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Make Prediction lerping less pick + debug

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- Lerping uses int rather than fixed/float comparisons
- Added debug information
This commit is contained in:
Edward Richardson 2014-11-02 17:58:59 +13:00
parent 31611c17d5
commit 043b28f4ba
1 changed files with 34 additions and 15 deletions
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49
src/p_user.cpp
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@ -78,7 +78,9 @@ CUSTOM_CVAR(Float, cl_predict_lerpthreshold, 2.00f, CVAR_ARCHIVE | CVAR_GLOBALCO
struct PredictPos
{
int gametic;
FVector3 point;
fixed_t x;
fixed_t y;
fixed_t z;
fixed_t pitch;
fixed_t yaw;
} static PredictionLerpFrom, PredictionLerpResult, PredictionLast;
@ -2605,12 +2607,19 @@ void P_PredictionLerpReset()
PredictionLerptics = PredictionLast.gametic = PredictionLerpFrom.gametic = PredictionLerpResult.gametic = 0;
}
bool P_LerpCalculate(FVector3 from, FVector3 to, FVector3 &result, float scale)
bool P_LerpCalculate(PredictPos from, PredictPos to, PredictPos &result, float scale)
{
result = to - from;
result *= scale;
result = result + from;
FVector3 delta = result - to;
FVector3 vecFrom(FIXED2DBL(from.x), FIXED2DBL(from.y), FIXED2DBL(from.z));
FVector3 vecTo(FIXED2DBL(to.x), FIXED2DBL(to.y), FIXED2DBL(to.z));
FVector3 vecResult;
vecResult = vecTo - vecFrom;
vecResult *= scale;
vecResult = vecResult + vecFrom;
FVector3 delta = vecResult - vecTo;
result.x = FLOAT2FIXED(vecResult.X);
result.y = FLOAT2FIXED(vecResult.Y);
result.z = FLOAT2FIXED(vecResult.Z);
// As a fail safe, assume extrapolation is the threshold.
return (delta.LengthSquared() > cl_predict_lerpthreshold && scale <= 1.00f);
@ -2715,8 +2724,18 @@ void P_PredictPlayer (player_t *player)
if (CanLerp && PredictionLast.gametic > 0 && i == PredictionLast.gametic && !NoInterpolateOld)
{
// Z is not compared as lifts will alter this with no apparent change
DoLerp = (PredictionLast.point.X != FIXED2FLOAT(player->mo->x) ||
PredictionLast.point.Y != FIXED2FLOAT(player->mo->y));
// Make lerping less picky by only testing whole units
DoLerp = ((PredictionLast.x >> 16) != (player->mo->x >> 16) ||
(PredictionLast.y >> 16) != (player->mo->y >> 16));
// Aditional Debug information
if (developer && DoLerp)
{
DPrintf("Lerp! Ltic (%d) && Ptic (%d) | Lx (%d) && Px (%d) | Ly (%d) && Py (%d)\n",
PredictionLast.gametic, i,
(PredictionLast.x >> 16), (player->mo->x >> 16),
(PredictionLast.y >> 16), (player->mo->y >> 16));
}
}
}
@ -2733,19 +2752,19 @@ void P_PredictPlayer (player_t *player)
}
PredictionLast.gametic = maxtic - 1;
PredictionLast.point.X = FIXED2FLOAT(player->mo->x);
PredictionLast.point.Y = FIXED2FLOAT(player->mo->y);
PredictionLast.point.Z = FIXED2FLOAT(player->mo->z);
PredictionLast.x = player->mo->x;
PredictionLast.y = player->mo->y;
PredictionLast.z = player->mo->z;
if (PredictionLerptics > 0)
{
if (PredictionLerpFrom.gametic > 0 &&
P_LerpCalculate(PredictionLerpFrom.point, PredictionLast.point, PredictionLerpResult.point, (float)PredictionLerptics * cl_predict_lerpscale))
P_LerpCalculate(PredictionLerpFrom, PredictionLast, PredictionLerpResult, (float)PredictionLerptics * cl_predict_lerpscale))
{
PredictionLerptics++;
player->mo->x = FLOAT2FIXED(PredictionLerpResult.point.X);
player->mo->y = FLOAT2FIXED(PredictionLerpResult.point.Y);
player->mo->z = FLOAT2FIXED(PredictionLerpResult.point.Z);
player->mo->x = PredictionLerpResult.x;
player->mo->y = PredictionLerpResult.y;
player->mo->z = PredictionLerpResult.z;
}
else
{