无法看到Box2DdebugRenderer的身体轮廓
问题描述:
我现在暂时使用box2ddebugrenderer将身体呈现到世界中,但我无法看到运行时在世界中创建的物体的单色轮廓。无法看到Box2DdebugRenderer的身体轮廓
这是我的游戏屏幕的代码:
public class GameScreen implements Screen {
static final int VIEWPORT_WIDTH = 20;
static final int VIEWPORT_HEIGHT = 13;
World world;
Body ground;
final float TIME_STEP = 1/300f;
float accumulator = 0f;
OrthographicCamera camera;
private Box2DDebugRenderer renderer;
@Override
public void render(float delta) {
//Clear the screen
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
renderer.render(world, camera.combined);
accumulator += delta;
while (accumulator >= delta) {
world.step(TIME_STEP, 6, 2);
accumulator -= TIME_STEP;
}
}
@Override
public void show() {
world = createWorld();
ground = createGround(world);
renderer = new Box2DDebugRenderer();
camera = new OrthographicCamera(VIEWPORT_WIDTH, VIEWPORT_HEIGHT);
camera.position.set(camera.viewportWidth/2, camera.viewportHeight/2, 0f);
camera.update();
}
public World createWorld() {
return new World(Constants.WORLD_GRAVITY, true);
}
public Body createGround(World world) {
BodyDef bodyDef = new BodyDef();
bodyDef.position.set(new Vector2(Constants.GROUND_X, Constants.GROUND_Y));
Body body = world.createBody(bodyDef);
PolygonShape shape = new PolygonShape();
shape.setAsBox(Constants.GROUND_WIDTH/2, Constants.GROUND_HEIGHT/2);
body.createFixture(shape, Constants.GROUND_DENSITY);
shape.dispose();
return body;
}
}
答
需要BodyDef定义物理身体的体形
BodyDef bodyDef=new BodyDef();
bodyDef.BodyType= BodyType.STATIC;
不同的恒定的值要适当,使身体趴在相机内像你一样的视口
Constants.GROUND_X,
Constants.GROUND_Y,
Constants.GROUND_WIDTH,
Constants.GROUND_HEIGHT
创建小体和检查,身体轮廓是否可见。
之后,仍然如果你在屏幕上没有任何东西使用SpriteBatch绘制简单的雪碧。
另外一个条件
可能是您在您的Child Game类中重写了Game的渲染方法,而不是调用父级渲染方法。