/* Common code for fixed_handicap and place_free_handicap. */
static int
place_handicap(char *s, int fixed)
{
int handicap;
int m, n;
int first_stone = 1;
if (!board_empty())
return gtp_failure("board not empty");
if (sscanf(s, "%d", &handicap) < 1)
return gtp_failure("handicap not an integer");
if (handicap < 2)
return gtp_failure("invalid handicap");
if (fixed && !valid_fixed_handicap(handicap))
return gtp_failure("invalid handicap");
if (fixed)
place_fixed_handicap(handicap);
else
place_free_handicap(handicap);
gtp_start_response(GTP_SUCCESS);
for (m = 0; m < board_size; m++)
for (n = 0; n < board_size; n++)
if (get_board(m, n) != EMPTY) {
if (first_stone)
first_stone = 0;
else
gtp_printf(" ");
gtp_mprintf("%m", m, n);
}
return gtp_finish_response();
}
static void
ascii_free_handicap(Gameinfo *gameinfo, char *handicap_string)
{
int handi;
int i;
char line[80];
int stones[MAX_BOARD*MAX_BOARD];
if (sscanf(handicap_string, "%d", &handi) == 1) {
/* GNU Go is to place handicap */
if (handi < 0 || handi == 1) {
printf("\nInvalid command syntax!\n");
return;
}
clear_board();
handi = place_free_handicap(handi);
printf("\nPlaced %d stones of free handicap.\n", handi);
}
else { /* User is to place handicap */
clear_board();
handi = 0;
while (1) {
ascii_showboard();
printf("\nType in coordinates of next handicap stone, or one of the following commands:\n");
printf(" undo take back the last stone placed\n");
printf(" clear remove all the stones placed so far\n");
printf(" done finish placing handicap\n\n");
printf("You have placed %d handicap stone(s) so far.\n\n", handi);
if (!fgets(line, 80, stdin))
return; /* EOF or some error */
for (i = 0; i < 80; i++)
line[i] = tolower((int) line[i]);
if (!strncmp(line, "undo", 4)) {
if (!handi)
printf("\nNothing to undo.\n");
else {
remove_stone(stones[--handi]);
gprintf("\nRemoved the stone at %m.\n", I(stones[handi]),
J(stones[handi]));
}
}
else if (!strncmp(line, "clear", 5)) {
clear_board();
handi = 0;
}
else if (!strncmp(line, "done", 4)) {
if (handi == 1) /* Don't bother with checks later */
printf("\nHandicap cannot be one stone. Either add "
"some more, or delete the only stone.\n");
else
break;
}
else {
int pos = string_to_location(board_size, line);
if (pos != NO_MOVE) {
if (board[pos] != EMPTY)
printf("\nThere's already a stone there.\n");
else {
add_stone(pos, BLACK);
stones[handi++] = pos;
}
}
else
printf("\nInvalid command: %s", line);
}
}
}
gameinfo->handicap = handi;
gameinfo->to_move = (handi ? WHITE : BLACK);
}
