added basic RaycastVehicle support, and CcdPhysicsEnvironment::getAppliedImpulse(int constraintId), this value is useful as treshold to break constraints.

BulletDynamics/Vehicle/VehicleRaycaster.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2005 Erwin Coumans http://continuousphysics.com/Bullet/
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies.
+ * Erwin Coumans makes no representations about the suitability 
+ * of this software for any purpose.  
+ * It is provided "as is" without express or implied warranty.
+*/
+#ifndef VEHICLE_RAYCASTER_H
+#define VEHICLE_RAYCASTER_H
+
+#include "SimdVector3.h"
+
+/// VehicleRaycaster is provides interface for between vehicle simulation and raycasting
+struct VehicleRaycaster
+{
+	struct VehicleRaycasterResult
+	{
+		VehicleRaycasterResult() :m_distFraction(-1.f){};
+		SimdVector3	m_hitPointInWorld;
+		SimdVector3	m_hitNormalInWorld;
+		SimdScalar	m_distFraction;
+	};
+
+	virtual void* CastRay(const SimdVector3& from,const SimdVector3& to, VehicleRaycasterResult& result) = 0;
+
+};
+
+#endif //VEHICLE_RAYCASTER_H
+