Add Map Copy Protection

paper/src/main/java/com/programmerdan/minecraft/simpleadminhacks/hacks/basic/MapCopyProtection.java

@@ -0,0 +1,126 @@
+package com.programmerdan.minecraft.simpleadminhacks.hacks.basic;
+
+import com.programmerdan.minecraft.simpleadminhacks.SimpleAdminHacks;
+import com.programmerdan.minecraft.simpleadminhacks.framework.BasicHack;
+import com.programmerdan.minecraft.simpleadminhacks.framework.BasicHackConfig;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.craftbukkit.v1_18_R2.inventory.CraftInventoryCrafting;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryType;
+import org.bukkit.inventory.CartographyInventory;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.persistence.PersistentDataType;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+public class MapCopyProtection extends BasicHack implements CommandExecutor {
+	final NamespacedKey copyKey = new NamespacedKey(plugin, "copy-protected");
+
+	public MapCopyProtection(SimpleAdminHacks plugin, BasicHackConfig config) {
+		super(plugin, config);
+	}
+
+	@Override
+	public void onEnable() {
+		super.onEnable();
+		plugin().registerCommand("copyprotect", this);
+	}
+
+	@Override
+	public void onDisable() {
+		super.onDisable();
+	}
+
+	@EventHandler
+	public void onMapCopyCartography(InventoryClickEvent event) {
+		if (!(event.getInventory() instanceof CartographyInventory) || event.getSlotType() != InventoryType.SlotType.RESULT)
+			return;
+
+		ItemStack item = event.getInventory().getItem(1); // paper, glass pane, blank map slot
+
+		if (item == null) return;
+
+		if (item.getType() == Material.GLASS_PANE || item.getType() == Material.PAPER) return; // Allow locking and scaling of copy protected maps
+
+		handleCopyProtection(event);
+	}
+
+	@EventHandler
+	public void onMapCopyCrafting(InventoryClickEvent event) {
+		if (!(event.getInventory() instanceof CraftInventoryCrafting) || event.getSlotType() != InventoryType.SlotType.RESULT)
+			return;
+
+		handleCopyProtection(event);
+	}
+
+	private void handleCopyProtection(InventoryClickEvent event) {
+		ItemStack item = event.getCurrentItem();
+
+		if (item == null || item.getType() == Material.AIR) return;
+
+		if (isCopy(item)) {
+			event.setCancelled(true);
+			event.getWhoClicked().sendMessage(
+					Component.text()
+							.color(NamedTextColor.RED)
+							.content("You can not clone copy protected maps")
+			);
+		}
+	}
+
+	@Override
+	public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+		if (!(sender instanceof Player player)) {
+			sender.sendMessage(
+					Component.text()
+							.color(NamedTextColor.RED)
+							.content("This command can only be run by players")
+			);
+			return true;
+		}
+
+		ItemStack item = player.getInventory().getItemInMainHand();
+
+		if (item.getType() != Material.FILLED_MAP) {
+			sender.sendMessage(
+					Component.text()
+							.color(NamedTextColor.RED)
+							.content("Only filled maps can be copy protected")
+			);
+			return true; // Command failed, but was syntactically correct, so no need to tell the player how to use it
+		}
+
+		if (isCopy(item)) {
+			sender.sendMessage(
+					Component.text()
+							.color(NamedTextColor.RED)
+							.content("You can not copy protect copy protected maps")
+			);
+			return true; // Command failed, but was syntactically correct, so no need to tell the player how to use it
+		}
+
+		ItemMeta itemMeta = item.getItemMeta();
+
+		itemMeta.getPersistentDataContainer().set(copyKey, PersistentDataType.INTEGER, 1);
+
+		itemMeta.lore(List.of(Component.text(String.format("Copy protected by %s", sender.getName()))));
+
+		player.getInventory().getItemInMainHand().setItemMeta(itemMeta);
+
+		return true;
+	}
+
+	private boolean isCopy(ItemStack item) {
+		return item.getItemMeta().getPersistentDataContainer().has(copyKey, PersistentDataType.INTEGER);
+	}
+}

paper/src/main/resources/config.yml

@@ -136,6 +136,8 @@ hacks:
     disableGapples: true
   ItemMetaConverterHack:
     enabled: true
+  MapCopyProtection:
+    enabled: true
   OldEnchanting:
     enabled: true
     # Hides what enchantment will be granted within the Enchanting Table

paper/src/main/resources/plugin.yml

@@ -25,7 +25,11 @@ commands:
     permission: simpleadmin.invmod
   chunklimits:
     description: Display block chunk limit in chat
-    usage: /<command> 
+    usage: /<command>
+  copyprotect:
+    description: Protect a map from copying.
+    usage: /<command>
+    permission: simpleadmin.copyprotect
   serialize:
     description: Print to console the object held as serialized yaml
     usage: /<command>