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Add Mars surface atmosphere particels

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Thomas
2026-03-05 19:21:41 +00:00
parent 635869f226
commit 4407932a2d
4 changed files with 85 additions and 5 deletions
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TODO.md
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@@ -145,11 +145,15 @@ which defers a level load into MODE_PLAY on the next frame. Tears down the
current mode (editor or play), loads the selected `.lvl` file, and seeds
`s_edit_path` so pressing E opens the same level in the editor.
## Mars Surface atmosphere particles
Mars Surface levels should have ambient floating particles (dust motes, fine
sand) drifting across the screen to sell the atmosphere. Could tie into the
existing wind system — particles drift with the wind direction. Should be
subtle, low-alpha, and layered behind/in front of the player for depth.
## ~~Mars Surface atmosphere particles~~ ✓
Implemented: `particle_emit_atmosphere_dust()` emits ambient dust motes each
frame on Mars Surface levels (keyed on `PARALLAX_STYLE_MARS`). Three
sub-layers for depth: large slow "far" motes, small quick "near" specks,
and occasional interior spawns to prevent edge seams. All particles drift
with the wind system via `gravity_scale` — wind pushes them across the
viewport. Reddish-tan color palette with per-particle variation. Low drag,
long lifetimes (3-7 s), subtle alpha fade. ~2-3 particles/frame at 60 Hz,
well within the 1024-particle pool budget.
## Skip spacecraft transition for non-surface levels
The spacecraft fly-in animation should only play on surface levels (moon01,