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Arrange that random seeds are as harmonised as they can reasonably

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be between interactive and batch use.

[originally from svn r5896]
This commit is contained in:
Simon Tatham
2005-06-01 12:46:27 +00:00
parent b8197684f3
commit ad3abd9867
1 changed files with 14 additions and 2 deletions
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16
mines.c
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@ -2041,12 +2041,24 @@ static char *new_mine_layout(int w, int h, int n, int x, int y, int unique,
static char *new_game_desc(game_params *params, random_state *rs,
game_aux_info **aux, int interactive)
{
/*
* We generate the coordinates of an initial click even if they
* aren't actually used. This has the effect of harmonising the
* random number usage between interactive and batch use: if
* you use `mines --generate' with an explicit random seed, you
* should get exactly the same results as if you type the same
* random seed into the interactive game and click in the same
* initial location. (Of course you won't get the same grid if
* you click in a _different_ initial location, but there's
* nothing to be done about that.)
*/
int x = random_upto(rs, params->w);
int y = random_upto(rs, params->h);
if (!interactive) {
/*
* For batch-generated grids, pre-open one square.
*/
int x = random_upto(rs, params->w);
int y = random_upto(rs, params->h);
signed char *grid;
char *desc;