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MegaChess.bas
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MegaChess.bas
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$VIRTUALKEYBOARD:OFF
$INSTALLFOLDER "MegaChess" IN "MegaChess"
'$DYNAMIC
CONST P0 = 1, PN = 2, PB = 3, PR = 4, R0 = 5, NR = 6, N0 = 7, BN = 8, B0 = 9, QN = 10, Q0 = 11, K0 = 12
CONST LL = 15, DD = 2
DIM SHARED Board(1 TO 14, 1 TO 14) AS _BYTE
DIM SHARED Mx, My, Mb1, Mb2
DIM SHARED Img&(0 TO 24)
DIM SHARED WCS, WCL, BCS, BCL
DIM SHARED MainMove
DIM X(-1), Y(-1)
RESTORE BoardData
FOR i = 1 TO 14
FOR j = 1 TO 14
READ Board(j, i)
NEXT j, i
WCS = -1
WCL = -1
BCS = -1
BCL = -1
SCREEN _NEWIMAGE(631, 631, 32)
_FULLSCREEN _SQUAREPIXELS , _SMOOTH
CLS , _RGB32(230, 230, 230)
LINE (150, 100)-STEP(330, 100), _RGB32(30, 120, 250), BF
LINE (150, 300)-STEP(330, 100), _RGB32(30, 120, 250), BF
LINE (150, 500)-STEP(330, 100), _RGB32(30, 120, 250), BF
COLOR _RGB32(80, 180, 80), _RGBA32(190, 190, 190, 10)
_PRINTSTRING (240, 140), "Human vs Human"
_PRINTSTRING (240, 340), "Human vs Computer"
_PRINTSTRING (240, 540), "Computer vs Human"
CHDIR "MegaChess"
FOR i = -12 TO -1
Img&(i + 12) = _LOADIMAGE("B" + Convert(i) + ".png")
NEXT i
Img&(12) = _NEWIMAGE(35, 35, 32)
FOR i = 1 TO 12
Img&(i + 12) = _LOADIMAGE("W" + Convert(i) + ".png")
NEXT i
_ICON Img&(24)
_TITLE "MegaChess"
DO: _LIMIT 30
Mouse
IF Mb1 THEN
IF Mx > 150 THEN
IF Mx < 480 THEN
IF My > 100 AND My < 200 THEN MMMM = 0: EXIT DO
IF My > 300 AND My < 400 THEN MMMM = -1: EXIT DO
IF My > 500 AND My < 600 THEN MMMM = 1: EXIT DO
END IF
END IF
END IF
LOOP
DrawBoard
Move = 1
DO
IF Move = MMMM THEN
MainMove = 0
GetMove LL, DD, Move, A, B, X, Y, P
MainMove = -1
MakeMove Move, A, B, X, Y, P
DrawBoard
Move = -Move
GOTO NextLoop
END IF
Mouse
IF Mb1 THEN
Px = (Mx + 45) \ 45
Py = (My + 45) \ 45
IF Px < 1 GOTO NextLoop
IF Py < 1 GOTO NextLoop
IF Px > 14 GOTO NextLoop
IF Py > 14 GOTO NextLoop
IF Ox THEN
IF SGN(Board(Ox, Oy)) = SGN(Board(Px, Py)) GOTO NextLoop
FOR z = 0 TO UBOUND(X)
IF X(z) = Px THEN IF Y(z) = Py THEN GOTO LegalMove
NEXT z
Ox = 0
Oy = 0
DrawBoard
GOTO NextLoop
LegalMove:
IF Board(Px, Py) * -Move = K0 THEN
CLS
IF Move = 1 THEN C$ = "White" ELSE C$ = "Black"
FOR i = 1 TO 300
RANDOMIZE TIMER
COLOR _RGB32(RND * 255, 255 - (RND * 255), RND ^ 2 * 255), _RGBA32(RND ^ 2 * 255, RND * 255, 255 - (RND * 255), RND ^ RND * 255)
PRINT C$; " wins! ";
NEXT i
SLEEP
SYSTEM
END IF
Board(Px, Py) = Board(Ox, Oy)
Board(Ox, Oy) = 0
SELECT CASE ABS(Board(Px, Py))
CASE P0
IF Move = 1 THEN
IF Py = 1 THEN
LINE (0, 0)-(140, 45), _RGB32(240, 240, 240), BF
_PUTIMAGE (5, 5), Img&(17)
_PUTIMAGE (50, 5), Img&(19)
_PUTIMAGE (95, 5), Img&(21)
_PUTIMAGE (140, 5), Img&(23)
DO
Mouse
IF Mb1 THEN
Px2 = (Mx + 45) \ 45
Py2 = (My + 45) \ 45
IF Px2 < 5 THEN IF Py2 = 1 THEN EXIT DO
END IF
LOOP
SELECT CASE Px2
CASE 1: P = R0
CASE 2: P = N0
CASE 3: P = B0
CASE 4: P = Q0
END SELECT
Board(Px, Py) = P
END IF
ELSE
IF Py = 14 THEN
LINE (0, 0)-(140, 45), _RGB32(240, 240, 240), BF
_PUTIMAGE (5, 5), Img&(7)
_PUTIMAGE (50, 5), Img&(5)
_PUTIMAGE (95, 5), Img&(3)
_PUTIMAGE (140, 5), Img&(1)
DO
Mouse
IF Mb1 THEN
Px2 = (Mx + 45) \ 45
Py2 = (My + 45) \ 45
IF Px2 < 5 THEN IF Py2 = 1 THEN EXIT DO
END IF
LOOP
SELECT CASE Px2
CASE 1: P = R0
CASE 2: P = N0
CASE 3: P = B0
CASE 4: P = Q0
END SELECT
Board(Px, Py) = -P
END IF
END IF
CASE PN, PB, PR
IF Move = 1 THEN
IF Py = 1 THEN
LINE (0, 0)-(140, 45), _RGB32(240, 240, 240), BF
_PUTIMAGE (5, 5), Img&(18)
_PUTIMAGE (50, 5), Img&(20)
_PUTIMAGE (95, 5), Img&(22)
_PUTIMAGE (140, 5), Img&(23)
DO
Mouse
IF Mb1 THEN
Px2 = (Mx + 45) \ 45
Py2 = (My + 45) \ 45
IF Px2 < 5 THEN IF Py2 = 1 THEN EXIT DO
END IF
LOOP
SELECT CASE Px2
CASE 1: P = NR
CASE 2: P = BN
CASE 3: P = QN
CASE 4: P = Q0
END SELECT
Board(Px, Py) = P
END IF
ELSE
IF Py = 14 THEN
LINE (0, 0)-(140, 45), _RGB32(240, 240, 240), BF
_PUTIMAGE (5, 5), Img&(6)
_PUTIMAGE (50, 5), Img&(4)
_PUTIMAGE (95, 5), Img&(2)
_PUTIMAGE (140, 5), Img&(1)
DO
Mouse
IF Mb1 THEN
Px2 = (Mx + 45) \ 45
Py2 = (My + 45) \ 45
IF Px2 < 5 THEN IF Py2 = 1 THEN EXIT DO
END IF
LOOP
SELECT CASE Px2
CASE 1: P = NR
CASE 2: P = BN
CASE 3: P = QN
CASE 4: P = Q0
END SELECT
Board(Px, Py) = -P
END IF
END IF
CASE K0
IF Move = 1 THEN
IF Py = 14 THEN
IF Px = 13 THEN
IF WCS THEN
Board(14, 14) = 0
Board(12, 14) = R0
END IF
ELSEIF Px = 3 THEN
IF WCL THEN
Board(1, 14) = 0
Board(4, 14) = R0
END IF
END IF
END IF
WCS = 0
WCL = 0
ELSE
IF Py = 1 THEN
IF Px = 13 THEN
IF BCS THEN
Board(14, 1) = 0
Board(12, 1) = -R0
END IF
ELSEIF Px = 3 THEN
IF BCL THEN
Board(1, 1) = 0
Board(4, 1) = -R0
END IF
END IF
END IF
BCS = 0
BCL = 0
END IF
CASE R0
IF Move = 1 THEN
IF Oy = 14 THEN
IF Ox = 1 THEN WCL = 0 ELSE IF Ox = 14 THEN WCS = 0
END IF
ELSE
IF Oy = 1 THEN
IF Ox = 1 THEN BCL = 0 ELSE IF Ox = 14 THEN BCS = 0
END IF
END IF
END SELECT
DrawBoard
Ox = 0
Oy = 0
Move = -Move
DO: Mouse
LOOP UNTIL Mb1 = 0
ELSE
IF SGN(Board(Px, Py)) = Move THEN
GetLegalSquares Px, Py, X(), Y()
IF UBOUND(X) = -1 GOTO NextLoop
Ox = Px
Oy = Py
DrawSquare Px, Py, _RGB32(180, 180, 15)
FOR z = 0 TO UBOUND(X)
DrawSquare X(z), Y(z), _RGB32(15, 15, 180)
NEXT z
END IF
END IF
ELSEIF Mb2 THEN
IF Ox THEN
DrawBoard
Ox = 0
Oy = 0
END IF
END IF
NextLoop: LOOP UNTIL _KEYHIT = 27
SYSTEM
BoardData:
DATA -5,-6,-7,-8,-9,-11,-10,-12,-11,-9,-8,-7,-6,-5
DATA -2,-3,-2,-4,-2,-03,-04,-04,-03,-2,-4,-2,-3,-2
DATA -1,-1,-1,-1,-1,-01,-01,-01,-01,-1,-1,-1,-1,-1
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 00,00,00,00,00,000,000,000,000,00,00,00,00,00
DATA 01,01,01,01,01,001,001,001,001,01,01,01,01,01
DATA 02,03,02,04,02,003,004,004,003,02,04,02,03,02
DATA 05,06,07,08,09,011,010,012,011,09,08,07,06,05
RETURN
Errs:
BEEP
RESUME NEXT
FUNCTION Convert$ (Piece)
SELECT CASE ABS(Piece)
CASE P0: Convert$ = "P"
CASE PN: Convert$ = "PN"
CASE PB: Convert$ = "PB"
CASE PR: Convert$ = "PR"
CASE R0: Convert$ = "R"
CASE NR: Convert$ = "NR"
CASE N0: Convert$ = "N"
CASE BN: Convert$ = "BN"
CASE B0: Convert$ = "B"
CASE QN: Convert$ = "QN"
CASE Q0: Convert$ = "Q"
CASE K0: Convert$ = "K"
END SELECT
END FUNCTION
SUB Mouse
WHILE _MOUSEINPUT: WEND
Mx = _MOUSEX
My = _MOUSEY
Mb1 = _MOUSEBUTTON(1)
Mb2 = _MOUSEBUTTON(2)
END SUB
SUB DrawBoard
FOR i = 1 TO 14
FOR j = 1 TO 14
IF (i + j) MOD 2 THEN
DrawSquare i, j, _RGB32(250, 10, 20)
ELSE
DrawSquare i, j, _RGB32(20, 200, 20)
END IF
NEXT j, i
END SUB
SUB DrawSquare (i, j, Clr1~&)
LINE (45 * i - 45, 45 * j - 45)-STEP(45, 45), Clr1~&, BF
_PUTIMAGE (45 * i - 40, 45 * j - 40), Img&(Board(i, j) + 12)
END SUB
SUB GetLegalSquares (A, B, X(), Y())
C = SGN(Board(A, B))
REDIM X(-1), Y(-1): N = -1
SELECT CASE ABS(Board(A, B))
CASE P0
IF C = 1 THEN
SELECT EVERYCASE B
CASE IS = 12
IF Board(A, 11) <> 0 GOTO break1
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 11
CASE IS >= 11
IF Board(A, 10) <> 0 GOTO break1
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 10
CASE IS >= 10
IF Board(A, 9) <> 0 GOTO break1
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 9
CASE IS >= 9
IF Board(A, 8) <> 0 GOTO break1
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 8
CASE 8, 7, 6, 5, 4, 3, 2
IF Board(A, B - 1) <> 0 GOTO break1
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = B - 1
END SELECT
break1:
IF A - 1 > 0 THEN
IF Board(A - 1, B - 1) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B - 1
END IF: END IF
IF A + 1 < 15 THEN
IF Board(A + 1, B - 1) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 1
Y(N) = B - 1
END IF: END IF
ELSE
SELECT EVERYCASE B
CASE IS = 3
IF Board(A, 4) <> 0 GOTO break2
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 4
CASE IS <= 4
IF Board(A, 5) <> 0 GOTO break2
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 5
CASE IS <= 5
IF Board(A, 6) <> 0 GOTO break2
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 6
CASE IS <= 6
IF Board(A, 7) <> 0 GOTO break2
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = 7
CASE 7, 8, 9, 10, 11, 12, 13, 14
IF Board(A, B + 1) <> 0 GOTO break2
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = B + 1
END SELECT
break2:
IF A - 1 > 0 THEN
IF Board(A - 1, B + 1) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B + 1
END IF: END IF
IF A + 1 < 15 THEN
IF Board(A + 1, B + 1) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 1
Y(N) = B + 1
END IF: END IF
END IF
CASE PN
IF C = 1 THEN
IF A >= 3 THEN
IF B >= 2 THEN
IF Board(A - 2, B - 1) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 2
Y(N) = B - 1
END IF: END IF: END IF
IF A >= 2 THEN
IF B >= 3 THEN
IF Board(A - 1, B - 2) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B - 2
END IF: END IF: END IF
IF A <= 12 THEN
IF B >= 2 THEN
IF Board(A + 2, B - 1) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 2
Y(N) = B - 1
END IF: END IF: END IF
IF A <= 13 THEN
IF B >= 3 THEN
IF Board(A + 1, B - 2) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 1
Y(N) = B - 2
END IF: END IF: END IF
i = A: j = B
DO UNTIL i = 1 OR j = 1
i = i - 1: j = j - 1
IF Board(i, j) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
END IF
IF Board(i, j) <> 0 THEN EXIT DO
LOOP
i = A: j = B
DO UNTIL i = 14 OR j = 1
i = i + 1: j = j - 1
IF Board(i, j) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
END IF
IF Board(i, j) <> 0 THEN EXIT DO
LOOP
IF A > 1 THEN
FOR i = A - 1 TO 1 STEP -1
IF Board(i, B) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A < 14 THEN
FOR i = A + 1 TO 14
IF Board(i, B) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF B > 1 THEN
FOR i = B - 1 TO 1 STEP -1
IF Board(A, i) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = i
END IF
IF Board(A, i) <> 0 THEN EXIT FOR
NEXT i
END IF
ELSE
IF A >= 3 THEN
IF B <= 13 THEN
IF Board(A - 2, B + 1) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 2
Y(N) = B + 1
END IF: END IF: END IF
IF A >= 2 THEN
IF B <= 12 THEN
IF Board(A - 1, B + 2) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B + 2
END IF: END IF: END IF
IF A <= 12 THEN
IF B <= 13 THEN
IF Board(A + 2, B + 1) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 2
Y(N) = B + 1
END IF: END IF: END IF
IF A <= 13 THEN
IF B <= 12 THEN
IF Board(A + 1, B + 2) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 1
Y(N) = B + 2
END IF: END IF: END IF
i = A: j = B
DO UNTIL i = 1 OR j = 14
i = i - 1: j = j + 1
IF Board(i, j) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
END IF
IF Board(i, j) <> 0 THEN EXIT DO
LOOP
i = A: j = B
DO UNTIL i = 14 OR j = 14
i = i + 1: j = j + 1
IF Board(i, j) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
END IF
IF Board(i, j) <> 0 THEN EXIT DO
LOOP
IF A > 1 THEN
FOR i = A - 1 TO 1 STEP -1
IF Board(i, B) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A < 14 THEN
FOR i = A + 1 TO 14
IF Board(i, B) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF B < 14 THEN
FOR i = B + 1 TO 14
IF Board(A, i) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = i
END IF
IF Board(A, i) <> 0 THEN EXIT FOR
NEXT i
END IF
END IF
CASE PB
IF C = 1 THEN
i = A: j = B
DO UNTIL i = 1 OR j = 1
i = i - 1: j = j - 1
IF Board(i, j) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
ELSE
EXIT DO
END IF
LOOP
i = A: j = B
DO UNTIL i = 14 OR j = 1
i = i + 1: j = j - 1
IF Board(i, j) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
ELSE
EXIT DO
END IF
LOOP
IF A > 1 THEN
FOR i = A - 1 TO 1 STEP -1
IF Board(i, B) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A < 14 THEN
FOR i = A + 1 TO 14
IF Board(i, B) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF B > 1 THEN
FOR i = B - 1 TO 1 STEP -1
IF Board(A, i) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = i
END IF
IF Board(A, i) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A >= 3 THEN
IF B >= 2 THEN
IF Board(A - 2, B - 1) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 2
Y(N) = B - 1
END IF: END IF: END IF
IF A >= 2 THEN
IF B >= 3 THEN
IF Board(A - 1, B - 2) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B - 2
END IF: END IF: END IF
IF A <= 12 THEN
IF B >= 2 THEN
IF Board(A + 2, B - 1) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 2
Y(N) = B - 1
END IF: END IF: END IF
IF A <= 13 THEN
IF B >= 3 THEN
IF Board(A + 1, B - 2) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 1
Y(N) = B - 2
END IF: END IF: END IF
ELSE
i = A: j = B
DO UNTIL i = 1 OR j = 14
i = i - 1: j = j + 1
IF Board(i, j) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
ELSE
EXIT DO
END IF
LOOP
i = A: j = B
DO UNTIL i = 14 OR j = 14
i = i + 1: j = j + 1
IF Board(i, j) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
ELSE
EXIT DO
END IF
LOOP
IF A > 1 THEN
FOR i = A - 1 TO 1 STEP -1
IF Board(i, B) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A < 14 THEN
FOR i = A + 1 TO 14
IF Board(i, B) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF B < 14 THEN
FOR i = B + 1 TO 14
IF Board(A, i) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = i
END IF
IF Board(A, i) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A >= 3 THEN
IF B <= 13 THEN
IF Board(A - 2, B + 1) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 2
Y(N) = B + 1
END IF: END IF: END IF
IF A >= 2 THEN
IF B <= 12 THEN
IF Board(A - 1, B + 2) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B + 2
END IF: END IF: END IF
IF A <= 12 THEN
IF B <= 13 THEN
IF Board(A + 2, B + 1) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 2
Y(N) = B + 1
END IF: END IF: END IF
IF A <= 13 THEN
IF B <= 12 THEN
IF Board(A + 1, B + 2) > 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 1
Y(N) = B + 2
END IF: END IF: END IF
END IF
CASE PR
IF C = 1 THEN
IF A > 1 THEN
FOR i = A - 1 TO 1 STEP -1
IF Board(i, B) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF A < 14 THEN
FOR i = A + 1 TO 14
IF Board(i, B) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = B
END IF
IF Board(i, B) <> 0 THEN EXIT FOR
NEXT i
END IF
IF B > 1 THEN
FOR i = B - 1 TO 1 STEP -1
IF Board(A, i) = 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A
Y(N) = i
END IF
IF Board(A, i) <> 0 THEN EXIT FOR
NEXT i
END IF
i = A: j = B
DO UNTIL i = 1 OR j = 1
i = i - 1: j = j - 1
IF Board(i, j) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
END IF
IF Board(i, j) <> 0 THEN EXIT DO
LOOP
i = A: j = B
DO UNTIL i = 14 OR j = 1
i = i + 1: j = j - 1
IF Board(i, j) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = i
Y(N) = j
END IF
IF Board(i, j) <> 0 THEN EXIT DO
LOOP
IF A >= 3 THEN
IF B >= 2 THEN
IF Board(A - 2, B - 1) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 2
Y(N) = B - 1
END IF: END IF: END IF
IF A >= 2 THEN
IF B >= 3 THEN
IF Board(A - 1, B - 2) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A - 1
Y(N) = B - 2
END IF: END IF: END IF
IF A <= 12 THEN
IF B >= 2 THEN
IF Board(A + 2, B - 1) < 0 THEN
N = N + 1
REDIM _PRESERVE X(N), Y(N)
X(N) = A + 2
Y(N) = B - 1
END IF: END IF: END IF
IF A <= 13 THEN
IF B >= 3 THEN
IF Board(A + 1, B - 2) < 0 THEN