Files
WoWee/include/ui
Kelsi 973db16658 feat: add screen-space weather particle overlay (rain/snow/storm)
Weather type and intensity are already tracked from SMSG_WEATHER, but
only an icon was shown next to the zone name.  This adds a fullscreen
ImDrawList overlay that renders:
- Rain (type 1): diagonal rain streaks proportional to intensity
- Snow (type 2): gently swaying snowflakes with two-tone highlight
- Storm (type 3): heavy rain + dark fog-vignette on screen edges

Particles wrap at screen boundaries and are re-seeded on type or
resolution change.  Delta time is capped at 50 ms to prevent teleporting
after focus loss.  No heap allocations at runtime (static local arrays).
2026-03-17 16:34:39 -07:00
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