void ReadSnapshot <TInputStream>(int sequence, ref TInputStream input) where TInputStream : NetworkCompression.IInputStream
{
//input.SetStatsType(NetworkCompressionReader.Type.SnapshotSchema);
counters.snapshotsIn++;
// Snapshot may be delta compressed against one or more baselines
// Baselines are indicated by sequence number of the package it was in
var baseSequence = (int)input.ReadPackedIntDelta(sequence - 1, NetworkConfig.baseSequenceContext);
bool enableNetworkPrediction = input.ReadRawBits(1) != 0;
bool enableHashing = input.ReadRawBits(1) != 0;
int baseSequence1 = 0;
int baseSequence2 = 0;
if (enableNetworkPrediction)
{
baseSequence1 = (int)input.ReadPackedIntDelta(baseSequence - 1, NetworkConfig.baseSequence1Context);
baseSequence2 = (int)input.ReadPackedIntDelta(baseSequence1 - 1, NetworkConfig.baseSequence2Context);
}
if (clientDebug.IntValue > 2)
{
if (enableNetworkPrediction)
{
GameDebug.Log((baseSequence > 0 ? "Snap [BL]" : "Snap [ ]") + "(" + sequence + ") " + baseSequence + " - " + baseSequence1 + " - " + baseSequence2);
}
else
{
GameDebug.Log((baseSequence > 0 ? "Snap [BL]" : "Snap [ ]") + "(" + sequence + ") " + baseSequence);
}
}
if (baseSequence == 0)
{
counters.fullSnapshotsIn++;
}
GameDebug.Assert(baseSequence == 0 ||
(sequence > baseSequence && sequence - baseSequence < NetworkConfig.snapshotDeltaCacheSize), "Attempting snapshot encoding with invalid baseline: {0}:{1}", sequence, baseSequence);
var snapshotInfo = snapshots.Acquire(sequence);
snapshotInfo.serverTime = (int)input.ReadPackedIntDelta(baseSequence != 0 ? snapshots[baseSequence].serverTime : 0, NetworkConfig.serverTimeContext);
var temp = (int)input.ReadRawBits(8);
serverSimTime = temp * 0.1f;
// Only update time if received in-order..
// TODO consider dropping out of order snapshots
// TODO detecting out-of-order on pack sequences
if (snapshotInfo.serverTime > serverTime)
{
serverTime = snapshotInfo.serverTime;
snapshotReceivedTime = NetworkUtils.stopwatch.ElapsedMilliseconds;
}
else
{
GameDebug.Log(string.Format("NetworkClient. Dropping out of order snaphot. Server time:{0} snapshot time:{1}", serverTime, snapshotInfo.serverTime));
}
// Read schemas
var schemaCount = input.ReadPackedUInt(NetworkConfig.schemaCountContext);
for (int schemaIndex = 0; schemaIndex < schemaCount; ++schemaIndex)
{
var typeId = (ushort)input.ReadPackedUInt(NetworkConfig.schemaTypeIdContext);
var entityType = new EntityTypeInfo()
{
typeId = typeId
};
entityType.schema = NetworkSchema.ReadSchema(ref input);
entityType.baseline = new byte[NetworkConfig.maxEntitySnapshotDataSize];
NetworkSchema.CopyFieldsToBuffer(entityType.schema, ref input, entityType.baseline);
if (!entityTypes.ContainsKey(typeId))
{
entityTypes.Add(typeId, entityType);
}
}
// Remove any despawning entities that belong to older base sequences
for (int i = 0; i < entities.Count; i++)
{
var e = entities[i];
if (e.type == null)
{
continue;
}
if (e.despawnSequence > 0 && e.despawnSequence <= baseSequence)
{
e.Reset();
}
}
// Read new spawns
m_TempSpawnList.Clear();
var previousId = 1;
var spawnCount = input.ReadPackedUInt(NetworkConfig.spawnCountContext);
for (var spawnIndex = 0; spawnIndex < spawnCount; ++spawnIndex)
{
var id = (int)input.ReadPackedIntDelta(previousId, NetworkConfig.idContext);
previousId = id;
// Register the entity
var typeId = (ushort)input.ReadPackedUInt(NetworkConfig.spawnTypeIdContext); //TODO: use another encoding
GameDebug.Assert(entityTypes.ContainsKey(typeId), "Spawn request with unknown type id {0}", typeId);
byte fieldMask = (byte)input.ReadRawBits(8);
// Check if we already registered the entity since we can receive spawn information
// in several snapshots before the client has ack a package containing the spawn
// TODO (petera) need an max entity id for safety
while (id >= entities.Count)
{
entities.Add(new EntityInfo());
}
if (entities[id].type == null)
{
var e = entities[id];
e.type = entityTypes[typeId];
e.fieldMask = fieldMask;
spawns.Add(id);
}
m_TempSpawnList.Add(id);
}
// Read despawns
var despawnCount = input.ReadPackedUInt(NetworkConfig.despawnCountContext);
for (var despawnIndex = 0; despawnIndex < despawnCount; ++despawnIndex)
{
var id = (int)input.ReadPackedIntDelta(previousId, NetworkConfig.idContext);
previousId = id;
// we may see despawns many times, only handle if we still have the entity
