0005763: Reproducible and deterministic gameplay

ID	Project	Category	View Status	Date Submitted	Last Update

0005763	The Dark Mod	Coding	public	25.09.2021 03:53	25.09.2021 04:21

Reporter	stgatilov	Assigned To	stgatilov
Priority	low	Severity	feature	Reproducibility	N/A
Status	assigned	Resolution	open
Product Version	TDM 2.09

Summary	0005763: Reproducible and deterministic gameplay
Description	I wonder if it is possible to make game fully deterministic depending on starting randseed and user input. This would allow us to reproduce gameplay bugs recorded on player's machine. The main goal is to make CMD demo replay exactly the same way as it was recorded. Making it reproducible across machines and platforms is stretch goal of course. Right now major differences in player positions quickly lead to missing platforms and crates, so CMD demo becomes useless. There is much cleaning to do, and much stuff to research...
Tags	No tags attached.

stgatilov 25.09.2021 04:21 administrator ~0014369	Committed some random generation fixes I collected in the past: r9597. idPhysics_Player::ShoulderingMove: use gameplay random to determine sound duration. r9598. Use gameplay random for choosing click sounds on lockpick. r9599. Use gameplay random for load screen random value. r9600. Use gameplay random to seed SEED. r9601. Do not generate several random values during function parameters evaluation. r9602. When producing rotation hack warning, use idRandom with time-based seed. As far as I remember, CMD demos were still not deterministic.

Date Modified	Username	Field	Change
25.09.2021 03:53	stgatilov	New Issue
25.09.2021 03:53	stgatilov	Status	new => assigned
25.09.2021 03:53	stgatilov	Assigned To	=> stgatilov
25.09.2021 04:21	stgatilov	Note Added: 0014369