如何使用andEngine移动精灵的身体吗？ [英] how to move body of sprite using andEngine?

问题描述

我想移动精灵的身体随着线线的某一部分，只是我能只移动精灵，但身体不动。

 公共场景onLoadScene（）{
    this.mEngine.registerUpdateHandler（新FPSLogger（））;
    最后一幕一幕=新场景（2）;
    scene.setBackground（新ColorBackground（0.09804f，0.00274f，0.0784f））;
    这.enableAccelerometerSensor（本）;
    this.sPhysicsWorld =新PhysicsWorld（新Vector2（0，SensorManager.GRAVITY_EARTH），FALSE）;
    最终形状地面=新的Rectangle（0，CAMERA_HEIGHT  -  2，CAMERA_WIDTH，2）;
    最终形状的屋顶=新的Rectangle（0，0，CAMERA_WIDTH，2）;
    最终形状左=新的Rectangle（0，0，2，CAMERA_HEIGHT）;
    最终形状右=新的​​Rectangle（CAMERA_WIDTH-2，0,2，CAMERA_HEIGHT）;


    PhysicsFactory.createBoxBody（this.sPhysicsWorld，地面，
            BodyType.StaticBody，wallFixtureDef）;
    PhysicsFactory.createBoxBody（this.sPhysicsWorld，屋顶，
            BodyType.StaticBody，wallFixtureDef）;
    PhysicsFactory.createBoxBody（this.sPhysicsWorld，左，
            BodyType.StaticBody，wallFixtureDef）;
    PhysicsFactory.createBoxBody（this.sPhysicsWorld吧，
            BodyType.StaticBody，wallFixtureDef）;
    scene.getFirstChild（）attachChild（地）。
    scene.getFirstChild（）attachChild（屋顶）。
    scene.getFirstChild（）attachChild（左）。
    scene.getFirstChild（）attachChild（右）。

    最终诠释的centerX =（CAMERA_WIDTH  -  this.mFaceTextureRegion.getWidth（））/ 2;
    最终诠释centerY =（CAMERA_HEIGHT  -  this.mFaceTextureRegion.getHeight（））/ 2;
    最后AnimatedSprite面=新AnimatedSprite（的centerX  -  100，centerY，this.mFaceTextureRegion）;
    最后身体bodyRedBall = PhysicsFactory.createCircleBody（this.sPhysicsWorld，脸，
            BodyType.DynamicBody，wallFixtureDef）;
    this.sPhysicsWorld.registerPhysicsConnector（新PhysicsConnector（面部，bodyRedBall，真，真））;
     scene.attachChild（面）;

     最后AnimatedSprite face2 =新AnimatedSprite（100，100，this.mFaceTextureRegion）;
     最后身体bodyRedBall2 = PhysicsFactory.createCircleBody（this.sPhysicsWorld，face2，
            BodyType.KinematicBody，wallFixtureDef）;
     最终路径path4 =新路径（3）。为（682，223）。为了（482，223）。为了（682，223）;

     face2.registerEntityModifier（新LoopEntityModifier（新PathModifier（30，path4，空，新IPathModifierListener（）{
            @覆盖
            公共无效onWaypointPassed（最终PathModifier pPathModifier，最终IEntity pEntity，最终诠释pWaypointIndex）{
            }
        }）））;
     this.sPhysicsWorld.registerPhysicsConnector（新PhysicsConnector（face2，bodyRedBall2，真，真）{
         @覆盖
         公共无效的OnUpdate（最终浮动pSecondsElapsed）{
                 super.onUpdate（pSecondsElapsed）;
                 face2.setPosition（face2.getX（），face2.getY（））;
         }
 }）;


      scene.attachChild（face2）;
     scene.registerUpdateHandler（this.sPhysicsWorld）;
  返回现场;
}

@覆盖
公共无效的onLoadComplete（）{
}

@覆盖
公共无效onAccelerometerChanged（AccelerometerData pAccelerometerData）{
    // TODO自动生成方法存根
     最终Vector2比重= Vector2Pool.obtain（pAccelerometerData.getY（），pAccelerometerData.getX（））;
     this.sPhysicsWorld.setGravity（重力）;
     Vector2Pool.recycle（重力）;
}
 

解决方案

您可以使用 body.setLinearVelocity（）; 移动身体，精灵会自动跟随身体，因为你已经指定一个物理连接。

I want to move body of the sprite along with line in some portion of line, just i able to move sprite only but body is not moving.

public Scene onLoadScene() {
    this.mEngine.registerUpdateHandler(new FPSLogger());
    final Scene scene = new Scene(2);
    scene.setBackground(new ColorBackground(0.09804f, 0.00274f, 0.0784f));
    this .enableAccelerometerSensor(this );
    this.sPhysicsWorld = new PhysicsWorld(new Vector2(0, SensorManager.GRAVITY_EARTH), false);
    final Shape ground = new Rectangle(0, CAMERA_HEIGHT - 2, CAMERA_WIDTH,2);
    final Shape roof = new Rectangle(0, 0, CAMERA_WIDTH, 2);
    final Shape left = new Rectangle(0, 0, 2, CAMERA_HEIGHT);
    final Shape right = new Rectangle(CAMERA_WIDTH-2, 0,2, CAMERA_HEIGHT);


    PhysicsFactory.createBoxBody(this.sPhysicsWorld, ground,
            BodyType.StaticBody, wallFixtureDef);
    PhysicsFactory.createBoxBody(this.sPhysicsWorld, roof,
            BodyType.StaticBody, wallFixtureDef);
    PhysicsFactory.createBoxBody(this.sPhysicsWorld, left,
            BodyType.StaticBody, wallFixtureDef);
    PhysicsFactory.createBoxBody(this.sPhysicsWorld, right,
            BodyType.StaticBody, wallFixtureDef);
    scene.getFirstChild().attachChild(ground);
    scene.getFirstChild().attachChild(roof);
    scene.getFirstChild().attachChild(left);
    scene.getFirstChild().attachChild(right);

    final int centerX = (CAMERA_WIDTH - this.mFaceTextureRegion.getWidth()) / 2;
    final int centerY = (CAMERA_HEIGHT - this.mFaceTextureRegion.getHeight()) / 2;
    final AnimatedSprite face = new AnimatedSprite(centerX - 100, centerY, this.mFaceTextureRegion);
    final Body bodyRedBall = PhysicsFactory.createCircleBody(this.sPhysicsWorld, face,
            BodyType.DynamicBody, wallFixtureDef);
    this.sPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(face, bodyRedBall, true, true));
     scene.attachChild(face);

     final AnimatedSprite face2 = new AnimatedSprite(100, 100, this.mFaceTextureRegion);
     final Body bodyRedBall2 = PhysicsFactory.createCircleBody(this.sPhysicsWorld, face2,
            BodyType.KinematicBody, wallFixtureDef);
     final Path path4 = new Path(3).to(682, 223).to(482, 223).to(682, 223);

     face2.registerEntityModifier(new LoopEntityModifier(new PathModifier(30, path4, null, new IPathModifierListener() {
            @Override
            public void onWaypointPassed(final PathModifier pPathModifier, final IEntity pEntity, final int pWaypointIndex) {               
            }
        })));
     this.sPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(face2, bodyRedBall2, true, true){
         @Override
         public void onUpdate(final float pSecondsElapsed) {
                 super.onUpdate(pSecondsElapsed);
                 face2.setPosition(face2.getX(), face2.getY());
         }
 });


      scene.attachChild(face2);          
     scene.registerUpdateHandler(this.sPhysicsWorld);  
  return scene;
}

@Override
public void onLoadComplete() {
}

@Override
public void onAccelerometerChanged(AccelerometerData pAccelerometerData) {
    // TODO Auto-generated method stub
     final Vector2 gravity = Vector2Pool.obtain(pAccelerometerData.getY(), pAccelerometerData.getX());
     this.sPhysicsWorld.setGravity(gravity);
     Vector2Pool.recycle(gravity);
}

解决方案

You can use body.setLinearVelocity(); to move the body, the sprite will automatically follow the body because you have specified a physics connector.

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