diff options
| -rw-r--r-- | pegs.c | 11 |
1 files changed, 10 insertions, 1 deletions
@@ -663,7 +663,7 @@ static char *new_game_desc(const game_params *params, random_state *rs, static const char *validate_desc(const game_params *params, const char *desc) { - int len; + int len, i, npeg = 0, nhole = 0; len = params->w * params->h; @@ -671,6 +671,15 @@ static const char *validate_desc(const game_params *params, const char *desc) return "Game description is wrong length"; if (len != strspn(desc, "PHO")) return "Invalid character in game description"; + for (i = 0; i < len; i++) { + npeg += desc[i] == 'P'; + nhole += desc[i] == 'H'; + } + /* The minimal soluble game has two pegs and a hole: "3x1:PPH". */ + if (npeg < 2) + return "Too few pegs in game description"; + if (nhole < 1) + return "Too few holes in game description"; return NULL; } |