/// <summary>
/// Serializes all entities matching the specified filter
/// </summary>
/// <param name="filter">Filter</param>
public byte[] Serialize(EcsFilter filter)
{
IEcsGroup group = Filter(filter);
byte[] data;
using (BinaryDataWriter writer = new BinaryDataWriter())
{
foreach (IEcsArchetype archetype in group)
{
byte[] indices = archetype.Indices;
for (int i = 0; i < archetype.EntitiesCount; i++)
{
IEcsEntity entity = archetype[i];
BinaryDataWriter entityWriter = writer.TryWriteNode(sizeof(uint));
foreach (byte index in indices)
{
CompositeBinarySerializer ser = Serializer.GetSerializer(EcsTypeManager.Types[index]);
BinaryDataWriter componentWriter = entityWriter.TryWriteNode(sizeof(byte));
ser.Serialize(archetype.GetComponentPool(index).Get(i), componentWriter);
entityWriter.WriteByte(index);
componentWriter.PushNode();
}
writer.WriteUInt(entity.Id);
entityWriter.PushNode();
}
}
data = writer.GetData();
}
return(data);
}
/// <summary>
/// Get a collection of archetypes for the specified filter.
/// Each request caches the resulting set of archetypes for future use.
/// As new archetypes are added to the world, the group of archetypes is updated.
/// </summary>
/// <param name="filter">
/// A query defines a set of types of components that
/// an archetype should include
/// </param>
/// <returns>Archetypes group</returns>
public IEcsGroup Filter(EcsFilter filter)
{
int version = _archetypeManager.ArchetypeCount - 1;
if (_groups.TryGetValue(filter, out EcsGroup group))
{
if (group.Version >= version)
{
return(group);
}
}
byte[] all = filter.All?.ToArray();
byte[] any = filter.Any?.ToArray();
byte[] none = filter.None?.ToArray();
if (group != null)
{
group.Update(version, GetArchetypes(all, any, none, group.Version));
return(group);
}
group = new EcsGroup(version, GetArchetypes(all, any, none, 0));
_groups.Add(filter.Clone(), group);
return(group);
}
/// <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);
}
