Abstracted character controller interface

Renamed old character controller to DynamicCharacterController
First start at KinematicCharacterController. Still has bugs.

Demos/CharacterDemo/CharacterControllerInterface.h

@@ -0,0 +1,32 @@
+#ifndef CHARACTER_CONTROLLER_INTERFACE_H
+#define CHARACTER_CONTROLLER_INTERFACE_H
+
+#include "LinearMath/btVector3.h"
+
+class btCollisionShape;
+class btRigidBody;
+class btDynamicsWorld;
+
+class CharacterControllerInterface
+{
+public:
+	CharacterControllerInterface () {};
+	virtual ~CharacterControllerInterface () {};
+	virtual void setup (btDynamicsWorld* dynamicsWorld, btScalar height = 2.0, btScalar width = 0.25, btScalar stepHeight = 0.25) = 0;
+	virtual void destroy (btDynamicsWorld* dynamicsWorld) = 0;
+
+	virtual btRigidBody* getRigidBody () = 0;
+
+	virtual void preStep (btDynamicsWorld* dynamicsWorld) = 0;
+	virtual void playerStep (btDynamicsWorld* dynamicsWorld, btScalar dt,
+					         int forward,
+							 int backward,
+							 int left,
+							 int right) = 0;
+	virtual bool canJump () const = 0;
+	virtual void jump () = 0;
+
+	virtual bool onGround () const = 0;
+};
+
+#endif