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.modifier.MoveModifier;

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.sprite.Sprite;

import org.andengine.entity.util.FPSLogger;

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.region.ITextureRegion;

import org.andengine.ui.activity.SimpleBaseGameActivity;

import android.opengl.GLES20;

import android.view.KeyEvent;

/**

* (c) 2010 Nicolas Gramlich

* (c) 2011 Zynga

*

* @author Nicolas Gramlich

* @since 01:30:15 - 02.04.2010

*/

public class MenuExample extends SimpleBaseGameActivity implements IOnMenuItemClickListener {

// ===========================================================

// Constants

// ===========================================================

private static final int CAMERA_WIDTH = 720;

private static final int CAMERA_HEIGHT = 480;

protected static final int MENU_RESET = 0;

protected static final int MENU_QUIT = MENU_RESET + 1;

// ===========================================================

// Fields

// ===========================================================

protected Camera mCamera;

protected Scene mMainScene;

private BitmapTextureAtlas mBitmapTextureAtlas;

private ITextureRegion mFaceTextureRegion;

protected MenuScene mMenuScene;

private BitmapTextureAtlas mMenuTexture;

protected ITextureRegion mMenuResetTextureRegion;

protected ITextureRegion mMenuQuitTextureRegion;

// ===========================================================

// Constructors

// ===========================================================

// ===========================================================

// Getter & Setter

// ===========================================================

// ===========================================================

// Methods for/from SuperClass/Interfaces

// ===========================================================

@Override

public EngineOptions onCreateEngineOptions() {

this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);

return new EngineOptions(true, ScreenOrientation.LANDSCAPE_FIXED, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), this.mCamera);

}

@Override

public void onCreateResources() {

BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");

this.mBitmapTextureAtlas = new BitmapTextureAtlas(this.getTextureManager(), 64, 64, TextureOptions.BILINEAR);

this.mFaceTextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mBitmapTextureAtlas, this, "face_box_menu.png", 0, 0);

this.mBitmapTextureAtlas.load();

this.mMenuTexture = new BitmapTextureAtlas(this.getTextureManager(), 256, 128, TextureOptions.BILINEAR);

this.mMenuResetTextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mMenuTexture, this, "menu_reset.png", 0, 0);

this.mMenuQuitTextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mMenuTexture, this, "menu_quit.png", 0, 50);

this.mMenuTexture.load();

}

@Override

public Scene onCreateScene() {

this.mEngine.registerUpdateHandler(new FPSLogger());

this.createMenuScene();

/* Just a simple scene with an animated face flying around. */

this.mMainScene = new Scene();

this.mMainScene.setBackground(new Background(0.09804f, 0.6274f, 0.8784f));

final Sprite face = new Sprite(0, 0, this.mFaceTextureRegion, this.getVertexBufferObjectManager());

face.registerEntityModifier(new MoveModifier(30, 0, CAMERA_WIDTH - face.getWidth(), 0, CAMERA_HEIGHT - face.getHeight()));

this.mMainScene.attachChild(face);

return this.mMainScene;

}

@Override

public boolean onKeyDown(final int pKeyCode, final KeyEvent pEvent) {

if(pKeyCode == KeyEvent.KEYCODE_MENU && pEvent.getAction() == KeyEvent.ACTION_DOWN) {

if(this.mMainScene.hasChildScene()) {

/* Remove the menu and reset it. */

this.mMenuScene.back();

} else {

/* Attach the menu. */

this.mMainScene.setChildScene(this.mMenuScene, false, true, true);

}

return true;

} else {

return super.onKeyDown(pKeyCode, pEvent);

}

}

@Override

public boolean onMenuItemClicked(final MenuScene pMenuScene, final IMenuItem pMenuItem, final float pMenuItemLocalX, final float pMenuItemLocalY) {

switch(pMenuItem.getID()) {

case MENU_RESET:

/* Restart the animation. */

this.mMainScene.reset();

/* Remove the menu and reset it. */

this.mMainScene.clearChildScene();

this.mMenuScene.reset();

return true;

case MENU_QUIT:

/* End Activity. */

this.finish();

return true;

default:

return false;

}

}

// ===========================================================

// Methods

// ===========================================================

protected void createMenuScene() {

this.mMenuScene = new MenuScene(this.mCamera);

final SpriteMenuItem resetMenuItem = new SpriteMenuItem(MENU_RESET, this.mMenuResetTextureRegion, this.getVertexBufferObjectManager());

resetMenuItem.setBlendFunction(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);

this.mMenuScene.addMenuItem(resetMenuItem);

final SpriteMenuItem quitMenuItem = new SpriteMenuItem(MENU_QUIT, this.mMenuQuitTextureRegion, this.getVertexBufferObjectManager());

quitMenuItem.setBlendFunction(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);

this.mMenuScene.addMenuItem(quitMenuItem);

this.mMenuScene.buildAnimations();

this.mMenuScene.setBackgroundEnabled(false);

this.mMenuScene.setOnMenuItemClickListener(this);

}

// ===========================================================

// Inner and Anonymous Classes

// ===========================================================

}