Fix NPE on create new 9 patch due to project reload

hyperlap2d-common-api/src/main/java/games/rednblack/h2d/common/plugins/PluginAPI.java

@@ -18,8 +18,8 @@
 
 package games.rednblack.h2d.common.plugins;
 
-import com.badlogic.ashley.core.Engine;
 import com.badlogic.ashley.core.Entity;
+import com.badlogic.ashley.core.PooledEngine;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.math.Vector2;
@@ -56,7 +56,7 @@ public interface PluginAPI {
      * Returns Ashley engine of main scene where all entities are located
      * @return Engine
      */
-    Engine getEngine();
+    PooledEngine getEngine();
 
     /**
      * Get simple libGDX Stage for UI part of editor, to add dialogs or other UI elements and widgets

plugin-9patch/src/main/java/games/rednblack/editor/plugin/ninepatch/MainPanelMediator.java

@@ -53,7 +53,6 @@ public class MainPanelMediator extends SimpleMediator<MainPanel> {
                 break;
             case NinePatchPlugin.CONVERT_TO_NINE_PATCH:
                 convertImageToNinePatch();
-                loadNinePatch();
                 break;
             case MainPanel.SAVE_CLICKED:
                 Entity entity = plugin.currEditingEntity;
@@ -70,7 +69,7 @@ public class MainPanelMediator extends SimpleMediator<MainPanel> {
         mainItemComponent.entityType = EntityFactory.NINE_PATCH;
         TextureRegionComponent textureRegionComponent = ComponentRetriever.get(entity, TextureRegionComponent.class);
         String regionName = textureRegionComponent.regionName;
-        NinePatchComponent ninePatchComponent = new NinePatchComponent();
+        NinePatchComponent ninePatchComponent = plugin.getAPI().getEngine().createComponent(NinePatchComponent.class);
         ninePatchComponent.textureRegionName = regionName;
         TextureAtlas.AtlasRegion newRegion = (TextureAtlas.AtlasRegion) textureRegionComponent.region;
         int[] splits = {0, 0, 0, 0};

src/main/java/games/rednblack/editor/proxy/PluginManager.java

@@ -18,8 +18,8 @@
 
 package games.rednblack.editor.proxy;
 
-import com.badlogic.ashley.core.Engine;
 import com.badlogic.ashley.core.Entity;
+import com.badlogic.ashley.core.PooledEngine;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
@@ -210,7 +210,7 @@ public class PluginManager extends BaseProxy implements PluginAPI {
     }
 
     @Override
-    public Engine getEngine() {
+    public PooledEngine getEngine() {
         return getSceneLoader().getEngine();
     }