HandicapPlayer Class Reference

Player using Handicap to generate moves. More...

#include <HandicapPlayer.hpp>

Inheritance diagram for HandicapPlayer:

Public Member Functions
	HandicapPlayer (ICEngine *ice)
virtual	~HandicapPlayer ()
std::string	Name () const
	returns "handicap".
HexPoint	GenMove (const HexState &state, const Game &game, HexBoard &brd, double maxTime, double &score)
	Generates a move from this board position.
bool	SearchSingleton () const
	Search states with only a single move?
void	SetSearchSingleton (bool flag)
	See SetSearchSingleton().
Protected Member Functions
virtual HexPoint	Search (HexBoard &brd, const Game &game_state, HexColor color, const bitset_t &consider, double max_time, double &score)
	Generates a move in the given gamestate using handicap strategy.
bool	FillinCausedWin () const
virtual HexPoint	Search (const HexState &state, const Game &game, HexBoard &brd, const bitset_t &consider, double maxTime, double &score)=0
	Generates a move in the given gamestate.
Protected Attributes
bool	m_fillinCausedWin
HexColor	m_fillinWinner
Private Member Functions
void	buildResponseMap (const StoneBoard &brd)
	Build the mapping of what the mirror of each HexPoint is.
void	makeMiai (HexPoint p1, HexPoint p2)
	Takes two HexPoints and maps them to each other.
void	threeToOne (const StoneBoard &brd, HexPoint dest, HexPoint p1, HexPoint p2, HexPoint p3)
	Takes four HexPoints and maps p1, p2, and p3 to dest unless p1, p2, and/or p3 are already occupied, in which case there are a number of special cases.
Private Attributes
ICEngine *	m_ice
bool	m_assume_added_stones
PointToPoint	m_responseMap
int	m_width

Detailed Description

Player using Handicap to generate moves.

Note:: This player is not used.

Todo:: CLEANUP!

Definition at line 21 of file HandicapPlayer.hpp.

Constructor & Destructor Documentation

HandicapPlayer::HandicapPlayer ( ICEngine * ice ) [explicit]

Definition at line 14 of file HandicapPlayer.cpp.

References LogFine().

HandicapPlayer::~HandicapPlayer ( ) [virtual]

Definition at line 22 of file HandicapPlayer.cpp.

Member Function Documentation

void HandicapPlayer::buildResponseMap ( const StoneBoard & brd ) [private]

Build the mapping of what the mirror of each HexPoint is.

Definition at line 75 of file HandicapPlayer.cpp.

References StoneBoard::Const(), HexPointUtil::coordsToPoint(), StoneBoard::Height(), ConstBoard::Interior(), INVALID_POINT, StoneBoard::IsPlayed(), m_assume_added_stones, m_responseMap, m_width, makeMiai(), HexPointUtil::pointToCoords(), threeToOne(), and StoneBoard::Width().

Referenced by Search().

bool BenzenePlayer::FillinCausedWin ( ) const [inline, protected, inherited]

Definition at line 86 of file BenzenePlayer.hpp.

References BenzenePlayer::m_fillinCausedWin.

Referenced by PerfectPlayer::Search().

HexPoint BenzenePlayer::GenMove	(	const HexState &	state,
		const Game &	game,
		HexBoard &	brd,
		double	maxTime,
		double &	score
	)			`[virtual, inherited]`

Generates a move from this board position.

If the game is already over (somebody has won), returns RESIGN.

Derived Benzene players that use different search algorithms should not extend this method, but the protected virtual method Search() below.

If state is terminal (game over, vc/fill-in win/loss), returns "appropriate" move. Otherwise, calls Search().

Bug:: Subtract time spent to here from max_time after each step.

Implements HexPlayer.

Definition at line 27 of file BenzenePlayer.cpp.

References BenzenePlayer::CheckEndgame(), BenzenePlayer::InitSearch(), INVALID_POINT, LogInfo(), BenzenePlayer::Search(), and HexState::ToPlay().

Referenced by MoHexEngine::DoSearch(), WolveEngine::GenMove(), PlayAndSolve::PlayerThread::operator()(), and BookBuilder< PLAYER >::Worker::operator()().

void HandicapPlayer::makeMiai	(	HexPoint	p1,
		HexPoint	p2
	)			`[private]`

Takes two HexPoints and maps them to each other.

