70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
#pragma once
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#ifndef TRANDOM_INCLUDED
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#define TRANDOM_INCLUDED
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#include "tcommon.h"
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#undef DVAPI
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#undef DVVAR
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#ifdef TNZCORE_EXPORTS
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#define DVAPI DV_EXPORT_API
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#define DVVAR DV_EXPORT_VAR
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#else
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#define DVAPI DV_IMPORT_API
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#define DVVAR DV_IMPORT_VAR
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#endif
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/*! Generates a pseudorandom sequence
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*/
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class DVAPI TRandom {
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public:
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TRandom(UINT seed = 0);
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~TRandom();
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/*! resets the pseudorandom engine to the first number of the sequence */
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void reset();
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/*! set a new seed for the pseudorandom engine and reset the sequence */
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void setSeed(UINT seed);
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/*! returns an unsigned integer number in the range [0, end[ */
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UINT getUInt(UINT end = c_maxuint); // [0,end[
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/*! returns an integer number in the range [begin, end[ */
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int getInt(int begin, int end);
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/*! returns a float number in the range [0, 1[ */
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float getFloat();
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/*! returns a float number in the range [0, end[ */
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float getFloat(float end);
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/*! returns a float number in the range [begin, end[ */
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float getFloat(float begin, float end);
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/*! returns a random bool value */
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bool getBool();
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/*! returns a double number in the range [0, 1[ */
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double getDouble();
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private:
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UINT seed;
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int idx1, idx2;
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UINT ran[56];
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enum RANDOM_FLOAT_TYPE {
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RANDOM_FLOAT_TYPE_NONE,
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RANDOM_FLOAT_TYPE_1,
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RANDOM_FLOAT_TYPE_2,
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RANDOM_FLOAT_TYPE_HOW_MANY
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};
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static RANDOM_FLOAT_TYPE RandomFloatType;
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inline UINT getNextUINT();
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inline void setRandomFloatType();
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};
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#endif // TRANDOM_INCLUDED
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