LibGdx: How to Implement Gestures on Actors
I am trying to implement gestures on Actors in LibGdx using ActorGestureListener. The following code draws the actor, but the pan method is not called. Did I miss something?
I am using LibGdx 1.3.1.
public class MyApp extends ApplicationAdapter {
private Stage stage;
@Override
public void create() {
stage = new Stage(new ExtendViewport(Gdx.graphics.getWidth(), Gdx.graphics.getHeight()));
Gdx.input.setInputProcessor(stage);
final Shape circle = new Circle(); // Actor that draws a texture
stage.addActor(circle);
circle.addListener(new ActorGestureListener(){
public void pan (InputEvent event, float x, float y, float deltaX, float deltaY) {
Gdx.app.log("", "pan");
event.getTarget().moveBy(deltaX, deltaY);
}
});
circle.setTouchable(Touchable.enabled);
}
@Override
public void render() {
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
stage.act(Gdx.graphics.getDeltaTime());
stage.draw();
}
}
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1 answer
If you inherit from Actor, you need to set the bounds or it will not be click/touch-able!.
Simply set the bounds to match the texture your Actor contains.
//add this Set bounds the x, y, width, and height
circle.setBounds(0, 0,texture.getWidth(),
texture.getHeight());
//add this Sets the origin position which is relative to the actor bottom left corner.
circle.setOrigin(0, 0);
stage.addActor(circle);
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