3 files changed, 32 insertions, 0 deletions

diff --git a/source/gameengine/Ketsji/KX_GameObject.cpp b/source/gameengine/Ketsji/KX_GameObject.cpp
index 04a806dfd92..5b8d5fbfe1f 100644
--- a/source/gameengine/Ketsji/KX_GameObject.cpp
+++ b/source/gameengine/Ketsji/KX_GameObject.cpp
@@ -481,6 +481,19 @@ void KX_GameObject::ActivateGraphicController(bool recurse)
 	}
 }
 
+void KX_GameObject::SetUserCollisionGroup(short group)
+{
+	m_userCollisionGroup = group;
+}
+void KX_GameObject::SetUserCollisionMask(short mask)
+{
+	m_userCollisionMask = mask;
+}
+
+bool KX_GameObject::CheckCollision(KX_GameObject* other)
+{
+	return this->m_userCollisionGroup & other->m_userCollisionMask;
+}
 
 CValue* KX_GameObject::GetReplica()
 {
diff --git a/source/gameengine/Ketsji/KX_GameObject.h b/source/gameengine/Ketsji/KX_GameObject.h
index 2b0d13ff2f7..569a4a2b2a1 100644
--- a/source/gameengine/Ketsji/KX_GameObject.h
+++ b/source/gameengine/Ketsji/KX_GameObject.h
@@ -98,6 +98,10 @@ protected:
 	bool								m_bIsNegativeScaling;
 	MT_Vector4							m_objectColor;
 
+	// Bit fields for user control over physics collisions
+	short								m_userCollisionGroup;
+	short								m_userCollisionMask;
+
 	// visible = user setting
 	// culled = while rendering, depending on camera
 	bool       							m_bVisible; 
@@ -464,6 +468,13 @@ public:
 	 * @add/remove the graphic controller to the physic system
 	 */
 	void ActivateGraphicController(bool recurse);
+	
+	void SetUserCollisionGroup(short filter);
+	void SetUserCollisionMask(short mask);
+	/**
+	 * Extra broadphase check for user controllable collisions
+	 */
+	bool CheckCollision(KX_GameObject *other);
 
 	/**
 	 * \section Coordinate system manipulation functions
diff --git a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
index 5d28bf47401..49652ef9544 100644
--- a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
+++ b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
@@ -2214,11 +2214,19 @@ void	CcdPhysicsEnvironment::CallbackTriggers()
 bool CcdOverlapFilterCallBack::needBroadphaseCollision(btBroadphaseProxy* proxy0,btBroadphaseProxy* proxy1) const
 {
 	btCollisionObject *colObj0, *colObj1;
+	KX_GameObject *gameObj0 = KX_GameObject::GetClientObject((KX_ClientObjectInfo*)((CcdPhysicsController*)((btCollisionObject*)proxy0->m_clientObject)->getUserPointer())->getNewClientInfo());
+	KX_GameObject *gameObj1 = KX_GameObject::GetClientObject((KX_ClientObjectInfo*)((CcdPhysicsController*)((btCollisionObject*)proxy1->m_clientObject)->getUserPointer())->getNewClientInfo());
 	CcdPhysicsController *sensorCtrl, *objCtrl;
+
 	bool collides;
 	// first check the filters
 	collides = (proxy0->m_collisionFilterGroup & proxy1->m_collisionFilterMask) != 0;
 	collides = collides && (proxy1->m_collisionFilterGroup & proxy0->m_collisionFilterMask);
+	if (gameObj0 && gameObj1)
+	{
+		collides = collides && gameObj0->CheckCollision(gameObj1);
+		collides = collides && gameObj1->CheckCollision(gameObj0);
+	}
 	if (!collides)
 		return false;