Add CheckTransmit function

[darkerz7]

Add a function that allows you to hide certain entities from the player. ex. playerpawn.Transmit(entity)/playerpawn.Retransmit(entity)

[xen-000]

Blocking entities from transmit is bound to break sometimes and/or cause unwanted effects visible to clients. In addition, there's still a rare chance of the client erroring out with CopyExistingEntity: missing client entity when an entity is unblocked from transmitting, so maybe that should be fixed first.

[darkerz7]

Let them fix it when introducing this function into the cs_script

[girlglock]

Let them fix it when introducing this function into the cs_script

a better idea would be to add a sophisticated realm system like apex legends and titanfall has in their VScript api.
it has 32 realms where you are able to add entities to them

e = some prop or player

e.RemoveFromAllRealms() // removes them from all transmitable realms
e.AddToRealm(1) // adds them to realm 1

you are also able to add an entity to multiple realms at once

this is mainly utilized by the retail game for character abilities like wraiths phase walk (player slips into another dimension where they can only see players that did the same for some amount of time) or custom gamemodes like the 1v1 mode where unlike cs that needs multiple physical arenas for players fighting in them, it puts pairs of players into realms and lets them fight in the same space as the players from other realms

all that is probably very difficult to implement and has probably not many use cases