Fast ladder algorithm, computes ladders and snapbacks. More...

#include "GoBoard.h"
#include "SgBoardColor.h"
#include "GoModBoard.h"
#include "SgPoint.h"
#include "SgPointSet.h"
#include "SgVector.h"

Classes
class	GoLadder
	This class contains all the ladder-specific stuff. More...
Namespaces
namespace	GoLadderUtil
Enumerations
enum	GoLadderStatus { GO_LADDER_UNKNOWN, GO_LADDER_CAPTURED, GO_LADDER_UNSETTLED, GO_LADDER_ESCAPED }
Functions
bool	GoLadderUtil::Ladder (const GoBoard &board, SgPoint prey, SgBlackWhite toPlay, bool fTwoLibIsEscape=false, SgVector< SgPoint > *sequence=0)
	Return whether or not the block at 'prey' can be captured in a ladder when 'toPlay' plays first.
GoLadderStatus	GoLadderUtil::LadderStatus (const GoBoard &bd, SgPoint prey, bool fTwoLibIsEscape=false, SgPoint toCapture=0, SgPoint toEscape=0)
	Return whether the block at 'prey' is captured, escaped, or unsettled with regards to capture in a ladder.
bool	GoLadderUtil::IsProtectedLiberty (const GoBoard &bd, SgPoint liberty, SgBlackWhite col, bool &byLadder, bool &isKoCut, bool tryLadder=true)
	Check if this is a chain connection point, or a ko cut point.
bool	GoLadderUtil::IsProtectedLiberty (const GoBoard &bd, SgPoint liberty, SgBlackWhite col)
	Simple form, calls the complex form and ignores bool results.
SgPoint	GoLadderUtil::TryLadder (const GoBoard &bd, SgPoint prey, SgBlackWhite firstPlayer)
	try to escape/capture prey block Possible return values: SG_PASS if already escaped/captured the point to play SG_NULLMOVE in case of failure

Detailed Description

Fast ladder algorithm, computes ladders and snapbacks.

Note:: Will become obsolete when class GoBoard is fast enough for computing ladders.

Definition in file GoLadder.h.

Enumeration Type Documentation

Enumerator:

GO_LADDER_UNKNOWN	Don't know anything about the status of this block.
GO_LADDER_CAPTURED	Definitely captured, regardless of who plays first.
GO_LADDER_UNSETTLED	Capture or escape depends on who plays first.
GO_LADDER_ESCAPED	Definitely escaped, regardless of who plays first.

Definition at line 22 of file GoLadder.h.