[AndEngine学习教程] 第2节 使用AndEngine.jar创建工程
1.回顾
在上一节已经成功的导入AndEngine源代码项目,我们就利用它来实现我们的工程.lib文件在bin目录下:
2.建立工程
在eclipse下file->new->project...->Android Application Project
点击next
设置工程明等参数,例如:MoveBall,为了兼容工程版本,将SDk版本修改为2.1,如图所示:
接着下一步,可以随便选择你要的图标
然后next ....finish就完成了初始工程的创建
3.修改原始工程
鼠标放在MoveBall项目上,右键选择Build Path->Configure build path
然后选择Projects,点击右边的Add.选择上AndEngine
点击OK就可以将AndEngine项目添加到工程了
打开MoveBall,java,将MoveBall extends Activity修改为MoveBall extends BaseGameActivity.
接着写代码:
[java]
package season.lxx.moveball;
import org.andengine.engine.camera.Camera;
import org.andengine.engine.options.EngineOptions;
import org.andengine.engine.options.ScreenOrientation;
import org.andengine.engine.options.resolutionpolicy.IResolutionPolicy;
import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.andengine.entity.scene.Scene;
import org.andengine.entity.scene.background.RepeatingSpriteBackground;
import org.andengine.entity.sprite.AnimatedSprite;
import org.andengine.entity.sprite.TiledSprite;
import org.andengine.entity.sprite.vbo.ITiledSpriteVertexBufferObject;
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.source.AssetBitmapTextureAtlasSource;
import org.andengine.opengl.texture.region.ITiledTextureRegion;
import org.andengine.opengl.texture.region.TiledTextureRegion;
import org.andengine.opengl.vbo.VertexBufferObjectManager;
import org.andengine.ui.activity.BaseGameActivity;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
public class MoveBall extends BaseGameActivity {
private static final int CAMERA_WIDTH = 800;
private static final int CAMERA_HEIGHT = 480;
private final static float BALL_VELOCITY = 100f;//球的移动速度
private Camera mCamera;
private Scene mScene;
private RepeatingSpriteBackground background;
private TiledTextureRegion mFaceTextureRegion;
@Override
public EngineOptions onCreateEngineOptions() {
// TODO Auto-generated method stub
mCamera = new Camera(0,0,CAMERA_WIDTH,CAMERA_HEIGHT);
EngineOptions mEngineOptions = new EngineOptions(true, ScreenOrientation.LANDSCAPE_SENSOR, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), mCamera);
return mEngineOptions;
}
@Override
public void onCreateResources(
OnCreateResourcesCallback pOnCreateResourcesCallback)
throws Exception {
// TODO Auto-generated method stub
this.background = new RepeatingSpriteBackground(CAMERA_WIDTH, CAMERA_HEIGHT,
getTextureManager(), AssetBitmapTextureAtlasSource.create(
this.getAssets(), "background.png"),
getVertexBufferObjectManager());
BitmapTextureAtlas mTexture = new BitmapTextureAtlas(getTextureManager(),64,32,TextureOptions.BILINEAR_PREMULTIPLYALPHA);
mFaceTextureRegion = BitmapTextureAtlasTextureRegionFactory.createTiledFromAsset(mTexture, this, "face_circle_tiled.png", 0, 0,2,1);
/**
* 参数说明:
* mTexure是在内存中放置贴图资源用的,64,32是图片要求的宽和高,必须是2的n次方大小.如:2,4,8,16,32,64,128,512,1024....
* 并且要比原图的宽高要大
*
* mFaceTextureRegion相当于从mTexure中扣图,因为mTexure是由很多图集组成的,要从中截取一片出来
* 0,0代表截图的top,right坐标(起点坐标),2和1分别代表贴图中一张存在2列1行
*
*/
mTexture.load();
pOnCreateResourcesCallback.onCreateResourcesFinished();
}
@Override
public void onCreateScene(OnCreateSceneCallback pOnCreateSceneCallback)
throws Exception {
// TODO Auto-generated method stub
mScene = new Scene();
mScene.setBackground(background);
final float centerX = (CAMERA_WIDTH - mFaceTextureRegion.getWidth()) / 2;//计算贴图的中心坐标
final float centerY = (CAMERA_HEIGHT - mFaceTextureRegion.getHeight()) / 2;
final Ball mBall = new Ball(centerX, centerY,32, 32,this.mFaceTextureRegion,getVertexBufferObjectManager());
补充：软件开发 , Java ,
