public byte PrepGhostSecond(ushort entityid, ushort timestamp)
{
// if ``, can't possibly belong to this snapper
if (entityid >= SecondEntityIdToInnerId.Length)
{
return(0);
}
// if ``, this snapper doesn't have this entity
int innerid = SecondEntityIdToInnerId[entityid];
if (innerid == -1)
{
return(0);
}
SnapHistory <TSnap, TStatic> h = SecondData.Values[SecondData.IdsToIndices[innerid]];
TempWriteHistory = h;
TempWriteIndex = h.FindIndex(timestamp);
if (TempWriteIndex < 0)
{
return(0);
}
return(Packer.PrepPackFull(
h.Shots[TempWriteIndex], h.StaticData, out PackInfo));
}
private bool UnpackDelta(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
int innerid,
byte[] blob, int blobstart, int blobcount,
ushort timestamp, ushort basisTimestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Values[data.IdsToIndices[innerid]];
int index = sh.FindIndex(timestamp);
if (index < 0 || index >= sh.Shots.Length)
{
return(false); // out of bounds
}
int basisIndex = sh.FindIndex(basisTimestamp);
if (basisIndex < 0 || basisIndex >= sh.Shots.Length)
{
return(false); // out of bounds
}
Packer.UnpackDelta(ref sh.Shots[index], sh.Shots[basisIndex], blob, blobstart, blobcount);
sh.Timestamps[index] = timestamp;
sh.Flags[index] = SnapHistory <TSnap, TStatic> .FlagGold;
// handle flag rollover
Rollover(sh, index, timestamp);
return(true);
}
private bool UnpackDelta(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
int innerid,
byte[] blob, int blobstart, int blobcount,
ushort timestamp, ushort basisTimestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Values[data.IdsToIndices[innerid]];
int index = sh.FindIndex(timestamp);
if (index < 0 || index >= sh.Shots.Length)
{
return(false); // out of bounds
}
int basisIndex = sh.FindIndex(basisTimestamp);
if (basisIndex < 0 || basisIndex >= sh.Shots.Length)
{
return(false); // out of bounds
}
Packer.UnpackDelta(ref sh.Shots[index], sh.Shots[basisIndex], blob, blobstart, blobcount);
sh.Timestamps[index] = timestamp;
sh.Flags[index] = SnapHistory <TSnap, TStatic> .FlagGold;
// ask the server to resimulate from this timestamp
// to ensure our silver guesses get updated
NetSnapper.RequestResimulate(timestamp);
return(true);
}
public bool ServerAddEntitySecond(TSnap initalSnap, TStatic staticData, out ushort eid,
bool ghostAll = true)
{
if (!NetSnapper.ServerRequestEntitySecond(EntityType, out eid))
{
return(false); // NetSnapper says: no entity space available
}
if (SecondEntityIdToInnerId.Length <= eid)
{
ExpandSecondEntityIdMap(eid);
}
SnapHistory <TSnap, TStatic> h = SecondData.Request();
h.StaticData = staticData;
h.EntityId = eid;
h.Timestamps[0] = NetSnapper.CurrentTime;
h.Flags[0] = SnapHistory <TSnap, TStatic> .FlagGold;
h.LeadingIndex = 0;
h.Shots[0] = initalSnap;
SecondEntityIdToInnerId[eid] = h.PoolId;
if (ghostAll)
{
// ghost the new entity to all players
NetSnapper.ServerSendGhostAllSecond(eid, EntityType);
}
return(true);
}
public void ServerAdvance()
{
for (int d = 0; d < NentDatas.Length; d++)
{
ReArrayIdPool <SnapHistory <TSnap, TStatic> > data = NentDatas[d];
for (int i = 0; i < data.Count; i++)
{
SnapHistory <TSnap, TStatic> h = data.Values[i];
if (h.PrevFlag != SnapHistory <TSnap, TStatic> .FlagGold)
{
continue; // if the prevflag is not gold,
}
// the entity does not exist at this timestamp
// so we don't bother simulating it yet
// now we advance the snapshot forward to the current point in
// time, and then save it
h.Shots[h.CurrentIndex] = h.Shots[h.PrevIndex];
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.Shots[h.CurrentIndex], NetSnapper.TickMSTarget);
Nents.ServerSaveSimIntoCurrent(h);
}
}
}
private bool Deghost(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
int innerid, ushort timestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Values[data.IdsToIndices[innerid]];
int index = sh.FindIndex(timestamp);
if (index < 0 || index >= sh.Shots.Length)
{
return(false); // out of bounds
}
sh.Flags[index] = SnapHistory <TSnap, TStatic> .FlagDeghosted;
// scroll forward and deghost subsequent timestamps!
// what to do if deghost and ghost arrive out of order?
// simple: by only overwriting SILVER flags, we ensure that deghosting
// will not overwrite fresh / more recent data
int nindex = index + 1;
ushort nextTime = timestamp;
while (true)
{
if (nindex == sh.Shots.Length)
{
nindex = 0;
}
if (nextTime == ushort.MaxValue)
{
nextTime = 0;
}
else
{
nextTime++;
}
// we can only rollover onto silver flags
if (sh.Flags[nindex] != SnapHistory <TSnap, TStatic> .FlagSilver && sh.Flags[nindex] != SnapHistory <TSnap, TStatic> .FlagEmpty)
{
break;
}
// can only rollover onto subsequent timestamps
if (sh.Timestamps[nindex] != nextTime)
{
break;
}
// now we're ready to roll
sh.Flags[nindex] = SnapHistory <TSnap, TStatic> .FlagDeghosted;
nindex++;
}
return(true);
}
// Simulant Helpers
public void ServerSaveSimIntoCurrent(SnapHistory <TSnap, TStatic> ent)
{
ent.Flags[ent.CurrentIndex] = SnapHistory <TSnap, TStatic> .FlagGold;
if (ent.First)
{
NetSnapper.ServerSendDeltaAllFirst((byte)ent.EntityId, EntityType);
}
else
{
NetSnapper.ServerSendDeltaAllSecond(ent.EntityId, EntityType);
}
}
public bool PrepDeltaSecond(ushort entityid, ushort timestamp, ushort basisTimestamp,
out byte len)
{
len = 0;
// if ``, can't possibly belong to this snapper
if (entityid >= SecondEntityIdToInnerId.Length)
{
return(false);
}
// if ``, this snapper doesn't have this entity
int innerid = SecondEntityIdToInnerId[entityid];
if (innerid == -1)
{
return(false);
}
SnapHistory <TSnap, TStatic> h = SecondData.Values[SecondData.IdsToIndices[innerid]];
int index = h.FindIndex(timestamp);
if (index == -1)
{
return(false);
}
int basisIndex = h.FindIndex(basisTimestamp);
if (basisIndex == -1)
{
return(false);
}
TempWriteHistory = h;
TempWriteIndex = index;
len = Packer.PrepPackDelta(
h.Shots[index],
h.Shots[basisIndex],
out PackInfo);
return(true);
}
private bool UnpackFull(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
int innerid,
byte[] blob, int blobstart, int blobcount,
ushort timestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Values[data.IdsToIndices[innerid]];
int index = sh.FindIndex(timestamp);
if (index < 0)
{
return(false); // out of bounds-- too far in future or past
}
Packer.UnpackFull(ref sh.Shots[index], ref sh.StaticData, blob, blobstart, blobcount);
sh.Timestamps[index] = timestamp;
sh.Flags[index] = SnapHistory <TSnap, TStatic> .FlagGold;
// handle flag rollover
Rollover(sh, index, timestamp);
return(true);
}
public void ServerAdvance()
{
for (int d = 0; d < NentDatas.Length; d++)
{
ReArrayIdPool<SnapHistory<TSnap, TStatic>> data = NentDatas[d];
for (int i = 0; i < data.Count; i++)
{
SnapHistory<TSnap, TStatic> h = data.Values[i];
if (h.PrevFlag != SnapHistory<TSnap, TStatic>.FlagGold)
continue; // if the prevflag is not gold,
// the entity does not exist at this timestamp
// so we don't bother simulating it yet
// now we advance the snapshot forward to the current point in
// time, and then save it
byte ownerPid = Advancer.GetInputPlayer(h.Shots[h.CurrentIndex], h.StaticData);
if (ownerPid != 0)
{
// if we have no inputs, do regular advancement
h.Shots[h.CurrentIndex] = h.Shots[h.PrevIndex];
if (!InputChecker(h, ref h.Shots[h.CurrentIndex], ownerPid, NetSnapper.TickMSTarget))
{
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.Shots[h.CurrentIndex], NetSnapper.TickMSTarget);
}
}
else
{
// if this were client, we'd check the flag of the next.
