mirror of
https://github.com/mod-playerbots/azerothcore-wotlk.git
synced 2026-01-16 10:30:27 +00:00
84 lines
3.0 KiB
C++
84 lines
3.0 KiB
C++
/*
|
|
* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Affero General Public License as published by the
|
|
* Free Software Foundation; either version 3 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef Random_h__
|
|
#define Random_h__
|
|
#undef max
|
|
#undef min
|
|
#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 time in the range min..max (up to second precision). */
|
|
AC_COMMON_API Seconds randtime(Seconds min, Seconds 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(std::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__
|