我有一个用触摸板旋转的精灵。我遇到的唯一问题是,当触摸板不移动时,旋转停止。即使触摸板处于 100% Y 值,如果它保持不动,精灵旋转也会停止。无论触摸板是否移动,如何保持旋转不变?我的代码如下
public class RotationTest implements ApplicationListener {
private OrthographicCamera camera;
private SpriteBatch batch;
private Texture texture;
private Sprite sprite;
Stage stage;
public boolean leonAiming = true;
@Override
public void create() {
float w = Gdx.graphics.getWidth();
float h = Gdx.graphics.getHeight();
camera = new OrthographicCamera(1, h/w);
batch = new SpriteBatch();
texture = new Texture(Gdx.files.internal("data/libgdx.png"));
texture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
TextureRegion region = new TextureRegion(texture, 0, 0, 512, 275);
sprite = new Sprite(region);
sprite.setSize(0.9f, 0.9f * sprite.getHeight() / sprite.getWidth());
sprite.setOrigin(sprite.getWidth()/2, sprite.getHeight()/2);
sprite.setPosition(-sprite.getWidth()/2, -sprite.getHeight()/2);
stage = new Stage();
Gdx.input.setInputProcessor(stage);
Skin skin = new Skin(Gdx.files.internal("data/uiskin.json"));
Texture touchpadTexture = new Texture(Gdx.files.internal("data/touchpad.png"));
touchpadTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
TextureRegion background = new TextureRegion(touchpadTexture, 0, 0, 75, 75);
TextureRegion knob = new TextureRegion(touchpadTexture, 80, 0, 120, 120);
TextureRegionDrawable backgroundDrawable = new TextureRegionDrawable(background);
TextureRegionDrawable knobDrawable = new TextureRegionDrawable(knob);
final Touchpad touchpad = new Touchpad(10, new Touchpad.TouchpadStyle(backgroundDrawable, knobDrawable));
ChangeListener listener = null;
touchpad.addListener(new ChangeListener() {
@Override
public void changed(ChangeEvent event, Actor actor) {
sprite.rotate(touchpad.getKnobPercentY());
}
});
touchpad.setBounds(15, 15, 225, 225);
stage.addActor(touchpad);
}
@Override
public void dispose() {
batch.dispose();
texture.dispose();
}
@Override
public void render() {
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
batch.setProjectionMatrix(camera.combined);
batch.begin();
sprite.draw(batch);
batch.end();
stage.act();
stage.draw();
}
谢谢你的帮助!