add click cooldown to all parallel guis

Author: EBro912

api/src/main/java/parallelmc/parallelutils/ParallelUtils.java

@@ -178,7 +178,7 @@ public void onEnable() {
 		getCommand("pu").setExecutor(commands);
 		getCommand("pu").setTabCompleter(commands);
 
-		Bukkit.getPluginManager().registerEvents(new OnMenuInteract(), this);
+		Bukkit.getPluginManager().registerEvents(new OnMenuInteract(this), this);
 
 		// Setup modules
 

api/src/main/java/parallelmc/parallelutils/events/OnMenuInteract.java

@@ -1,5 +1,8 @@
 package parallelmc.parallelutils.events;
 
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -15,6 +18,11 @@
 import parallelmc.parallelutils.util.GUIManager;
 
 public class OnMenuInteract implements Listener {
+    private final ParallelUtils puPlugin;
+    public OnMenuInteract(ParallelUtils puPlugin) {
+        this.puPlugin = puPlugin;
+    }
+
     @EventHandler
     public void onMenuClick(InventoryClickEvent event) {
         Player player = (Player)event.getWhoClicked();
@@ -26,7 +34,13 @@ public void onMenuClick(InventoryClickEvent event) {
             if (item == null || item.getType() == Material.AIR || item.getType() == Material.LIGHT_BLUE_STAINED_GLASS_PANE) {
                 return;
             }
+            if (GUIManager.get().isOnCooldown(player.getUniqueId())) {
+                player.sendMessage(Component.text("Slow down! Please wait a moment between clicks.", NamedTextColor.RED));
+                return;
+            }
+            GUIManager.get().setCooldown(player.getUniqueId());
             inv.onSlotClicked(player, event.getRawSlot(), item);
+            Bukkit.getScheduler().runTaskLater(puPlugin, () -> GUIManager.get().removeCooldown(player.getUniqueId()), 4);
         }
     }
 

api/src/main/java/parallelmc/parallelutils/util/GUIManager.java

@@ -4,6 +4,7 @@
 import org.bukkit.inventory.Inventory;
 
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.UUID;
 
 
@@ -18,6 +19,7 @@ public static GUIManager get() {
 
     // a list of all players with a GUI open
     private final HashMap<UUID, GUIInventory> openGUIs = new HashMap<>();
+    private final HashSet<UUID> onCooldown = new HashSet<>();
 
     public void openInventoryForPlayer(Player player, GUIInventory type) {
         type.onOpen(player);
@@ -36,4 +38,16 @@ public GUIInventory getOpenInventory(Player player) {
     public void closeMenu(Player player) {
         openGUIs.remove(player.getUniqueId());
     }
+
+    public void setCooldown(UUID uuid) {
+        onCooldown.add(uuid);
+    }
+
+    public void removeCooldown(UUID uuid) {
+        onCooldown.remove(uuid);
+    }
+
+    public boolean isOnCooldown(UUID uuid) {
+        return onCooldown.contains(uuid);
+    }
 }