Memory not connecting walls properly

[CoroNaut]

Describe the bug

Map memory would usually keep the same tile as what you saw, but in this case it seems that some tiles are changing between map memory and normal vision

Steps To Reproduce

Steps to reproduce the behavior:

1. Find natural occurrence of such a tile (probably best in lab in the same section as pictures)

Expected behavior

Map memory is a record of what normal vision sees

Screenshots

The only weird tiles are the ones below the character and right at the top with just a couple problem connections.

Picture showing walls below character are blocks instead of connected walls

Normal vision of the connected walls

Versions and configuration

• OS: Windows
  • OS Version: MINGW/CYGWIN/MSYS2 on unknown Windows version
• Game Version: 0.D-10922-gb1541cd [32-bit]
• Graphics Version: Tiles
• Mods loaded: [
  Dark Days Ahead [dda],
  No Fungal Monsters [No_Fungi],
  Disable Religious Texts [no_religious_Texts]
  ]

[Qrox]

The only reason I can think of is that map memory connection was not correctly calculated when memorizing the tiles, but I'm not able to reproduce it. Have you previously entered the bottom aisle? Were you there with low light level?

[kevingranade]

I think you're right, it memorizes the wall as drawn the first time you see it, but it doesn't get updated once you see the wall next to it that adjusts what tile is drawn there.

[Qrox]

Well, it always calculate the connection according to nearby tiles even if you can't see them, so I don't known why would the connection be wrong in the first place.

[kevingranade]

I'm pretty sure it doesn't, that would leak information.

[Qrox]

You're right, I didn't reproduce it because the tileset I was using doesn't have edges on the wall tiles, so it looked as if it calcuated connection according to nearby tiles.