Ejemplo n.º 1
0
 public boolean processGestureEvent(MTGestureEvent ge) {
   DragEvent de = (DragEvent) ge;
   try {
     Body body = (Body) comp.getUserData("box2d");
     MouseJoint mouseJoint;
     Vector3D to = new Vector3D(de.getTo());
     // Un-scale position from mt4j to box2d
     PhysicsHelper.scaleDown(to, scale);
     switch (de.getId()) {
       case DragEvent.GESTURE_STARTED:
         comp.sendToFront();
         body.wakeUp();
         body.setXForm(new Vec2(to.x, to.y), body.getAngle());
         mouseJoint = PhysicsHelper.createDragJoint(world, body, to.x, to.y);
         comp.setUserData(comp.getID(), mouseJoint);
         break;
       case DragEvent.GESTURE_UPDATED:
         mouseJoint = (MouseJoint) comp.getUserData(comp.getID());
         if (mouseJoint != null) {
           boolean onCorrectGameSide =
               ((MTComponent) de.getTarget()).containsPointGlobal(de.getTo());
           // System.out.println(((MTComponent)de.getTargetComponent()).getName()  + " Contains
           // " + to + " -> " + contains);
           if (onCorrectGameSide) {
             mouseJoint.setTarget(new Vec2(to.x, to.y));
           }
         }
         break;
       case DragEvent.GESTURE_ENDED:
         mouseJoint = (MouseJoint) comp.getUserData(comp.getID());
         if (mouseJoint != null) {
           comp.setUserData(comp.getID(), null);
           // Only destroy the joint if it isnt already (go through joint list and check)
           for (Joint joint = world.getJointList(); joint != null; joint = joint.getNext()) {
             JointType type = joint.getType();
             switch (type) {
               case MOUSE_JOINT:
                 MouseJoint mj = (MouseJoint) joint;
                 if (body.equals(mj.getBody1()) || body.equals(mj.getBody2())) {
                   if (mj.equals(mouseJoint)) {
                     world.destroyJoint(mj);
                   }
                 }
                 break;
               default:
                 break;
             }
           }
         }
         mouseJoint = null;
         break;
       default:
         break;
     }
   } catch (Exception e) {
     System.err.println(e.getMessage());
   }
   return false;
 }
Ejemplo n.º 2
0
  private void drawJoint(Joint joint) {
    Body bodyA = joint.getBodyA();
    Body bodyB = joint.getBodyB();
    Transform xf1 = bodyA.getTransform();
    Transform xf2 = bodyB.getTransform();
    Vec2 x1 = xf1.p;
    Vec2 x2 = xf2.p;
    Vec2 p1 = pool.popVec2();
    Vec2 p2 = pool.popVec2();
    joint.getAnchorA(p1);
    joint.getAnchorB(p2);

    color.set(0.5f, 0.8f, 0.8f);

    switch (joint.getType()) {
        // TODO djm write after writing joints
      case DISTANCE:
        m_debugDraw.drawSegment(p1, p2, color);
        break;

      case PULLEY:
        {
          PulleyJoint pulley = (PulleyJoint) joint;
          Vec2 s1 = pulley.getGroundAnchorA();
          Vec2 s2 = pulley.getGroundAnchorB();
          m_debugDraw.drawSegment(s1, p1, color);
          m_debugDraw.drawSegment(s2, p2, color);
          m_debugDraw.drawSegment(s1, s2, color);
        }
        break;
      case CONSTANT_VOLUME:
      case MOUSE:
        // don't draw this
        break;
      default:
        m_debugDraw.drawSegment(x1, p1, color);
        m_debugDraw.drawSegment(p1, p2, color);
        m_debugDraw.drawSegment(x2, p2, color);
    }
    pool.pushVec2(2);
  }