[lousken]

Why hasn't valve poured a billion or two on fixing this concept and implementing it?

[charcircuit]

>Release Notes for 5/26/2015

>– Added trace-based visibility checks to prevent networking invisible enemy players.

https://blog.counter-strike.net/2015/05/11988

[jamesfinlayson]

That's for Counter-Strike: Global Offensive - different engine.

[charcircuit]

They are forks of the same engine. Presumably this was ported as part of the CS2 update to CSGO.

[jamesfinlayson]

Not sure - one of the other comments said it wasn't because Source uses BSP and Source 2 uses meshes.