Add support for disabling/enabling the plugin

And autostart can be disabled too

VirtualComputer-Core/src/main/java/sznp/virtualcomputer/Computer.java

@@ -364,5 +364,6 @@ public final class Computer {
 			}
 			session.unlockMachine();
 		}
+		instance = null; //Allow setting it again
 	}
 }

VirtualComputer-Core/src/main/java/sznp/virtualcomputer/ComputerCommand.java

@@ -2,6 +2,7 @@ package sznp.virtualcomputer;
 
 import buttondevteam.lib.chat.Command2;
 import buttondevteam.lib.chat.CommandClass;
+import buttondevteam.lib.chat.CustomTabComplete;
 import buttondevteam.lib.chat.ICommand2MC;
 import lombok.var;
 import net.md_5.bungee.api.ChatColor;
@@ -30,6 +31,7 @@ import java.util.Objects;
 public class ComputerCommand extends ICommand2MC {
 	@Command2.Subcommand
 	public void status(CommandSender sender) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().Status(sender);
 	}
 
@@ -39,36 +41,43 @@ public class ComputerCommand extends ICommand2MC {
 			"Use /c list to see the index of the machines."
 	})
 	public void start(CommandSender sender, @Command2.OptionalArg int index) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().Start(sender, index);
 	}
 
 	@Command2.Subcommand
 	public void list(CommandSender sender) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().List(sender);
 	}
 
 	@Command2.Subcommand(aliases = {"poweroff", "off", "kill"})
 	public void stop(CommandSender sender) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().Stop(sender);
 	}
 
 	@Command2.Subcommand(aliases = {"powerbtn", "pwrbtn"})
 	public void powerbutton(CommandSender sender, @Command2.OptionalArg int index) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().PowerButton(sender, index);
 	}
 
 	@Command2.Subcommand(aliases = "restart")
 	public void reset(CommandSender sender) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().Reset(sender);
 	}
 
 	@Command2.Subcommand(aliases = "save state")
 	public void save(CommandSender sender) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().SaveState(sender);
 	}
 
 	@Command2.Subcommand(aliases = "fix screen")
 	public void fix(CommandSender sender) {
+		if (checkDisabled(sender)) return;
 		Computer.getInstance().FixScreen(sender);
 	}
 
@@ -77,6 +86,7 @@ public class ComputerCommand extends ICommand2MC {
 			"Presses the specified key. Valid values for the last param are 'down', 'up' and amount of ticks to hold."
 	})
 	public void key(CommandSender sender, String key, @Command2.OptionalArg String stateorduration) {
+		if (checkDisabled(sender)) return;
 		if (stateorduration == null) stateorduration = "";
 		Computer.getInstance().PressKey(sender, key, stateorduration);
 	}
@@ -86,6 +96,7 @@ public class ComputerCommand extends ICommand2MC {
 			"Move the mouse by the specified offset or press the given button."
 	})
 	public void mouse(CommandSender sender, String keyOrX, @Command2.OptionalArg int y, @Command2.OptionalArg int z, @Command2.OptionalArg int w) {
+		if (checkDisabled(sender)) return;
 		try {
 			if (y != 0 || z != 0 || w != 0) {
 				int x = Integer.parseInt(keyOrX);
@@ -139,6 +150,7 @@ public class ComputerCommand extends ICommand2MC {
 			"Locks the mouse to where you're looking. If you move your mouse, the computer's mouse will be moved."
 	})
 	public void lock_mouse(Player player) {
+		if (checkDisabled(player)) return;
 		MouseLockerPlayerListener.toggleLock(player);
 	}
 
@@ -147,6 +159,7 @@ public class ComputerCommand extends ICommand2MC {
 			"Sets the mouse speed when locked. The default is 5."
 	})
 	public void lock_speed(CommandSender sender, float speed) {
+		if (checkDisabled(sender)) return;
 		MouseLockerPlayerListener.LockedSpeed = speed;
 		sender.sendMessage("§aMouse speed set to " + MouseLockerPlayerListener.LockedSpeed);
 	}
@@ -156,6 +169,7 @@ public class ComputerCommand extends ICommand2MC {
 			"Spawns a computer screen near you. All of them show the same thing."
 	})
 	public void spawn(Player player) {
+		if (checkDisabled(player)) return;
 		var loc = player.getLocation();
 		var world = Objects.requireNonNull(loc.getWorld());
 		short id = PluginMain.Instance.startID.get();
@@ -200,4 +214,34 @@ public class ComputerCommand extends ICommand2MC {
 			System.out.println("item: " + item);
 		}
 	}
+
+	@Command2.Subcommand(helpText = {
+			"Plugin enable/disable",
+			"Use this command to enable or disable the plugin.",
+			"This can be useful to save resources if it is unused."
+	})
+	public boolean plugin(CommandSender sender, @CustomTabComplete({"enable", "disable"}) String enableDisable) {
+		switch (enableDisable) {
+			case "enable":
+				sender.sendMessage("§bEnabling plugin...");
+				PluginMain.Instance.pluginEnableInternal();
+				sender.sendMessage("§bPlugin enabled! More info on console.");
+				break;
+			case "disable":
+				sender.sendMessage("§aDisabling plugin...");
+				PluginMain.Instance.pluginDisableInternal();
+				sender.sendMessage("§aPlugin disabled! More info on console.");
+				break;
+			default:
+				return false;
+		}
+		return true;
+	}
+
+	private boolean checkDisabled(CommandSender sender) {
+		boolean disabled = !PluginMain.isPluginEnabled();
+		if (disabled)
+			sender.sendMessage("The plugin is currently disabled. Do /c plugin enable to enable it.");
+		return disabled;
+	}
 }

