ButtonSpriteExample.java

package org.andengine.examples;

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.sprite.ButtonSprite;
import org.andengine.entity.sprite.ButtonSprite.OnClickListener;
import org.andengine.entity.sprite.Sprite;
import org.andengine.entity.util.FPSLogger;
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.debug.Debug;

import android.widget.Toast;

/**
 * (c) 2010 Nicolas Gramlich
 * (c) 2011 Zynga
 *
 * @author Nicolas Gramlich
 * @since 11:54:51 - 03.04.2010
 */
public class ButtonSpriteExample extends SimpleBaseGameActivity implements OnClickListener {
	// ===========================================================
	// Constants
	// ===========================================================

	private static final int CAMERA_WIDTH = 720;
	private static final int CAMERA_HEIGHT = 480;

	// ===========================================================
	// Fields
	// ===========================================================

	private BuildableBitmapTextureAtlas mBitmapTextureAtlas;
	private ITextureRegion mFace1TextureRegion;
	private ITextureRegion mFace2TextureRegion;
	private ITextureRegion mFace3TextureRegion;

	// ===========================================================
	// Constructors
	// ===========================================================

	// ===========================================================
	// Getter & Setter
	// ===========================================================

	// ===========================================================
	// Methods for/from SuperClass/Interfaces
	// ===========================================================

	@Override
	public EngineOptions onCreateEngineOptions() {
		final Camera camera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);

		return new EngineOptions(true, ScreenOrientation.LANDSCAPE_SENSOR, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), camera);
	}

	@Override
	public void onCreateResources() {
		BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");

		this.mBitmapTextureAtlas = new BuildableBitmapTextureAtlas(this.getTextureManager(), 512, 512);
		this.mFace1TextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mBitmapTextureAtlas, this, "face_box_tiled.png");
		this.mFace2TextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mBitmapTextureAtlas, this, "face_circle_tiled.png");
		this.mFace3TextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mBitmapTextureAtlas, this, "face_hexagon_tiled.png");
		
		try {
			this.mBitmapTextureAtlas.build(new BlackPawnTextureAtlasBuilder<IBitmapTextureAtlasSource, BitmapTextureAtlas>(0, 0, 0));
			this.mBitmapTextureAtlas.load();
		} catch (TextureAtlasBuilderException e) {
			Debug.e(e);
		}
	}

	@Override
	public Scene onCreateScene() {
		this.mEngine.registerUpdateHandler(new FPSLogger());

		final Scene scene = new Scene();
		scene.setBackground(new Background(0.09804f, 0.6274f, 0.8784f));

		/* Calculate the coordinates for the face, so its centered on the camera. */
		final float centerX = (CAMERA_WIDTH - this.mFace1TextureRegion.getWidth()) / 2;
		final float centerY = (CAMERA_HEIGHT - this.mFace1TextureRegion.getHeight()) / 2;

		/* Create the button and add it to the scene. */
		final Sprite face = new ButtonSprite(centerX, centerY, this.mFace1TextureRegion, this.mFace2TextureRegion, this.mFace3TextureRegion, this.getVertexBufferObjectManager(), this);
		scene.registerTouchArea(face);
		scene.attachChild(face);
		scene.setTouchAreaBindingOnActionDownEnabled(true);

		return scene;
	}

	@Override
	public void onClick(final ButtonSprite pButtonSprite, final float pTouchAreaLocalX, final float pTouchAreaLocalY) {
		runOnUiThread(new Runnable() {
			@Override
			public void run() {
				Toast.makeText(ButtonSpriteExample.this, "Clicked", Toast.LENGTH_LONG).show();
			}
		});
	}

	// ===========================================================
	// Methods
	// ===========================================================

	// ===========================================================
	// Inner and Anonymous Classes
	// ===========================================================
}