我正在使用andengine在android中开发游戏。我在sprite中放置了一个像
的对象 this.mTexture = new Texture(32, 32, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
this.mFaceTextureRegion = TextureRegionFactory.createFromAsset(this.mTexture, this, "gfx/bike.png", 0, 0);
---- and i place like
Sprite bikeSprite= new Sprite(20, 50, this.mFaceTextureRegion);
我想在j2me精灵中使用这个精灵
bikeSprite.move(--);我如何在android中完成它。我不想使用setPosition。
答案 0 :(得分：5)
public class EntityModifierExample extends BaseExample {
// ===========================================================
// Constants
// ===========================================================
private static final int CAMERA_WIDTH = 720;
private static final int CAMERA_HEIGHT = 480;
// ===========================================================
// Fields
// ===========================================================
private Camera mCamera;
private Texture mTexture;
private TiledTextureRegion mFaceTextureRegion;
// ===========================================================
// Constructors
// ===========================================================
// ===========================================================
// Getter & Setter
// ===========================================================
// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================
@Override
public Engine onLoadEngine() {
this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
return new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), this.mCamera));
}
@Override
public void onLoadResources() {
this.mTexture = new Texture(64, 32, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
this.mFaceTextureRegion = TextureRegionFactory.createTiledFromAsset(this.mTexture, this, "gfx/face_box_tiled.png", 0, 0, 2, 1);
this.mEngine.getTextureManager().loadTexture(this.mTexture);
}
@Override
public Scene onLoadScene() {
this.mEngine.registerUpdateHandler(new FPSLogger());
final Scene scene = new Scene();
scene.setBackground(new ColorBackground(0.09804f, 0.6274f, 0.8784f));
final int centerX = (CAMERA_WIDTH - this.mFaceTextureRegion.getWidth()) / 2;
final int centerY = (CAMERA_HEIGHT - this.mFaceTextureRegion.getHeight()) / 2;
final Rectangle rect = new Rectangle(centerX + 100, centerY, 32, 32);
rect.setColor(1, 0, 0);
final AnimatedSprite face = new AnimatedSprite(centerX - 100, centerY, this.mFaceTextureRegion);
face.animate(100);
face.setBlendFunction(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
final LoopEntityModifier entityModifier =
new LoopEntityModifier(
new IEntityModifierListener() {
@Override
public void onModifierStarted(final IModifier<IEntity> pModifier, final IEntity pItem) {
EntityModifierExample.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(EntityModifierExample.this, "Sequence started.", Toast.LENGTH_LONG).show();
}
});
}
@Override
public void onModifierFinished(final IModifier<IEntity> pEntityModifier, final IEntity pEntity) {
EntityModifierExample.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(EntityModifierExample.this, "Sequence finished.", Toast.LENGTH_LONG).show();
}
});
}
},
1,
new ILoopEntityModifierListener() {
@Override
public void onLoopStarted(final LoopModifier<IEntity> pLoopModifier, final int pLoop, final int pLoopCount) {
EntityModifierExample.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(EntityModifierExample.this, "Loop: '" + (pLoop + 1) + "' of '" + pLoopCount + "' started.", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onLoopFinished(final LoopModifier<IEntity> pLoopModifier, final int pLoop, final int pLoopCount) {
EntityModifierExample.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(EntityModifierExample.this, "Loop: '" + (pLoop + 1) + "' of '" + pLoopCount + "' finished.", Toast.LENGTH_SHORT).show();
}
});
}
},
new SequenceEntityModifier(
new RotationModifier(1, 0, 90),
new AlphaModifier(2, 1, 0),
new AlphaModifier(1, 0, 1),
new ScaleModifier(2, 1, 0.5f),
new DelayModifier(0.5f),
new ParallelEntityModifier(
new ScaleModifier(3, 0.5f, 5),
new RotationByModifier(3, 90)
),
new ParallelEntityModifier(
new ScaleModifier(3, 5, 1),
new RotationModifier(3, 180, 0)
)
)
);
face.registerEntityModifier(entityModifier);
rect.registerEntityModifier(entityModifier.clone());
scene.attachChild(face);
scene.attachChild(rect);
return scene;
}
@Override
public void onLoadComplete() {
}
// ===========================================================
// Methods
// ===========================================================
// ===========================================================
// Inner and Anonymous Classes
// ===========================================================
}
此代码摘自samples project Andengine。 Reference to the original code
答案 1 :(得分：2)
我会尝试使用PathModifier。我的游戏有同样的问题，AndEngine示例中可以找到PathModifier示例：
package org.anddev.andengine.examples;
import org.anddev.andengine.engine.Engine;
import org.anddev.andengine.engine.camera.Camera;
