`UnitState::position` was fed from a streamed object's `Transform` read raw, and a
`Transform` is Bevy's frame (`wow_to_bevy` is `(-y, z, -x)`): the two map axes arrived
swapped and negated and the third was the player's height. Three compat verbs answer
from that field — SuperWoW's `UnitPosition`, UnitXP_SP3's `getUnitPosition`, and
`C_Map.GetPlayerMapPosition` — while 1.12's own `GetPlayerMapPosition` reads the
per-frame world-map feed, which converts. So the client sat in a state no real client
can be in: the 1.12 verb placing the arrow and the modern verb saying the player was on
no map at all.
Against a zone's few-thousand-yard rect the height lands outside 0..1, so the modern
verb answered nil — which is OpenMapClassic's "You aren't on the world map here" and
`Map/StockArrow.lua` declining to place anything, leaving 1.12's wrong placement
standing. Against a continent's sixteen thousand it lands inside, and answers a
plausible wrong fraction. Both of grom's reports, one cause. Distance was the one read
this never broke, the transform being rigid.
Measured in a capture with the player at Northshire: `UnitPosition` now answers
(-8980, -160, 110), `C_Map.GetPlayerMapPosition(1415)` and the 1.12 verb agree to seven
places, Elwynn answers a fraction and Dun Morogh correctly answers nil; and with the
view centred on the player's own world point the arrow lands on the container's centre
to a third of a pixel.
A capture could not have shown any of this — its synthetic player carried no position,
so every reader answered nil there. `demo_unit_feed` now publishes the capture's own
parking spot, at the cost of one ambiguous pair written up at the ceiling.
Also here, from the same play test:
* A canvas zoom now tells the two 1.12 frames their scale moved, with their own scale,
which is the only way a 1.12 map addon can hear it. pfQuest counter-scales its pins
inside that hook; the canvas scales its child, so the hook never fired and the pins
kept the size they were built at. Measured 0 -> 24 `pfMap.ResizeNodes` over one
glide from 8x to 30x.
* `CLASSIC_API_VERSION` says 1.18.0, at grom's ask. The DLL beside the real client
reads 1.15.0.0 and nothing in his folder gates above pfUI's 11400 nag threshold, so
the trade is the one that constant has always named and the floor is unchanged.
The addon-side half is in `Addon_Ports/openmap_port`: `unexploredMode` defaults to
`reveal`, with the one-shot migration this addon already uses for the kind. A 1.12 zone
sheet is blank parchment and every scrap of terrain is an overlay the client hands out
only where explored, while a city sheet has no overlays at all — which is the whole of
"it will only paint the actual map art for cities".
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SgstFWtn1RxEJ5kVrpgYwn
gromandClaude Opus 5
841fd1a81f