Example #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;
 }
Example #2
0
  /** Call this to draw shapes and other debug draw data. */
  public void drawDebugData() {
    if (m_debugDraw == null) {
      return;
    }

    int flags = m_debugDraw.getFlags();

    if ((flags & DebugDraw.e_shapeBit) == DebugDraw.e_shapeBit) {
      for (Body b = m_bodyList; b != null; b = b.getNext()) {
        xf.set(b.getTransform());
        for (Fixture f = b.getFixtureList(); f != null; f = f.getNext()) {
          if (b.isActive() == false) {
            color.set(0.5f, 0.5f, 0.3f);
            drawShape(f, xf, color);
          } else if (b.getType() == BodyType.STATIC) {
            color.set(0.5f, 0.9f, 0.3f);
            drawShape(f, xf, color);
          } else if (b.getType() == BodyType.KINEMATIC) {
            color.set(0.5f, 0.5f, 0.9f);
            drawShape(f, xf, color);
          } else if (b.isAwake() == false) {
            color.set(0.5f, 0.5f, 0.5f);
            drawShape(f, xf, color);
          } else {
            color.set(0.9f, 0.7f, 0.7f);
            drawShape(f, xf, color);
          }
        }
      }
    }

    if ((flags & DebugDraw.e_jointBit) == DebugDraw.e_jointBit) {
      for (Joint j = m_jointList; j != null; j = j.getNext()) {
        drawJoint(j);
      }
    }

    if ((flags & DebugDraw.e_pairBit) == DebugDraw.e_pairBit) {
      color.set(0.3f, 0.9f, 0.9f);
      for (Contact c = m_contactManager.m_contactList; c != null; c = c.getNext()) {
        // Fixture fixtureA = c.getFixtureA();
        // Fixture fixtureB = c.getFixtureB();
        //
        // fixtureA.getAABB(childIndex).getCenterToOut(cA);
        // fixtureB.getAABB().getCenterToOut(cB);
        //
        // m_debugDraw.drawSegment(cA, cB, color);
      }
    }

    if ((flags & DebugDraw.e_aabbBit) == DebugDraw.e_aabbBit) {
      color.set(0.9f, 0.3f, 0.9f);

      for (Body b = m_bodyList; b != null; b = b.getNext()) {
        if (b.isActive() == false) {
          continue;
        }

        for (Fixture f = b.getFixtureList(); f != null; f = f.getNext()) {

          for (int i = 0; i < f.m_proxyCount; ++i) {
            FixtureProxy proxy = f.m_proxies[i];
            AABB aabb = m_contactManager.m_broadPhase.getFatAABB(proxy.proxyId);
            Vec2[] vs = avs.get(4);
            vs[0].set(aabb.lowerBound.x, aabb.lowerBound.y);
            vs[1].set(aabb.upperBound.x, aabb.lowerBound.y);
            vs[2].set(aabb.upperBound.x, aabb.upperBound.y);
            vs[3].set(aabb.lowerBound.x, aabb.upperBound.y);

            m_debugDraw.drawPolygon(vs, 4, color);
          }
        }
      }
    }

    if ((flags & DebugDraw.e_centerOfMassBit) == DebugDraw.e_centerOfMassBit) {
      for (Body b = m_bodyList; b != null; b = b.getNext()) {
        xf.set(b.getTransform());
        xf.p.set(b.getWorldCenter());
        m_debugDraw.drawTransform(xf);
      }
    }

    if ((flags & DebugDraw.e_dynamicTreeBit) == DebugDraw.e_dynamicTreeBit) {
      m_contactManager.m_broadPhase.drawTree(m_debugDraw);
    }
  }