public void BeginSimulation(uint tick)
{
lastIndex = MomentumIndexForTick(tick);
if (!lastIndex.valid)
{
lastIndex = TrailIndex.zero;
}
if (currentIndex != lastIndex)
{
ClearContacts();
ApplyMomentum(this[lastIndex]);
}
if (lastIndex.segment < momentums.Count - 1)
{
momentums.RemoveRange(
lastIndex.segment + 1,
momentums.Count - (lastIndex.segment + 1));
}
int nextMomI = lastIndex.momentum + 1;
while (nextMomI < momentums[lastIndex.segment].Length &&
momentums[lastIndex.segment][nextMomI] != null)
{
Momentum2D.Release(momentums[lastIndex.segment][nextMomI++]);
momentums[lastIndex.segment][nextMomI++] = null;
}
}
public bool GoToTime(uint tick, uint keepTick = 0)
{
TrailIndex i = MomentumIndexForTick(tick);
bool success = GoToIndex(i);
uint pastTick = Math.Max(tick - keepTick, 0);
int pastSegI = 0;
while (pastSegI + 1 <= i.segment &&
momentums[pastSegI + 1][0].tick <= pastTick)
{
pastSegI++;
}
if (pastSegI > 0)
{
currentIndex = new TrailIndex(
currentIndex.segment - pastSegI,
currentIndex.momentum
);
lastIndex = new TrailIndex(
lastIndex.segment - pastSegI,
lastIndex.momentum
);
if (!Momentum2D.IsPoolFull())
{
for (int segI = 0; segI < pastSegI; segI++)
{
Momentum2D.Release(momentums[segI]);
if (Momentum2D.IsPoolFull())
{
break;
}
}
}
momentums.RemoveRange(0, pastSegI);
}
return(success);
}