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;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
Vec2 p = new Vec2(event.getX(), event.getY());
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_UP:
if (mouseJoint != null) {
myWorld.getWorld().destroyJoint(mouseJoint);
mouseJoint = null;
}
break;
case MotionEvent.ACTION_MOVE:
if (mouseJoint != null) {
mouseJoint.setTarget(p);
break;
}
queryAABB.lowerBound.set(p.x - .001f, p.y - .001f);
queryAABB.upperBound.set(p.x + .001f, p.y + .001f);
callback.point.set(p);
callback.fixture = null;
myWorld.getWorld().queryAABB(callback, queryAABB);
if (callback.fixture != null) {
Body body = callback.fixture.getBody();
XKPPhysicBody physicBody = (XKPPhysicBody) body.getUserData();
if (!physicBody.getMouseJoint()) break;
MouseJointDef def = new MouseJointDef();
def.bodyA = groundBody;
def.bodyB = body;
def.target.set(p);
def.maxForce = 3000f * body.getMass();
def.dampingRatio = 0;
def.frequencyHz = 1000;
mouseJoint = (MouseJoint) myWorld.getWorld().createJoint(def);
body.setAwake(true);
}
break;
}
return super.onTouchEvent(event);
}