GameDebug.Assert(id < entities.Count, "Getting despawn for id {0} but we only know about entities up to {1}", id, entities.Count);
if (entities[id].type == null)
{
continue;
}
var entity = entities[id];
// Already in the process of being despawned. This happens with same-snapshot spawn/despawn cases
if (entity.despawnSequence > 0)
{
continue;
}
// If we are spawning and despawning in same snapshot, delay actual deletion of
// entity as we need it around to be able to read the update part of the snapshot
if (m_TempSpawnList.Contains(id))
{
entity.despawnSequence = sequence; // keep until baseSequence >= despawnSequence
}
else
{
entity.Reset(); // otherwise remove right away; no further updates coming, not even in this snap
}
// Add to despawns list so we can request despawn from game later
GameDebug.Assert(!despawns.Contains(id), "Double despawn in same snaphot? {0}", id);
despawns.Add(id);
}
// Predict all active entities
for (var id = 0; id < entities.Count; id++)
{
var info = entities[id];
if (info.type == null)
{
continue;
}
// NOTE : As long as the server haven't gotten the spawn acked, it will keep sending
// delta relative to 0, so we need to check if the entity was in the spawn list to determine
// if the delta is relative to the last update or not
int baseline0Time = 0;
byte[] baseline0 = info.type.baseline;
GameDebug.Assert(baseline0 != null, "Unable to find schema baseline for type {0}", info.type.typeId);
if (baseSequence != 0 && !m_TempSpawnList.Contains(id))
{
baseline0 = info.baselines.FindMax(baseSequence);
GameDebug.Assert(baseline0 != null, "Unable to find baseline for seq {0} for id {1}", baseSequence, id);
baseline0Time = snapshots[baseSequence].serverTime;
}
if (enableNetworkPrediction)
{
uint num_baselines = 1; // 1 because either we have schema baseline or we have a real baseline
int baseline1Time = 0;
int baseline2Time = 0;
byte[] baseline1 = null;
byte[] baseline2 = null;
if (baseSequence1 != baseSequence)
{
baseline1 = info.baselines.FindMax(baseSequence1);
if (baseline1 != null)
{
num_baselines = 2;
baseline1Time = snapshots[baseSequence1].serverTime;
}
if (baseSequence2 != baseSequence1)
{
baseline2 = info.baselines.FindMax(baseSequence2);
if (baseline2 != null)
{
num_baselines = 3;
baseline2Time = snapshots[baseSequence2].serverTime;
}
}
}
// TODO (petera) are these clears needed?
for (int i = 0, c = info.fieldsChangedPrediction.Length; i < c; ++i)
{
info.fieldsChangedPrediction[i] = 0;
}
for (int i = 0; i < NetworkConfig.maxEntitySnapshotDataSize; i++)
{
info.prediction[i] = 0;
}
NetworkPrediction.PredictSnapshot(info.prediction, info.fieldsChangedPrediction, info.type.schema, num_baselines, (uint)baseline0Time, baseline0, (uint)baseline1Time, baseline1, (uint)baseline2Time, baseline2, (uint)snapshotInfo.serverTime, info.fieldMask);
}
else
{
var f = info.fieldsChangedPrediction;
for (var i = 0; i < f.Length; ++i)
{
f[i] = 0;
}
NetworkUtils.MemCopy(baseline0, 0, info.prediction, 0, info.type.schema.GetByteSize());
}
}
// Read updates
var updateCount = input.ReadPackedUInt(NetworkConfig.updateCountContext);
for (var updateIndex = 0; updateIndex < updateCount; ++updateIndex)
{
var id = (int)input.ReadPackedIntDelta(previousId, NetworkConfig.idContext);
previousId = id;
var info = entities[id];
uint hash = 0;
// Copy prediction to temp buffer as we now overwrite info.prediction with fully unpacked
// state by applying incoming delta to prediction.
NetworkUtils.MemCopy(info.prediction, 0, tempSnapshotBuffer, 0, info.type.schema.GetByteSize());
DeltaReader.Read(ref input, info.type.schema, info.prediction, tempSnapshotBuffer, info.fieldsChangedPrediction, info.fieldMask, ref hash);
if (enableHashing)
{
uint hashCheck = input.ReadRawBits(32);
if (hash != hashCheck)
{
GameDebug.Log("Hash check fail for entity " + id);
if (enableNetworkPrediction)
{
GameDebug.Assert(false, "Snapshot (" + snapshotInfo.serverTime + ") " + (baseSequence > 0 ? "Snap [BL]" : "Snap [ ]") + " " + baseSequence + " - " + baseSequence1 + " - " + baseSequence2 + ". Sche: " + schemaCount + " Spwns: " + spawnCount + " Desp: " + despawnCount + " Upd: " + updateCount);
}
else
{
GameDebug.Assert(false, "Snapshot (" + snapshotInfo.serverTime + ") " + (baseSequence > 0 ? "Snap [BL]" : "Snap [ ]") + " " + baseSequence + ". Sche: " + schemaCount + " Spwns: " + spawnCount + " Desp: " + despawnCount + " Upd: " + updateCount);
