private void spawnMouseJoint(Vec2 p)
{
if (mouseJoint != null)
{
return;
}
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;
m_world.queryAABB(callback, queryAABB);
if (callback.fixture != null)
{
Body body = callback.fixture.getBody();
MouseJointDef def = new MouseJointDef();
def.bodyA = groundBody;
def.bodyB = body;
def.collideConnected = true;
def.target.set(p);
def.maxForce = 1000f*body.getMass();
mouseJoint = (MouseJoint) m_world.createJoint(def);
body.setAwake(true);
}
}
public void sayGoodbye(Joint joint)
{
if (mouseJoint == joint)
{
mouseJoint = null;
}
else
{
jointDestroyed(joint);
}
}
private void destroyMouseJoint()
{
if (mouseJoint != null)
{
m_world.destroyJoint(mouseJoint);
mouseJoint = null;
}
}
public void init(TestbedModel model)
{
this.model = model;
Vec2 gravity = new Vec2(0, -10f);
m_world = model.getWorldCreator().createWorld(gravity);
m_world.setParticleGravityScale(0.4f);
m_world.setParticleDensity(1.2f);
bomb = null;
mouseJoint = null;
mouseTracing = false;
mouseTracerPosition.setZero();
mouseTracerVelocity.setZero();
BodyDef bodyDef = new BodyDef();
groundBody = m_world.createBody(bodyDef);
init(m_world, false);
}