GameActivity.java

package id.pratama.menututorial;

import org.andengine.engine.camera.Camera;
import org.andengine.engine.options.EngineOptions;
import org.andengine.engine.options.ScreenOrientation;
import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.andengine.entity.scene.Scene;
import org.andengine.entity.scene.background.Background;
import org.andengine.entity.scene.menu.MenuScene;
import org.andengine.entity.scene.menu.MenuScene.IOnMenuItemClickListener;
import org.andengine.entity.scene.menu.item.IMenuItem;
import org.andengine.entity.scene.menu.item.SpriteMenuItem;
import org.andengine.entity.scene.menu.item.decorator.ScaleMenuItemDecorator;
import org.andengine.entity.sprite.Sprite;
import org.andengine.opengl.texture.TextureOptions;
import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas;
import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory;
import org.andengine.opengl.texture.atlas.bitmap.BuildableBitmapTextureAtlas;
import org.andengine.opengl.texture.atlas.bitmap.source.IBitmapTextureAtlasSource;
import org.andengine.opengl.texture.atlas.buildable.builder.BlackPawnTextureAtlasBuilder;
import org.andengine.opengl.texture.atlas.buildable.builder.ITextureAtlasBuilder.TextureAtlasBuilderException;
import org.andengine.opengl.texture.region.ITextureRegion;
import org.andengine.ui.activity.SimpleBaseGameActivity;
import org.andengine.util.color.Color;

public class GameActivity extends SimpleBaseGameActivity implements IOnMenuItemClickListener
{
 private final float     WIDTH  = 480;
 private final float     HEIGHT  = 320;

 private Camera      camera;
 private Scene      mainScene;
 private MenuScene     menuScene;
 private final int     MENU_PLAY = 0;
 private final int     MENU_OPT = 1;

 private BuildableBitmapTextureAtlas menuBtnTex;
 private ITextureRegion    menuBtnPlayReg;
 private ITextureRegion    menuBtnOptionsReg;

 @Override
 public EngineOptions onCreateEngineOptions()
 {
  // TODO Auto-generated method stub
  camera = new Camera(0, 0, WIDTH, HEIGHT);
  EngineOptions en = new EngineOptions(true, ScreenOrientation.LANDSCAPE_FIXED, new RatioResolutionPolicy(WIDTH,
    HEIGHT), camera);

  return en;
 }

 @Override
 protected void onCreateResources()
 {
  // TODO Auto-generated method stub
  BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");
  menuBtnTex = new BuildableBitmapTextureAtlas(getTextureManager(), 1024, 128,
    TextureOptions.BILINEAR_PREMULTIPLYALPHA);
  menuBtnPlayReg = BitmapTextureAtlasTextureRegionFactory.createFromAsset(menuBtnTex, getAssets(), "play.png");
  menuBtnOptionsReg = BitmapTextureAtlasTextureRegionFactory.createFromAsset(menuBtnTex, getAssets(),
    "options.png");
  try
  {
   menuBtnTex.build(new BlackPawnTextureAtlasBuilder<IBitmapTextureAtlasSource, BitmapTextureAtlas>(0, 1, 0));
   menuBtnTex.load();
  } catch (TextureAtlasBuilderException e)
  {
   // TODO: handle exception
  }

 }

 @Override
 protected Scene onCreateScene()
 {
  // TODO Auto-generated method stub
  mainScene = new Scene();
  mainScene.setBackground(new Background(Color.WHITE));

  menuScene = new MenuScene(camera);
  final IMenuItem playButton = new ScaleMenuItemDecorator(new SpriteMenuItem(MENU_PLAY, 200, 70, menuBtnPlayReg,
    getVertexBufferObjectManager()), 1.1f, 1);

  final IMenuItem optButton = new ScaleMenuItemDecorator(new SpriteMenuItem(MENU_OPT, 200, 70, menuBtnOptionsReg,
    getVertexBufferObjectManager()), 1.1f, 1);
  playButton.setPosition(WIDTH / 2 - playButton.getWidth() / 2, 100);
  optButton.setPosition(WIDTH / 2 - optButton.getWidth() / 2, 200);
  menuScene.addMenuItem(playButton);
  menuScene.addMenuItem(optButton);
  menuScene.buildAnimations();

  menuScene.setBackgroundEnabled(false);
  menuScene.setOnMenuItemClickListener(this);

  mainScene.setChildScene(menuScene);

  return mainScene;
 }

 @Override
 public boolean onMenuItemClicked(MenuScene pMenuScene, IMenuItem pMenuItem, float pMenuItemLocalX,
   float pMenuItemLocalY)
 {
  // TODO Auto-generated method stub
  switch (pMenuItem.getID())
  {
   case MENU_PLAY:
    // when click play
    break;
   case MENU_OPT:
    // when click options
    break;

  }
  return false;
 }
}