}
}
}
}
uint snapshotHash = 0; // sum of hash for all (updated or not) entity snapshots
uint numEnts = 0;
for (int id = 0; id < entities.Count; id++)
{
var info = entities[id];
if (info.type == null)
{
continue;
}
// Skip despawned that have not also been spawned in this snapshot
if (info.despawnSequence > 0 && !spawns.Contains(id))
{
continue;
}
// If just spawned or if new snapshot is different from the last we deserialized,
// we need to deserialize. Otherwise just ignore; no reason to deserialize the same
// values again
int schemaSize = info.type.schema.GetByteSize();
if (info.baselines.GetSize() == 0 || NetworkUtils.MemCmp(info.prediction, 0, info.lastUpdate, 0, schemaSize) != 0)
{
var data = info.baselines.Insert(sequence);
NetworkUtils.MemCopy(info.prediction, 0, data, 0, schemaSize);
if (sequence > info.lastUpdateSequence)
{
if (!updates.Contains(id))
{
updates.Add(id);
}
NetworkUtils.MemCopy(info.prediction, 0, info.lastUpdate, 0, schemaSize);
info.lastUpdateSequence = sequence;
}
}
if (enableHashing && info.despawnSequence == 0)
{
snapshotHash += NetworkUtils.SimpleHash(info.prediction, schemaSize);
numEnts++;
}
}
if (clientDebug.IntValue > 1)
{
if (clientDebug.IntValue > 2 || spawnCount > 0 || despawnCount > 0 || schemaCount > 0 || baseSequence == 0)
{
string entityIds = "";
for (var i = 0; i < entities.Count; i++)
{
entityIds += entities[i].type == null ? ",-" : ("," + i);
}
string despawnIds = string.Join(",", despawns);
string spawnIds = string.Join(",", spawns);
string updateIds = string.Join(",", updates);
if (enableNetworkPrediction)
{
GameDebug.Log((baseSequence > 0 ? "Snap [BL]" : "Snap [ ]") + " " + baseSequence + " - " + baseSequence1 + " - " + baseSequence2 + ". Sche: " + schemaCount + " Spwns: " + spawnCount + "(" + spawnIds + ") Desp: " + despawnCount + "(" + despawnIds + ") Upd: " + updateCount + "(" + updateIds + ") Ents:" + entities.Count + " EntityIds:" + entityIds);
}
else
{
GameDebug.Log((baseSequence > 0 ? "Snap [BL]" : "Snap [ ]") + " " + baseSequence + ". Sche: " + schemaCount + " Spwns: " + spawnCount + "(" + spawnIds + ") Desp: " + despawnCount + "(" + despawnIds + ") Upd: " + updateCount + "(" + updateIds + ") Ents:" + entities.Count + " EntityIds:" + entityIds);
}
}
}
if (enableHashing)
{
uint numEntsCheck = input.ReadRawBits(32);
if (numEntsCheck != numEnts)
{
GameDebug.Log("SYNC PROBLEM: server num ents: " + numEntsCheck + " us:" + numEnts);
GameDebug.Assert(false);
}
}
}
unsafe void ReadSnapshot <TInputStream>(int sequence, ref TInputStream input, ISnapshotConsumer consumer) where TInputStream : NetworkCompression.IInputStream
{
//input.SetStatsType(NetworkCompressionReader.Type.SnapshotSchema);
counters.snapshotsIn++;
// Snapshot may be delta compressed against one or more baselines
// Baselines are indicated by sequence number of the package it was in
var haveBaseline = input.ReadRawBits(1) == 1;
var baseSequence = (int)input.ReadPackedIntDelta(sequence - 1, NetworkConfig.baseSequenceContext);
bool enableNetworkPrediction = input.ReadRawBits(1) != 0;
bool enableHashing = input.ReadRawBits(1) != 0;
int baseSequence1 = 0;
int baseSequence2 = 0;
if (enableNetworkPrediction)
{
baseSequence1 = (int)input.ReadPackedIntDelta(baseSequence - 1, NetworkConfig.baseSequence1Context);
baseSequence2 = (int)input.ReadPackedIntDelta(baseSequence1 - 1, NetworkConfig.baseSequence2Context);
}
if (clientDebug.IntValue > 2)
{
if (enableNetworkPrediction)
{
GameDebug.Log((haveBaseline ? "Snap [BL]" : "Snap [ ]") + "(" + sequence + ") " + baseSequence + " - " + baseSequence1 + " - " + baseSequence2);
}
else
{
GameDebug.Log((haveBaseline ? "Snap [BL]" : "Snap [ ]") + "(" + sequence + ") " + baseSequence);
}
}
if (!haveBaseline)
{
counters.fullSnapshotsIn++;
}
GameDebug.Assert(!haveBaseline ||
(sequence > baseSequence && sequence - baseSequence < NetworkConfig.snapshotDeltaCacheSize), "Attempting snapshot encoding with invalid baseline: {0}:{1}", sequence, baseSequence);
var snapshotInfo = snapshots.Acquire(sequence);
snapshotInfo.serverTime = (int)input.ReadPackedIntDelta(haveBaseline ? snapshots[baseSequence].serverTime : 0, NetworkConfig.serverTimeContext);
var temp = (int)input.ReadRawBits(8);
serverSimTime = temp * 0.1f;
// Only update time if received in-order..
