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-
- 'Tic Tac Toe
- 'Requires Liberty BASIC v0.9c or better
- 'Copyright 1993, Shoptalk Systems
- 'All Rights Reserved
-
- ' set up the board
- dim board$(9)
-
- print "Tic Tac Toe"
- print "Copyright 1993, Shoptalk Systems"
- print
- print "Instructions:"
- print
- print " In this game, you play against the"
- print " computer. You are X, and the computer"
- print " is O. The one to get 3 in a row wins."
- print " If no one gets three in a row, then"
- print " it is a draw."
- print
- print "- Press any key to play -" ' for Liberty BASIC 1.x, change to: print "Press Enter to play"
- h$ = input$(1) ' for Liberty BASIC 1.x, change to: input h$
-
- yourName$ = "Human"
- prompt "What is your name?"; yourName$
-
- WindowWidth = 330 ' for Liberty BASIC 1.x, change to: WindowWidth = 316
- WindowHeight = 400
- 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, 10, 10
- open "Tic Tac Toe Playing Board" for graphics as #brd ' for Liberty BASIC 1.x, change graphics to graphics_nsb
-
- [start] 'start game (or restart)
-
- for x = 1 to 9 : board$(x) = " " : next x
- gosub [modelBoard]
- turn = 0
- gosub [drawBoard]
-
- [playLoop]
-
-
- input position$
-
- goto [playLoop]
-
-
- [move]
-
- ' X moves
- if board$(int(val(position$))) <> " " then notice "Illegal Move!" : goto [playLoop]
- board$(val(position$)) = "X"
- gosub [drawX]
- gosub [modelBoard]
- gosub [checkForWinOrDraw]
-
- [skipMove]
-
- ' 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]
-
- [end]
-
- end
-
- [drawBoard]
-
- print #brd, "cls";
- print #brd, "fill lightgray";
- print #brd, "size 3 ; down";
- for x = 0 to 2
- for y = 0 to 2
- print #brd, "color darkgray";
- print #brd, "line "; 100*x+95; " "; 100*y+55; " "; 100*x+5; " "; 100*y+55
- print #brd, "line "; 100*x+5; " "; 100*y+55; " "; 100*x+5; " "; 100*y+145
- print #brd, "color white";
- print #brd, "line "; 100*x+95; " "; 100*y+55; " "; 100*x+95; " "; 100*y+145
- print #brd, "line "; 100*x+5; " "; 100*y+145; " "; 100*x+95; " "; 100*y+145
- next y
- next x
- print #brd, "flush"
-
- return
-
-
- [drawX]
-
- gosub [xlatePosition]
- print #brd, "size 6";
- print #brd, "color darkred";
- print #brd, "line "; squareX-10; " "; squareY-15; " "; squareX+20; " "; squareY+25
- print #brd, "line "; squareX+20; " "; squareY-15; " "; squareX-10; " "; squareY+25
- 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";
- print #brd, "color darkblue";
- print #brd, "place "; squareX+5; " "; squareY+5
- print #brd, "circle 20";
- print #brd, "color blue";
- print #brd, "place "; squareX; " "; squareY
- print #brd, "circle 20";
- print #brd, "flush";
-
- return
-
-
- [xlatePosition]
-
- position = val(position$)
-
- if instr("147", position$) > 0 then 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$(3)
-
- return
-
-
-
- [computeMove]
-
- 'check for instant win!
