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Introduce routines in each game module to encode a set of game

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parameters as a string, and decode it again. This is used in
midend.c to prepend the game parameters to the game seed, so that
copying out of the Specific box is sufficient to completely specify
the game you were playing.
Throughout development of these games I have referred to `seed'
internally, and `game ID' externally. Now there's a measurable
difference between them! :-)

[originally from svn r4231]
This commit is contained in:
Simon Tatham
2004-05-19 11:57:09 +00:00
parent ba076fbdb2
commit 350683b253
8 changed files with 200 additions and 10 deletions
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40
midend.c
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@ -333,7 +333,7 @@ int midend_wants_statusbar(midend_data *me)
config_item *midend_get_config(midend_data *me, int which, char **wintitle)
{
char *titlebuf;
char *titlebuf, *parstr;
config_item *ret;
titlebuf = snewn(40 + strlen(game_name), char);
@ -352,7 +352,15 @@ config_item *midend_get_config(midend_data *me, int which, char **wintitle)
ret[0].type = C_STRING;
ret[0].name = "Game ID";
ret[0].ival = 0;
ret[0].sval = dupstr(me->seed);
/*
* The text going in here will be a string encoding of the
* parameters, plus a colon, plus the game seed. This is a
* full game ID.
*/
parstr = encode_params(me->params);
ret[0].sval = snewn(strlen(parstr) + strlen(me->seed) + 2, char);
sprintf(ret[0].sval, "%s:%s", parstr, me->seed);
sfree(parstr);
ret[1].type = C_END;
ret[1].name = ret[1].sval = NULL;
@ -367,7 +375,7 @@ config_item *midend_get_config(midend_data *me, int which, char **wintitle)
char *midend_set_config(midend_data *me, int which, config_item *cfg)
{
char *error;
char *error, *p;
game_params *params;
switch (which) {
@ -385,12 +393,34 @@ char *midend_set_config(midend_data *me, int which, config_item *cfg)
break;
case CFG_SEED:
error = validate_seed(me->params, cfg[0].sval);
/*
* The game ID will often (in fact, mostly) have a prefix
* containing a string-encoded parameter specification
* followed by a colon. So first find the colon, and then
* split the string up.
*/
p = strchr(cfg[0].sval, ':');
if (p) {
*p++ = '\0'; /* p now points to game seed */
params = decode_params(cfg[0].sval);
error = validate_params(params);
if (error) {
free_params(params);
return error;
}
free_params(me->params);
me->params = params;
} else
p = cfg[0].sval;
error = validate_seed(me->params, p);
if (error)
return error;
sfree(me->seed);
me->seed = dupstr(cfg[0].sval);
me->seed = dupstr(p);
me->fresh_seed = TRUE;
break;