PxVehicleTireFriction.h

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/*
 * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
 *
 * NVIDIA CORPORATION and its licensors retain all intellectual property
 * and proprietary rights in and to this software, related documentation
 * and any modifications thereto.  Any use, reproduction, disclosure or
 * distribution of this software and related documentation without an express
 * license agreement from NVIDIA CORPORATION is strictly prohibited.
 */
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  

#ifndef PX_VEHICLE_TIREFRICTION_H
#define PX_VEHICLE_TIREFRICTION_H

#include "foundation/PxSimpleTypes.h"

#ifndef PX_DOXYGEN
namespace physx
{
#endif

class PxMaterial;

struct PxVehicleDrivableSurfaceType
{
    enum
    {
        eSURFACE_TYPE_UNKNOWN=0xffffffff
    };
    PxU32 mType;
};

class PxVehicleDrivableSurfaceToTireFrictionPairs
{
public:

    friend class VehicleSurfaceTypeHashTable;

    enum
    {
        eMAX_NB_SURFACE_TYPES=256
    };

    static PxVehicleDrivableSurfaceToTireFrictionPairs* allocate
        (const PxU32 maxNbTireTypes, const PxU32 maxNbSurfaceTypes);

    void setup
        (const PxU32 nbTireTypes, const PxU32 nbSurfaceTypes, 
         const PxMaterial** drivableSurfaceMaterials, const PxVehicleDrivableSurfaceType* drivableSurfaceTypes);

    void release();

    void setTypePairFriction(const PxU32 surfaceType, const PxU32 tireType, const PxReal value);

    PxReal getTypePairFriction(const PxU32 surfaceType, const PxU32 tireType) const;

    PxU32 getMaxNbSurfaceTypes() const {return mMaxNbSurfaceTypes;}

    PxU32 getMaxNbTireTypes() const {return mMaxNbTireTypes;}

private:

    PxReal* mPairs;                 

    const PxMaterial** mDrivableSurfaceMaterials;

    PxVehicleDrivableSurfaceType* mDrivableSurfaceTypes;

    PxU32 mNbSurfaceTypes;          

    PxU32 mMaxNbSurfaceTypes;           

    PxU32 mNbTireTypes;         

    PxU32 mMaxNbTireTypes;          


#if !defined(PX_P64)
    PxU32 mPad[1];
#else
    PxU32 mPad[2];
#endif

    PxVehicleDrivableSurfaceToTireFrictionPairs(){}
    ~PxVehicleDrivableSurfaceToTireFrictionPairs(){}
};
PX_COMPILE_TIME_ASSERT(0==(sizeof(PxVehicleDrivableSurfaceToTireFrictionPairs) & 15));

#ifndef PX_DOXYGEN
} // namespace physx
#endif

#endif //PX_VEHICLE_TIREFRICTION_H