java - 使用 touchDragged 方法后，如何找到 libgdx 中 actor 的新位置？

Question

我需要你的帮助!

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.graphics.Texture;

public class TriAngle extends Figure implements InputProcessor {

    private float w = 800;
    private float h = 600;


    public TriAngle() {

        setTextureRegion(new Texture(Gdx.files.internal("TriAngle.png")));
        setBounds(0, 0, w / 4, h / 4);
        Gdx.input.setInputProcessor(this);
    }
    @Override
    public boolean keyDown(int i) {
        return false;
    }

    @Override
    public boolean keyUp(int i) {
        return false;
    }

    @Override
    public boolean keyTyped(char c) {
        return false;
    }

    @Override
    public boolean touchDown(int screenX, int screenY, int pointer, int button) {

        return true;
    }

    @Override
    public boolean touchUp(int screenX, int screenY, int pointer, int button) {
        return false;
    }

    @Override
    public boolean touchDragged(int screenX, int screenY, int pointer) {
        if(screenX>0&&screenX<200) {
            this.setPosition(screenX, screenY, 0);
        }
        return true;
    }

    @Override
    public boolean mouseMoved(int x, int y) {
      /* if (x >= 0) {
            this.setPosition(x,y);
        }*/

        return true;
    }

    @Override
    public boolean scrolled(int i) {
        return false;
    }
}

在 touchDragged 方法中，仅当鼠标单击位于 0 到 200 之间的 x 坐标时，我才会移动 actor。我需要能够通过单击 actor 当前位置所在的位置来移动 actor。

Answer 1

使用 Actor.getX() 和 Actor.getWidth() 方法，您可以知道其当前位置以及触摸是否发生在其边界内:

@Override
public boolean touchDragged(int screenX, int screenY, int pointer) {
    if(screenX >= getX() && screenX <= getX() + getWidth() &&
        screenY >= getY() && screenY <= getY() + getHeight()) {
        this.setPosition(screenX, screenY, 0);
    }
    return true;
}