我想在点击它时使 Sprite move ，但我有一个问题...... Sprite 总是 move 到左上角，我试图输入随机值，但它没有给出结果
ballITexture = TextureRegionFactory.extractFromTexture(BaseActivity.getSharedInstance().ballTexture);
final Random rand = new Random();
sprite = new Sprite(0, 0, ballITexture, BaseActivity.getSharedInstance().getVertexBufferObjectManager()){
@Override
public boolean onAreaTouched(TouchEvent pSceneTouchEvent, float pTouchAreaLocalX, float pTouchAreaLocalY) {
randomMove(rand.nextInt(4), pTouchAreaLocalX, pTouchAreaLocalY, this);
};
mCamera = BaseActivity.getSharedInstance().mCamera;
sprite.setPosition(mCamera.getWidth() / 2 - sprite.getWidth() / 2, mCamera.getHeight() / 2 - sprite.getHeight() / 2);
moveable = true;
这是 randomMove 方法:
private void randomMove(int direction, float pTouchAreaLocalX, float pTouchAreaLocalY, Sprite sprite){
switch(direction){
case 0:
sprite.registerEntityModifier(new MoveModifier(1, pTouchAreaLocalX, 1, pTouchAreaLocalY, 1));
break;
case 1:
sprite.registerEntityModifier(new MoveModifier(1, pTouchAreaLocalX, 1, pTouchAreaLocalY, -1));
break;
case 2:
sprite.registerEntityModifier(new MoveModifier(1, pTouchAreaLocalX, -1, pTouchAreaLocalY, 1));
break;
case 3:
sprite.registerEntityModifier(new MoveModifier(1, pTouchAreaLocalX, -1, pTouchAreaLocalY, -1));
break;
}
}
我的问题是，为什么我的 Sprite 在我触摸它时总是 move 到左上角，而不是随机 move ？如何解决？
最佳答案
算了，我给 MoveModifier 传递了不正确的参数，我把 1 和 -1 值应该是相机的任何像素
private void randomMove(int direction, float pTouchAreaLocalX, float pTouchAreaLocalY, Sprite sprite){
sprite.registerEntityModifier(new MoveModifier(1, pTouchAreaLocalX, rand.nextInt(mCamera.getWidth()), pTouchAreaLocalY, rand.nextInt(mCamera.getHeight())));
关于android - Andengine，让 Sprite 随机 move ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13110312/