13f71c9c4d
* feat(Core/Random): port random system from TrinityCore * lic * logic correct * MultimapErasePair move * whitespace 17:13:34 1. 'Containers.h'. Replace (1) 17:13:40 2. 'LootMgr.h'. Replace (1) 17:13:44 3. 'World.cpp'. Replace (1) 17:13:47 4. 'instance_scholomance.cpp'. Replace (1) * correct debug build
67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
|
|
* Copyright (C) 2008-2021 TrinityCore <http://www.trinitycore.org/>
|
|
*/
|
|
|
|
#ifndef Random_h__
|
|
#define Random_h__
|
|
|
|
#include "Define.h"
|
|
#include "Duration.h"
|
|
#include <limits>
|
|
|
|
/* Return a random number in the range min..max. */
|
|
AC_COMMON_API int32 irand(int32 min, int32 max);
|
|
|
|
/* Return a random number in the range min..max (inclusive). */
|
|
AC_COMMON_API uint32 urand(uint32 min, uint32 max);
|
|
|
|
/* Return a random millisecond value between min and max seconds. Functionally equivalent to urand(min*IN_MILLISECONDS, max*IN_MILLISECONDS). */
|
|
AC_COMMON_API uint32 urandms(uint32 min, uint32 max);
|
|
|
|
/* Return a random number in the range 0 .. UINT32_MAX. */
|
|
AC_COMMON_API uint32 rand32();
|
|
|
|
/* Return a random time in the range min..max (up to millisecond precision). Only works for values where millisecond difference is a valid uint32. */
|
|
AC_COMMON_API Milliseconds randtime(Milliseconds min, Milliseconds max);
|
|
|
|
/* Return a random number in the range min..max */
|
|
AC_COMMON_API float frand(float min, float max);
|
|
|
|
/* Return a random double from 0.0 to 1.0 (exclusive). */
|
|
AC_COMMON_API double rand_norm();
|
|
|
|
/* Return a random double from 0.0 to 100.0 (exclusive). */
|
|
AC_COMMON_API double rand_chance();
|
|
|
|
/* Return a random number in the range 0..count (exclusive) with each value having a different chance of happening */
|
|
AC_COMMON_API uint32 urandweighted(size_t count, double const* chances);
|
|
|
|
/* Return true if a random roll fits in the specified chance (range 0-100). */
|
|
inline bool roll_chance_f(float chance)
|
|
{
|
|
return chance > rand_chance();
|
|
}
|
|
|
|
/* Return true if a random roll fits in the specified chance (range 0-100). */
|
|
inline bool roll_chance_i(int chance)
|
|
{
|
|
return chance > irand(0, 99);
|
|
}
|
|
|
|
/*
|
|
* Wrapper satisfying UniformRandomNumberGenerator concept for use in <random> algorithms
|
|
*/
|
|
class AC_COMMON_API RandomEngine
|
|
{
|
|
public:
|
|
typedef uint32 result_type;
|
|
|
|
static constexpr result_type min() { return std::numeric_limits<result_type>::min(); }
|
|
static constexpr result_type max() { return std::numeric_limits<result_type>::max(); }
|
|
result_type operator()() const { return rand32(); }
|
|
|
|
static RandomEngine& Instance();
|
|
};
|
|
|
|
#endif // Random_h__
|