Update documentation of move command for new syntax

[loudgame] / lg-loa.c

diff --git a/lg-loa.c b/lg-loa.c
index b18b27d0ff417fb2738792ad4abebcfe028604f7..5a4d819de4543cfd24037aa648f8cda96b30e6e2 100644 (file)
--- a/lg-loa.c
+++ b/lg-loa.c
@@ -37,19 +37,17 @@ typedef struct _loa_game {
 static void
 loa_game_new_game (loa_game_t *game)
 {
-    loa_board_init (&game->board);
+    loa_board_reset (&game->board);
 }
 
 static loa_bool_t
-loa_game_move (loa_game_t *game, const char * peer,
-              int x1, int y1, int x2, int y2)
+loa_game_move (loa_game_t *game, const char * peer, loa_move_t *move)
 {
     char *error;
 
-    if (! loa_board_move (&game->board, x1, y1, x2, y2, &error)) {
-       loudgame_sendf (&game->lg, peer, "Illegal move: %c%d%c%d",
-                       'a' + x1, LOA_BOARD_SIZE - y1,
-                       'a' + x2, LOA_BOARD_SIZE - y2);
+    if (! loa_board_move (&game->board, move, &error)) {
+       loudgame_sendf (&game->lg, peer, "Illegal move: %s: %s",
+                       loa_move_to_string (move), error);
        return FALSE;
     }
 
@@ -113,35 +111,36 @@ loa_game_handle_show (loa_game_t *game,
 static void
 loa_game_handle_move (loa_game_t *game,
                      const char *peer,
-                     const char *move)
+                     const char *move_string)
 {
-    char xc1, xc2;
-    int x1, y1, x2, y2;
-    int matched;
+    loa_move_t move;
 
-    matched = sscanf (move, " %c %d %c %d ", &xc1, &y1, &xc2, &y2);
-    if (matched != 4) {
+    if (! loa_move_init_from_string (&move, move_string)) {
        loudgame_sendf (&game->lg, peer,
-                       "Error: The 'move' command requires a move of the form 'b1d3'");
+                       "Error: The 'move' command requires a move of the form 'b1-d3'");
        return;
     }
 
-    x1 = tolower (xc1) - 'a';
-    x2 = tolower (xc2) - 'a';
-    /* We use an upper-left origin internally. */
-    y1 = LOA_BOARD_SIZE - y1;
-    y2 = LOA_BOARD_SIZE - y2;
-    if (! loa_game_move (game, peer, x1, y1, x2, y2))
+    if (! loa_game_move (game, peer, &move))
        return;
 
-    loudgame_broadcastf (&game->lg, "%c%d%c%d",
-                        'a' + x1, LOA_BOARD_SIZE - y1,
-                        'a' + x2, LOA_BOARD_SIZE - y2);
+    loudgame_broadcastf (&game->lg, "%s", loa_move_to_string (&move));
 
-    if (loa_board_is_won (&game->board, x2, y2))
+    if (loa_board_is_won (&game->board, move.x2, move.y2))
        loudgame_broadcastf (&game->lg, "%s wins", peer);
 }
 
+static void
+loa_game_handle_history (loa_game_t *game,
+                        const char *peer)
+{
+    int i;
+
+    for (i = 0; i < game->board.num_moves; i++)
+       loudgame_sendf (&game->lg, peer, "%s",
+                       loa_move_to_string (&game->board.moves[i]));
+}
+
 static void
 loa_game_handle_pass (loa_game_t *game, const char *peer)
 {
@@ -164,9 +163,10 @@ loa_game_handle_help (loa_game_t *game, const char *peer)
                    "\n"
                    "And some game-specific commands:\n"
                    "\tshow     \t\tShow the current board\n"
-                   "\tmove aNbN\tMove a piece, (eg. 'move b1d3')\n"
+                   "\tmove aNbN\tMove a piece, (eg. 'move b1-d3')\n"
                    "\tpass     \t\tSkip a turn (only legal if no moves are possible)\n"
                    "\tnew      \t\tBegin a new game\n"
+                   "\thistory  \t\tShow the move history of the game\n"
                    "\thelp     \t\tThis help message\n"
                    "\trules    \t\tA description of the Lines of Action rules\n"
                    "\n"
@@ -243,6 +243,8 @@ loa_game_handle_message (loudgame_t *lg,
        loa_game_handle_pass (game, peer);
     else if (strcmp (message, "new") == 0)
        loa_game_handle_new (game, peer);
+    else if (strcmp (message, "history") == 0)
+       loa_game_handle_history (game, peer);
     else if (strcmp (message, "help") == 0)
        loa_game_handle_help (game, peer);
     else if (strcmp (message, "rules") == 0)
@@ -260,6 +262,8 @@ loa_game_init (loa_game_t *game, int argc, char *argv[])
     if (err)
        return err;
 
+    loa_board_init (&game->board);
+
     loa_game_new_game (game);
 
     return 0;