// as it is, just create the next from the current
h.Shots[h.CurrentIndex] = h.Shots[h.PrevIndex];
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.Shots[h.CurrentIndex], NetSnapper.TickMSTarget);
}
Nents.ServerSaveSimIntoCurrent(h);
}
}
}
private bool UnpackFull(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
int innerid,
byte[] blob, int blobstart, int blobcount,
ushort timestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Values[data.IdsToIndices[innerid]];
int index = sh.FindIndex(timestamp);
if (index < 0)
{
return(false); // out of bounds-- too far in future or past
}
Packer.UnpackFull(ref sh.Shots[index], ref sh.StaticData, blob, blobstart, blobcount);
sh.Timestamps[index] = timestamp;
sh.Flags[index] = SnapHistory <TSnap, TStatic> .FlagGold;
// ask the server to resimulate from this timestamp
// to ensure our silver guesses get updated
NetSnapper.RequestResimulate(timestamp);
return(true);
}
// Prime Logic
// Advancement occurs every tick
public void Advance(ushort currentTime)
{
CurrentTime = currentTime;
// when we advance, push every leading edge forward
for (int i = 0; i < FirstData.Count; i++)
{
SnapHistory <TSnap, TStatic> sh = FirstData.Values[i];
ushort last = sh.Timestamps[sh.LeadingIndex];
ushort next = last == ushort.MaxValue ? (ushort)0 : (ushort)(last + 1);
int startIndex = sh.LeadingIndex;
sh.LeadingIndex++;
if (sh.LeadingIndex == sh.Shots.Length)
{
sh.LeadingIndex = 0;
}
if (sh.Timestamps[sh.LeadingIndex] != next)
{
// we haven't received the next snap yet, so destroy it and
// ensure that it is empty for the simulator
sh.Timestamps[sh.LeadingIndex] = next;
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagEmpty;
// note: we don't need to actually call Clear on the snapshot
// since the fact that it's marked with an empty flag means
// the simulator should avoid using it.
// if the previous snapshot was deghosted,
// deghost this one as well.
if (sh.Flags[startIndex] == SnapHistory <TSnap, TStatic> .FlagDeghosted)
{
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagDeghosted;
}
}
}
// same logic as above but for second data
// only reason we don't use a method for this is having that many method
// calls seems like a waste.
for (int i = 0; i < SecondData.Count; i++)
{
SnapHistory <TSnap, TStatic> sh = SecondData.Values[i];
ushort last = sh.Timestamps[sh.LeadingIndex];
ushort next = last == ushort.MaxValue ? (ushort)0 : (ushort)(last + 1);
int startIndex = sh.LeadingIndex;
sh.LeadingIndex++;
if (sh.LeadingIndex == sh.Shots.Length)
{
sh.LeadingIndex = 0;
}
if (sh.Timestamps[sh.LeadingIndex] != next)
{
sh.Timestamps[sh.LeadingIndex] = next;
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagEmpty;
if (sh.Flags[startIndex] == SnapHistory <TSnap, TStatic> .FlagDeghosted)
{
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagDeghosted;
}
}
}
// now check our destruct queues
if (FirstDestructQueue.Count > 0)
{
for (int i = FirstDestructQueue.Count - 1; i >= 0; i--)
{
ushort destructTime = FirstDestructQueueTime[i];
int dist = 0;
if (currentTime < destructTime)
{
dist = (ushort.MaxValue - destructTime) + currentTime;
}
else
{
dist = currentTime - destructTime;
}
if (dist < FirstWindowLength)
{
break;
}
NetSnapper.ServerDestructFirst(FirstDestructQueue[i]);
FirstDestructQueue.RemoveAt(i);
FirstDestructQueueTime.RemoveAt(i);
}
}
if (SecondDestructQueue.Count > 0)
{
for (int i = SecondDestructQueue.Count - 1; i >= 0; i--)
{
ushort destructTime = SecondDestructQueueTime[i];
int dist = 0;
if (currentTime < destructTime)
{
dist = (ushort.MaxValue - destructTime) + currentTime;
}
else
{
dist = currentTime - destructTime;
}
if (dist < FirstWindowLength)
{
break;
}
NetSnapper.ServerDestructSecond(SecondDestructQueue[i]);
SecondDestructQueue.RemoveAt(i);
SecondDestructQueueTime.RemoveAt(i);
}
}
}
private void Rollover(SnapHistory <TSnap, TStatic> sh, int index, ushort timestamp)
{
// this whole idea has to be reworked
// I guess an issue is that one of our key assumptions
// is that the indices will always be populated with timestamps
// so we need to have some kind of rollover
// but doing the extrap action here is not good
// 1. it's not real simulated
// 2. why not do interp when available?
