Add new CVar sv_usercmd_custom_random_seed

[SergeyShorokhov]

CVar	Def. value	Description
sv_usercmd_custom_random_seed	0	When enabled server will populate an additional random seed independent of the client.

Ported from CS:GO leaked source code

Thanks to danil.nesvetaev for the reminder of this functionality in CS:GO. 👍

Video description:
https://youtu.be/xyG8XYBsBTY

[metita]

Is there any reason for this change to be implemented? AFAIK having this cvar on 1 will just make the visual bullet landing worse, so...?

EDIT: Just investigated and having this on 1 will make no-recoil/no-spread hacks to not work right?

[WPMGPRoSToTeMa]

@metita no-recoil will still work.

[metita]

@metita no-recoil will still work.

Any pro / cons on this then?

[WPMGPRoSToTeMa]

Any pro / cons on this then?

@metita pros: no-spread will not work. Cons: client-side and server-side gunshot positions are different. E.g. you hit a player on the client-side, but a wall on the server-side (so no decals on the client-side) or vice versa. Or just different positions on a wall.

[afwn90cj93201nixr2e1re]

73M, 707 n4P3Hb 35/I1 ch70 n3P3nP0D437 ch00}|{13 P4607bl.
-)70 74K, K 5/I0800.
(Слову)

Да оффтоп, но не переведут.