import org.anddev.andengine.engine.options.EngineOptions;
import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation;
import org.anddev.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.anddev.andengine.entity.IEntity;
import org.anddev.andengine.entity.modifier.LoopEntityModifier;
import org.anddev.andengine.entity.modifier.PathModifier;
import org.anddev.andengine.entity.modifier.PathModifier.IPathModifierListener;
import org.anddev.andengine.entity.modifier.PathModifier.Path;
import org.anddev.andengine.entity.scene.Scene;
import org.anddev.andengine.entity.scene.background.RepeatingSpriteBackground;
import org.anddev.andengine.entity.sprite.AnimatedSprite;
import org.anddev.andengine.opengl.texture.Texture;
import org.anddev.andengine.opengl.texture.TextureOptions;
import org.anddev.andengine.opengl.texture.region.TextureRegionFactory;
import org.anddev.andengine.opengl.texture.region.TiledTextureRegion;
import org.anddev.andengine.opengl.texture.source.AssetTextureSource;
import org.anddev.andengine.util.Debug;
import org.anddev.andengine.util.modifier.ease.EaseSineInOut;
import android.widget.Toast;
/**
* @author Nicolas Gramlich
* @since 11:54:51 - 03.04.2010
*/
public class PathModifierExample extends BaseExample {
// ===========================================================
// Constants
// ===========================================================
private static final int CAMERA_WIDTH = 720;
private static final int CAMERA_HEIGHT = 480;
// ===========================================================
// Fields
// ===========================================================
private Camera mCamera;
private RepeatingSpriteBackground mGrassBackground;
private Texture mTexture;
private TiledTextureRegion mPlayerTextureRegion;
// ===========================================================
// Constructors
// ===========================================================
// ===========================================================
// Getter & Setter
// ===========================================================
// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================
@Override
public Engine onLoadEngine() {
Toast.makeText(this, "You move my sprite right round, right round...", Toast.LENGTH_LONG).show();
this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
return new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), this.mCamera));
}
@Override
public void onLoadResources() {
this.mTexture = new Texture(128, 128, TextureOptions.DEFAULT);
this.mPlayerTextureRegion = TextureRegionFactory.createTiledFromAsset(this.mTexture, this, "gfx/player.png", 0, 0, 3, 4);
this.mGrassBackground = new RepeatingSpriteBackground(CAMERA_WIDTH, CAMERA_HEIGHT, this.mEngine.getTextureManager(), new AssetTextureSource(this, "gfx/background_grass.png"));
this.mEngine.getTextureManager().loadTexture(this.mTexture);
}
@Override
public Scene onLoadScene() {
// this.mEngine.registerUpdateHandler(new FPSLogger());
final Scene scene = new Scene();
scene.setBackground(this.mGrassBackground);
/* Create the face and add it to the scene. */
final AnimatedSprite player = new AnimatedSprite(10, 10, 48, 64, this.mPlayerTextureRegion);
final Path path = new Path(5).to(10, 10).to(10, CAMERA_HEIGHT - 74).to(CAMERA_WIDTH - 58, CAMERA_HEIGHT - 74).to(CAMERA_WIDTH - 58, 10).to(10, 10);
/* Add the proper animation when a waypoint of the path is passed. */
player.registerEntityModifier(new LoopEntityModifier(new PathModifier(30, path, null, new IPathModifierListener() {
@Override
public void onPathStarted(final PathModifier pPathModifier, final IEntity pEntity) {
Debug.d("onPathStarted");
}
@Override
public void onPathWaypointStarted(final PathModifier pPathModifier, final IEntity pEntity, final int pWaypointIndex) {
Debug.d("onPathWaypointStarted: " + pWaypointIndex);
switch(pWaypointIndex) {
case 0:
player.animate(new long[]{200, 200, 200}, 6, 8, true);
break;
case 1:
player.animate(new long[]{200, 200, 200}, 3, 5, true);
break;
case 2:
player.animate(new long[]{200, 200, 200}, 0, 2, true);
break;
case 3:
player.animate(new long[]{200, 200, 200}, 9, 11, true);
break;
}
}
@Override
public void onPathWaypointFinished(final PathModifier pPathModifier, final IEntity pEntity, final int pWaypointIndex) {
Debug.d("onPathWaypointFinished: " + pWaypointIndex);
}
@Override
public void onPathFinished(final PathModifier pPathModifier, final IEntity pEntity) {
Debug.d("onPathFinished");
}
}, EaseSineInOut.getInstance())));
scene.attachChild(player);
return scene;
}
@Override
public void onLoadComplete() {
}
// ===========================================================
// Methods
// ===========================================================
// ===========================================================
// Inner and Anonymous Classes
// ===========================================================
}