// TODO consider dropping out of order snapshots
// TODO detecting out-of-order on pack sequences
if (snapshotInfo.serverTime > serverTime)
{
serverTime = snapshotInfo.serverTime;
snapshotReceivedTime = NetworkUtils.stopwatch.ElapsedMilliseconds;
}
else
{
GameDebug.Log(string.Format("NetworkClient. Dropping out of order snaphot. Server time:{0} snapshot time:{1}", serverTime, snapshotInfo.serverTime));
}
counters.AddSectionStats("snapShotHeader", input.GetBitPosition2(), new Color(0.5f, 0.5f, 0.5f));
// Used by thinclient that wants to very cheaply just do minimal handling of
// snapshots
if (m_DropSnapshots)
{
return;
}
// Read schemas
var schemaCount = input.ReadPackedUInt(NetworkConfig.schemaCountContext);
for (int schemaIndex = 0; schemaIndex < schemaCount; ++schemaIndex)
{
var typeId = (ushort)input.ReadPackedUInt(NetworkConfig.schemaTypeIdContext);
var entityType = new EntityTypeInfo()
{
typeId = typeId
};
entityType.schema = NetworkSchema.ReadSchema(ref input);
counters.AddSectionStats("snapShotSchemas", input.GetBitPosition2(), new Color(0.0f, (schemaIndex & 1) == 1 ? 0.5f : 1.0f, 1.0f));
entityType.baseline = new uint[NetworkConfig.maxEntitySnapshotDataSize];
NetworkSchema.CopyFieldsToBuffer(entityType.schema, ref input, entityType.baseline);
if (!entityTypes.ContainsKey(typeId))
{
entityTypes.Add(typeId, entityType);
}
counters.AddSectionStats("snapShotSchemas", input.GetBitPosition2(), new Color(1.0f, (schemaIndex & 1) == 1 ? 0.5f : 1.0f, 1.0f));
}
// Remove any despawning entities that belong to older base sequences
for (int i = 0; i < entities.Count; i++)
{
var e = entities[i];
if (e.type == null)
{
continue;
}
if (e.despawnSequence > 0 && e.despawnSequence <= baseSequence)
{
e.Reset();
}
}
// Read new spawns
m_TempSpawnList.Clear();
var previousId = 1;
var spawnCount = input.ReadPackedUInt(NetworkConfig.spawnCountContext);
for (var spawnIndex = 0; spawnIndex < spawnCount; ++spawnIndex)
{
var id = (int)input.ReadPackedIntDelta(previousId, NetworkConfig.idContext);
previousId = id;
// Register the entity
var typeId = (ushort)input.ReadPackedUInt(NetworkConfig.spawnTypeIdContext); //TODO: use another encoding
GameDebug.Assert(entityTypes.ContainsKey(typeId), "Spawn request with unknown type id {0}", typeId);
byte fieldMask = (byte)input.ReadRawBits(8);
// TODO (petera) need an max entity id for safety
while (id >= entities.Count)
{
entities.Add(new EntityInfo());
}
// Incoming spawn of different type than what we have for this id, so immediately nuke
// the one we have to make room for the incoming
if (entities[id].type != null && entities[id].type.typeId != typeId)
{
// This should only ever happen in case of no baseline as normally the server will
// not reuse an id before all clients have acknowledged its despawn.
GameDebug.Assert(haveBaseline == false, "Spawning entity but we already have with different type?");
GameDebug.Log("REPLACING old entity: " + id + " because snapshot gave us new type for this id");
despawns.Add(id);
entities[id].Reset();
}
// We can receive spawn information in several snapshots before our ack
// has reached the server. Only pass on spawn to game layer once
if (entities[id].type == null)
{
var e = entities[id];
e.type = entityTypes[typeId];
e.fieldMask = fieldMask;
spawns.Add(id);
}
m_TempSpawnList.Add(id);
}
counters.AddSectionStats("snapShotSpawns", input.GetBitPosition2(), new Color(0, 0.58f, 0));
// Read despawns
var despawnCount = input.ReadPackedUInt(NetworkConfig.despawnCountContext);
// If we have no baseline, we need to clear all entities that are not being spawned
if (!haveBaseline)
{
GameDebug.Assert(despawnCount == 0, "There should not be any despawns in a non-baseline snapshot");
for (int i = 0, c = entities.Count; i < c; ++i)
{
var e = entities[i];
if (e.type == null)
{
continue;
}
if (m_TempSpawnList.Contains(i))
{
continue;
}
GameDebug.Log("NO BL SO PRUNING Stale entity: " + i);
despawns.Add(i);
e.Reset();
}
}
for (var despawnIndex = 0; despawnIndex < despawnCount; ++despawnIndex)
{
var id = (int)input.ReadPackedIntDelta(previousId, NetworkConfig.idContext);
previousId = id;
// we may see despawns many times, only handle if we still have the entity
GameDebug.Assert(id < entities.Count, "Getting despawn for id {0} but we only know about entities up to {1}", id, entities.Count);
if (entities[id].type == null)
{
continue;
}
var entity = entities[id];
// Already in the process of being despawned. This happens with same-snapshot spawn/despawn cases
if (entity.despawnSequence > 0)
{
continue;
}
// If we are spawning and despawning in same snapshot, delay actual deletion of
// entity as we need it around to be able to read the update part of the snapshot
if (m_TempSpawnList.Contains(id))
{
entity.despawnSequence = sequence; // keep until baseSequence >= despawnSequence
}
else
{
entity.Reset(); // otherwise remove right away; no further updates coming, not even in this snap
}
// Add to despawns list so we can request despawn from game later
GameDebug.Assert(!despawns.Contains(id), "Double despawn in same snaphot? {0}", id);
despawns.Add(id);
}
counters.AddSectionStats("snapShotDespawns", input.GetBitPosition2(), new Color(0.49f, 0, 0));
// Predict all active entities
for (var id = 0; id < entities.Count; id++)
{
var info = entities[id];
if (info.type == null)
{
continue;
}
// NOTE : As long as the server haven't gotten the spawn acked, it will keep sending
// delta relative to 0, so we need to check if the entity was in the spawn list to determine
