'During his long sea voyages, Captain Cook was apparently often absent in the evenings and eventually
'the crew began to joke that he must have a mistress in his cabin. When they discovered that the Captain
'had simply been playing this game with the ship's scientists, the game was christened "The Captain's Mistress"
'Uses bitmaps for the board, iterative search deepening, alpha-beta pruning, and principal variation search.
'No positional evaluation is made at the leaves, it simply relies on search depth to find winning combinations.
'Search depth is about 10 to 12 with a 0.1 seconds time check (beginners level).
'The board looks like this using two orthogonal and two diagonal bitmaps for each color, and a bit is set for each
'piece at that location. This arrangement limits the number of (non-loop!)-tests for a connected quad to 13 or less.
' 1 2 4 8 16 32 64
' +---+---+---+---+---+---+---+
' | | | | o | | | | 32
' +---+---+---+---+---+---+---+
' | | | | o | | | | 16
' +---+---+---+---+---+---+---+
' | | | | o | | | | 8
' west-east --> +---+---+---+---+---+---+---+
' | | | | o | | | | 4
' +---+---+---+---+---+---+---+
' | | | | | | | | 2
' +---+---+---+---+---+---+---+
' | | | | | | | | 1
' +---+---+---+---+---+---+---+
' / ^ ^ ^ ^ ^ ^ ^ \
' / south-north \
' southwest-northeast southeast-northwest
'for example:
'The white quad shown above will show up in byte SNW(3) as b00111100 (d60) and can be tested with an appropriate AND-mask.
'Only those bitmaps are tested which were affected by the last move; this makes the search pretty fast.
'The Hint option shows the move which the computer has worked out for you during HER search, no search is made for YOU.
'+++++++++++++++++++++
' Development History
'+++++++++++++++++++++
'14Mar2009 - some speed improvements by eliminating duplicate calculations and using API functions for moving data
' and by arranging that moved data start at dword boundaries (7% improvement)
' the search has also been improved by altering the move ordering (16% improvement)
' eliminated a few dead variables
' taken care of different CPU clock frequencies and of running in IDE
'26Mar2009 - using GetTickCount instead of Timer
' some pimping up of the UI
' added balloon tooltips
' remove chip on click so you can't click twice
' changed timing control
' fixed bug with prediction and Draw detection
' changed chip dropping routine
' added flashing
' added quad marker
' added keyboard operation
' added TakeBack
' added Replay
' eliminated deadwood
Private Declare Function Beeper Lib "kernel32" Alias "Beep" (ByVal dwFreq As Long, ByVal dwDuration As Long) As Long
Private Declare Sub CopyBoard Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, Optional ByVal Length As Long = 84)
Private Declare Sub CopyMoves Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, Optional ByVal Length As Long = 28)
Private Declare Function GetClassLong Lib "user32" Alias "GetClassLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long
Private Declare Function GetCursorPos Lib "user32" (lpPoint As tPoint) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpBuffer As String, nSize As Long) As Long
Private Declare Function GetTickCount Lib "kernel32" () As Long
Private Declare Function InflateRect Lib "user32" (lpRect As tRECT, ByVal X As Long, ByVal Y As Long) As Long
Private Declare Sub InitCommonControls Lib "comctl32" () 'a manifest file, if present, may influence the popup balloons
Private Declare Function MessageBeep Lib "user32" (ByVal wType As VbMsgBoxStyle) As Long
Private Declare Function QueryPerformanceCounter Lib "kernel32" (lpPerformanceCount As Currency) As Long
Private Declare Function QueryPerformanceFrequency Lib "kernel32" (lpFrequency As Currency) As Long
Private Declare Function Rectangle Lib "gdi32" (ByVal hDC As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function SetClassLong Lib "user32" Alias "SetClassLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SetCursorPos Lib "user32" (ByVal X As Long, ByVal Y As Long) As Long
Private Declare Function SetRect Lib "user32" (lpRect As tRECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Type tPoint
X As Long
Y As Long
End Type
Private CP As tPoint 'cursor position
Private Type tRECT
LT As tPoint 'top left
RB As tPoint 'bot rite
End Type
Private WindowRect As tRECT 'for drawing the frame
'+++++++++++++++++
'The Board
'+++++++++++++++++
Private Type tBoard 'is moved rather frequently - so it is kept as short as possible (84 bytes)
Filled(0 To 6) As Byte 'column fill
SNW(0 To 6) As Byte 'south -> north white
SNB(0 To 6) As Byte 'south -> north black
WEW(0 To 5) As Byte 'east -> west white
WEB(0 To 5) As Byte 'east -> west black
