b5107715f1
- added `state` as a property to restore internal state of RNG; - `get_seed()` returns last seed used to initialize the state rather than the current state. Co-authored-by: MidZik <matt.idzik1@gmail.com>
63 lines
3.3 KiB
C++
63 lines
3.3 KiB
C++
/*************************************************************************/
|
|
/* random_number_generator.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef RANDOM_NUMBER_GENERATOR_H
|
|
#define RANDOM_NUMBER_GENERATOR_H
|
|
|
|
#include "core/math/random_pcg.h"
|
|
#include "core/object/reference.h"
|
|
|
|
class RandomNumberGenerator : public Reference {
|
|
GDCLASS(RandomNumberGenerator, Reference);
|
|
|
|
protected:
|
|
RandomPCG randbase;
|
|
|
|
static void _bind_methods();
|
|
|
|
public:
|
|
_FORCE_INLINE_ void set_seed(uint64_t p_seed) { randbase.seed(p_seed); }
|
|
_FORCE_INLINE_ uint64_t get_seed() { return randbase.get_seed(); }
|
|
|
|
_FORCE_INLINE_ void set_state(uint64_t p_state) { randbase.set_state(p_state); }
|
|
_FORCE_INLINE_ uint64_t get_state() const { return randbase.get_state(); }
|
|
|
|
_FORCE_INLINE_ void randomize() { randbase.randomize(); }
|
|
|
|
_FORCE_INLINE_ uint32_t randi() { return randbase.rand(); }
|
|
_FORCE_INLINE_ real_t randf() { return randbase.randf(); }
|
|
_FORCE_INLINE_ real_t randf_range(real_t p_from, real_t p_to) { return randbase.random(p_from, p_to); }
|
|
_FORCE_INLINE_ real_t randfn(real_t p_mean = 0.0, real_t p_deviation = 1.0) { return randbase.randfn(p_mean, p_deviation); }
|
|
_FORCE_INLINE_ int randi_range(int p_from, int p_to) { return randbase.random(p_from, p_to); }
|
|
|
|
RandomNumberGenerator() {}
|
|
};
|
|
|
|
#endif // RANDOM_NUMBER_GENERATOR_H
|