cleanup memory in CcdPhysicsDemo, RagdollDemo, ConcaveDemo, BspDemo (work in progress)

Demos/ConcaveDemo/ConcaveDemo.h

@@ -16,12 +16,35 @@ subject to the following restrictions:
 #define CONCAVE_DEMO_H
 
 #include "DemoApplication.h"
+#include "LinearMath/btAlignedObjectArray.h"
+
+class btBroadphaseInterface;
+class btCollisionShape;
+class btOverlappingPairCache;
+class btCollisionDispatcher;
+class btConstraintSolver;
+struct btCollisionAlgorithmCreateFunc;
+class btDefaultCollisionConfiguration;
+class btTriangleIndexVertexArray;
 
 ///ConcaveDemo shows usage of static concave triangle meshes
 ///It also shows per-triangle material (friction/restitution) through CustomMaterialCombinerCallback
 class ConcaveDemo : public DemoApplication
 {
 
+	//keep the collision shapes, for deletion/cleanup
+	btAlignedObjectArray<btCollisionShape*>	m_collisionShapes;
+
+	btTriangleIndexVertexArray* m_indexVertexArrays;
+
+	btBroadphaseInterface*	m_broadphase;
+
+	btCollisionDispatcher*	m_dispatcher;
+
+	btConstraintSolver*	m_solver;
+
+	btDefaultCollisionConfiguration* m_collisionConfiguration;
+
 	bool	m_animatedMesh;
 
 	public:
@@ -32,6 +55,13 @@ class ConcaveDemo : public DemoApplication
 	}
 	void	initPhysics();
 
+	void	exitPhysics();
+
+	virtual ~ConcaveDemo()
+	{
+		exitPhysics();
+	}
+
 	virtual void clientMoveAndDisplay();
 
 	virtual void displayCallback();