// one option would be to do simple extrap/interp here
// or even just copy the same snapshot over and over
// and then, when we get an older timestamp, flag the simulator
// as "needs rollback calculation" (ONLY IF WE ACTUALLY HAVE ANY
// SILVER SNAPSHOTS AHEAD OF THIS TIMESTAMP)
// then, at the end of each processing, if the simulator has
// this flag set, it will run again from whatever the oldest time
// flagged was (need to track the timestamp of each flagging as well)
// this will generate new silver snapshots, and they'll be accurate to boot.
// RE: THIS DISCUSSION
// we decided to do the "resimulate flagging" approach
// so the way this works now is that if we receive a timestamp,
// and there's unknowns in front of it,
// the system gets asked to resimulate from that timestamp
int nindex = index + 1;
ushort nextTime = timestamp;
if (nindex == sh.Shots.Length)
{
nindex = 0;
}
if (nextTime == ushort.MaxValue)
{
nextTime = 0;
}
else
{
nextTime++;
}
// we can only rollover onto silver flags
if (sh.Flags[nindex] != SnapHistory <TSnap, TStatic> .FlagSilver && sh.Flags[nindex] != SnapHistory <TSnap, TStatic> .FlagEmpty)
{
return;
}
// can only rollover onto subsequent timestamps
if (sh.Timestamps[nindex] != nextTime)
{
return;
}
// if we get here, then we hit a silver or an empty that must be filled out
// tell the snap system to resimulate
NetSnapper.RequestResimulate(timestamp);
// VVVV OLD VVVV
/*
* // flags need to act a certain way to allow us to have
* // snapshots roll over when no changes are needed
* // e.g.:
* // 1 = from server (GOLD STANDARD)
* // 2 = roll over, this occurs when no snapshot is received
* // we assume shot is unchanged and use it again for next
* // timestamp
* // now imagine we have some snaps:
* // aaaaabb
* // 1222212
* // ^ and here we receive a new snapshot c
* // we SCROLL FORWARD and replace all 2s with the new snapshot:
* // aacccbb
* // 1212212
* // this way we can let client continue to scroll forward but
* // also correct itself properly
* int nindex = index + 1;
* ushort nextTime = timestamp;
* int rolls = 1;
* while (true)
* {
* if (nindex == sh.Shots.Length)
* nindex = 0;
*
* if (nextTime == ushort.MaxValue)
* nextTime = 0;
* else
* nextTime++;
*
* // we can only rollover onto silver flags
* if (sh.Flags[nindex] != SnapHistory<T>.FlagSilver && sh.Flags[nindex] != SnapHistory<T>.FlagEmpty)
* break;
*
* // can only rollover onto subsequent timestamps
* if (sh.Timestamps[nindex] != nextTime)
* break;
*
* // now we're ready to roll
* ExtrapolateAction(ref sh.Shots[nindex], sh.Shots[index], TickMS * rolls);
* rolls++;
*
* nindex++;
* }*/
}
private int Ghost(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
ushort entityid,
byte[] blob, int blobstart, int blobcount,
ushort timestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Request();
sh.EntityId = entityid;
sh.LeadingIndex = 0;
sh.Timestamps[0] = CurrentTime;
// setup the rest of the future timestamps
ushort itime = sh.Timestamps[0];
for (int i = 1; i <= sh.Shots.Length / 2; i++)
{
if (itime == ushort.MaxValue)
{
itime = 0;
}
else
{
itime++;
}
sh.Timestamps[i] = itime;
}
// and the past
itime = sh.Timestamps[0];
for (int i = 0; i < sh.Shots.Length / 2; i++)
{
if (itime == 0)
{
itime = ushort.MaxValue;
}
else
{
itime--;
}
sh.Timestamps[sh.Shots.Length - 1 - i] = itime;
}
int expIndex = sh.FindIndex(timestamp);
if (expIndex == -1)
{
// in this case, we need to just abandon the snapshot we
// received. This can obviously create issues since we'll
// need a full snapshot again.
