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#include <new>
#include "SnippetVehicleTireFriction.h"
#include "PxPhysicsAPI.h"

namespace snippetvehicle
{

using namespace physx;

//Tire model friction for each combination of drivable surface type and tire type.
static PxF32 gTireFrictionMultipliers[MAX_NUM_SURFACE_TYPES][MAX_NUM_TIRE_TYPES]=
{
	//NORMAL,	WORN
	{1.00f,		0.1f}//TARMAC
};

PxVehicleDrivableSurfaceToTireFrictionPairs* createFrictionPairs(const PxMaterial* defaultMaterial)
{
	PxVehicleDrivableSurfaceType surfaceTypes[1];
	surfaceTypes[0].mType = SURFACE_TYPE_TARMAC;

	const PxMaterial* surfaceMaterials[1];
	surfaceMaterials[0] = defaultMaterial;

	PxVehicleDrivableSurfaceToTireFrictionPairs* surfaceTirePairs =
		PxVehicleDrivableSurfaceToTireFrictionPairs::allocate(MAX_NUM_TIRE_TYPES,MAX_NUM_SURFACE_TYPES);

	surfaceTirePairs->setup(MAX_NUM_TIRE_TYPES, MAX_NUM_SURFACE_TYPES, surfaceMaterials, surfaceTypes);

	for(PxU32 i = 0; i < MAX_NUM_SURFACE_TYPES; i++)
	{
		for(PxU32 j = 0; j < MAX_NUM_TIRE_TYPES; j++)
		{
			surfaceTirePairs->setTypePairFriction(i,j,gTireFrictionMultipliers[i][j]);
		}
	}
	return surfaceTirePairs;
}

} // namespace snippetvehicle