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Minor fixes to tic-tac-toe #9

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Minor fixes to tic-tac-toe #9

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24 changes: 15 additions & 9 deletions tictactoe.pl
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Original file line number Diff line number Diff line change
Expand Up @@ -10,35 +10,41 @@
'
*/
/* a little wrapper to make starting a game convenient */
tictactoe :- game([b,b,b,b,b,b,b,b,b], x).
tictactoe :- write('Enter 1..9 at > to make a move.'),nl,game([b,b,b,b,b,b,b,b,b], x).

/* the core recursive call to play the game */
game(Board , _) :- win(x, Board),write('you win!').
game(Board , _) :- win(o, Board),write('I win!').
game(Board , _) :- win(x, Board),showBoard(Board),write('You win!'),nl.
game(Board , _) :- win(o, Board),showBoard(Board),write('I win!'),nl.
game(Board , _) :- cat(Board). /* no more moves - not technically cat */
game(Board , x) :- moveUser(Board , NewBoard) , game(NewBoard , o).
game(Board , o) :- moveComputer(Board , NewBoard), game(NewBoard , x).

moveUser(Board , NewBoard) :- showBoard(Board), put('*'),get_char(Y), get_char(_), name(Y , [X]),
moveUser(Board , NewBoard) :- showBoard(Board), put('>'),get_char(Y), get_char(_), name(Y , [X]),
Loc is X - 48, !,procUserMove(Loc,Board,NewBoard).

procUserMove(Loc,Board,NewBoard) :- Loc > 0, Loc < 10, playAt(x , Loc , Board , NewBoard).
/* this handles the invalid case */
procUserMove(_,Board,_) :- write('invalid move'),!, game(Board,x).
procUserMove(_,Board,_) :- write('Invalid move, try again.'),nl,!, game(Board,x).

/* lists must be same length tim- these were getting triggered, how?
playAt(_ , _ , [_|_] , []) :- !,fail.
```````````````````````````````````````````````````playAt(_ , _ , [_|_] , []) :-
!,fail.
playAt(_ , _ , [] , [_|_]) :- !,fail. */
playAt(Player , 1 , [b|Tail] , [Player|Tail]).
playAt(Player , Loc , [H|TBoard] , [H|TNewBoard]) :-
Loc > 1,
M is Loc - 1 ,
playAt(Player , M , TBoard , TNewBoard).

%showBoard([]).
%showBoard([H|T]) :- put(H),showBoard1(T).
%showBoard1([H|T]) :- put(H),showBoard2(T).
%showBoard2([H|T]) :- put(H),nl,showBoard(T),nl.
showBoard([]).
showBoard([H|T]) :- put(H),showBoard1(T).
showBoard1([H|T]) :- put(H),showBoard2(T).
showBoard2([H|T]) :- put(H),nl,showBoard(T).
showBoard([A,B,C|T]) :- put(A),put(B),put(C),nl,showBoard1(T). %vp change
showBoard1([A,B,C|T]) :- put(A),put(B),put(C),nl,showBoard2(T). %vp change
showBoard2([A,B,C|T]) :- put(A),put(B),put(C),nl,showBoard(T). %vp change


win(A , [A,A,A,_,_,_,_,_,_]).
win(A , [_,_,_,A,A,A,_,_,_]).
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