Question

我在Box2d遇到了问题我是Box2d的新手，所以无法处理我的播放器的移动。我想在用户触摸游戏中的左右按钮时向左和向右移动我的播放器。在我的游戏玩家已经通过向上y轴。我希望在控制玩家的同时看到炫酷流畅的动画我无法将我的播放器向左移动，我该怎么做？提前谢谢

// EDITED

我创建了一个用于测试的夹具，我可以移动夹具但不能移动我的播放器。如何将我的玩家精灵附加到身体？我必须找到一种控制身体的正确方法。一旦你开始它就不会停止。这是我的代码

public World world;
public Body bplayer;
public Box2DDebugRenderer b2dr;
public Matrix4 cameraBox2D;

播放屏幕

buttonimage.addListener(new ClickListener() {
    public boolean touchDown(InputEvent event, float x, float y, int pointer, int button)
    {

    bplayer.setLinearVelocity(-5*PPM , 0);



    return true;
    }
});
world = new World(new Vector2(player.getPosition().x , player.getPosition().y) , false);
b2dr = new Box2DDebugRenderer();
bplayer = createPlayer(player.getPosition().x , player.getPosition().y);

show method

buttonimage.setPosition(160,0);
rightbuttonimage.setPosition(320,0);
pauseimage.setPosition(220,-20);
cameraBox2D = camera.combined.cpy();

渲染方法

Gdx.gl.glClearColor(0, 0, 2f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);


sb.setProjectionMatrix(camera.combined);

player.position.y += 500 * Gdx.graphics.getDeltaTime();
sb.begin();
sb.draw(bg, 0, camera.position.y - (camera.viewportHeight/2));
sb.draw(player.sprite, player.getPosition().x , player.getPosition().y);
for (Tube tube : tubes) {
    sb.draw(tube.getlefttube(), tube.getposlefttube().x, tube.getposlefttube().y);
    sb.draw(tube.getrighttube(), tube.getposrighttube().x, tube.getposrighttube().y);
    sb.draw(tube.getLight() , tube.getPoslight().x , tube.getPoslight().y);
}





delta*=speed;
sb.end();

update(delta);
b2dr.render(world , cameraBox2D);
stage.draw();

app.batch.begin();
app.font23.draw(app.batch,"Lights collected :" + dropsGathered , 0, 720);
app.batch.end();

cameraUpdate方法

Vector3 position = camera.position;
position.x = player.position.x;
position.y = player.position.y;
camera.position.set(position);

createPlayer方法

Body pBody;
BodyDef def = new BodyDef();
def.type = BodyDef.BodyType.DynamicBody;
def.position.set(x * PPM, y * PPM  );
def.fixedRotation = true;
pBody = world.createBody(def);

return pBody;

更新方法

world.step(1 / 60f , 6 , 2);

for(int i = 0; i < tubes.size; i++) {

    Tube tube = tubes.get(i);

    if (camera.position.y - (camera.viewportWidth/2) > tube.getposlefttube().y + tube.getlefttube().getWidth()) {
        tube.reposition(tube.getposlefttube().y + ( TUBE_COUNT) );

    }

    if (tube.collides(player.getBounds())){
        app.setScreen(new GameOver(app));


    }

    if (tube.gathered(player.getBounds())){

            dropsGathered++;




    }

    if (dropsGathered >= 50){
        //app.setScreen(new Stage2(app));
    }


}
camera.update();

handleInput();
camera.position.y = player.getPosition().y + 300;
player.update(delta);
camera.update();

cameraUpdate(delta);

stage.act(delta);

Answer 1

在createPlayer方法中，您可以执行body.setUserData(sprite)。然后在渲染方法中，您可以执行此操作（类似于渲染管的方式）：

for (Body body : bodies) {
   Sprite playerSprite = (Sprite) body.getUserData();
   playerSprite.setPosition(body.getPosition().x, body.getPosition().y);
   playerSprite.draw(spriteBatch);
}

这将使用正文的位置更新精灵的位置。

Libgdx Box2d Player不动

1 个答案: