Question

我试图用LibGdx Tiled和Box2D为Android创建一个小型侧卷轴。我正在使用Object Layer来解决Player和World之间的冲突。如果我使用矩形作为对象图层，这工作正常。但是，当我尝试使用Polygones时，碰撞不起作用。我究竟做错了什么。（为拼写错误而烦恼）

这是我的代码：

>>> import csv
>>> f = open('myclone.csv', 'rb')
>>> reader = csv.reader(f)
>>> headers = reader.next()
>>> headers
['workers', 'constant', 'age']
>>> column = {}
>>> for h in headers:
...    column[h] = []
...
>>> column
{'workers': [], 'constant': [], 'age': []}
>>> for row in reader:
...   for h, v in zip(headers, row):
...     column[h].append(v)
...
>>> column
{'workers': ['w0', 'w1', 'w2', 'w3'], 'constant': ['7.334', '5.235', '3.2225', '0'], 'age': ['-1.406', '-4.936', '-1.478', '0']}
>>> column['workers']
['w0', 'w1', 'w2', 'w3']
>>> column['constant']
['7.334', '5.235', '3.2225', '0']
>>> column['age']
['-1.406', '-4.936', '-1.478', '0']
>>>

Answer 1

我自己最终解决了这个问题。

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;
    }

LibGdX Tiled Map Box2d与Polygon Map Object的碰撞

1 个答案: