public virtual bool CollisionBeginCallback(CCPhysicsContact contact)
{
bool ret = true;
CCPhysicsShape shapeA = contact.GetShapeA();
CCPhysicsShape shapeB = contact.GetShapeB();
CCPhysicsBody bodyA = shapeA.Body;
CCPhysicsBody bodyB = shapeB.Body;
List <CCPhysicsJoint> jointsA = bodyA.GetJoints();
// check the joint is collision enable or not
foreach (CCPhysicsJoint joint in jointsA)
{
if (!Joints.Exists(j => j == joint))
{
continue;
}
if (!joint.IsCollisionEnabled())
{
CCPhysicsBody body = joint.BodyA == bodyA ? joint.BodyB : joint.BodyA;
if (body == bodyB)
{
contact.SetNotificationEnable(false);
return(false);
}
}
}
// bitmask check
if ((shapeA.CategoryBitmask & shapeB.ContactTestBitmask) == 0 ||
(shapeA.ContactTestBitmask & shapeB.CategoryBitmask) == 0)
{
contact.SetNotificationEnable(false);
}
if (shapeA.Group != 0 && shapeA.Group == shapeB.Group)
{
ret = shapeA.Group > 0;
}
else
{
if ((shapeA.CategoryBitmask & shapeB.CollisionBitmask) == 0 ||
(shapeB.CategoryBitmask & shapeA.CollisionBitmask) == 0)
{
ret = false;
}
}
if (contact.IsNotificationEnabled())
{
contact.SetEventCode(EventCode.BEGIN);
contact.SetWorld(this);
Scene.DispatchEvent(contact);
}
return(ret ? contact.ResetResult() : false);
}