// however, we still unpack it in full, so the static data
// can be constructed
Packer.UnpackFull(ref sh.Shots[0], ref sh.StaticData, blob, blobstart, blobcount);
sh.Flags[0] = SnapHistory <TSnap, TStatic> .FlagEmpty;
}
else
{
// if the snapshot we received has a space in the current window,
// so just unpack into there
Packer.UnpackFull(ref sh.Shots[expIndex], ref sh.StaticData, blob, blobstart, blobcount);
sh.Timestamps[expIndex] = timestamp;
sh.Flags[expIndex] = SnapHistory <TSnap, TStatic> .FlagGold;
}
// return the innerid
return(sh.PoolId);
}
// Prime Logic
// Advancement occurs every tick
public void Advance(ushort currentTime)
{
CurrentTime = currentTime;
// when we advance, push every leading edge forward
for (int i = 0; i < FirstData.Count; i++)
{
SnapHistory <TSnap, TStatic> sh = FirstData.Values[i];
ushort last = sh.Timestamps[sh.LeadingIndex];
ushort next = last == ushort.MaxValue ? (ushort)0 : (ushort)(last + 1);
int startIndex = sh.LeadingIndex;
sh.LeadingIndex++;
if (sh.LeadingIndex == sh.Shots.Length)
{
sh.LeadingIndex = 0;
}
if (sh.Timestamps[sh.LeadingIndex] != next)
{
// we haven't received the next snap yet, so destroy it and
// ensure that it is empty for the simulator
sh.Timestamps[sh.LeadingIndex] = next;
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagEmpty;
// note: we don't need to actually call Clear on the snapshot
// since the fact that it's marked with an empty flag means
// the simulator should avoid using it.
// if the previous snapshot was deghosted,
// deghost this one as well.
if (sh.Flags[startIndex] == SnapHistory <TSnap, TStatic> .FlagDeghosted)
{
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagDeghosted;
}
}
}
// same logic as above but for second data
// only reason we don't use a method for this is having that many method
// calls seems like a waste.
for (int i = 0; i < SecondData.Count; i++)
{
SnapHistory <TSnap, TStatic> sh = SecondData.Values[i];
ushort last = sh.Timestamps[sh.LeadingIndex];
ushort next = last == ushort.MaxValue ? (ushort)0 : (ushort)(last + 1);
int startIndex = sh.LeadingIndex;
sh.LeadingIndex++;
if (sh.LeadingIndex == sh.Shots.Length)
{
sh.LeadingIndex = 0;
}
if (sh.Timestamps[sh.LeadingIndex] != next)
{
sh.Timestamps[sh.LeadingIndex] = next;
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagEmpty;
if (sh.Flags[startIndex] == SnapHistory <TSnap, TStatic> .FlagDeghosted)
{
sh.Flags[sh.LeadingIndex] = SnapHistory <TSnap, TStatic> .FlagDeghosted;
}
}
}
}
// predicts forward a set number of ms
public void ClientPredictMS(float delta)
{
for (int d = 0; d < NentDatas.Length; d++)
{
ReArrayIdPool<SnapHistory<TSnap, TStatic>> data = NentDatas[d];
for (int i = 0; i < data.Count; i++)
{
SnapHistory<TSnap, TStatic> h = data.Values[i];
// if the impulse time has moved up, move up the entity's to match
if (h.HasImpulse &&
((NetSnapper.ClientImpulseTime >= 500
&& h.ImpulseTimestamp < NetSnapper.ClientImpulseTime
&& h.ImpulseTimestamp >= NetSnapper.ClientImpulseTime - 500)
|| (NetSnapper.ClientImpulseTime < 500
&& h.ImpulseTimestamp < NetSnapper.ClientImpulseTime)
|| (NetSnapper.ClientImpulseTime < 500
&& h.ImpulseTimestamp >= ushort.MaxValue - 500)))
h.ImpulseTimestamp = NetSnapper.ClientImpulseTime;
if (h.PrevFlag == SnapHistory<TSnap, TStatic>.FlagEmpty
|| h.PrevFlag == SnapHistory<TSnap, TStatic>.FlagDeghosted)
continue; // if the prev flag is empty, this entity does
// not exist yet
// if the entity has impulse, we may need to predict
// if the current timestamp is after the impulse timestamp
if (h.HasImpulse
&& ((NetSnapper.SimulateTimestamp >= h.ImpulseTimestamp
&& !(NetSnapper.SimulateTimestamp >= ushort.MaxValue - 500
&& h.ImpulseTimestamp <= 500))
|| (NetSnapper.SimulateTimestamp <= 500
&& h.ImpulseTimestamp >= ushort.MaxValue - 500)))
{
// first, check if we have an input
// we could only have an input if we are the owner of this object
byte inputPid = Advancer.GetInputPlayer(h.ImpulseShot, h.StaticData);
if (inputPid == Server.OurPlayerId)
{
// now check if we have any inputs
// if so, process them
if (!InputChecker(h, ref h.ImpulseShot, inputPid, delta))
{
// if not, do a normal advance
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.ImpulseShot, delta);
}
}
else
{
// if we couldn't have an input, just do a normal advance
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.ImpulseShot, delta);
}
// now check if we need to blend
if (!h.PermanentImpulse
&& ((NetSnapper.SimulateTimestamp >= h.BlendTimestamp
&& !(NetSnapper.SimulateTimestamp >= ushort.MaxValue - 500
&& h.BlendTimestamp <= 500))
|| (NetSnapper.SimulateTimestamp <= 500
&& h.BlendTimestamp >= ushort.MaxValue - 500)))
{
// we're in the Blend Zone
// find the snapshot that we would be displaying, if this were not
// an impulse.
