diff options
| author | Vito Caputo <vcaputo@pengaru.com> | 2022-07-20 21:06:31 -0700 |
|---|---|---|
| committer | Vito Caputo <vcaputo@pengaru.com> | 2022-07-20 21:06:31 -0700 |
| commit | b38db01c835fa222aa11ace3a2d84095fe2c3f83 (patch) | |
| tree | 18464eac0c46a1e8a82f96faadc370066d8bf61c /src/modules/sparkler/particle.h | |
| parent | b68ec04f86f83ba3d7926ffafc1d8a6456e72c05 (diff) | |
modules/sparkler: s/rand/rand_r/ and wire up seed
This is a little contorted but not too bad. The input to
particles_new() is just a const conf struct, so instead of
passing in the seed value for particles_t to contain, a pointer
to where the seed lives is passed in via the conf. This requires
the caller to persist a seed somewhere outside the particles
instance, but at least in rototiller we already have that
conveniently in til_module_context_t.
Diffstat (limited to 'src/modules/sparkler/particle.h')
| -rw-r--r-- | src/modules/sparkler/particle.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/modules/sparkler/particle.h b/src/modules/sparkler/particle.h index 6a5bf73..a7c4138 100644 --- a/src/modules/sparkler/particle.h +++ b/src/modules/sparkler/particle.h @@ -43,7 +43,7 @@ struct particle_t { //#define rand_within_range(_min, _max) ((rand() % (_max - _min)) + _min) // the style of random number generator used by c libraries has less entropy in the lower bits meaning one shouldn't just use modulo, while this is slower, the results do seem a little different. -#define rand_within_range(_min, _max) (int)(((float)_min) + ((float)rand() / (float)RAND_MAX) * (_max - _min)) +#define rand_within_range(_seedp, _min, _max) (int)(((float)_min) + ((float)rand_r(_seedp) / (float)RAND_MAX) * (_max - _min)) #define INHERIT_OPS NULL #define INHERIT_PROPS NULL |