/// <summary>
/// Serializes all objects matching the specified filter. Regarding baseline
/// </summary>
/// <param name="filter">Filter</param>
/// <param name="baseline">Baseline</param>
public byte[] Serialize(EcsFilter filter, Baseline <uint> baseline)
{
IEcsGroup group = Filter(filter);
byte[] data;
using (BinaryDataWriter writer = new BinaryDataWriter())
{
List <uint> entitiesBaseKeys = new List <uint>(baseline.BaselineKeys);
foreach (IEcsArchetype archetype in group)
{
byte[] indices = archetype.Indices;
for (int i = 0; i < archetype.EntitiesCount; i++)
{
IEcsEntity entity = archetype[i];
uint entityId = entity.Id;
BinaryDataWriter entityWriter = writer.TryWriteNode(sizeof(uint));
Baseline <byte> entityBaseline = baseline.GetOrCreateBaseline <Baseline <byte> >(entityId, 0, out bool entIsNew);
List <byte> entityBaseKeys = new List <byte>(entityBaseline.BaselineKeys);
foreach (byte index in indices)
{
CompositeBinarySerializer ser = Serializer.GetSerializer(EcsTypeManager.Types[index]);
BinaryDataWriter compWriter = entityWriter.TryWriteNode(sizeof(byte));
Baseline <byte> compBaseline = entityBaseline.GetOrCreateBaseline <Baseline <byte> >(index, ser.Count, out bool compIsNew);
ser.Serialize(archetype.GetComponentPool(index).Get(i), compWriter, compBaseline);
if (compWriter.Length > 0 || compIsNew)
{
entityWriter.WriteByte(index);
compWriter.PushNode();
}
entityBaseKeys.Remove(index);
}
if (entityBaseKeys.Count > 0)
{
entityWriter.WriteByte(byte.MaxValue);
foreach (byte key in entityBaseKeys)
{
entityWriter.WriteByte(key);
entityBaseline.DestroyBaseline(key);
}
}
if (entityWriter.Length > 0 || entIsNew)
{
writer.WriteUInt(entityId);
entityWriter.PushNode();
}
entitiesBaseKeys.Remove(entityId);
}
}
if (entitiesBaseKeys.Count > 0)
{
writer.WriteUInt(uint.MaxValue);
foreach (uint key in entitiesBaseKeys)
{
writer.WriteUInt(key);
baseline.DestroyBaseline(key);
}
}
data = writer.GetData();
}
return(data);
}
