private World(ImmutableDictionary <long, Entity> entities, SystemManager systemManager)
{
_entities = entities;
_systemManager = systemManager;
}
public WorldBuilder(World previousWorld, ImmutableDictionary <long, Entity> entities, SystemManager systemManager)
{
_previousWorld = previousWorld;
_entities = entities.ToBuilder();
_systemManager = systemManager;
}
public World(SystemManager systemManager)
{
_entities = ImmutableDictionary <long, Entity> .Empty;
_systemManager = systemManager;
}