RandomSequence.h

// RandomSequence.h -- The interface to a random number sequence.

/*
 * Copyright (C) 2005 Tudor Hulubei <tudor@hulubei.net>.
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2, or (at
 * your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA,
 * 02111-1307, USA.
 */

/*
 * NOTE: This is an interal header file.
 * You should not attempt to use it directly.
 */

// $Id: RandomSequence_8h-source.html,v 1.1 2005/05/25 12:37:18 tudor Exp $

#ifndef _CSP_KERNEL_RandomSequence_H
#define _CSP_KERNEL_RandomSequence_H


CSP_NAMESPACE_BEGIN(csp);


class CSP_API RandomSequence
{
  public:
    RandomSequence(Randomizer& randomizer);

    void setMode(bool predefined = false);

    unsigned int seed() const { return m_seed; }

    void setSeed(unsigned int seed) { m_seed = seed; }

    int next(int limit);

  private:
    RandomSequence(const RandomSequence&);

    RandomSequence& operator=(const RandomSequence&);

    Randomizer& m_randomizer;

    unsigned int m_seed;

    bool m_predefined;

    vector<pair<int, int> > m_sequence;

    size_t m_index;
};


CSP_NAMESPACE_END(csp);


#endif // _CSP_KERNEL_RandomSequence_H

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