Cataclysm-dda: Felling trees inappropriately creates dirt squares

[pescepalla]

Describe the bug

Logs from a felled tree create dirt squares under themselves inappropriately overwriting other types of terrain. For instance, a tree growing on top of a LMOE shelter can fall on top of stairs and other trees creating dirt squares.

Steps To Reproduce

1. Find an LMOE shelter or other raised structure with a tree on top
2. Fell the tree so that it falls on stairs/other trees
3. Chop the resulting logs and notice that dirt squares remain

Expected behavior

A felled tree should not change terrain under itself, especially not create walkable terrain.

Screenshots

Versions and configuration

• OS: Arch Linux
• Game Version: O.E-2
• Graphics version: Tiles
• Ingame language: English
• Mods loaded: Disable NPC Needs, No Rail Stations, sees-player icon (retrodays), Bionic slots, Alternative map keys

[RafeHaab]

Then how am I supposed to break metal walls now?

[nexusmrsep]

Perhaps t_trunk should be migrated to f_trunk?

[Duck13Tales]

It is really nice that the trees break everything wherever they fall, but sure it shouldn't change the type of the floor.