Ports retail's AdminEnvirons (opcode 0xEA60) — the client-visible
weather-event channel distinct from the PlayScript path. Wire format
(chunk_006A0000.c: `[u32 opcode][u32 environChangeType]`).
EnvironChangeType range:
0x00..0x06 — fog presets (Clear/Red/Blue/White/Green/Black/Black2)
0x65..0x75 — one-shot ambient sounds (Roar, Bell, Chant, etc)
0x76..0x7B — Thunder1..6 sounds (paired with a lightning PlayScript)
Dispatch:
- WorldSession decodes the packet, fires EnvironChanged event.
- GameWindow.OnEnvironChanged:
* Fog values (0x00..0x06) → WeatherSystem.Override. The enum
values line up byte-for-byte with our EnvironOverride enum
(deliberately mirrored from retail), so a direct cast works.
* Sound values (0x65..0x7B) → console log with retail name for
now. Actual OpenAL playback needs a EnvironChangeType →
WaveData lookup (indexed via SoundTable dat), which is a
separate follow-up. The event still fires so any future
audio subscriber can plug in.
Combined with Phase 6a-6c PhysicsScript/PlayScript wiring, the
complete retail lightning pipeline is now:
server sends PlayScript(0xF754, lightningGuid, scriptId=0x33xxxxxx)
→ runs the flash script via PhysicsScriptRunner
→ CreateParticleHook spawns the flash particles
server sends AdminEnvirons(0xEA60, Thunder3Sound=0x78)
→ OnEnvironChanged logs; audio binding TBD
Whether the user's ACE sends these packets depends on the server
(ACE 2.x vanilla does NOT — Agent #5 verified no lightning opcodes in
the default emit path). With the client port complete, any ACE mod
or extension that emits the right packets will Just Work in acdream.
Build + 742 tests green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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