Improved some movement issues thanks to luj1's comments on RPG Codex. Sprites weren't updating their depth fast enough when moving north/south, so the overlap looked weird (fixed now). Also, drinking potions snapped the character back to closest tile (because of the empty bottle), which is now also fixed.
Greatly improved collision detection for large monsters. They were not very common before Ch.6 so I didn't notice them squeezing through small doorways. There was another bug that prevented targeting large monsters with combat abilities from the north (also fixed).
Also, the Minor Flame spell did not have sound effects.
You can see all the above bugs in the video below if you look carefully. They are all fixed now, plus some other issues (see below), but I'm too lazy to make a new video.
Complete list of changes:
-Greatly improved collision detection for large moving monsters.
-Fixed bug where you couldn't target mobiles with large collision sizes from the north with combat abilities.
-Fixed bug where drinking potions would snap mobiles to center of tile (thanks to luj1 on RPG Codex).
-Fixed bug from recent patch where special missile sprites for magic spells all looked like arrows.
-Improved updating sprite depth when moving north and south (thanks to luj1 on RPG Codex).
-Updated acid and heat resistances for wooden and reinforced objects (25% and 50%).
-Updated clock script to match Ch.6 hours (days are much shorter).
-Added sound effects for Minor Flame and Raging Inferno spells.