TSnap blendTarget = h.Shots[h.CurrentIndex];
if (h.NextFlag == SnapHistory<TSnap, TStatic>.FlagGold
|| h.NextFlag == SnapHistory<TSnap, TStatic>.FlagSilver)
{
Advancer.InterpMSLogic(h, ref blendTarget, delta, NetSnapper.TickMSTarget);
}
else
{
Advancer.AdvanceLogic(AdvancerConfig, h, ref blendTarget, delta);
}
// determine the blend factor
int blendTicks = NetSnapper.SimulateTimestamp;
if (NetSnapper.SimulateTimestamp <= 500
&& h.BlendTimestamp >= ushort.MaxValue - 500)
{
blendTicks = (ushort.MaxValue - h.BlendTimestamp) + 1 + NetSnapper.SimulateTimestamp;
}
else
{
blendTicks -= h.BlendTimestamp;
}
h.ActiveBlendFactor = blendTicks * h.BlendFactor
+ h.BlendFactor * (delta/NetSnapper.TickMSTarget);
if (h.ActiveBlendFactor > 1)
{
h.ActiveBlendFactor = 1;
// special consideration:
// if the impulse time equals the simulate time (in other words,
// this is our first timestamp of the predictive window), and
// our blend factor is already over 1, then we are already
// back to being in-sync with the server, so we can remove impulse
// from this entity.
if (NetSnapper.ClientImpulseTime == NetSnapper.SimulateTimestamp)
{
h.HasImpulse = false;
}
}
// now blend the shots together
Advancer.BlendLogic(h, ref h.ImpulseShot, blendTarget, h.ActiveBlendFactor);
}
// finally, continue so we don't hit the interp logic below
continue;
}
// if it's not impulse, we need to interp or extrap as normal
// so we know the prev is good for interp, but is the next?
// if the next is also good for interp, we'll just interp
h.ImpulseShot = h.Shots[h.CurrentIndex];
if (h.NextFlag == SnapHistory<TSnap, TStatic>.FlagGold
|| h.NextFlag == SnapHistory<TSnap, TStatic>.FlagSilver)
{
Advancer.InterpMSLogic(h, ref h.ImpulseShot, delta, NetSnapper.TickMSTarget);
}
else
{
// otherwise, do extrapolation
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.ImpulseShot, delta);
}
// note: we don't save this, it is just for rendering
}
}
}
public void ClientSaveSimIntoCurrent(SnapHistory <TSnap, TStatic> ent)
{
ent.Flags[ent.CurrentIndex] = SnapHistory <TSnap, TStatic> .FlagSilver;
}
private int Ghost(ReArrayIdPool <SnapHistory <TSnap, TStatic> > data,
ushort entityid,
byte[] blob, int blobstart, int blobcount,
ushort timestamp)
{
SnapHistory <TSnap, TStatic> sh = data.Request();
sh.EntityId = entityid;
Packer.UnpackFull(ref sh.Shots[0], ref sh.StaticData, blob, blobstart, blobcount);
sh.Timestamps[0] = timestamp;
sh.Flags[0] = SnapHistory <TSnap, TStatic> .FlagGold;
sh.LeadingIndex = 0;
// now, figure how close we are to current time
// under normal conditions, we should be receiving snapshots
// very close to the CurrentTime
int expIndex = sh.FindIndex(CurrentTime);
// however, if the expIndex is -1, it means the snapshot
// we just received is outside the current window
// (because CurrentTime relative to it is outside the window)
if (expIndex == -1)
{
// in this case, we need to just abandon the snapshot we
// received. This can obviously create issues since we'll
// need a full snapshot again.
