic>Dieser Subserver läuft <#d60532><bold>PSSE</bold> \"<italic>%codename%</italic>\" <italic>@ %version% (%commit%, dirty %dirty%)</italic></generic>\n<generic>Führe ein paar Subbefehle aus um mehr Informationen einzusehen.</generic>",
-  "EXTENSIONCMD_KILLJVM": "<generic>Bye bye!</generic>",
   "EXTENSIONCMD_LICENSE": "<generic>PSSE ist lizensiert unter der <click:open_url:%license_url%><link>%license%</link></click>.</generic>",
   "EXTENSIONCMD_SOURCE": "<generic>Du kannst PickShadow's serverseitigen Code auf <click:open_url:%source%><link>sos!git</link></click> finden.</generic>",
+  "EXTENSIONCMD_MODES": "<generic>Dieser Subserver hat die folgenden Modi aktiviert: <mention>%modes%</mention></generic>",
+  "EXTENSIONCMD_MODES_ENABLE": "<generic>Alle Modi wurden <mention>aktiviert</mention>.</generic>",
+  "EXTENSIONCMD_MODES_DISABLE": "<generic>Alle Modi wurden <mention>deaktiviert</mention>.</generic>",
+  "EXTENSIONCMD_KILLJVM": "<generic>Bye bye!</generic>",
+  "EXTENSIONCMD_INTERNAL_DEVELOPMENTMODE": "<error><mention>%mode%</mention> ist in Entwicklung und wird bald verfügbar sein, tut uns leid.</error>",
+  "EXTENSIONCMD_INTERNAL_SENDTOSERVER": "<generic>Sende dich nach <mention>%server%</mention>...</generic>",
 
   "LEGACYEXTENSIONCMD": "<error>Was ist <mention>PSSP</mention>...?</error>\n<error>Das PickShadow Server Plugin (PSSP) wurde in PickShadow Server <italic>Extension</italic> (PSSE) umbenannt.</error>\n<error>Bitte verwende diesen Namen stattdessen, vielen Dank.</error>",
 
@@ -82,5 +87,8 @@
   "SPEED_FLY": "Fluggeschwindigkeit",
   "SPEED_WALK": "Laufgeschwindigkeit",
 
+  "SPAWN": "<generic>Du wurdest zum Spawn teleportiert.",
+  "SPAWN_REMOTE": "<generic><mention>%player%</mention> wurde zum Spawn teleportiert.",
+
   "CHATCOMMAND_ERROR_NAMESPACE": "<error>Namespaces zu verwenden ist nicht erlaubt, da es verwendet werden kann um Sicherheitsmaßnahmen zu umgehen.</error>"
 }

extension/src/main/resources/translations/en.json

@@ -29,10 +29,15 @@
   "CONNECTION_ERROR_TABLISTHANDLER": "<error>The TabListHandler failed unexpectedly</error>",
   "CONNECTION_ERROR_SCHEDULER": "<error>The player scheduler failed unexpectedly</error>",
 
-  "EXTENSIONCMD_GREETER": "<generic>This subserver is running <#d60532><bold>PSSE</bold> \"<italic>%codename%</italic>\" <italic>@ %version% (%commit%, dirty %dirty%)</italic></generic>\n<generic>To view additional information, invoke some subcommands.</generic>",
+  "EXTENSIONCMD": "<generic>This subserver is running <#d60532><bold>PSSE</bold> \"<italic>%codename%</italic>\" <italic>@ %version% (%commit%, dirty %dirty%)</italic></generic>\n<generic>To view additional information, invoke some subcommands.</generic>",
-  "EXTENSIONCMD_KILLJVM": "<generic>Bye bye!</generic>",
   "EXTENSIONCMD_LICENSE": "<generic>PSSE is licensed under the <click:open_url:%license_url%><link>%license%</link></click>.</generic>",
   "EXTENSIONCMD_SOURCE": "<generic>You can find the source code of PickShadow's server-side code on <click:open_url:%source%><link>sos!git</link></click>.</generic>",
+  "EXTENSIONCMD_MODES": "<generic>This subserver has the following modes enabled: <mention>%modes%</mention></generic>",
+  "EXTENSIONCMD_MODES_ENABLE": "<generic>All modes have been <mention>enabled</mention>.</generic>",
+  "EXTENSIONCMD_MODES_DISABLE": "<generic>All modes have been <mention>disabled</mention>.</generic>",
+  "EXTENSIONCMD_KILLJVM": "<generic>Bye bye!</generic>",
+  "EXTENSIONCMD_INTERNAL_DEVELOPMENTMODE": "<error><mention>%mode%</mention> is in development and will be available soon, sorry.</error>",
+  "EXTENSIONCMD_INTERNAL_SENDTOSERVER": "<generic>Sending you to <mention>%server%</mention>...</generic>",
 
   "LEGACYEXTENSIONCMD": "<error>What's <mention>PSSP</mention>...?</error>\n<error>The PickShadow Server <italic>Plugin</italic> (PSSP) has been renamed into PickShadow Server <italic>Extension</italic> (PSSE).</error>\n<error>Please use the new name from now on. Thank you.</error>",
 
@@ -101,5 +106,8 @@
   "SPEED_FLY": "fly speed",
   "SPEED_WALK": "walk speed",
 
+  "SPAWN": "<generic>You were teleported to spawn.",
+  "SPAWN_REMOTE": "<generic><mention>%player%</mention> has been teleported to spawn.",
+
   "CHATCOMMAND_ERROR_NAMESPACE": "<error>Using namespaces is not allowed, as it may be used to circumvent security measures.</error>"
 }