BGE patch: logic optimization part 2: remove inactive sensors from logic manager.

With this patch, only sensors that are connected to 
active states are actually registered in the logic
manager. Inactive sensors won't take any CPU,
especially the Radar and Near sensors that use a
physical object for the detection: these objects
are removed from the physics engine.

To take advantage of this optimization patch, you
need to define very light idle state when the 
objects are inactive: make them transparent, suspend
the physics, keep few sensors active (e,g a message
sensor to wake up), etc.

1 files changed, 4 insertions, 2 deletions

diff --git a/source/gameengine/GameLogic/SCA_EventManager.h b/source/gameengine/GameLogic/SCA_EventManager.h
index 9cc1718cd1e..9dbb5a6d24f 100644
--- a/source/gameengine/GameLogic/SCA_EventManager.h
+++ b/source/gameengine/GameLogic/SCA_EventManager.h
@@ -30,12 +30,14 @@
 #define __KX_EVENTMANAGER
 
 #include <vector>
+#include <set>
 #include <algorithm>
 
 class SCA_EventManager
 {
 protected:
-	std::vector <class SCA_ISensor*>				m_sensors;
+	// use a set to speed-up insertion/removal
+	std::set <class SCA_ISensor*>				m_sensors;
 
 public:
 	enum EVENT_MANAGER_TYPE {
@@ -61,7 +63,7 @@ public:
 	virtual void	NextFrame();
 	virtual void    UpdateFrame();
 	virtual void	EndFrame();
-	virtual void	RegisterSensor(class SCA_ISensor* sensor)=0;
+	virtual void	RegisterSensor(class SCA_ISensor* sensor);
 	int		GetType();
 
 protected: