you can only time the round trip, and one average hides the worst of it
core
Networking
Keeping multiplayer games responsive and in agreement across slow connections.
8 cheat sheets in 3 groups
Fundamentals
Latency, jitter and loss: what the network does to packets.
Netcode
Prediction, interpolation and rollback for real-time play.
move now, let the server correct you later
common
keep guessing from the last state, and only speak up when the guess goes wrong
common
send only inputs, and let no one move until everyone has them
advanced
rewind the server to what the shooter saw, test the shot, come back
advanced
guess the other player, then rewrite the past when you were wrong
advanced
draw other players slightly in the past, between two known states
common
Scaling
Sending each player only what they need to know.
send each client only what is near it
common
