private static bool HasSameComponents(RevolutionChunk target, IReadOnlyList <Type> components)
{
var matches = 0;
if (target.ComponentTypes.Length != components.Count)
{
return(false);
}
for (var i = 0; i != target.ComponentTypes.Length; i++)
{
for (var y = 0; y != components.Count; y++)
{
if (target.ComponentTypes[i] == components[y])
{
matches++;
if (matches > target.ComponentTypes.Length)
{
goto end;
}
}
}
}
if (matches == target.ComponentTypes.Length)
{
return(true);
}
end:
return(false);
}
public RevolutionEntity CreateEntityInChunk(RevolutionChunk chunk)
{
lastEntity = new RawEntity(lastEntity.Id + 1);
chunk.AddEntity(lastEntity);
entityToChunk[lastEntity] = chunk;
return(new RevolutionEntity(this, lastEntity));
}
public RevolutionWorld(int entityInitialCapacity = 0)
{
lastEntity = default;
Chunks = new RevolutionChunk[1];
// the first chunk has no component
Chunks[0] = new RevolutionChunk(new Type[0]);
entityToChunk = new Dictionary <RawEntity, RevolutionChunk>(entityInitialCapacity);
identifierToEntity = new TwoWayDictionary <EntityIdentifier, RawEntity>(entityInitialCapacity);
}
private RevolutionChunk GetOrCreateChunk(IReadOnlyList <Type> components)
{
var currentChunk = default(RevolutionChunk);
foreach (var chunk in Chunks)
{
if (HasSameComponents(chunk, components))
{
currentChunk = chunk;
break;
}
}
// no chunk found, create it
if (currentChunk == null)
{
currentChunk = new RevolutionChunk(components);
Array.Resize(ref Chunks, Chunks.Length + 1);
Chunks[^ 1] = currentChunk;
public RevolutionEntity CreateIdentEntityInChunk <TIdentity>(TIdentity identity, RevolutionChunk chunk)
{
var ent = CreateEntityInChunk(chunk);
var id = new EntityIdentifier();
id.Set(identity);
identifierToEntity.Set(id, ent.Raw);
return(ent);
}