LibGDX -自行旋转SpriteBatch

Question

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我想在点击一个按钮后旋转这个SpriteBatch。

@Override
public void render() {

    SpriteBatch batch = new SpriteBatch();

    batch.begin();
    batch.draw(gemTexture, 10, 10, 100, 100);
    batch.end();

    if (Gdx.input.isTouched()) {
        rotateRight();
    }

}

private void rotateRight() {
// How do I rotate it to look like 
}

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Answer 1

您正在使用SpriteBatch绘制纹理。纹理不支持旋转。我建议雪碧类可能更适合您所要做的事情。这是你可能做的事情的大致轮廓..。有关更多细节，请参见雪碧javadoc。

private void createGemSprite() {
    gemSprite = new Sprite(gemTexture);
    gemSprite.setPosition(10, 10);
}

@Override
public void render() {

    SpriteBatch batch = new SpriteBatch();

    batch.begin();
    gemSprite.draw(batch);
    batch.end();

    if (Gdx.input.isTouched()) {
        rotateRight();
    }
}

private void rotateRight() {
    gemSprite.setRotation(gemSprite.getRotation() - 90);
}