Random.h File Reference

#include "Define.h"
#include "Duration.h"
#include <limits>

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Classes
class	RandomEngine

Functions
TC_COMMON_API int32	irand (int32 min, int32 max)
TC_COMMON_API uint32	urand (uint32 min, uint32 max)
TC_COMMON_API uint32	urandms (uint32 min, uint32 max)
TC_COMMON_API uint32	rand32 ()
TC_COMMON_API Milliseconds	randtime (Milliseconds min, Milliseconds max)
TC_COMMON_API float	frand (float min, float max)
TC_COMMON_API double	rand_norm ()
TC_COMMON_API double	rand_chance ()
TC_COMMON_API uint32	urandweighted (size_t count, double const *chances)
bool	roll_chance_f (float chance)
bool	roll_chance_i (int chance)

Function Documentation

frand()

TC_COMMON_API float frand	(	float	min,
		float	max
	)

Definition at line 55 of file Random.cpp.

{
 ASSERT(max >= min);
 std::uniform_real_distribution<float> urd(min, max);
 return urd(engine);
}

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irand()

TC_COMMON_API int32 irand	(	int32	min,
		int32	max
	)

Definition at line 35 of file Random.cpp.

{
 ASSERT(max >= min);
 std::uniform_int_distribution<int32> uid(min, max);
 return uid(engine);
}

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rand32()

TC_COMMON_API uint32 rand32

(

)

Definition at line 70 of file Random.cpp.

{
 return GetRng()->RandomUInt32();
}

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rand_chance()

TC_COMMON_API double rand_chance

(

)

Definition at line 81 of file Random.cpp.

{
 std::uniform_real_distribution<double> urd(0.0, 100.0);
 return urd(engine);
}

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rand_norm()

TC_COMMON_API double rand_norm

(

)

Definition at line 75 of file Random.cpp.

{
 std::uniform_real_distribution<double> urd;
 return urd(engine);
}

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randtime()

TC_COMMON_API Milliseconds randtime	(	Milliseconds	min,
		Milliseconds	max
	)

Definition at line 62 of file Random.cpp.

{
 long long diff = max.count() - min.count();
 ASSERT(diff >= 0);
 ASSERT(diff <= 0xFFFFFFFF);
 return min + Milliseconds(urand(0, uint32(diff)));
}

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roll_chance_f()

bool roll_chance_f ( float  chance )

inline

Definition at line 53 of file Random.h.

{
 return chance > rand_chance();
}

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roll_chance_i()

bool roll_chance_i ( int  chance )

inline

Definition at line 59 of file Random.h.

{
 return chance > irand(0, 99);
}

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urand()

TC_COMMON_API uint32 urand	(	uint32	min,
		uint32	max
	)

Definition at line 42 of file Random.cpp.

{
 ASSERT(max >= min);
 std::uniform_int_distribution<uint32> uid(min, max);
 return uid(engine);
}

urandms()

TC_COMMON_API uint32 urandms	(	uint32	min,
		uint32	max
	)

Definition at line 49 of file Random.cpp.

{
 ASSERT(std::numeric_limits<uint32>::max() / Milliseconds::period::den >= max);
 return urand(min * Milliseconds::period::den, max * Milliseconds::period::den);
}

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urandweighted()

TC_COMMON_API uint32 urandweighted	(	size_t	count,
		double const *	chances
	)

Definition at line 87 of file Random.cpp.

{
 std::discrete_distribution<uint32> dd(chances, chances + count);
 return dd(engine);
}

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