CRecipientFilter:RemoveAllPlayers
Example
Adds all players that can see the origin of the map, removes all players, then adds the first player object to the recipient filter, and sends them a message.
function SendMessage()
local filter = RecipientFilter()
filter:AddPVS(Vector(0,0,0))
filter:RemoveAllPlayers()
filter:AddPlayer(Entity(1))
umsg.Start("message",filter)
umsg.End()
end
Output: Sends a usermessage to the first player object, if it exists.