// if the delta is relative to the last update or not
int baseline0Time = 0;
uint[] baseline0 = info.type.baseline;
GameDebug.Assert(baseline0 != null, "Unable to find schema baseline for type {0}", info.type.typeId);
if (haveBaseline && !m_TempSpawnList.Contains(id))
{
baseline0 = info.baselines.FindMax(baseSequence);
GameDebug.Assert(baseline0 != null, "Unable to find baseline for seq {0} for id {1}", baseSequence, id);
baseline0Time = snapshots[baseSequence].serverTime;
}
if (enableNetworkPrediction)
{
uint num_baselines = 1; // 1 because either we have schema baseline or we have a real baseline
int baseline1Time = 0;
int baseline2Time = 0;
uint[] baseline1 = null;
uint[] baseline2 = null;
if (baseSequence1 != baseSequence)
{
baseline1 = info.baselines.FindMax(baseSequence1);
if (baseline1 != null)
{
num_baselines = 2;
baseline1Time = snapshots[baseSequence1].serverTime;
}
if (baseSequence2 != baseSequence1)
{
baseline2 = info.baselines.FindMax(baseSequence2);
if (baseline2 != null)
{
num_baselines = 3;
baseline2Time = snapshots[baseSequence2].serverTime;
}
}
}
// TODO (petera) are these clears needed?
for (int i = 0, c = info.fieldsChangedPrediction.Length; i < c; ++i)
{
info.fieldsChangedPrediction[i] = 0;
}
for (int i = 0; i < NetworkConfig.maxEntitySnapshotDataSize; i++)
{
info.prediction[i] = 0;
fixed(uint *prediction = info.prediction, baseline0p = baseline0, baseline1p = baseline1, baseline2p = baseline2)
{
NetworkPrediction.PredictSnapshot(prediction, info.fieldsChangedPrediction, info.type.schema, num_baselines, (uint)baseline0Time, baseline0p, (uint)baseline1Time, baseline1p, (uint)baseline2Time, baseline2p, (uint)snapshotInfo.serverTime, info.fieldMask);
}
}
else
{
var f = info.fieldsChangedPrediction;
for (var i = 0; i < f.Length; ++i)
{
f[i] = 0;
}
for (int i = 0, c = info.type.schema.GetByteSize() / 4; i < c; ++i)
{
info.prediction[i] = baseline0[i];
}
}
}
// Read updates
var updateCount = input.ReadPackedUInt(NetworkConfig.updateCountContext);
for (var updateIndex = 0; updateIndex < updateCount; ++updateIndex)
{
var id = (int)input.ReadPackedIntDelta(previousId, NetworkConfig.idContext);
previousId = id;
var info = entities[id];
uint hash = 0;
// Copy prediction to temp buffer as we now overwrite info.prediction with fully unpacked
// state by applying incoming delta to prediction.
for (int i = 0, c = info.type.schema.GetByteSize() / 4; i < c; ++i)
{
tempSnapshotBuffer[i] = info.prediction[i];
}
DeltaReader.Read(ref input, info.type.schema, info.prediction, tempSnapshotBuffer, info.fieldsChangedPrediction, info.fieldMask, ref hash);
if (enableHashing)
{
uint hashCheck = input.ReadRawBits(32);
if (hash != hashCheck)
{
GameDebug.Log("Hash check fail for entity " + id);
if (enableNetworkPrediction)
{
GameDebug.Assert(false, "Snapshot (" + snapshotInfo.serverTime + ") " + (haveBaseline ? "Snap [BL]" : "Snap [ ]") + " " + baseSequence + " - " + baseSequence1 + " - " + baseSequence2 + ". Sche: " + schemaCount + " Spwns: " + spawnCount + " Desp: " + despawnCount + " Upd: " + updateCount);
}
else
{
GameDebug.Assert(false, "Snapshot (" + snapshotInfo.serverTime + ") " + (haveBaseline ? "Snap [BL]" : "Snap [ ]") + " " + baseSequence + ". Sche: " + schemaCount + " Spwns: " + spawnCount + " Desp: " + despawnCount + " Upd: " + updateCount);
}
}
}
}
if (enableNetworkPrediction)
{
counters.AddSectionStats("snapShotUpdatesPredict", input.GetBitPosition2(), haveBaseline ? new Color(0.09f, 0.38f, 0.93f) : Color.cyan);
}
else
{
counters.AddSectionStats("snapShotUpdatesNoPredict", input.GetBitPosition2(), haveBaseline ? new Color(0.09f, 0.38f, 0.93f) : Color.cyan);
}
uint snapshotHash = 0; // sum of hash for all (updated or not) entity snapshots
uint numEnts = 0;
for (int id = 0; id < entities.Count; id++)
{
var info = entities[id];
if (info.type == null)
{
continue;
}
// Skip despawned that have not also been spawned in this snapshot
if (info.despawnSequence > 0 && !spawns.Contains(id))
{
continue;
}
// If just spawned or if new snapshot is different from the last we deserialized,
// we need to deserialize. Otherwise just ignore; no reason to deserialize the same
// values again
int schemaSize = info.type.schema.GetByteSize();
if (info.baselines.GetSize() == 0 || NetworkUtils.MemCmp(info.prediction, 0, info.lastUpdate, 0, schemaSize) != 0)
{
var data = info.baselines.Insert(sequence);
for (int i = 0; i < schemaSize / 4; ++i)
data[i] = info.prediction[i]; }
if (sequence > info.lastUpdateSequence)
{
if (!updates.Contains(id))
{
updates.Add(id);
}
for (int i = 0; i < schemaSize / 4; ++i)
{
info.lastUpdate[i] = info.prediction[i];
}
info.lastUpdateSequence = sequence;
}
}
if (enableHashing && info.despawnSequence == 0)
{
snapshotHash += NetworkUtils.SimpleHash(info.prediction, schemaSize);
numEnts++;
}
}
unsafe void WriteSnapshot(ref RawOutputStream output)
{
Profiler.BeginSample("NetworkServer.WriteSnapshot()");
AddMessageContentFlag(NetworkMessage.Snapshot);
bool enableNetworkPrediction = network_prediction.IntValue != 0;
//bool enableHashing = debug_hashing.IntValue != 0;
// Check if the baseline from the client is too old. We keep N number of snapshots on the server
// so if the client baseline is older than that we cannot generate the snapshot. Furthermore, we require
// the client to keep the last N updates for any entity, so even though the client might have much older
// baselines for some entities we cannot guarantee it.
