[BUG] GSC - Headbutt Pokemon identified as illegal due to location

[theSLAYER]

@Kaphotics I understand this isn't high priority, but I'm reporting it so that you're aware
The Heracross that I caught in-game was flagged as Illegal on GSC
(flag doesn't show in other gens; I understand this is due to the location data not being stored/transferred up).

I used this website to find the headbutt tree for Crystal, and indeed I encountered it there.

214 - HERACROSS - BE2B.pk2

[Kaphotics]

PKHeX stores tree coordinates for each location id in two groups, valid (interactable) and invalid (can't interact). Maybe that tree was incorrectly classified as invalid.

Would have to analyze the tree data...

[theSLAYER]

2 hours ago, Kaphotics said:

PKHeX stores tree coordinates for each location id in two groups, valid (interactable) and invalid (can't interact). Maybe that tree was incorrectly classified as invalid.

Would have to analyze the tree data...

Would it be easier to simply record what Headbuttable Index is available on every map?
I've just cleaned up the maps, and can note down every Tree Index legitimately available. (ignoring cheats such as WTW)

edit: I got the indexes here: https://projectpokemon.org/docs/other/generation-2-headbutt-mechanics-r100/

[Kaphotics]

PKHeX has that in digital form, would just need to unpack and spit out a parse of coordinates for each location. Am preoccupied atm

[Kaphotics]

@theSLAYER : it appears PKHeX doesn't have any tree data for this location.

I dumped the coordinate data for all maps, here's the output:

https://pastebin.com/raw/grW4ezD0

Can you sanity check some other locations? If all is good, let me know what it's missing (Route 42 and anything else).