0011825: Raising Dead during large combat causes 10-60 minute lag - Dwarf Fortress Bug Tracker

ID	Project	Category	View Status	Date Submitted	Last Update

0011825	Dwarf Fortress	Adventure Mode -- Combat	public	2021-11-27 15:04	2021-11-27 15:04

Reporter	brubsby	Assigned To
Priority	normal	Severity	major	Reproducibility	always
Status	new	Resolution	open
Product Version	0.47.05

Summary	0011825: Raising Dead during large combat causes 10-60 minute lag
Description	I have an adventurer who is a necromancer trying to rule the world, and whenever I fight large amounts of npcs with my undead horde (e.g. sieging a city's keep), the game slows to a crawl between combat steps, which is annoying but tenable. HOWEVER, when I raise dead in the middle of said combat (say 0000048:0000050 undead, some re-raised and some newer victims) the game halts for 10-60 minutes on the move after the raise dead, and before any time steps occur visually. The game goes unresponsive and seemingly crashes, but without fail will come become responsive again if I let it sit long enough.
Steps To Reproduce	1. Adventure mode 2. Become necromancer 3. Bring 50-100 undead to a large dense population of non-undead npcs 4. Let them fight until a large number/all the undead have been struck down and a large amount of npcs remain 5. Raise dead on all the parts/bodies you can see 6. Do any move that causes time to progress
Additional Information	I've also noticed when adventure mode undead are struck down and re-raised, the companion count sometimes goes up, and many undead parts/bodies will be on the companion list twice, which might be related to the problem. I'm sure lots of things are being recalculated when npcs spot new entities and when new entities get added to the simulation, and this problem feels like an exponential or quadratic scaling performance issue with number of entities
Tags	No tags attached.

Date Modified	Username	Field	Change
2021-11-27 15:04	brubsby	New Issue