// TODO : Can we make this simpler?
var haveBaseline = maxSnapshotAck != 0;
if (_server.m_ServerSequence - maxSnapshotAck >= NetworkConfig.snapshotDeltaCacheSize - 2) // -2 because we want 3 baselines!
{
if (serverDebug.IntValue > 0)
{
GameDebug.Log("ServerSequence ahead of latest ack'ed snapshot by more than cache size. " + (haveBaseline ? "nobaseline" : "baseline"));
}
haveBaseline = false;
}
var baseline = haveBaseline ? maxSnapshotAck : 0;
int snapshot0Baseline = baseline;
int snapshot1Baseline = baseline;
int snapshot2Baseline = baseline;
int snapshot0BaselineClient = snapshotPackageBaseline;
int snapshot1BaselineClient = snapshotPackageBaseline;
int snapshot2BaselineClient = snapshotPackageBaseline;
if (enableNetworkPrediction && haveBaseline)
{
var end = snapshotPackageBaseline - NetworkConfig.clientAckCacheSize;
end = end < 0 ? 0 : end;
var a = snapshotPackageBaseline - 1;
while (a > end)
{
if (snapshotAcks[a % NetworkConfig.clientAckCacheSize])
{
var base1 = snapshotSeqs[a % NetworkConfig.clientAckCacheSize];
if (_server.m_ServerSequence - base1 < NetworkConfig.snapshotDeltaCacheSize - 2)
{
snapshot1Baseline = base1;
snapshot1BaselineClient = a;
snapshot2Baseline = snapshotSeqs[a % NetworkConfig.clientAckCacheSize];
snapshot2BaselineClient = a;
}
break;
}
a--;
}
a--;
while (a > end)
{
if (snapshotAcks[a % NetworkConfig.clientAckCacheSize])
{
var base2 = snapshotSeqs[a % NetworkConfig.clientAckCacheSize];
if (_server.m_ServerSequence - base2 < NetworkConfig.snapshotDeltaCacheSize - 2)
{
snapshot2Baseline = base2;
snapshot2BaselineClient = a;
}
break;
}
a--;
}
}
output.WriteRawBits(haveBaseline ? 1u : 0, 1);
output.WritePackedIntDelta(snapshot0BaselineClient, outSequence - 1, NetworkConfig.baseSequenceContext);
output.WriteRawBits(enableNetworkPrediction ? 1u : 0u, 1);
//output.WriteRawBits(enableHashing ? 1u : 0u, 1);
if (enableNetworkPrediction)
{
output.WritePackedIntDelta(haveBaseline ? snapshot1BaselineClient : 0, snapshot0BaselineClient - 1, NetworkConfig.baseSequence1Context);
output.WritePackedIntDelta(haveBaseline ? snapshot2BaselineClient : 0, snapshot1BaselineClient - 1, NetworkConfig.baseSequence2Context);
}
// NETTODO: For us serverTime == tick but network layer only cares about a growing int
output.WritePackedIntDelta(_server.serverTime, haveBaseline ? maxSnapshotTime : 0, NetworkConfig.serverTimeContext);
// NETTODO: a more generic way to send stats
var temp = _server.m_ServerSimTime * 10;
output.WriteRawBits((byte)temp, 8);
_server.m_TempTypeList.Clear();
_server.m_TempSpawnList.Clear();
_server.m_TempDespawnList.Clear();
_server.m_TempUpdateList.Clear();
_server.m_PredictionIndex = 0;
for (int id = 0, c = _server.m_Entities.Count; id < c; id++)
{
var entity = _server.m_Entities[id];
// Skip freed
if (entity.spawnSequence == 0)
{
continue;
}
bool spawnedSinceBaseline = (entity.spawnSequence > baseline);
bool despawned = (entity.despawnSequence > 0);
// Note to future self: This is a bit tricky... We consider lifetimes of entities
// re the baseline (last ack'ed, so in the past) and the snapshot we are building (now)
// There are 6 cases (S == spawn, D = despawn):
//
// --------------------------------- time ----------------------------------->
//
// BASELINE SNAPSHOT
// | |
// v v
// 1. S-------D IGNORE
// 2. S------------------D SEND DESPAWN
// 3. S-------------------------------------D SEND UPDATE
// 4. S-----D IGNORE
// 5. S-----------------D SEND SPAWN + UPDATE
// 6. S----------D INVALID (FUTURE)
//
if (despawned && entity.despawnSequence <= baseline)
{
continue; // case 1: ignore
}
if (despawned && !spawnedSinceBaseline)
{
_server.m_TempDespawnList.Add(id); // case 2: despawn
continue;
}
if (spawnedSinceBaseline && despawned)
{
continue; // case 4: ignore
}
if (spawnedSinceBaseline)
{
_server.m_TempSpawnList.Add(id); // case 5: send spawn + update
}
// case 5. and 3. fall through to here and gets updated
