Unload itemcases on plugin disable.

Unload and despawn itemcases and their items on plugin disable.

src/main/java/com/gmail/bleedobsidian/itemcase/ItemCaseCore.java

@@ -81,6 +81,13 @@ public final class ItemCaseCore extends JavaPlugin {
                 new ItemcaseListener(), this);
     }
     
+    @Override
+    public void onDisable() {
+        
+        // Unload all itemcases.
+        this.itemcaseManager.unloadItemcases();
+    }
+    
     /**
 
      * @return Main ItemCase configuration file.

src/main/java/com/gmail/bleedobsidian/itemcase/Itemcase.java

@@ -25,7 +25,6 @@ import org.bukkit.OfflinePlayer;
 import org.bukkit.World;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Item;
-import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -69,7 +68,7 @@ public final class Itemcase {
     /**
      * This itemcase's task.
      */
-    private final ItemcaseTask task;
+    private ItemcaseTask task;
     
     /**
      * The active item that is currently on display.
@@ -108,10 +107,6 @@ public final class Itemcase {
         // Set owner.
         this.owner = owner;
         
-        // Schedule itemcase task to execute every 200 server ticks (10 secs).
-        this.task = new ItemcaseTask(this);
-        this.task.runTaskTimer(ItemCaseCore.instance, 0, 200);
-        
         // Spawn display item for the first time.
         this.spawnItem();
     }
@@ -121,6 +116,10 @@ public final class Itemcase {
      */
     public void spawnItem()  {
         
+        // Schedule itemcase task to execute every 200 server ticks (10 secs).
+        this.task = new ItemcaseTask(this);
+        this.task.runTaskTimer(ItemCaseCore.instance, 0, 200);
+        
         // Get the world that this itemcase is in.
         World world = this.location.getWorld();
         
@@ -159,6 +158,11 @@ public final class Itemcase {
      * Despawn the display item for this itemcase.
      */
     public void despawnItem() {
+        
+        // Cancel running task.
+        this.task.cancel();
+        
+        // Remove current display item from world.
         this.displayItem.remove();
     }
     

src/main/java/com/gmail/bleedobsidian/itemcase/managers/ItemcaseManager.java

@@ -113,6 +113,22 @@ public final class ItemcaseManager {
         }
     }
     
+    /**
+     * Unload all currently loaded Itemcases.
+     */
+    public void unloadItemcases() {
+        
+        // For every loaded itemcase.
+        for(Itemcase itemcase : this.itemcases) {
+            
+            // Despawn the item.
+            itemcase.despawnItem();
+        }
+        
+        // Clear list.
+        this.itemcases.clear();
+    }
+    
     /**
      * @return A list of all active Itemcase instances.
      */