sh.Timestamps[0] = CurrentTime;
sh.Flags[0] = SnapHistory <TSnap, TStatic> .FlagEmpty;
}
else
{
// in this case, we're within the window, so let's
// just set the leading index properly.
sh.LeadingIndex = expIndex;
sh.Timestamps[sh.LeadingIndex] = CurrentTime;
}
// setup the rest of the future timestamps
ushort itime = sh.Timestamps[0];
for (int i = 1; i <= sh.Shots.Length / 2; i++)
{
if (itime == ushort.MaxValue)
{
itime = 0;
}
else
{
itime++;
}
sh.Timestamps[i] = itime;
}
// and the past
itime = sh.Timestamps[0];
for (int i = 0; i < sh.Shots.Length / 2; i++)
{
if (itime == 0)
{
itime = ushort.MaxValue;
}
else
{
itime--;
}
sh.Timestamps[sh.Shots.Length - 1 - i] = itime;
}
// return the innerid
return(sh.PoolId);
}
// predicts forward a whole tick
// this returns true if all impulse entities have conf snapshots
// indicating that we can turn up the impulseTimestamp
public bool ClientPredictTick(ushort confTimestamp)
{
ushort prevConfTimestamp = confTimestamp;
if (prevConfTimestamp == 0)
prevConfTimestamp = ushort.MaxValue;
else
prevConfTimestamp--;
bool noMissingImpulse = true;
for (int d = 0; d < NentDatas.Length; d++)
{
ReArrayIdPool<SnapHistory<TSnap, TStatic>> data = NentDatas[d];
for (int i = 0; i < data.Count; i++)
{
SnapHistory<TSnap, TStatic> h = data.Values[i];
if (h.PrevFlag == SnapHistory<TSnap, TStatic>.FlagEmpty
|| h.PrevFlag == SnapHistory<TSnap, TStatic>.FlagDeghosted)
continue; // if the prev flag is empty, this entity does
// not exist yet
// if the entity has impulse, we may need to predict
// if the current timestamp is after the impulse timestamp
if (h.HasImpulse
&& ((NetSnapper.SimulateTimestamp >= h.ImpulseTimestamp
&& !(NetSnapper.SimulateTimestamp >= ushort.MaxValue - 500
&& h.ImpulseTimestamp <= 500))
|| (NetSnapper.SimulateTimestamp <= 500
&& h.ImpulseTimestamp >= ushort.MaxValue - 500)))
{
// cases:
// 0. if SimulateTimestamp is before h.ImpulseTimestamp, don't
// predict, do normal interp
// 1. if this entity has a gold snapshot in SimulateTimestamp + I,
// then don't predict; use the server result
// 2. if not, advance a predicted result
// case 0 is accounted for by the if statement above
// case 1
int confIndex = h.FindIndex(confTimestamp);
if (confIndex != -1
&& h.Flags[confIndex] == SnapHistory<TSnap, TStatic>.FlagGold
&& h.ImpulseTimestamp == NetSnapper.SimulateTimestamp)
{
// in this case, our job is easy, we have a server confirmed snap
// so we just use that
h.ImpulseShot = h.Shots[confIndex];
//NetSnapper.Server.NetLogger.Log(NetSnapper.SimulateTimestamp + " / " + confTimestamp + " F");
}
else
{
// case 2
// in this case, we must predict based on the current ImpulseShot
// because we got here, we are missing a conf for this impulse
// so we can't move up the NetSnapper's ImpulseTimestamp
noMissingImpulse = false;
if (h.ImpulseTimestamp == NetSnapper.SimulateTimestamp)
{
// special consideration: if this is our first impulse,
// we must populate ImpulseShot
// if we have a confirmed shot for the previous timestamp,
// we should use that
// if we don't, this must be our first prediction, so we
// can simply use the previous snapshot
int prevConfIndex = h.FindIndex(prevConfTimestamp);
if (prevConfIndex != -1
&& h.Flags[prevConfIndex] == SnapHistory<TSnap, TStatic>.FlagGold)
{
h.ImpulseShot = h.Shots[prevConfIndex];
//NetSnapper.Server.NetLogger.Log(h.ImpulseTimestamp + " / " + prevConfTimestamp + " C");
}
else
{
h.ImpulseShot = h.Shots[h.PrevIndex];
//NetSnapper.Server.NetLogger.Log(h.ImpulseTimestamp + " / " + prevConfTimestamp + " P");
}
}
// first, check if we have an input
