Notify plugins on certain events (e.g. body added).

This also adds a periodic tick function to plugins, giving them periodically control over the simulation thread, even when the simulation is paused.

examples/SharedMemory/PhysicsServerCommandProcessor.h

@@ -155,6 +155,7 @@ public:
 	virtual void replayLogCommand(char* bufferServerToClient, int bufferSizeInBytes );
 
 	//logging of object states (position etc)
+	virtual void tickPlugins();
 	void tickPlugins(btScalar timeStep, bool isPreTick);
 	void logObjectStates(btScalar timeStep);
 	void processCollisionForces(btScalar timeStep);
@@ -173,6 +174,9 @@ public:
 
 	virtual const btQuaternion& getVRTeleportOrientation() const;
 	virtual void setVRTeleportOrientation(const btQuaternion& vrTeleportOrn);
+
+private:
+	void addTransformChangedNotifications();
 };
 
 #endif //PHYSICS_SERVER_COMMAND_PROCESSOR_H