diff options
| author | Vito Caputo <vcaputo@pengaru.com> | 2023-05-23 20:21:07 -0700 |
|---|---|---|
| committer | Vito Caputo <vcaputo@pengaru.com> | 2023-05-23 20:21:07 -0700 |
| commit | 49017136713f4cec7ed1dc5b6256988176616e9a (patch) | |
| tree | 4fc1deedefbe145f423ed7890e3ab5c621db85dc | |
| parent | a8d44af30a06f93a95884d67507b6ff2bc74e0a9 (diff) | |
modules/checkers: add seed to randomized pattern,dynamics
this oversight becomes apparent when stacking checkers as compose
layers w/random pattern and/or dynamics. The stacked instances
would identical pseudo-random behaviors for lack of seeding.
| -rw-r--r-- | src/modules/checkers/checkers.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/modules/checkers/checkers.c b/src/modules/checkers/checkers.c index 16156a4..cef00f6 100644 --- a/src/modules/checkers/checkers.c +++ b/src/modules/checkers/checkers.c @@ -282,7 +282,7 @@ static void checkers_render_fragment(til_module_context_t *context, til_stream_t break; } case CHECKERS_PATTERN_RANDOM: - state = hash(fragment->number * 0x61C88647) & 0x1; + state = hash((context->seed + fragment->number) * 0x61C88647) & 0x1; break; } @@ -304,7 +304,7 @@ static void checkers_render_fragment(til_module_context_t *context, til_stream_t state ^= ((unsigned)((float)ticks * ctxt->setup->rate) & 0x1); break; case CHECKERS_DYNAMICS_RANDOM: /* note: the big multiply here is just to get up out of the low bits */ - state &= hash(fragment->number * 0x61C88647 + (unsigned)((float)ticks * ctxt->setup->rate)) & 0x1; + state &= hash((context->seed + fragment->number) * 0x61C88647 + (unsigned)((float)ticks * ctxt->setup->rate)) & 0x1; break; } |