Definition at line 146 of file HandicapPlayer.cpp.

References m_responseMap.

Referenced by buildResponseMap(), and threeToOne().

std::string HandicapPlayer::Name ( ) const [inline, virtual]

returns "handicap".

Implements HexPlayer.

Definition at line 80 of file HandicapPlayer.hpp.

virtual HexPoint BenzenePlayer::Search	(	const HexState &	state,
		const Game &	game,
		HexBoard &	brd,
		const bitset_t &	consider,
		double	maxTime,
		double &	score
	)			`[protected, pure virtual, inherited]`

Generates a move in the given gamestate.

Derived players must implement this method. Score can be stored in score.

Parameters:

	state	Position and color to play.
	game	Game history up to this point.
	brd	Board to use for work.
	consider	Moves to consider in this state.
	maxTime	Max time available for move.
	score	Score of the move to play.

Returns:: The move to play.

Implemented in MoHexPlayer, PerfectPlayer, and WolvePlayer.

Referenced by BenzenePlayer::GenMove().

HexPoint HandicapPlayer::Search	(	HexBoard &	brd,
		const Game &	game_state,
		HexColor	color,
		const bitset_t &	consider,
		double	max_time,
		double &	score
	)			`[protected, virtual]`

Generates a move in the given gamestate using handicap strategy.

The handicap player must always be WHITE.

Handicap player wins playing second, so in this case any random move will suffice.

For future implementation: discard the naive responseMap and just do it here. Only build the responseMap for the places on the very edge of the board. Possibly edge and second row from edge... Depends on whether the theory player will handle all the edge cases.

Definition at line 28 of file HandicapPlayer.cpp.

References buildResponseMap(), FIRST_TO_PLAY, HexBoard::GetPosition(), HexBoard::Height(), HexAssert, Game::History(), INVALID_POINT, StoneBoard::IsPlayed(), LogInfo(), m_assume_added_stones, m_responseMap, m_width, BoardUtils::RandomEmptyCell(), RESIGN, UNUSED(), VERTICAL_COLOR, and HexBoard::Width().

bool BenzenePlayer::SearchSingleton ( ) const [inline, inherited]

Search states with only a single move?

Definition at line 76 of file BenzenePlayer.hpp.

References BenzenePlayer::m_search_singleton.

Referenced by MoHexEngine::MoHexParam(), and WolveEngine::WolveParam().

void BenzenePlayer::SetSearchSingleton ( bool flag ) [inline, inherited]

See SetSearchSingleton().

Definition at line 81 of file BenzenePlayer.hpp.

References BenzenePlayer::m_search_singleton.

Referenced by MoHexEngine::MoHexParam(), and WolveEngine::WolveParam().

void HandicapPlayer::threeToOne	(	const StoneBoard &	brd,
		HexPoint	dest,
		HexPoint	p1,
		HexPoint	p2,
		HexPoint	p3
	)			`[private]`

Takes four HexPoints and maps p1, p2, and p3 to dest unless p1, p2, and/or p3 are already occupied, in which case there are a number of special cases.

If dest is occupied by black, p2 is viewed as dead and ignored. p1 is mirrored as most other cells are, and p3 is mirrored to the spot above or below it, just outside of the pattern of four.
If dest is occupied by white and any of the two other spaces are occupied, white plays the last spot.
If dest is occupied by white and if two or more of p1, p2, p3 remain unoccupied then p1 and p2 are mirrored and p3 is mapped to the spot above or below it, just outside of the pattern of four.
Finally, if white occupies any of p1, p2, or p3, then p1 and dest are mirrored as most of the other cells are, p2 is ignored (as it is either dead for black or occupied by white) and p3 is mapped to the spot above or below it, just outside of the pattern of four.

Definition at line 152 of file HandicapPlayer.cpp.

References StoneBoard::IsBlack(), StoneBoard::IsPlayed(), StoneBoard::IsWhite(), m_responseMap, makeMiai(), and MAX_WIDTH.

Referenced by buildResponseMap().