- print "" ;
-
- [instantWin]
-
- if row1$ = "OO " then position$ = "3" : return
- if row1$ = " OO" then position$ = "1" : return
- if row1$ = "O O" then position$ = "2" : return
- if row2$ = "OO " then position$ = "6" : return
- if row2$ = " OO" then position$ = "4" : return
- if row2$ = "O O" then position$ = "5" : return
- if row3$ = "OO " then position$ = "9" : return
- if row3$ = " OO" then position$ = "7" : return
- if row3$ = "O O" then position$ = "8" : return
-
- if col1$ = "OO " then position$ = "7" : return
- if col1$ = " OO" then position$ = "1" : return
- if col1$ = "O O" then position$ = "4" : return
- if col2$ = "OO " then position$ = "8" : return
- if col2$ = " OO" then position$ = "2" : return
- if col2$ = "O O" then position$ = "5" : return
- if col3$ = "OO " then position$ = "9" : return
- if col3$ = " OO" then position$ = "3" : return
- if col3$ = "O O" then position$ = "6" : return
-
- if diag1$ = "OO " then position$ = "9" : return
- if diag1$ = " OO" then position$ = "1" : return
- if diag1$ = "O O" then position$ = "5" : return
- if diag2$ = "OO " then position$ = "3" : return
- if diag2$ = " OO" then position$ = "7" : return
- if diag2$ = "O O" then position$ = "5" : return
-
- 'make the purely defensive moves
-
- if row1$ = "XX " then position$ = "3" : return
- if row1$ = " XX" then position$ = "1" : return
- if row1$ = "X X" then position$ = "2" : return
- if row2$ = "XX " then position$ = "6" : return
- if row2$ = " XX" then position$ = "4" : return
- if row2$ = "X X" then position$ = "5" : return
- if row3$ = "XX " then position$ = "9" : return
- if row3$ = " XX" then position$ = "7" : return
- if row3$ = "X X" then position$ = "8" : return
-
- if col1$ = "XX " then position$ = "7" : return
- if col1$ = " XX" then position$ = "1" : return
- if col1$ = "X X" then position$ = "4" : return
- if col2$ = "XX " then position$ = "8" : return
- if col2$ = " XX" then position$ = "2" : return
- if col2$ = "X X" then position$ = "5" : return
- if col3$ = "XX " then position$ = "9" : return
- if col3$ = " XX" then position$ = "3" : return
- if col3$ = "X X" then position$ = "6" : return
-
- if diag1$ = "XX " then position$ = "9" : return
- if diag1$ = " XX" then position$ = "1" : return
- if diag1$ = "X X" then position$ = "5" : return
- if diag2$ = "XX " then position$ = "3" : return
- if diag2$ = " XX" then position$ = "7" : return
- if diag2$ = "X X" then position$ = "5" : return
-
- ' now make the offensive moves
-
- moves$ = ""
-
- if instr(diag1$,"X") > 0 then [d2]
- if board$(1) = " " then moves$ = moves$ + "1"
- if board$(5) = " " then moves$ = moves$ + "5"
- if board$(9) = " " then moves$ = moves$ + "9"
- i = int(rnd(1)*len(moves$))+1
- position$ = mid$(moves$, i, 1)
- return
-
-
-
- [d2]
-
- if instr(diag2$,"X") > 0 then [moreMoves]
- if board$(7) = " " then moves$ = moves$ + "7"
- if board$(5) = " " then moves$ = moves$ + "5"
- if board$(3) = " " then moves$ = moves$ + "3"
- i = int(rnd(1)*len(moves$))+1
- position$ = mid$(moves$, i, 1)
- return
-
-
- [moreMoves]
-
- ' now make random moves
-
- all$ = row1$ + row2$ + row3$
- blanks$ = ""
- for i = 1 to 9
- if mid$(all$, i, 1) = " " then blanks$ = blanks$ + chr$(48+i)
- next i
- if blanks$ = "" then position$ = "" : return
- i = int(rnd(1)*len(blank$))+1
- position$ = mid$(blanks$, i, 1)
- return
-
- [error]
-
- notice "Error, no move computed"
- stop
-
-
- 'check to see if the game has been won or drawn
-
- [checkForWinOrDraw]
-
- ' check for win
- i$ = ","
- letter$ = "XXX"
- for i = 1 to 2
- if instr(row1$+i$+row2$+i$+row3$, letter$) > 0 then [win]
- if instr(col1$+i$+col2$+i$+col3$, letter$) > 0 then [win]
- if instr(diag1$+i$+diag2$, letter$) > 0 then [win]
- letter$ = "OOO"
- next i
-
- 'check to see if the board is full
- if instr(row1$+row2$+row3$, " ") > 0 then return
-
- 'the game is a draw
-
- confirm "Draw! Play again?"; play$
- if play$ = "yes" then [start]
- goto [quit]
-
-
- [win]
-
- if letter$ = "OOO" then notice "I WIN! HA HA HA!"
- if letter$ = "XXX" then notice "You win "; yourName$; "!!!, Bummer!"
- confirm "Play again?"; play$
- if letter$ = "OOO" and play$ = "no" then notice "Sore loser!"
- if play$ = "yes" then [start]
-
-
- [quit]
-
- close #brd
- cls
- print "-GAME OVER-, press ALT-F4 to exit"
- end
-
-