VirtualComputer-Core/src/main/java/sznp/virtualcomputer/PluginMain.java

@@ -3,6 +3,7 @@ package sznp.virtualcomputer;
 import buttondevteam.lib.architecture.ButtonPlugin;
 import buttondevteam.lib.architecture.ConfigData;
 import jnr.ffi.LibraryLoader;
+import lombok.Getter;
 import lombok.val;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
@@ -28,6 +29,7 @@ public class PluginMain extends ButtonPlugin {
 	public static final int MCY = 4;
 	private BukkitTask mousetask;
 	private VBoxEventHandler listener;
+	private VirtualBoxManager manager;
 
 	public static PluginMain Instance;
 	/**
@@ -37,6 +39,8 @@ public class PluginMain extends ButtonPlugin {
 	private static final ArrayList<IRenderer> renderers = new ArrayList<>();
 	public static boolean direct;
 	public static boolean sendAll;
+	@Getter
+	private static boolean pluginEnabled; //The Bukkit plugin has to be enabled for the enable command to work
 
 	/**
 	 * The first map ID to use for the screen.
@@ -52,13 +56,28 @@ public class PluginMain extends ButtonPlugin {
 	 */
 	private final ConfigData<String> kbLayout = getIConfig().getData("kbLayout", "en");
 	public File layoutFolder = new File(getDataFolder(), "layouts");
+	/**
+	 * When set to false, the plugin will not initialize on server startup and its only valid command will be /c plugin enable.
+	 * This can be useful to save resources as the plugin keeps the VirtualBox interface running while enabled.
+	 */
+	private final ConfigData<Boolean> autoEnable = getIConfig().getData("autoEnable", true);
 
 	@Override
 	public void pluginEnable() {
+		registerCommand(new ComputerCommand());
+		if (autoEnable.get())
+			pluginEnableInternal();
+		else
+			getLogger().info("Auto-enable is disabled. Enable with /c plugin enable.");
+	}
+
+	void pluginEnableInternal() {
+		if (pluginEnabled)
+			return;
+		pluginEnabled = true;
 		Instance = this;
 		try {
 			ConsoleCommandSender ccs = getServer().getConsoleSender();
-			registerCommand(new ComputerCommand());
 			sendAll = getConfig().getBoolean("sendAll", true);
 			ccs.sendMessage("§bInitializing VirtualBox...");
 			String osname = System.getProperty("os.name").toLowerCase();
@@ -95,6 +114,7 @@ public class PluginMain extends ButtonPlugin {
 			IVirtualBox vbox = manager.getVBox();
 			(listener = new VBoxEventHandler()).registerTo(vbox.getEventSource());
 			new Computer(this, manager, vbox); //Saves itself
+			this.manager = manager;
 			ccs.sendMessage("§bLoading Screen...");
 			try {
 				if (useGPU.get())
@@ -140,6 +160,13 @@ public class PluginMain extends ButtonPlugin {
 
 	@Override
 	public void pluginDisable() {
+		pluginDisableInternal();
+	}
+
+	void pluginDisableInternal() {
+		if (!pluginEnabled)
+			return;
+		pluginEnabled = false;
 		ConsoleCommandSender ccs = getServer().getConsoleSender();
 		if (mousetask != null)
 			mousetask.cancel();
@@ -154,6 +181,8 @@ public class PluginMain extends ButtonPlugin {
 			Computer.getInstance().pluginDisable(ccs);
 		ccs.sendMessage("§aHuh.");
 		saveConfig();
+		renderers.clear();
+		manager.cleanup();
 	}
 
 }

VirtualComputer-Core/src/main/resources/plugin.yml

@@ -8,4 +8,4 @@ commands:
         aliases: c
 api-version: '1.13'
 depend:
-    - ChromaCore
+    - Chroma-Core

pom.xml

@@ -83,7 +83,7 @@
         <dependency>
             <groupId>com.github.TBMCPlugins.ChromaCore</groupId>
             <artifactId>Chroma-Core</artifactId>
-            <version>master-SNAPSHOT</version>
+            <version>v1.0.0</version>
         </dependency>
     </dependencies>