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#ifndef TERRAIN_RANDOM_SAMPLE_PRECOMPUTED_H
#define TERRAIN_RANDOM_SAMPLE_PRECOMPUTED_H

#include "common/PxPhysXCommonConfig.h"
#include "foundation/PxAssert.h"

using namespace physx;

class SceneVehicle; 

class TerrainRandomSamplePrecompute
{
public:

	TerrainRandomSamplePrecompute(SceneVehicle& app, const char* resourcePath);
	~TerrainRandomSamplePrecompute();

	PxF32 getRandom() const { return mPrecomputedRandomSequence[(mPrecomputedRandomSequenceCount++) % PRECOMPUTED_RANDOM_SEQUENCE_SIZE]; }
	PxF32 getRandomInRange(const PxF32 a, const PxF32 b)
	{
		PX_ASSERT(b>a);
		return a + (b - a)*getRandom();
	}

private:

	enum
	{
		PRECOMPUTED_RANDOM_SEQUENCE_SIZE = 65536
	};
	PxF32* mPrecomputedRandomSequence;
	mutable PxU32 mPrecomputedRandomSequenceCount;
};

#endif //TERRAIN_RANDOM_SAMPLE_PRECOMPUTED_H