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- add r_ticstability for a smoother experience playing mods with high think times

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This commit is contained in:
Magnus Norddahl 2019-04-17 16:07:32 +02:00
parent 89a11d1a9d
commit 5171f90e35
1 changed files with 47 additions and 0 deletions
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47
src/d_net.cpp
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@ -1802,7 +1802,46 @@ void D_QuitNetGame (void)
fclose (debugfile);
}
// Forces playsim processing time to be consistent across frames.
// This improves interpolation for frames in between tics.
//
// With this cvar off the mods with a high playsim processing time will appear
// less smooth as the measured time used for interpolation will vary.
CVAR(Bool, r_ticstability, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
static uint64_t stabilityticduration = 0;
static uint64_t stabilitystarttime = 0;
static void TicStabilityWait()
{
using namespace std::chrono;
using namespace std::this_thread;
if (!r_ticstability)
return;
uint64_t start = duration_cast<microseconds>(steady_clock::now().time_since_epoch()).count();
while (true)
{
uint64_t cur = duration_cast<microseconds>(steady_clock::now().time_since_epoch()).count();
if (cur - start > stabilityticduration)
break;
}
}
static void TicStabilityBegin()
{
using namespace std::chrono;
stabilitystarttime = duration_cast<microseconds>(steady_clock::now().time_since_epoch()).count();
}
static void TicStabilityEnd()
{
using namespace std::chrono;
uint64_t stabilityendtime = duration_cast<microseconds>(steady_clock::now().time_since_epoch()).count();
stabilityticduration = std::min(stabilityendtime - stabilitystarttime, (uint64_t)1'000'000);
}
//
// TryRunTics
@ -1872,6 +1911,8 @@ void TryRunTics (void)
// Uncapped framerate needs seprate checks
if (counts == 0 && !doWait)
{
TicStabilityWait();
// Check possible stall conditions
Net_CheckLastReceived(counts);
if (realtics >= 1)
@ -1939,6 +1980,7 @@ void TryRunTics (void)
P_UnPredictPlayer();
while (counts--)
{
TicStabilityBegin();
if (gametic > lowtic)
{
I_Error ("gametic>lowtic");
@ -1954,10 +1996,15 @@ void TryRunTics (void)
gametic++;
NetUpdate (); // check for new console commands
TicStabilityEnd();
}
P_PredictPlayer(&players[consoleplayer]);
S_UpdateSounds (players[consoleplayer].camera); // move positional sounds
}
else
{
TicStabilityWait();
}
}
void Net_CheckLastReceived (int counts)