Fix RightClickAir and LeftClickAir

BauSystem_Main/src/de/steamwar/bausystem/world/ScriptListener.java

@@ -24,6 +24,7 @@ import de.steamwar.core.Core;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.Action;
 import org.bukkit.event.player.PlayerCommandPreprocessEvent;
@@ -32,7 +33,9 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.BookMeta;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 import java.util.logging.Level;
 
 public class ScriptListener implements Listener {
@@ -68,9 +71,19 @@ public class ScriptListener implements Listener {
         });
     }
 
+    private Set<Player> playerSet = new HashSet<>();
+
+    @EventHandler(priority = EventPriority.HIGH)
     public void onLeftClick(PlayerInteractEvent event) {
-        if(event.getAction() != Action.LEFT_CLICK_AIR && event.getAction() != Action.LEFT_CLICK_BLOCK)
+        if (event.getAction() != Action.LEFT_CLICK_AIR && event.getAction() != Action.LEFT_CLICK_BLOCK) {
+            if (event.getAction() == Action.RIGHT_CLICK_AIR) {
+                playerSet.add(event.getPlayer());
+            }
             return;
+        }
+        if (playerSet.remove(event.getPlayer())) {
+            return;
+        }
 
         ItemStack item = event.getItem();
         if(item == null || isNoBook(item) || item.getItemMeta() == null)