// we could only have an input if we are the owner of this object
byte inputPid = Advancer.GetInputPlayer(h.ImpulseShot, h.StaticData);
if (inputPid == Server.OurPlayerId)
{
// now check if we have any inputs
// if so, process them
if (!InputChecker(h, ref h.ImpulseShot, inputPid, NetSnapper.TickMSTarget))
{
// if not, do a normal advance
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.ImpulseShot, NetSnapper.TickMSTarget);
}
}
else
{
// if we couldn't have an input, just do a normal advance
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.ImpulseShot, NetSnapper.TickMSTarget);
}
}
}
// even if we did impulse above, we still want to interp
// because we may need to create silver snapshots to use for
// blending or impulse later
// if we have a gold from the server, we don't need to do anything
// because the current shot is already good
if (h.CurrentFlag == SnapHistory<TSnap, TStatic>.FlagGold)
continue;
// (you might notice from the following, that we resimulate silver
// flags [client guesses] each tick; this way they continue to update
// their guesses if new server info arrives)
// if not, we need to create a silver for the current shot
// we know the previous is gold or silver already, since we checked
// for empty or ghost way back above
// so we know the prev is good for interp, but is the next?
// if the next is also good for interp, we'll just interp
h.Shots[h.CurrentIndex] = h.Shots[h.PrevIndex];
if (h.NextFlag == SnapHistory<TSnap, TStatic>.FlagGold
|| h.NextFlag == SnapHistory<TSnap, TStatic>.FlagSilver)
{
Advancer.InterpTickLogic(h);
}
else
{
// otherwise, do extrapolation
Advancer.AdvanceLogic(AdvancerConfig, h, ref h.Shots[h.CurrentIndex], NetSnapper.TickMSTarget);
}
// save our guess snapshot as a new silver
Nents.ClientSaveSimIntoCurrent(h);
}
}
return noMissingImpulse;
}
// returns false if we have no inputs
private bool InputChecker(SnapHistory<TSnap, TStatic> h, ref TSnap snap,
byte pid, float maxms)
{
TInput[] actions = Input.GetPlayerInputs(pid,
out int index, out int count,
out ushort[] timestamps, out float[] tickms);
if (count == 0)
return false;
ushort simstamp = NetSnapper.SimulateTimestamp;
// timestamps are ordered from oldest --> latest
// loop through seeking our current timestamp
float lastms = 0;
TInput lastAction = new TInput();
bool hasLastAction = false;
for (int i = 0; i < count; i++)
{
// if timestamps[index] is later than our timestamp, stop
// if timestamps[index] is earlier than our timestamp, keep going
// if timestamps[index] is equal to our timestamp, process it
if (timestamps[index] == simstamp)
{
// if we are past the maxms we should process to, then stop
if (tickms[index] >= maxms)
{
break;
}
// process it
if (hasLastAction)
{
Advancer.InputLogic(AdvancerConfig, lastAction, h, ref snap, pid, tickms[index] - lastms);
}
hasLastAction = true;
lastms = tickms[index];
lastAction = actions[index];
}
else if (simstamp >= ushort.MaxValue / 2)
{
if (timestamps[index] > simstamp
|| timestamps[index] < simstamp - (ushort.MaxValue / 2))
{
// later
break;
}
}
else
{
if (timestamps[index] > simstamp
&& timestamps[index] < simstamp + (ushort.MaxValue / 2))
{
// later
break;
}
}
index++;
if (index >= actions.Length)
index -= actions.Length;
}
// process the last action, now that we're done
if (hasLastAction)
{
// we use the tickrate here bbecause this action stretches until the end
// of the tick, since there are no subsequent actions in this tick
Advancer.InputLogic(AdvancerConfig, lastAction, h, ref snap, pid, maxms - lastms);
}
return true;
}