// Send data from latest tick
var tickToSend = _server.m_ServerSequence;
// If despawned, however, we have stopped generating updates so pick latest valid
if (despawned)
{
tickToSend = Mathf.Max(entity.updateSequence, entity.despawnSequence - 1);
}
{
var entityType = _server.m_EntityTypes[entity.typeId];
var snapshot = entity.snapshots[tickToSend];
// NOTE : As long as the server haven't gotten the spawn acked, it will keep sending
// delta relative to 0 as we cannot know if we have a valid baseline on the client or not
uint num_baselines = 1; // if there is no normal baseline, we use schema baseline so there is always one
uint *baseline0 = entityType.baseline;
int time0 = maxSnapshotTime;
if (haveBaseline && entity.spawnSequence <= maxSnapshotAck)
{
baseline0 = entity.snapshots[snapshot0Baseline].start;
}
if (enableNetworkPrediction)
{
uint *baseline1 = entityType.baseline;
uint *baseline2 = entityType.baseline;
int time1 = maxSnapshotTime;
int time2 = maxSnapshotTime;
if (haveBaseline && entity.spawnSequence <= maxSnapshotAck)
{
GameDebug.Assert(_server.m_Snapshots[snapshot0Baseline % _server.m_Snapshots.Length].serverTime == maxSnapshotTime, "serverTime == maxSnapshotTime");
GameDebug.Assert(entity.snapshots.Exists(snapshot0Baseline), "Exists(snapshot0Baseline)");
// Newly spawned entities might not have earlier baselines initially
if (snapshot1Baseline != snapshot0Baseline && entity.snapshots.Exists(snapshot1Baseline))
{
num_baselines = 2;
baseline1 = entity.snapshots[snapshot1Baseline].start;
time1 = _server.m_Snapshots[snapshot1Baseline % _server.m_Snapshots.Length].serverTime;
if (snapshot2Baseline != snapshot1Baseline && entity.snapshots.Exists(snapshot2Baseline))
{
num_baselines = 3;
baseline2 = entity.snapshots[snapshot2Baseline].start;
//time2 = entity.snapshots[snapshot2Baseline].serverTime;
time2 = _server.m_Snapshots[snapshot2Baseline % _server.m_Snapshots.Length].serverTime;
}
}
}
entity.prediction = _server.m_Prediction + _server.m_PredictionIndex;
NetworkPrediction.PredictSnapshot(entity.prediction, entity.fieldsChangedPrediction, entityType.schema, num_baselines, (uint)time0, baseline0, (uint)time1, baseline1, (uint)time2, baseline2, (uint)_server.serverTime, entity.GetFieldMask(ConnectionId));
_server.m_PredictionIndex += entityType.schema.GetByteSize() / 4;
//_server.statsProcessedOutgoing += entityType.schema.GetByteSize();
if (UnsafeUtility.MemCmp(entity.prediction, snapshot.start, entityType.schema.GetByteSize()) != 0)
{
_server.m_TempUpdateList.Add(id);
}
if (serverDebug.IntValue > 2)
{
GameDebug.Log((haveBaseline ? "Upd [BL]" : "Upd [ ]") +
"num_baselines: " + num_baselines + " serverSequence: " + tickToSend + " " +
snapshot0Baseline + "(" + snapshot0BaselineClient + "," + time0 + ") - " +
snapshot1Baseline + "(" + snapshot1BaselineClient + "," + time1 + ") - " +
snapshot2Baseline + "(" + snapshot2BaselineClient + "," + time2 + "). Sche: " +
_server.m_TempTypeList.Count + " Spwns: " + _server.m_TempSpawnList.Count + " Desp: " + _server.m_TempDespawnList.Count + " Upd: " + _server.m_TempUpdateList.Count);
}
}
else
{
var prediction = baseline0;
var fcp = entity.fieldsChangedPrediction;
for (int i = 0, l = fcp.Length; i < l; ++i)
{
fcp[i] = 0;
}
if (UnsafeUtility.MemCmp(prediction, snapshot.start, entityType.schema.GetByteSize()) != 0)
{
_server.m_TempUpdateList.Add(id);
}
if (serverDebug.IntValue > 2)
{
GameDebug.Log((haveBaseline ? "Upd [BL]" : "Upd [ ]") + snapshot0Baseline + "(" + snapshot0BaselineClient + "," + time0 + "). Sche: " + _server.m_TempTypeList.Count + " Spwns: " + _server.m_TempSpawnList.Count + " Desp: " + _server.m_TempDespawnList.Count + " Upd: " + _server.m_TempUpdateList.Count);
}
}
}
}
if (serverDebug.IntValue > 1 && (_server.m_TempSpawnList.Count > 0 || _server.m_TempDespawnList.Count > 0))
{
GameDebug.Log(ConnectionId + ": spwns: " + string.Join(",", _server.m_TempSpawnList) + " despwans: " + string.Join(",", _server.m_TempDespawnList));
