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Validate the number of pegs and holes in a Pegs game ID

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Without this, "1:O" causes an assertion violation, '!"new_ui found
nowhere for cursor"'.  We may as well require two pegs and one hole,
since that's the minimum for a game in which there are any moves to
make.
This commit is contained in:
Ben Harris
2023-01-28 23:45:48 +00:00
parent 75e8a1a9ca
commit 4359f59dd2
1 changed files with 10 additions and 1 deletions
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11
pegs.c
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@ -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;
}