public virtual bool MouseDown(b2Vec2 p)
{
m_mouseWorld = p;
if (m_mouseJoint != null)
{
return false;
}
// Make a small box.
b2AABB aabb = new b2AABB();
b2Vec2 d = new b2Vec2();
d.Set(0.001f, 0.001f);
aabb.LowerBound = p - d;
aabb.UpperBound = p + d;
// Query the world for overlapping shapes.
QueryCallback callback = new QueryCallback(p);
m_world.QueryAABB(callback, aabb);
if (callback.m_fixture != null)
{
b2Body body = callback.m_fixture.Body;
b2MouseJointDef md = new b2MouseJointDef();
md.BodyA = m_groundBody;
md.BodyB = body;
md.target = p;
md.maxForce = 1000.0f * body.Mass;
m_mouseJoint = (b2MouseJoint)m_world.CreateJoint(md);
body.SetAwake(true);
return true;
}
else
{
//Como no ha encontrado un objeto empezamos el arrastre
IsArrastring = true;
originPosition = new CCPoint(p.x, p.y);
return true;
}
}
/// <summary>
/// Query the world for all fixtures that potentially overlap the provided AABB.
/// </summary>
/// <param name="callback">a user implemented callback class.</param>
/// <param name="aabb">the query box.</param>
public virtual void queryAABB(QueryCallback callback, AABB aabb)
{
wqwrapper.broadPhase = m_contactManager.m_broadPhase;
wqwrapper.callback = callback;
m_contactManager.m_broadPhase.query(wqwrapper, aabb);
}
public b2Fixture getTouchedFixture(CCTouch touch)
{
CCPoint screenPos = touch.Location;
b2Vec2 worldPos = ScreenToWorld(screenPos);
// Make a small box around the touched point to query for overlapping fixtures
b2AABB aabb;
b2Vec2 d = new b2Vec2(0.001f, 0.001f);
aabb.LowerBound = worldPos - d;
aabb.UpperBound = worldPos + d;
QueryCallback callback = new QueryCallback(worldPos);
m_world.QueryAABB(callback, aabb);
return callback.m_fixture;
}
