#pragma once

#ifndef TRANDOM_INCLUDED

#define TRANDOM_INCLUDED

#include "tcommon.h"

#undef DVAPI

#undef DVVAR

#ifdef TNZCORE_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

/*! Generates a pseudorandom sequence

*/

class DVAPI TRandom {

public:

  TRandom(UINT seed = 0);

  ~TRandom();

  /*! resets the pseudorandom engine to the first number of the sequence */

  void reset();

  /*! set a new seed for the pseudorandom engine and reset the sequence */

  void setSeed(UINT seed);

  /*! returns an unsigned integer number in the range [0, end[ */

  UINT getUInt(UINT end = c_maxuint);  // [0,end[

  /*! returns an integer number in the range [begin, end[ */

  int getInt(int begin, int end);

  /*! returns a float number in the range [0, 1[ */

  float getFloat();

  /*! returns a float number in the range [0, end[ */

  float getFloat(float end);

  /*! returns a float number in the range [begin, end[ */

  float getFloat(float begin, float end);

  /*! returns a random bool value */

  bool getBool();

  /*! returns a double number in the range [0, 1[ */

  double getDouble();

private:

  UINT seed;

  int idx1, idx2;

  UINT ran[56];

  enum RANDOM_FLOAT_TYPE {

    RANDOM_FLOAT_TYPE_NONE,

    RANDOM_FLOAT_TYPE_1,

    RANDOM_FLOAT_TYPE_2,

    RANDOM_FLOAT_TYPE_HOW_MANY

  };

  static RANDOM_FLOAT_TYPE RandomFloatType;

  inline UINT getNextUINT();

  inline void setRandomFloatType();

};

#endif  // TRANDOM_INCLUDED