Implemented new RA.

RhythmBullet/Content/UI.tatlas

@@ -33,13 +33,29 @@
       }
     },
     {
-      "name": "rectangle-button",
+      "name": "rectangle-button-highlighted",
       "bounds": {
         "X": 0,
         "Y": 32,
         "Width": 16,
         "Height": 16
       },
+      "ninePatchData": {
+        "textureName": "rectangle-button-highlighted.png",
+        "left": 4,
+        "right": 4,
+        "bottom": 4,
+        "top": 4
+      }
+    },
+    {
+      "name": "rectangle-button",
+      "bounds": {
+        "X": 0,
+        "Y": 48,
+        "Width": 16,
+        "Height": 16
+      },
       "ninePatchData": {
         "textureName": "rectangle-button.png",
         "left": 4,

RhythmBullet/RhythmBulletGame.cs

@@ -101,6 +101,7 @@ namespace RhythmBullet
             Camera = RecrownedAthenaeum.Configuration.Camera2D;
 
             screenManager = new ScreenManager();
+            RecrownedAthenaeum.Configuration.BeginBatchFunction = screenManager.beginBatchFunc;
             screenManager.ShowFirstScreenEvent += ShowFirstScreen;
             QueueContent();
             screenManager.Screen = new LoadingScreen(this, Content.Load<Texture2D>("RhythmBullet"), 0.7f);
@@ -243,6 +244,7 @@ namespace RhythmBullet
             skin.AddColor("default", Color.White);
 
             TextButtonSkinDefinition textButtonSkinDefinition = new TextButtonSkinDefinition("rectangle-button-down", "rectangle-button");
+            textButtonSkinDefinition.selectedRegion = "rectangle-button-highlighted";
             textButtonSkinDefinition.disabledRegion = "rectangle-button-disabled";
             
             skin.AddDefinition(textButtonSkinDefinition);