protected virtual int InitializeComponent(int entityId)
{
var id = freeComponents.Take();
// Make sure this component is not duplicated.
if (componentToEntityMap.ContainsKey(id))
{
throw new InvalidOperationException($"duplicated internal component id {id}");
}
aliveComponents.Add(id);
componentToEntityMap.Add(id, entityId);
// Create events.
deletedEvents.Create(id);
// Delete the component when entity is deleted.
entities.Deleted.Subscribe(entityId, delegate
{
if (!Alive(id))
{
return;
}
Delete(id);
});
return(id);
}
public int Create(uint annotation = 0u, string tag = "")
{
var id = freeEntities.Take();
if (!Create(id, annotation, tag))
{
throw new InvalidOperationException($"duplicated internal entity id {id}");
}
return(id);
}
public void TakeTest()
{
var idc = 0;
var list = new FreeList <int>(() => idc++);
for (var i = 0; i < 10; i++)
{
Assert.Equal(i, list.Take());
}
}
public void ReturnTest()
{
var idc = 0;
var list = new FreeList <int>(() => idc++);
Assert.Equal(0, list.Take());
Assert.Equal(1, list.Take());
Assert.Equal(2, list.Take());
Assert.Equal(3, list.Take());
Assert.Equal(4, list.Take());
Assert.Equal(5, list.Take());
list.Return(2);
list.Return(3);
Assert.Equal(3, list.Take());
Assert.Equal(2, list.Take());
Assert.Equal(6, list.Take());
}