added more game-engine physics vehicle infrastructure.

source/gameengine/Physics/common/PHY_IVehicle.cpp

@@ -0,0 +1,7 @@
+
+#include "PHY_IVehicle.h"
+
+PHY_IVehicle::~PHY_IVehicle()
+{
+
+}

source/gameengine/Physics/common/PHY_IVehicle.h

@@ -0,0 +1,37 @@
+#ifndef PHY_IVEHICLE_H
+#define PHY_IVEHICLE_H
+
+//PHY_IVehicle provides a generic interface for (raycast based) vehicles. Mostly targetting 4 wheel cars and 2 wheel motorbikes.
+
+class PHY_IMotionState;
+#include "PHY_DynamicTypes.h"
+
+class PHY_IVehicle
+{
+public:
+
+	virtual ~PHY_IVehicle();
+	
+	virtual void	AddWheel(
+			PHY_Vector3	connectionPoint,
+			PHY_Vector3	downDirection,
+			PHY_Vector3	axleDirection,
+			float	suspensionRestLength,
+			float wheelRadius,
+			bool hasSteering
+		) = 0;
+
+
+	virtual	int		GetNumWheels() const = 0;
+	
+	virtual const PHY_IMotionState*		GetWheelMotionState(int wheelIndex) const = 0;
+
+	virtual int	GetUserConstraintId() const =0;
+	virtual int	GetUserConstraintType() const =0;
+
+	//some basic steering/braking/tuning/balancing (bikes)
+
+
+};
+
+#endif //PHY_IVEHICLE_H