LibGdX Tiled Map Box2d 与多边形地图对象的碰撞

Question

我正在尝试使用 LibGdx Tiled 和 Box2D 为 Android 创建一个小型侧滚动条。 我正在使用对象层来获取玩家和世界之间的碰撞。 如果我使用矩形作为对象层，这工作正常。 但是当我尝试使用多边形时，碰撞不起作用。 我究竟做错了什么。 （抱歉拼写错误）

这是我的代码：

for(MapObject object : map.getLayers().get(5).getObjects()){
            if(object instanceof RectangleMapObject) {
                Rectangle rect = ((RectangleMapObject) object).getRectangle();

            bdef.type = BodyDef.BodyType.StaticBody;
            bdef.position.set((rect.getX() + rect.getWidth() / 2) / AoF.PPM, (rect.getY() + rect.getHeight() / 2) / AoF.PPM);

            body = world.createBody(bdef);

            shape.setAsBox(rect.getWidth() / 2 / AoF.PPM, rect.getHeight() / 2 / AoF.PPM);
            fdef.shape = shape;
            body.createFixture(fdef);
        }
        if(object instanceof PolygonMapObject){
           float[] vertices = ((PolygonMapObject) object).getPolygon().getTransformedVertices();
            float[] worldVertices = new float[vertices.length];

            for (int i = 0; i < vertices.length; ++i) {
                worldVertices[i] = vertices[i] / AoF.PPM;
            }

            shape.set(worldVertices);
            bdef.type = BodyDef.BodyType.StaticBody;

            body = world.createBody(bdef);
            fdef.shape = shape;
            body.createFixture(fdef);
        }

Answer 1

我终于自己修好了。

for(MapObject object : map.getLayers().get(5).getObjects()){

         Shape shape;
        if (object instanceof RectangleMapObject) {
            shape = getRectangle((RectangleMapObject)object);
        }
        else if (object instanceof PolygonMapObject) {
            shape = getPolygon((PolygonMapObject)object);
        }
        else if (object instanceof PolylineMapObject) {
            shape = getPolyline((PolylineMapObject)object);
        }
        else if (object instanceof CircleMapObject) {
            shape = getCircle((CircleMapObject)object);
        }
        else {
            continue;
        }
            bdef.type = BodyDef.BodyType.StaticBody;
            body = world.createBody(bdef);
            fdef.shape = shape;
            body.createFixture(fdef);
        }


private static PolygonShape getRectangle(RectangleMapObject rectangleObject) {
        Rectangle rectangle = rectangleObject.getRectangle();
        PolygonShape polygon = new PolygonShape();
        Vector2 size = new Vector2((rectangle.x + rectangle.width * 0.5f) / AoF.PPM,
                (rectangle.y + rectangle.height * 0.5f ) / AoF.PPM);
        polygon.setAsBox(rectangle.width * 0.5f /AoF.PPM,
                rectangle.height * 0.5f / AoF.PPM,
                size,
                0.0f);
        return polygon;
    }

    private static CircleShape getCircle(CircleMapObject circleObject) {
        Circle circle = circleObject.getCircle();
        CircleShape circleShape = new CircleShape();
        circleShape.setRadius(circle.radius / AoF.PPM);
        circleShape.setPosition(new Vector2(circle.x / AoF.PPM, circle.y / AoF.PPM));
        return circleShape;
    }

    private static PolygonShape getPolygon(PolygonMapObject polygonObject) {
        PolygonShape polygon = new PolygonShape();
        float[] vertices = polygonObject.getPolygon().getTransformedVertices();

        float[] worldVertices = new float[vertices.length];

        for (int i = 0; i < vertices.length; ++i) {
            System.out.println(vertices[i]);
            worldVertices[i] = vertices[i] / AoF.PPM;
        }

        polygon.set(worldVertices);
        return polygon;
    }

    private static ChainShape getPolyline(PolylineMapObject polylineObject) {
        float[] vertices = polylineObject.getPolyline().getTransformedVertices();
        Vector2[] worldVertices = new Vector2[vertices.length / 2];

        for (int i = 0; i < vertices.length / 2; ++i) {
            worldVertices[i] = new Vector2();
            worldVertices[i].x = vertices[i * 2] / AoF.PPM;
            worldVertices[i].y = vertices[i * 2 + 1] / AoF.PPM;
        }

        ChainShape chain = new ChainShape();
        chain.createChain(worldVertices);
        return chain;
    }