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Fixes for UDP p2p packets handling in frontend input buffer.

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genxium
2023-02-01 17:43:15 +08:00
parent 851678e2f3
commit 1d138b17c3
6 changed files with 40 additions and 22 deletions
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7
battle_srv/models/room.go
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@@ -825,6 +825,7 @@ func (pR *Room) OnDismissed() {
dilutedServerFps := float64(58.0) // Don't set this value too small, otherwise we might miss force confirmation needs for slow tickers!
pR.dilutedRollbackEstimatedDtNanos = int64(float64(pR.RollbackEstimatedDtNanos) * float64(serverFps) / dilutedServerFps)
pR.BattleDurationFrames = int32(60 * serverFps)
//pR.BattleDurationFrames = int32(20 * serverFps)
pR.BattleDurationNanos = int64(pR.BattleDurationFrames) * (pR.RollbackEstimatedDtNanos + 1)
pR.InputFrameUpsyncDelayTolerance = battle.ConvertToNoDelayInputFrameId(pR.NstDelayFrames) - 1 // this value should be strictly smaller than (NstDelayFrames >> InputScaleFrames), otherwise "type#1 forceConfirmation" might become a lag avalanche
pR.MaxChasingRenderFramesPerUpdate = 9 // Don't set this value too high to avoid exhausting frontend CPU within a single frame, roughly as the "turn-around frames to recover" is empirically OK
@@ -1187,11 +1188,11 @@ func (pR *Room) markConfirmationIfApplicable(inputFrameUpsyncBatch []*pb.InputFr
if false == fromUDP {
/*
[WARNING] We have to distinguish whether or not the incoming batch is from UDP here, otherwise "pR.LatestPlayerUpsyncedInputFrameId - pR.LastAllConfirmedInputFrameId" might become unexpectedly large in case of "UDP packet loss + slow ws session"!
[WARNING] We have to distinguish whether or not the incoming batch is from UDP here, otherwise "pR.LatestPlayerUpsyncedInputFrameId - pR.LastAllConfirmedInputFrameId" might become unexpectedly large in case of "UDP packet loss + slow ws session"!
Moreover, only ws session upsyncs should advance "player.LastReceivedInputFrameId" & "pR.LatestPlayerUpsyncedInputFrameId".
Moreover, only ws session upsyncs should advance "player.LastReceivedInputFrameId" & "pR.LatestPlayerUpsyncedInputFrameId".
Kindly note that the updates of "player.LastReceivedInputFrameId" could be discrete before and after reconnection.
Kindly note that the updates of "player.LastReceivedInputFrameId" could be discrete before and after reconnection.
*/
player.LastReceivedInputFrameId = clientInputFrameId
if clientInputFrameId > pR.LatestPlayerUpsyncedInputFrameId {