mirror of
https://github.com/OpenMW/openmw.git
synced 2025-11-04 02:26:41 +00:00
51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
#ifndef OPENMW_COMPONENTS_MISC_RNG_H
|
|
#define OPENMW_COMPONENTS_MISC_RNG_H
|
|
|
|
#include <cassert>
|
|
#include <random>
|
|
|
|
namespace Misc
|
|
{
|
|
|
|
/*
|
|
Provides central implementation of the RNG logic
|
|
*/
|
|
class Rng
|
|
{
|
|
public:
|
|
class Seed
|
|
{
|
|
std::mt19937 mGenerator;
|
|
public:
|
|
Seed() = default;
|
|
Seed(const Seed&) = delete;
|
|
Seed(unsigned int seed);
|
|
friend class Rng;
|
|
};
|
|
|
|
static Seed& getSeed();
|
|
|
|
/// seed the RNG
|
|
static void init(unsigned int seed = generateDefaultSeed());
|
|
|
|
/// return value in range [0.0f, 1.0f) <- note open upper range.
|
|
static float rollProbability(Seed& seed = getSeed());
|
|
|
|
/// return value in range [0.0f, 1.0f] <- note closed upper range.
|
|
static float rollClosedProbability(Seed& seed = getSeed());
|
|
|
|
/// return value in range [0, max) <- note open upper range.
|
|
static int rollDice(int max, Seed& seed = getSeed());
|
|
|
|
/// return value in range [0, 99]
|
|
static int roll0to99(Seed& seed = getSeed()) { return rollDice(100, seed); }
|
|
|
|
/// returns default seed for RNG
|
|
static unsigned int generateDefaultSeed();
|
|
|
|
static float deviate(float mean, float deviation, Seed& seed = getSeed());
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|