Second draft attempt at ttt_board_is_won

[ttt] / src / ttt-board.c

diff --git a/src/ttt-board.c b/src/ttt-board.c
index dd068b5850285110f84e5436f2fa99c960b2910d..dfddf35ec168297011979468231596785870dafd 100644 (file)
--- a/src/ttt-board.c
+++ b/src/ttt-board.c
@@ -19,7 +19,9 @@
  * Author: Carl Worth <cworth@cworth.org>
  */
 
+#include <stdio.h>
 #include "ttt-board.h"
+#include "ttt-error.h"
 
 /* Initialize an empty board. */
 void
@@ -30,6 +32,7 @@ ttt_board_init (ttt_board_t *board)
     {
        board->cells[i] = TTT_CELL_EMPTY;
     }
+    board->current_player = TTT_CELL_X;
 }
 
 /* Initialize a board from its string representation.
@@ -82,3 +85,39 @@ ttt_board_write (ttt_board_t *board, FILE *file)
     free (s);
 }
 
+/* Makes a new move in the given board.
+ *
+ * The move value is a number from 0 to 9 giving the position to be
+ * moved as follows:
+ * 
+ *  0|1|2
+ *  3|4|5
+ *  6|7|8
+ *
+ * Returns: TTT_ERROR_NONE if a move is made succesfully. TTT_ERROR_NOT_VALID_MOVE
+ * if a move is invalid (the given cell is not empty).
+ */
+
+ttt_error_t ttt_board_make_move (ttt_board_t *board, int move)
+{  
+    if (board->cells[move] != TTT_CELL_EMPTY)
+       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
+       board->current_player = TTT_CELL_X;
+    
+    return TTT_ERROR_NONE;
+}
+
+
+
+
+
+