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//-----------------------------------------------------------------------------
/** @file libpentobi_base/Move.h
@author Markus Enzenberger
@copyright GNU General Public License version 3 or later */
//-----------------------------------------------------------------------------
#ifndef LIBPENTOBI_BASE_MOVE_H
#define LIBPENTOBI_BASE_MOVE_H
#include <cstdint>
#include "libboardgame_base/Assert.h"
namespace libpentobi_base {
//-----------------------------------------------------------------------------
class Move
{
public:
/** Integer type used internally in this class to store a move.
This class is optimized for size not for speed because there are
large precomputed data structures that store moves and move lists.
Therefore it uses uint_least16_t, not uint_fast16_t. */
using IntType = std::uint_least16_t;
static constexpr IntType onboard_moves_classic = 30433;
static constexpr IntType onboard_moves_trigon = 32131;
static constexpr IntType onboard_moves_trigon_3 = 24859;
static constexpr IntType onboard_moves_duo = 13729;
static constexpr IntType onboard_moves_junior = 7217;
static constexpr IntType onboard_moves_nexos = 15157;
static constexpr IntType onboard_moves_callisto = 9433;
static constexpr IntType onboard_moves_callisto_2 = 4265;
static constexpr IntType onboard_moves_callisto_3 = 6885;
static constexpr IntType onboard_moves_gembloq = 31254;
static constexpr IntType onboard_moves_gembloq_2 = 15018;
static constexpr IntType onboard_moves_gembloq_3 = 23518;
/** Integer range of moves.
The maximum is given by the number of on-board moves in any game
variant, plus a null move. */
static constexpr IntType range = onboard_moves_trigon + 1;
static Move null() { return Move(0); }
Move();
explicit Move(IntType i);
bool operator==(Move mv) const;
bool operator!=(Move mv) const { return ! operator==(mv); }
bool operator<(Move mv) const;
bool is_null() const;
/** Return move as an integer between 0 and Move::range */
IntType to_int() const;
private:
static constexpr IntType value_uninitialized = range;
IntType m_i;
#ifdef LIBBOARDGAME_DEBUG
bool is_initialized() const { return m_i < value_uninitialized; }
#endif
};
inline Move::Move()
{
#ifdef LIBBOARDGAME_DEBUG
m_i = value_uninitialized;
#endif
}
inline Move::Move(IntType i)
{
LIBBOARDGAME_ASSERT(i < range);
m_i = i;
}
inline bool Move::operator==(Move mv) const
{
LIBBOARDGAME_ASSERT(is_initialized());
LIBBOARDGAME_ASSERT(mv.is_initialized());
return m_i == mv.m_i;
}
inline bool Move::operator<(Move mv) const
{
LIBBOARDGAME_ASSERT(is_initialized());
LIBBOARDGAME_ASSERT(mv.is_initialized());
return m_i < mv.m_i;
}
inline bool Move::is_null() const
{
LIBBOARDGAME_ASSERT(is_initialized());
return m_i == 0;
}
inline Move::IntType Move::to_int() const
{
LIBBOARDGAME_ASSERT(is_initialized());
return m_i;
}
//-----------------------------------------------------------------------------
} // namespace libpentobi_base
//-----------------------------------------------------------------------------
#endif // LIBPENTOBI_BASE_MOVE_H
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