modernuo/Projects/Server/Network/Packets
Kamron Batman a8acfa31f8
refactor: decompose mobile/corpse hair, delete VirtualHairInfo, fix removal serial (#2462) (#2463)
Fixes #2462

## Summary
Removes the per-object `VirtualHairInfo` heap wrapper for mobile/corpse hair. Hair is now stored **inline** on `Mobile` and `Corpse` as `int _hairItemId` / `int _hairHue` plus a lazily-allocated, **non-serialized** ephemeral `Serial _hairSerial` (in the high virtual-serial range) — and likewise for facial hair. The `VirtualHairInfo` class is deleted, with a **lossless** save migration.

This delivers three things:
1. **Fixes a hair-removal bug.** `Delta(MobileDelta.Hair)` is deferred (it enqueues; `ProcessDeltaQueue` runs later in the tick). The old `HairItemID = 0` setter nulled `_hair` *immediately*, so by the time `ProcessDelta` built the remove packet the equipped virtual serial was already gone — the old `??=` code then re-materialized a **fresh** serial (≠ the equipped one), so clients never removed the right entity, and it left a phantom ItemId-0 object behind. The serial now lives on the entity and **persists across removal**, so remove packets carry the correct serial.
2. **Lightens the entity.** No heap hair object; bald mobiles allocate nothing (the serial is minted lazily only when hair is present). This was the original reason `HairItemID`/`HairHue` exist.
3. **Removes `VirtualHairInfo` entirely**, keeping the high-range virtual serial behavior.

## How
- **Mobile** (manual serialization): inline `_hairItemId/_hairHue/_hairSerial` (+facial); lazy `HairSerial`/`FacialHairSerial`; `ProcessDelta` reads those. Serialization **v36 → v37** — the v30-v37 deserialize is unified, reading the legacy per-hair `VirtualHairInfo` version int only when `version < 37`. Setting item id to 0 clears the hue (matching the old object-nulling) while retaining the serial.
- **Corpse** (codegen serialization): decomposed to `[SerializableField] int _hairItemId/_hairHue` (+facial) + ephemeral serial; **v16 → v17** with `MigrateFrom(V16Content)`.
- **Lossless migration:** the loader validates exact byte length, and the old corpse hair is a presence-bool-gated block, so a tiny **migration-only** `LegacyHairInfo` reader (no runtime role) consumes the legacy `[bool][int ver][int itemId][int hue]` bytes. Frozen `Corpse.v14/v15/v16.json` are retyped to it; `v17.json` describes the new int fields.
- All consumers updated to discrete accessors: `OutgoingMobilePackets`, `CorpsePackets`, corpse subclasses (`MilitiaFighterCorpse`, `SchmendrickApprenticeCorpse`), and the packet test mirrors.
- `VirtualHair.cs` renamed to `OutgoingVirtualHairPackets.cs` (the only type left in it after `VirtualHairInfo` was removed).

## Test Plan
- [x] Full solution build: **0 warnings, 0 errors** (`TreatWarningsAsErrors`).
- [x] `Server.Tests`: **708 passed** (incl. new `RemoveHairUsesEquippedSerial` / `RemoveFacialHairUsesEquippedSerial` proving the serial survives removal + hue clears).
- [x] `UOContent.Tests` corpse/hair: **6 passed** (incl. `CorpseHairMigrationTests` asserting the legacy hair bytes are consumed exactly — the loader's length invariant).
- [x] Generated migration code inspected: V14/V15/V16 readers consume the legacy block byte-for-byte; serial never written to disk.

## Upgrade notes
- Old Mobile (v30–v36) and Corpse (v13–v16) saves load losslessly.
- Minor cosmetic-only change: `SchmendrickApprenticeCorpse` hair/facial-hair RNG draws shift order within each pair (same draw count); irrelevant for a quest NPC corpse.
2026-06-06 14:33:28 -07:00
..
IBroadcastFilter.cs perf: Zero-alloc interpolation for SendMessage/Overhead APIs (#2434) 2026-05-03 18:04:02 -07:00
IncomingPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingAccountPackets.cs feat: Adds robust speed hack detection and movement throttling (#2266) 2026-03-07 11:44:37 -08:00
OutgoingCombatPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingContainerPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingDamagePackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingEffectPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingEntityPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingEquipmentPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingItemPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingLightPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingMapPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingMenuPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingMessagePackets.Broadcast.cs perf: Zero-alloc interpolation for SendMessage/Overhead APIs (#2434) 2026-05-03 18:04:02 -07:00
OutgoingMessagePackets.cs perf: Zero-alloc interpolation for SendMessage/Overhead APIs (#2434) 2026-05-03 18:04:02 -07:00
OutgoingMessagePackets.Interpolated.cs perf: Zero-alloc interpolation for SendMessage/Overhead APIs (#2434) 2026-05-03 18:04:02 -07:00
OutgoingMobilePackets.cs refactor: decompose mobile/corpse hair, delete VirtualHairInfo, fix removal serial (#2462) (#2463) 2026-06-06 14:33:28 -07:00
OutgoingMovementPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingPackets.cs feat: Upgrades networking to use io_uring. (#2315) 2026-02-01 16:02:32 -08:00
OutgoingPlayerPackets.cs perf: Migrate Old Guild System gumps to DynamicGump (#2420) 2026-04-26 10:44:11 -07:00
OutgoingSecureTradePackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingTargetPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingVendorBuyPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
OutgoingVendorSellPackets.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00
PacketContainerBuilder.cs fix: Bumps deps. Updates copyrights (#2353) 2026-03-05 19:36:54 -08:00