Two regressions from the pre-collapse (712f17f), found by live gate + a runtime
probe:
1) Login-into-dungeon stopped loading the dungeon. The login-hold streaming
observer fell through to the OFFLINE fly-camera branch once
_lastLivePlayerLandblockId was filtered to the player guid (a dungeon-local
NPC used to keep it pinned). A camera-derived observer far from the
pre-collapsed dungeon tripped ExitDungeonExpand and unloaded it. Fix: a LIVE
in-world session never uses the fly camera for the observer — it follows the
player's server landblock, falling back to the recentered spawn center
(_liveCenterX/Y). The fly camera is the OFFLINE observer only.
2) Even with the dungeon resident, auto-entry hung: the #106 "ground ready" gate
required SampleTerrainZ under the spawn, but a dungeon's negative-offset cells
place the spawn's WORLD position in a NEIGHBOUR terrain landblock the #135
collapse deliberately doesn't load (probe: cellReady=True, terrReady=False
forever). The terrain gate is wrong for an indoor spawn — the player lands on
the EnvCell FLOOR. Fix: gate an indoor (hydratable) spawn/teleport on
IsSpawnCellReady, not the terrain heightmap; outdoor (and unhydratable→demote)
spawns still hold on terrain. Applied to both isSpawnGroundReady (login auto-
entry) and TeleportArrivalReadiness (teleport). This is the faithful equivalent
of retail's synchronous cell load + place-on-floor; the pre-#135 terrain hold
only passed because the 25x25 window streamed the neighbour terrain.
Verified live: login into 0x0007 → auto-entered player mode, snapped to
0x00070145, dungeon renders, FPS steady. Register AD-2 amended.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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