Example #1
0
    public MyLayer() {
      WYSize s = Director.getInstance().getWindowSize();
      Chipmunk chipmunk = Chipmunk.make();
      chipmunk.setDebugDraw(true);
      chipmunk.setPosition(s.width / 2, s.height / 2);
      addChild(chipmunk);

      mRandom = new Random();

      Shape.resetShapeIdCounter();

      mSpace = chipmunk.getSpace();
      mSpace.setIterations(5);
      mSpace.setGravity(0, -100);
      mSpace.resizeActiveHash(40f, 999);
      mSpace.resizeStaticHash(30f, 2999);

      Body staticBody = Body.make(Float.MAX_VALUE, Float.MAX_VALUE);

      // Create vertexes for a pentagon shape.
      WYPoint[] verts = new WYPoint[5];
      for (int i = 0; i < NUM_VERTS; i++) {
        float angle = -2 * (float) Math.PI * i / (NUM_VERTS);
        verts[i] = WYPoint.make(10 * (float) cos(angle), 10 * (float) sin(angle));
      }

      // Vertexes for a triangle shape.
      WYPoint tris[] = {WYPoint.make(-15, -15), WYPoint.make(0, 10), WYPoint.make(15, -15)};

      // Create the static triangles.
      for (int i = 0; i < 9; i++) {
        for (int j = 0; j < 6; j++) {
          float stagger = (j % 2) * 40;
          WYPoint offset = WYPoint.make(i * 80 - s.width / 2 + stagger, j * 70 - s.width / 2);
          Poly shape = Poly.make(staticBody, tris, offset);
          shape.setRestitution(1f);
          shape.setFriction(1f);
          shape.setLayerMask(Chipmunk.NOT_GRABABLE_MASK);
          mSpace.addStaticShape(shape);
        }
      }

      // Add lots of pentagons
      float moment = Chipmunk.calculateMomentForPoly(1f, verts, WYPoint.makeZero());
      for (int i = 0; i < 50; i++) {
        Body body = Body.make(1f, moment);
        float x = frand() * s.width - s.width / 2;
        body.setPosition(x, s.height / 2 * 5 / 7);
        mSpace.addBody(body);

        Poly shape = Poly.make(body, verts, WYPoint.makeZero());
        shape.setFriction(0.4f);
        mSpace.addShape(shape);
      }

      schedule(new TargetSelector(this, "update(float)", new Object[] {0f}));
    }
Example #2
0
/** \if English Result of collision detection \else 碰撞检测的结果 \endif */
public class CDResult {
  /** \if English collision point count \else 碰撞点个数 \endif */
  public int pointCount = 0;

  /**
   * \if English collision points, max is two and they are in world coordinates \else 碰撞点数组,
   * 最多两个且用的是全局坐标 \endif
   */
  public WYPoint[] points = new WYPoint[] {WYPoint.makeZero(), WYPoint.makeZero()};

  /**
   * \if English normal of collision, in world coordinate. It points from first node to second node.
   * \else 碰撞方向, 以全局坐标表示. 总是从第一个节点指向第二个节点. \endif
   */
  public WYPoint normal = WYPoint.makeZero();

  /** \if English reset result object to all zero \else 重置所有数据为0 \endif */
  public void clear() {
    pointCount = 0;
    points[0].x = points[0].y = points[1].x = points[1].y = 0;
    normal.x = normal.y = 0;
  }

  /**
   * \if English Get float array of collision points
   *
   * @return float array of collision points \else 得到碰撞点的浮点数组表示形式
   * @return 碰撞点的浮点数组 \endif
   */
  public float[] getPoints() {
    if (pointCount == 1) return new float[] {points[0].x, points[0].y};
    else if (pointCount == 2)
      return new float[] {points[0].x, points[0].y, points[1].x, points[1].y};
    else return new float[0];
  }
}
Example #3
0
 /**
  * \if English Map a clip to external atlas texture
  *
  * @param fromClipIndex source clip index
  * @param tex external texture \else 映射一个分片到外部的图片集上
  * @param fromClipIndex 被映射的分片索引
  * @param tex 图片集的贴图对象 \endif
  */
 public void mapClip(int fromClipIndex, Texture2D tex) {
   mapClip(fromClipIndex, tex, WYPoint.makeZero());
 }
Example #4
0
 /** Get the global gravity vector. */
 public WYPoint getGravity() {
   WYPoint p = WYPoint.makeZero();
   nativeGetGravity(p);
   return p;
 }
Example #5
0
 /**
  * \if English get pin point
  *
  * @return global coordinate of pin point \else 得到pin point
  * @return pin point的全局坐标 \endif
  */
 public WYPoint getPinPoint() {
   WYPoint p = WYPoint.makeZero();
   nativeGetPinPoint(p);
   return p;
 }