random.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 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 COMMON_RANDOM_H
#define COMMON_RANDOM_H

#include "common/scummsys.h"

namespace Common {

class String;

class RandomSource {
private:
    uint32 _randSeed;

public:
    RandomSource(const String &name);

    static uint32 generateNewSeed();

    void setSeed(uint32 seed); 
    uint32 getSeed() const { 
        return _randSeed;
    }

    uint getRandomNumber(uint max);

    uint getRandomBit();

    uint getRandomNumberRng(uint min, uint max);

    int getRandomNumberRngSigned(int min, int max);

private:
    inline void scrambleSeed();
};

} // End of namespace Common

#endif