SwNeW(-3 To 8) As Byte 'south-west -> north-east white
SwNeB(-3 To 8) As Byte 'south-west -> north-east black
SeNwW(-3 To 8) As Byte 'south-east -> north-west white
SeNwB(-3 To 8) As Byte 'south-east -> north-west black
SideToMove As Byte
Extra1 As Byte 'bring it up to 84 bytes so it will hopefully use dword moves only
Extra2 As Byte
End Type
Private Board As tBoard 'the board bitmaps
Private OrdMovs(0 To 6) As Long
Private Enum eConsts
Infinity = 99999 'value outside normal range
DepthLimit = 30 'max ply searchable
HTCAPTION = 2 'API
WM_NCLBUTTONDOWN = 161 'API
CS_DROPSHADOW = &H20000 'API
GCL_STYLE = -26 'API
OneStep = 795 'displayed board raster pitch in twips
TwoSteps = OneStep * 2
ThreeSteps = TwoSteps + OneStep
FourSteps = TwoSteps * 2
FiveSteps = FourSteps + OneStep
End Enum
#If False Then ':) Line inserted by Formatter
Private Infinity, DepthLimit, HTCAPTION, WM_NCLBUTTONDOWN, CS_DROPSHADOW, GCL_STYLE, OneStep, TwoSteps, ThreeSteps, FourSteps, FiveSteps ':) Line inserted by Formatter
#End If ':) Line inserted by Formatter
Private PV(0 To DepthLimit, _
0 To DepthLimit) As Long 'Principal Variation
Private TimeElapsed As Single 'during CPU speed assessment
Private HSCFreq As Currency
Private TenMicrosecs As Currency 'HscCount for 10 ╡secs
Private Result As Long 'The Search Result
Private Posns As Long '# of nodes in search tree visited
Private Cutoffs As Long '# of cutoffs
Private TimeStart As Long
Private TimeUp As Long 'in millisecs
Private IterDepth As Long 'controls iterative deepening
Private IndexW As Long 'controls the white drop-chips
Private IndexB As Long 'same for black
Private Origin As tPoint 'top left corner of matrix
Private Half As Long 'half width of chip image
Private CurrColumn As Long 'the current position of the mouse cursor
Private Tooltip As cTooltip
Private LastCtl As Control
Private InPV As Boolean 'true if search is in PV
Private SearchInProgress As Boolean 'what it says
Private Replay As Boolean 'true when replaying
Private Const White As Byte = 1 'black is 0
Private Const Signature As String = "TCM"
Private Sub btExit_Click()
Unload Me
End Sub
Private Sub btExit_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
CreateTooltip btExit
End Sub
Private Sub btReset_Click()
Dim i As Long
Dim j As Long
With Board
For i = 0 To 5 'reset the board
.SNW(i) = 0
.SNB(i) = 0
.WEW(i) = 0
.WEB(i) = 0
.SwNeB(i) = 0
.SwNeW(i) = 0
.SeNwB(i) = 0
.SeNwW(i) = 0
.Filled(i) = 0
imgWhite(i).Visible = True
imgBlack(i).Visible = False
Next i
.SNW(i) = 0 'one more for horizontal
.SNB(i) = 0
.Filled(i) = 0
lnQuad.Visible = False
imgWhite(i).Visible = True
imgBlack(i).Visible = False
lbHint.Enabled = True
lbTakeBack.Enabled = True
For i = 1 To 21
imgDropW(i).Visible = False
imgDropB(i).Visible = False
Next i
.SideToMove = White
End With 'BOARD
For i = 0 To DepthLimit
For j = 0 To DepthLimit
PV(i, j) = -1
Next j, i
lbWins.ForeColor = vbBlack
IndexW = 0
IndexB = 0
lbWins = vbNullString
imgSmile.Visible = False
lbWinIn = vbNullString
CurrColumn = 2
Form_KeyDown vbKeyRight, 0
pic.SetFocus
End Sub
Private Sub btReset_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
CreateTooltip btReset
End Sub
Private Function CheckForQuad(ByVal Bits As Long) As Boolean
CheckForQuad = ((Bits And 15) = 15) Or ((Bits And 30) = 30) Or ((Bits And 60) = 60)
If CheckForQuad Then
RemoveButtons
End If
End Function
Private Function CheckSeNwB(Board As tBoard, ByVal Which As Long) As Boolean
CheckSeNwB = CheckForQuad(Board.SeNwB(Which))
End Function
Private Function CheckSeNwW(Board As tBoard, ByVal Which As Long) As Boolean
CheckSeNwW = CheckForQuad(Board.SeNwW(Which))
End Function
Private Function CheckSNB(Board As tBoard, ByVal Which As Long) As Boolean
CheckSNB = CheckForQuad(Board.SNB(Which))
End Function
Private Function CheckSNW(Board As tBoard, ByVal Which As Long) As Boolean
CheckSNW = CheckForQuad(Board.SNW(Which))
End Function
Private Function CheckSwNeB(Board As tBoard, ByVal Which As Long) As Boolean
CheckSwNeB = CheckForQuad(Board.SwNeB(Which))
End Function
Private Function CheckSwNeW(Board As tBoard, ByVal Which As Long) As Boolean
CheckSwNeW = CheckForQuad(Board.SwNeW(Which))
End Function
Private Function CheckWEB(Board As tBoard, ByVal Which As Long) As Boolean
Dim Bits As Long
Bits = Board.WEB(Which)
CheckWEB = CheckForQuad(Bits) Or (Bits And 120) = 120 'one extra check because WE has 7 bits
If CheckWEB Then
RemoveButtons
End If
End Function
Private Function CheckWEW(Board As tBoard, ByVal Which As Long) As Boolean
Dim Bits As Long
Bits = Board.WEW(Which)
CheckWEW = CheckForQuad(Bits) Or (Bits And 120) = 120 'one extra check because WE has 7 bits
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