}
foreach (var pair in _server.m_EntityTypes)
{
if (pair.Value.createdSequence > maxSnapshotAck)
{
_server.m_TempTypeList.Add(pair.Value);
}
}
output.WritePackedUInt((uint)_server.m_TempTypeList.Count, NetworkConfig.schemaCountContext);
foreach (var typeInfo in _server.m_TempTypeList)
{
output.WritePackedUInt(typeInfo.typeId, NetworkConfig.schemaTypeIdContext);
NetworkSchema.WriteSchema(typeInfo.schema, ref output);
GameDebug.Assert(typeInfo.baseline != null);
NetworkSchema.CopyFieldsFromBuffer(typeInfo.schema, typeInfo.baseline, ref output);
}
int previousId = 1;
output.WritePackedUInt((uint)_server.m_TempSpawnList.Count, NetworkConfig.spawnCountContext);
foreach (var id in _server.m_TempSpawnList)
{
output.WritePackedIntDelta(id, previousId, NetworkConfig.idContext);
previousId = id;
var entity = _server.m_Entities[id];
output.WritePackedUInt((uint)entity.typeId, NetworkConfig.spawnTypeIdContext);
output.WriteRawBits(entity.GetFieldMask(ConnectionId), 8);
}
output.WritePackedUInt((uint)_server.m_TempDespawnList.Count, NetworkConfig.despawnCountContext);
foreach (var id in _server.m_TempDespawnList)
{
output.WritePackedIntDelta(id, previousId, NetworkConfig.idContext);
previousId = id;
}
int numUpdates = _server.m_TempUpdateList.Count;
output.WritePackedUInt((uint)numUpdates, NetworkConfig.updateCountContext);
foreach (var id in _server.m_TempUpdateList)
{
var entity = _server.m_Entities[id];
var entityType = _server.m_EntityTypes[entity.typeId];
uint *prediction = null;
if (enableNetworkPrediction)
{
prediction = entity.prediction;
}
else
{
prediction = entityType.baseline;
if (haveBaseline && entity.spawnSequence <= maxSnapshotAck)
{
prediction = entity.snapshots[snapshot0Baseline].start;
}
}
output.WritePackedIntDelta(id, previousId, NetworkConfig.idContext);
previousId = id;
// TODO It is a mess that we have to repeat the logic about tickToSend from above here
int tickToSend = _server.m_ServerSequence;
if (entity.despawnSequence > 0)
{
tickToSend = Mathf.Max(entity.despawnSequence - 1, entity.updateSequence);
}
GameDebug.Assert(_server.m_ServerSequence - tickToSend < NetworkConfig.snapshotDeltaCacheSize);
if (!entity.snapshots.Exists(tickToSend))
{
GameDebug.Log("maxSnapAck: " + maxSnapshotAck);
GameDebug.Log("lastWritten: " + snapshotServerLastWritten);
GameDebug.Log("spawn: " + entity.spawnSequence);
GameDebug.Log("despawn: " + entity.despawnSequence);
GameDebug.Log("update: " + entity.updateSequence);
GameDebug.Log("tick: " + _server.m_ServerSequence);
GameDebug.Log("id: " + id);
GameDebug.Log("snapshots: " + entity.snapshots.ToString());
GameDebug.Log("WOULD HAVE crashed looking for " + tickToSend + " changing to " + (entity.despawnSequence - 1));
tickToSend = entity.despawnSequence - 1;
GameDebug.Assert(false, "Unable to find " + tickToSend + " in snapshots. Would update have worked?");
}
var snapshotInfo = entity.snapshots[tickToSend];
// NOTE : As long as the server haven't gotten the spawn acked, it will keep sending
// delta relative to 0 as we cannot know if we have a valid baseline on the client or not
uint entity_hash = 0;
DeltaWriter.Write(ref output, entityType.schema, snapshotInfo.start, prediction, entity.fieldsChangedPrediction, entity.GetFieldMask(ConnectionId), ref entity_hash);
}
if (!haveBaseline && serverDebug.IntValue > 0)
{
Debug.Log("Sending no-baseline snapshot. C: " + ConnectionId + " Seq: " + outSequence + " Max: " + maxSnapshotAck + " Total entities sent: " + _server.m_TempUpdateList.Count + " Type breakdown:");
//foreach (var c in _server.m_EntityTypes) {
// Debug.Log(c.Value.name + " " + c.Key + " #" + (c.Value.stats_count) + " " + (c.Value.stats_bits / 8) + " bytes");
//}
}
snapshotSeqs[outSequence % NetworkConfig.clientAckCacheSize] = _server.m_ServerSequence;
snapshotServerLastWritten = _server.m_ServerSequence;
Profiler.EndSample();
}