Question

我有一个舞台和演员，大小为200x200。我需要演员抓住触摸事件来进行一些计算。但问题是触摸事件只有在触及actor绑定时触发。我怎样才能触摸屏幕的任何区域，但是在演员的课堂内处理？

public class MyActor extends Actor {

public MyActor() {

    setBounds(100f, 100f, 200f, 200f);

    addListener(new InputListener() {
        @Override
        public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
            return super.touchDown(event, x, y, pointer, button);
        }

        @Override
        public void touchDragged(InputEvent event, float x, float y, int pointer) {
            super.touchDragged(event, x, y, pointer);
        }

        @Override
        public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
            super.touchUp(event, x, y, pointer, button);
        }
    });
}

Answer 1

在舞台上添加侦听器而不是任何特定的Actor

stage.addListener(new InputListener(){

            @Override
            public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {

                Gdx.app.log("Stage Listener","inside touch down");
                return super.touchDown(event, x, y, pointer, button);
            }

            @Override
            public void touchDragged(InputEvent event, float x, float y, int pointer) {


                super.touchDragged(event, x, y, pointer);
            }

            @Override
            public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
                super.touchUp(event, x, y, pointer, button);
            }
        });

修改

在MyActor侦听器tocuhDown(..)方法
中所有必需的Actor和句柄上的Fire事件
stage.addListener(new InputListener(){ @Override public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) { for(Actor actor:stage.getActors()){ if(actor.getName().equals("MyActor")) { InputEvent myEvent=new InputEvent(); myEvent.setType(InputEvent.Type.touchDown); myEvent.setStage(stage); myEvent.setPointer(pointer); myEvent.setButton(button); myEvent.setStageX(x); myEvent.setStageY(y); actor.fire(myEvent); } } return super.touchDown(event,x,y,pointer,button); } });

MyActor上课

public class MyActor extends Actor { public MyActor(){ setBounds(100f, 100f, 200f, 200f); setName("MyActor"); addListener(new InputListener() { @Override public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) { Gdx.app.log("MyActor","touched"); event.stop(); return false; } }); } }

LibGDX如何捕捉actor界限之外的触摸事件

1 个答案: