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-
- 'Tic Tac Toe
- 'Requires Liberty BASIC v2.0 or better
- 'Copyright 1993,2001 Shoptalk Systems
- 'All Rights Reserved
-
- nomainwin
-
- loadbmp "title", "bmp\titlettt.bmp"
- loadbmp "square", "bmp\squarttt.bmp"
-
- WindowWidth = 314
- WindowHeight = 380
- button #brd, " T ", [1], UL, 10, 60
- button #brd, " I ", [2], UL, 110, 60
- button #brd, " C ", [3], UL, 210, 60
- button #brd, " T ", [4], UL, 10, 160
- button #brd, " A ", [5], UL, 110, 160
- button #brd, " C ", [6], UL, 210, 160
- button #brd, " T ", [7], UL, 10, 260
- button #brd, " O ", [8], UL, 110, 260
- button #brd, " E ", [9], UL, 210, 260
- button #brd, "Pass Move", [skipMove], UL, 210, 10
- open "Tic Tac Toe Playing Board" for graphics_nsb as #brd
- print #brd, "trapclose [quit]";
- print #brd, "size 3 ; down";
-
- [start] 'start game (or restart)
-
- gosub [drawBoard]
- for x = 1 to 9 : board$(x) = " " : next x
- gosub [modelBoard]
- turn = 0
- true = 1
- false = 0
- pass = false
- moveCounter = 0
-
- [playLoop]
-
-
- input position$
-
- goto [playLoop]
-
-
- [move]
-
- ' X moves
- if board$(val(position$)) <> " " then notice "Illegal Move!" : goto [playLoop]
- moveCounter = moveCounter + 1
- pass = false
- board$(val(position$)) = "X"
- gosub [drawX]
- gosub [modelBoard]
- gosub [checkForWinOrDraw]
- position$ = ""
- goto [oMoves]
-
- [skipMove]
-
- pass = true
-
- [oMoves]
-
- ' O moves
- gosub [computeMove]
- board$(val(position$)) = "O"
- gosub [drawO]
- gosub [modelBoard]
- gosub [checkForWinOrDraw]
-
- goto [playLoop]
-
-
- [1]
- position$ = "1" : goto [move]
- [2]
- position$ = "2" : goto [move]
- [3]
- position$ = "3" : goto [move]
- [4]
- position$ = "4" : goto [move]
- [5]
- position$ = "5" : goto [move]
- [6]
- position$ = "6" : goto [move]
- [7]
- position$ = "7" : goto [move]
- [8]
- position$ = "8" : goto [move]
- [9]
- position$ = "9" : goto [move]
-
-
- [drawBoard]
-
- print #brd, "cls ; fill lightgray ; drawbmp title 7 2";
- for x = 4 to 204 step 100
- for y = 54 to 254 step 100
- print #brd, "drawbmp square "; x; " "; y ;
- next y
- next x
- print #brd, "flush";
- return
-
- [drawX]
-
- gosub [xlatePosition]
- print #brd, "size 6 ; color darkred";
- print #brd, "line "; squareX-11; " "; squareY-16; " "; squareX+19; " "; squareY+24
- print #brd, "line "; squareX+19; " "; squareY-16; " "; squareX-11; " "; squareY+24
- print #brd, "color red";
- print #brd, "line "; squareX-15; " "; squareY-20; " "; squareX+15; " "; squareY+20
- print #brd, "line "; squareX+15; " "; squareY-20; " "; squareX-15; " "; squareY+20
- print #brd, "flush";
-
- return
-
-
- [drawO]
-
- gosub [xlatePosition]
- print #brd, "size 7 ; color darkblue";
- print #brd, "place "; squareX+5; " "; squareY+5
- print #brd, "circle 20 ; color blue";
- print #brd, "place "; squareX; " "; squareY
- print #brd, "circle 20 ; flush";
-
- return
-
-
- [xlatePosition]
-
- squareX = 55
- if instr("258", position$) > 0 then squareX = 155
- if instr("369", position$) > 0 then squareX = 255
-
- squareY = int((val(position$)+2)/3)*100+5
-
- return
-
-
- [modelBoard]
-
- row1$ = board$(1)+board$(2)+board$(3)
- row2$ = board$(4)+board$(5)+board$(6)
- row3$ = board$(7)+board$(8)+board$(9)
-
- col1$ = board$(1)+board$(4)+board$(7)
- col2$ = board$(2)+board$(5)+board$(8)
- col3$ = board$(3)+board$(6)+board$(9)
-
- diag1$ = board$(1)+board$(5)+board$(9)
- diag2$ = board$(7)+board$(5)+board$(3)
-
- return
-
-
-
- [computeMove]
-
-
- 'check for instant win!
-
- if row1$ = "OO " then position$ = "3"
- if row1$ = " OO" then position$ = "1"
- if row1$ = "O O" then position$ = "2"
- if row2$ = "OO " then position$ = "6"
- if row2$ = " OO" then position$ = "4"
- if row2$ = "O O" then position$ = "5"
- if row3$ = "OO " then position$ = "9"
- if row3$ = " OO" then position$ = "7"
- if row3$ = "O O" then position$ = "8"
-
- if col1$ = "OO " then position$ = "7"
- if col1$ = " OO" then position$ = "1"
- if col1$ = "O O" then position$ = "4"
- if col2$ = "OO " then position$ = "8"
- if col2$ = " OO" then position$ = "2"
- if col2$ = "O O" then position$ = "5"
- if col3$ = "OO " then position$ = "9"
- if col3$ = " OO" then position$ = "3"
- if col3$ = "O O" then position$ = "6"
-
- if diag1$ = "OO " then position$ = "9"
- if diag1$ = " OO" then position$ = "1"
- if diag1$ = "O O" then position$ = "5"
- if diag2$ = "OO " then position$ = "3"
- if diag2$ = " OO" then position$ = "7"
- if diag2$ = "O O" then position$ = "5"
-
- 'make the purely defensive moves
-
- if row1$ = "XX " then position$ = "3"
- if row1$ = " XX" then position$ = "1"
- if row1$ = "X X" then position$ = "2"
- if row2$ = "XX " then position$ = "6"
- if row2$ = " XX" then position$ = "4"
- if row2$ = "X X" then position$ = "5"
- if row3$ = "XX " then position$ = "9"
- if row3$ = " XX" then position$ = "7"
- if row3$ = "X X" then position$ = "8"
-
- if col1$ = "XX " then position$ = "7"
- if col1$ = " XX" then position$ = "1"
- if col1$ = "X X" then position$ = "4"
- if col2$ = "XX " then position$ = "8"
- if col2$ = " XX" then position$ = "2"
- if col2$ = "X X" then position$ = "5"
- if col3$ = "XX " then position$ = "9"
- if col3$ = " XX" then position$ = "3"
- if col3$ = "X X" then position$ = "6"
-
- if diag1$ = "XX " then position$ = "9"
- if diag1$ = " XX" then position$ = "1"
- if diag1$ = "X X" then position$ = "5"
- if diag2$ = "XX " then position$ = "3"
- if diag2$ = " XX" then position$ = "7"
- if diag2$ = "X X" then position$ = "5"
- if position$ <> "" then return
-
-
- [attack]
-
- ' now make the offensive moves
-
- moves$ = ""
-
- if instr(diag1$,"X") = 0 then
- moves$ = moves$ + mid$("159", instr(diag1$, " "), 1)
- else
- if instr(diag2$,"X") = 0 then
- moves$ = moves$ + mid$("357", instr(diag2$, " "), 1)
- else
- ' now make random moves
- all$ = row1$ + row2$ + row3$
- for i = 1 to 9
- if mid$(all$, i, 1) = " " then moves$ = moves$ + chr$(48+i)
- next i
- if moves$ = "" then position$ = "" : return
- end if
- end if
- i = int(rnd(1)*len(moves$))+1
- position$ = mid$(moves$, i, 1)
- return
-
- [checkForWinOrDraw]
-
- ' check for win
- letter$ = "XXX"
- for i = 1 to 2
- if instr(row1$+","+row2$+","+row3$, letter$) then [win]
- if instr(col1$+","+col2$+","+col3$, letter$) then [win]
- if instr(diag1$+","+diag2$, letter$) then [win]
- letter$ = "OOO"
- next i
-
- 'check to see if the board is full
- if instr(row1$+row2$+row3$, " ") then return
-
- 'the game is a draw
-
- notice "Draw!"
- goto [askPlayAgain]
-
-
- [win]
-
- if letter$ = "OOO" then notice "I WIN! HA HA HA!"
- if letter$ = "XXX" then notice "You win!!! Bummer!"
-
- [askPlayAgain]
-
- confirm "Play again?"; play$
- if play$ = "yes" then [start]
-
- [quit]
-
- close #brd
- end
-
-
-