private bool DeserializeEntity(uint serverTick, ref DataStreamReader dataStream, ref DeserializeData data)
{
if (data.targetArchLen == 0)
{
#if UNITY_EDITOR || DEVELOPMENT_BUILD
data.curPos = dataStream.GetBitsRead();
if (data.statCount > 0)
{
int statType = (int)data.targetArch;
netStats[statType * 3 + 4] = netStats[statType * 3 + 4] + data.statCount;
netStats[statType * 3 + 5] = netStats[statType * 3 + 5] + (uint)(data.curPos - data.startPos);
netStats[statType * 3 + 6] = netStats[statType * 3 + 6] + data.uncompressedCount;
}
data.startPos = data.curPos;
data.statCount = 0;
data.uncompressedCount = 0;
#endif
data.targetArch = dataStream.ReadPackedUInt(compressionModel);
data.targetArchLen = dataStream.ReadPackedUInt(compressionModel);
}
--data.targetArchLen;
if (data.baselineLen == 0)
{
data.baselineTick = serverTick - dataStream.ReadPackedUInt(compressionModel);
data.baselineTick2 = serverTick - dataStream.ReadPackedUInt(compressionModel);
data.baselineTick3 = serverTick - dataStream.ReadPackedUInt(compressionModel);
data.baselineLen = dataStream.ReadPackedUInt(compressionModel);
if (data.baselineTick3 != serverTick &&
(data.baselineTick3 == data.baselineTick2 || data.baselineTick2 == data.baselineTick))
{
#if ENABLE_UNITY_COLLECTIONS_CHECKS
UnityEngine.Debug.LogError("Received invalid snapshot baseline from server");
#endif
return(false);
}
}
--data.baselineLen;
int ghostId = (int)dataStream.ReadPackedUInt(compressionModel);
uint serverSpawnTick = 0;
if (data.baselineTick == serverTick)
{
serverSpawnTick = dataStream.ReadPackedUInt(compressionModel);
}
var typeData = GhostTypeCollection[(int)data.targetArch];
int changeMaskUints = GhostCollectionSystem.ChangeMaskArraySizeInUInts(typeData.ChangeMaskBits);
int snapshotOffset;
int snapshotSize = typeData.SnapshotSize;
byte *baselineData = (byte *)UnsafeUtility.Malloc(snapshotSize, 16, Allocator.Temp);
UnsafeUtility.MemClear(baselineData, snapshotSize);
Entity gent;
DynamicBuffer <SnapshotDataBuffer> snapshotDataBuffer;
SnapshotData snapshotDataComponent;
byte * snapshotData;
bool existingGhost = ghostEntityMap.TryGetValue(ghostId, out gent);
if (existingGhost && snapshotDataBufferFromEntity.HasComponent(gent) && ghostFromEntity[gent].ghostType == data.targetArch)
{
snapshotDataBuffer = snapshotDataBufferFromEntity[gent];
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (snapshotDataBuffer.Length != snapshotSize * GhostSystemConstants.SnapshotHistorySize)
{
throw new InvalidOperationException($"Invalid snapshot buffer size");
}
#endif
snapshotData = (byte *)snapshotDataBuffer.GetUnsafePtr();
snapshotDataComponent = snapshotDataFromEntity[gent];
snapshotDataComponent.LatestIndex = (snapshotDataComponent.LatestIndex + 1) % GhostSystemConstants.SnapshotHistorySize;
snapshotDataFromEntity[gent] = snapshotDataComponent;
if (data.baselineTick != serverTick)
{
for (int bi = 0; bi < snapshotDataBuffer.Length; bi += snapshotSize)
{
if (*(uint *)(snapshotData + bi) == data.baselineTick)
{
UnsafeUtility.MemCpy(baselineData, snapshotData + bi, snapshotSize);
break;
}
}
if (*(uint *)baselineData == 0)
{
return(false); // Ack desync detected
}
}
if (data.baselineTick3 != serverTick)
{
byte *baselineData2 = null;
byte *baselineData3 = null;
for (int bi = 0; bi < snapshotDataBuffer.Length; bi += snapshotSize)
{
if (*(uint *)(snapshotData + bi) == data.baselineTick2)
{
baselineData2 = snapshotData + bi;
}
if (*(uint *)(snapshotData + bi) == data.baselineTick3)
{
baselineData3 = snapshotData + bi;
}
}
if (baselineData2 == null || baselineData3 == null)
{
return(false); // Ack desync detected
}
snapshotOffset = GhostCollectionSystem.SnapshotSizeAligned(4 + changeMaskUints * 4);
