#include "ttt-board.h"
-int ttt_board_is_won (ttt_board_t *board)
-{
- if (
- (board->cells[0] == board->cells[3] && board->cells[3] == board->cells[6] && board->cells[0] != TTT_CELL_EMPTY) ||
- (board->cells[1] == board->cells[4] && board->cells[4] == board->cells[7] && board->cells[1] != TTT_CELL_EMPTY) ||
- (board->cells[2] == board->cells[5] && board->cells[5] == board->cells[8] && board->cells[2] != TTT_CELL_EMPTY) ||
- (board->cells[0] == board->cells[1] && board->cells[1] == board->cells[2] && board->cells[0] != TTT_CELL_EMPTY) ||
- (board->cells[3] == board->cells[4] && board->cells[4] == board->cells[5] && board->cells[3] != TTT_CELL_EMPTY) ||
- (board->cells[6] == board->cells[7] && board->cells[7] == board->cells[8] && board->cells[6] != TTT_CELL_EMPTY) ||
- (board->cells[0] == board->cells[4] && board->cells[4] == board->cells[8] && board->cells[0] != TTT_CELL_EMPTY) ||
- (board->cells[2] == board->cells[4] && board->cells[4] == board->cells[6] && board->cells[2] != TTT_CELL_EMPTY)
- )
- {
- printf ("%c's Win! ", board->current_player);
- return(1);
- }
- else
- return(0);
-}
+ttt_cell_t ttt_test_board_is_won (ttt_board_t *board);
int
main (void)
printf ("getchar returned a numeric value of %d which is character '%c'\n", m, m);
m = m - '0';
ttt_board_make_move (&board, m);
+ ttt_board_is_won (&board);
+ if (ttt_board_is_won (&board) == TTT_CELL_X)
+ {
+ printf ("X's Win! ");
+ break;
+ }
+ else if (ttt_board_is_won (&board) == TTT_CELL_O)
+ {
+ printf ("O's Win! ");
+ break;
+ }
}
printf ("This is the board \"");
return TTT_ERROR_NOT_VALID_MOVE;
board->cells[move] = board->current_player;
-
+
if (board->current_player == TTT_CELL_X)
- {
- ttt_board_is_won (board);
board->current_player = TTT_CELL_O;
- }
else
- {
- ttt_board_is_won (board);
board->current_player = TTT_CELL_X;
- }
return TTT_ERROR_NONE;
}
+/* Checks to see if a player has won the game and should be called after every move.
+ *
+ * Returns: TTT_CELL_X if X's win. TTT_CELL_O if O's win.
+ * The game can then check the value of the return and declare the winner.
+ */
-
-
-
-
+ttt_cell_t ttt_board_is_won (ttt_board_t *board)
+{
+ int i;
+ for (i = 0; i <= 2; i++)
+ {
+ if (board->cells[i] != TTT_CELL_EMPTY && board->cells[i] == board->cells[i + 3] && board->cells[i] == board->cells[i + 6])
+ return(board->cells[i]);
+ else if (board->cells[i * 3] != TTT_CELL_EMPTY && board->cells[i * 3] == board->cells[(i * 3) + 1] && board->cells[i * 3] == board->cells[(i * 3) + 2])
+ return(board->cells[i * 3]);
+ }
+ if (board->cells[0] != TTT_CELL_EMPTY && board->cells[0] == board->cells[4] && board->cells[0]== board->cells[8])
+ return(board->cells[0]);
+ if (board->cells[2] != TTT_CELL_EMPTY && board->cells[2] == board->cells[4] && board->cells[2]== board->cells[6])
+ return(board->cells[2]);
+ return(TTT_CELL_EMPTY);
+}
ttt_error_t
ttt_board_make_move (ttt_board_t *board, int move);
-int
+ttt_cell_t
ttt_board_is_won (ttt_board_t *board);
#endif