Add listener to globally disable specific blocks

pom.xml

@@ -30,6 +30,12 @@
             <version>1.19.2-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/org.jetbrains/annotations -->
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations</artifactId>
+            <version>23.0.0</version>
+        </dependency>
     </dependencies>
 
 </project>

src/main/java/wtf/beatrice/limbomanager/LimboManager.java

@@ -0,0 +1,38 @@
+package wtf.beatrice.limbomanager;
+
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.java.JavaPlugin;
+import wtf.beatrice.limbomanager.listeners.CommandCanceller;
+import wtf.beatrice.limbomanager.listeners.PlayerHider;
+import wtf.beatrice.limbomanager.listeners.RiskyBlocksHandler;
+
+public class LimboManager extends JavaPlugin {
+
+    private PluginManager pluginManager;
+    private static LimboManager instance;
+
+    @Override
+    public void onEnable()
+    {
+        instance = this;
+        pluginManager = Bukkit.getServer().getPluginManager();
+
+        pluginManager.registerEvents(new PlayerHider(), this);
+        pluginManager.registerEvents(new CommandCanceller(), this);
+        pluginManager.registerEvents(new RiskyBlocksHandler(), this);
+
+    }
+
+
+    @Override
+    public void onDisable()
+    {
+
+    }
+
+    public static LimboManager getInstance()
+    {
+        return instance;
+    }
+}

src/main/java/wtf/beatrice/limbomanager/Main.java

@@ -1,7 +0,0 @@
-package wtf.beatrice.limbomanager;
-
-public class Main {
-    public static void main(String[] args) {
-        System.out.println("Hello world!");
-    }
-}

src/main/java/wtf/beatrice/limbomanager/listeners/CommandCanceller.java

@@ -0,0 +1,16 @@
+package wtf.beatrice.limbomanager.listeners;
+
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerCommandPreprocessEvent;
+
+public class CommandCanceller implements Listener
+{
+
+    @EventHandler
+    public void onCommand(PlayerCommandPreprocessEvent event)
+    {
+        // block literally all commands (except from proxy ones)
+        event.setCancelled(true);
+    }
+}

src/main/java/wtf/beatrice/limbomanager/listeners/PlayerHider.java

@@ -0,0 +1,41 @@
+package wtf.beatrice.limbomanager.listeners;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import wtf.beatrice.limbomanager.LimboManager;
+
+public class PlayerHider implements Listener
+{
+
+
+    @EventHandler
+    public void onPlayerJoin(PlayerJoinEvent event)
+    {
+        // remove join msg
+        event.setJoinMessage(null);
+
+
+        LimboManager plugin = LimboManager.getInstance();
+        Player joiner = event.getPlayer();
+
+        // hide player from everyone
+
+
+
+        for(Player otherPlayer : Bukkit.getServer().getOnlinePlayers())
+        {
+            otherPlayer.hidePlayer(plugin, joiner);
+            joiner.hidePlayer(plugin, otherPlayer);
+        }
+    }
+
+    @EventHandler
+    public void onPlayerQuit(PlayerQuitEvent event)
+    {
+        event.setQuitMessage(null);
+    }
+}

src/main/java/wtf/beatrice/limbomanager/listeners/RiskyBlocksHandler.java

@@ -0,0 +1,93 @@
+package wtf.beatrice.limbomanager.listeners;
+
+import org.bukkit.Material;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.BlockMultiPlaceEvent;
+import org.bukkit.event.block.BlockPlaceEvent;
+import org.bukkit.event.inventory.*;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RiskyBlocksHandler implements Listener
+{
+    List<Material> riskyMaterials = new ArrayList<>()
+    {{
+        add(Material.TNT);
+        add(Material.ANVIL);
+        add(Material.CHIPPED_ANVIL);
+        add(Material.DAMAGED_ANVIL);
+        add(Material.MINECART);
+        add(Material.CHEST_MINECART);
+        add(Material.COMMAND_BLOCK_MINECART);
+        add(Material.HOPPER_MINECART);
+        add(Material.FURNACE_MINECART);
+        add(Material.TNT_MINECART);
+        add(Material.COMMAND_BLOCK);
+        add(Material.CHAIN_COMMAND_BLOCK);
+        add(Material.CHAIN_COMMAND_BLOCK);
+    }};
+
+
+    @EventHandler
+    public void onBlockPlace(BlockPlaceEvent event)
+    {
+        checkAndCancel(event, event.getBlockPlaced().getType());
+    }
+
+    @EventHandler
+    public void onBlockPlace(BlockMultiPlaceEvent event)
+    {
+        checkAndCancel(event, event.getBlockPlaced().getType());
+    }
+
+    @EventHandler
+    public void onInventoryClick(InventoryClickEvent event)
+    {
+        if(event.getCurrentItem() != null)
+        {
+            checkAndCancel(event, event.getCurrentItem().getType());
+        }
+
+        if(event.getCursor() != null)
+        {
+            checkAndCancel(event, event.getCursor().getType());
+        }
+    }
+
+    @EventHandler
+    public void onInventoryDrag(InventoryDragEvent event)
+    {
+        if(event.getCursor() != null)
+        {
+            checkAndCancel(event, event.getCursor().getType());
+        }
+
+        checkAndCancel(event, event.getOldCursor().getType());
+    }
+
+    @EventHandler
+    public void onInvMoveItem(InventoryMoveItemEvent event)
+    {
+        checkAndCancel(event, event.getItem().getType());
+    }
+
+
+    @EventHandler
+    public void onInvPickup(InventoryPickupItemEvent event)
+    {
+        checkAndCancel(event, event.getItem().getItemStack().getType());
+    }
+
+
+    private void checkAndCancel(Cancellable event, @NotNull Material material)
+    {
+        if(riskyMaterials.contains(material))
+        {
+            event.setCancelled(true);
+        }
+    }
+}

src/main/resources/plugin.yml

@@ -1,5 +1,5 @@
 name: LimboManager
-main: wtf.beatrice.limbomanager.Main
+main: wtf.beatrice.limbomanager.LimboManager
 version: 0.0.1
 description: Mix of tools to run a Limbo server
 api-version: 1.19