var predictor = new GhostDeltaPredictor(serverTick, data.baselineTick, data.baselineTick2, data.baselineTick3);
for (int comp = 0; comp < typeData.NumComponents; ++comp)
{
int compIdx = GhostComponentIndex[typeData.FirstComponent + comp].ComponentIndex;
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (snapshotOffset + GhostComponentCollection[compIdx].SnapshotSize > snapshotSize)
{
throw new InvalidOperationException("Snapshot buffer overflow during predict");
}
#endif
GhostComponentCollection[compIdx].PredictDelta.Ptr.Invoke((IntPtr)(baselineData + snapshotOffset), (IntPtr)(baselineData2 + snapshotOffset), (IntPtr)(baselineData3 + snapshotOffset), ref predictor);
snapshotOffset += GhostCollectionSystem.SnapshotSizeAligned(GhostComponentCollection[compIdx].SnapshotSize);
}
}
}
else
{
if (existingGhost)
{
// The ghost entity map is out of date, clean it up
ghostEntityMap.Remove(ghostId);
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (ghostFromEntity.HasComponent(gent) && ghostFromEntity[gent].ghostType != data.targetArch)
{
UnityEngine.Debug.LogError("Received a ghost with an invalid ghost type");
}
UnityEngine.Debug.LogError("Found a ghost in the ghost map which does not have an entity connected to it. This can happen if you delete ghost entities on the client.");
#endif
}
if (data.baselineTick != serverTick)
{
// If the server specifies a baseline for a ghost we do not have that is an error
return(false);
}
++data.newGhosts;
var ghostSpawnBuffer = ghostSpawnBufferFromEntity[ghostSpawnEntity];
snapshotDataBuffer = snapshotDataBufferFromEntity[ghostSpawnEntity];
var snapshotDataBufferOffset = snapshotDataBuffer.Length;
ghostSpawnBuffer.Add(new GhostSpawnBuffer {
GhostType = (int)data.targetArch, GhostID = ghostId, DataOffset = snapshotDataBufferOffset, ClientSpawnTick = serverTick, ServerSpawnTick = serverSpawnTick
});
snapshotDataBuffer.ResizeUninitialized(snapshotDataBufferOffset + snapshotSize);
snapshotData = (byte *)snapshotDataBuffer.GetUnsafePtr() + snapshotDataBufferOffset;
UnsafeUtility.MemClear(snapshotData, snapshotSize);
snapshotDataComponent = new SnapshotData {
SnapshotSize = snapshotSize, LatestIndex = 0
};
}
int maskOffset = 0;
snapshotOffset = GhostCollectionSystem.SnapshotSizeAligned(4 + changeMaskUints * 4);
snapshotData += snapshotSize * snapshotDataComponent.LatestIndex;
*(uint *)(snapshotData) = serverTick;
uint *changeMask = (uint *)(snapshotData + 4);
for (int cm = 0; cm < changeMaskUints; ++cm)
{
changeMask[cm] = dataStream.ReadPackedUIntDelta(((uint *)(baselineData + 4))[cm], compressionModel);
}
for (int comp = 0; comp < typeData.NumComponents; ++comp)
{
int compIdx = GhostComponentIndex[typeData.FirstComponent + comp].ComponentIndex;
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (maskOffset + GhostComponentCollection[compIdx].ChangeMaskBits > typeData.ChangeMaskBits || snapshotOffset + GhostComponentCollection[compIdx].SnapshotSize > snapshotSize)
{
throw new InvalidOperationException("Snapshot buffer overflow during deserialize");
}
#endif
GhostComponentCollection[compIdx].Deserialize.Ptr.Invoke((IntPtr)(snapshotData + snapshotOffset), (IntPtr)(baselineData + snapshotOffset), ref dataStream, ref compressionModel, (IntPtr)changeMask, maskOffset);
snapshotOffset += GhostCollectionSystem.SnapshotSizeAligned(GhostComponentCollection[compIdx].SnapshotSize);
maskOffset += GhostComponentCollection[compIdx].ChangeMaskBits;
}
#if UNITY_EDITOR || DEVELOPMENT_BUILD
++data.statCount;
if (data.baselineTick == serverTick)
{
++data.uncompressedCount;
}
#endif
if (typeData.IsGhostGroup != 0)
{
var groupLen = dataStream.ReadPackedUInt(compressionModel);
for (var i = 0; i < groupLen; ++i)
{
if (!DeserializeEntity(serverTick, ref dataStream, ref data))
{
return(false);
}
}
}
return(true);
}