public override GGPOErrorCode Idle(int timeout)
{
if (sync.InRollback)
{
return(GGPOErrorCode.OK);
}
poll.Pump(0);
PollUdpProtocolEvents();
if (isSynchronizing)
{
return(GGPOErrorCode.OK);
}
sync.CheckSimulation(timeout);
// notify all of our endpoints of their local frame number for their
// next connection quality report
for (int i = 0; i < numPlayers; i++)
{
endpoints[i].SetLocalFrameNumber(sync.FrameCount);
}
int lastConfirmedFrame;
if (numPlayers <= 2)
{
lastConfirmedFrame = Poll2Players(sync.FrameCount);
}
else
{
lastConfirmedFrame = PollNPlayers(sync.FrameCount);
}
Log($"last confirmed frame in p2p backend is {lastConfirmedFrame}.");
if (lastConfirmedFrame >= 0)
{
Debug.Assert(lastConfirmedFrame != int.MaxValue);
if (numSpectators > 0)
{
while (nextSpectatorFrame <= lastConfirmedFrame)
{
Log($"pushing frame {nextSpectatorFrame} to spectators.");
var input = new GameInput
{
frame = nextSpectatorFrame,
size = (uint)(inputSize * numPlayers),
};
sync.GetConfirmedInputs(input.bits, nextSpectatorFrame);
for (int i = 0; i < numSpectators; i++)
{
spectators[i].SendInput(ref input);
}
nextSpectatorFrame++;
}
}
Log($"setting confirmed frame in sync to {lastConfirmedFrame}.");
sync.SetLastConfirmedFrame(lastConfirmedFrame);
}
// Send timesync notifications if now is the proper time
if (sync.FrameCount > nextRecommendedSleep)
{
int interval = 0;
for (int i = 0; i < numPlayers; i++)
{
interval = Math.Max(interval, endpoints[i].RecommendFrameDelay());
}
if (interval > 0)
{
callbacks.OnTimeSync(interval);
nextRecommendedSleep = sync.FrameCount + RecommendationInterval;
}
}
// TODO: What does this do?
if (timeout > 0)
{
Thread.Sleep(1);
}
return(GGPOErrorCode.OK);
}