protected virtual int InitializeComponent(int entityId)
{
var id = freeComponents.Take();
// Make sure this component is not duplicated.
if (componentToEntityMap.ContainsKey(id))
{
throw new InvalidOperationException($"duplicated internal component id {id}");
}
aliveComponents.Add(id);
componentToEntityMap.Add(id, entityId);
// Create events.
deletedEvents.Create(id);
// Delete the component when entity is deleted.
entities.Deleted.Subscribe(entityId, delegate
{
if (!Alive(id))
{
return;
}
Delete(id);
});
return(id);
}
public bool Create(int id, uint annotation = 0u, string tag = "")
{
if (Alive(id))
{
return(false);
}
// Add to lookups.
entityAnnotations[id] = annotation;
entityTags[id] = tag;
aliveEntities.Add(id);
// Create events.
deletedEvents.Create(id);
unpairedFromChildEvents.Create(id);
unpairedFromParentEvents.Create(id);
madeParentOfEvents.Create(id);
madeChildOfEvents.Create(id);
return(true);
}