public Entity(World world, int id)
{
_guid = Guid.NewGuid();
_world = world;
_id = id;
_componentManager = world.ComponentManager;
_systemBits = new BitArray(32);
_componentBits = new BitArray(32);
}
public EntityBuilder(World world)
{
_world = world;
_entityManager = world.EntityManager;
_componentManager = world.ComponentManager;
}