//利用该函数，静态地从仍何存在的IControllable建立控制器
static public Controller From <T>(Existence <T> obj)
where T : class, IControllable
{
return(new Controller(
new Existence <IControllable>((IControllable)obj.Unwrap())
));
}
//load the bird onto SlingShot. The slingshot's bullet cannot be NULL!!!
//The existence simplify the implemantation. It ensures the load to change states.
public void Load(Existence <Bird> bullet)
{
//since the bullet reflects the state, this ensures call only works under unloaded state
if (!this.IsLoaded)
{
this.bullet = bullet.Unwrap();
this.bullet.physicsLock = true;
this.bullet.transform.position = positioner.position;
}
}
//为控制器绑定新的可控制对象
public void BindsTo <T>(Existence <T> obj)
where T : class, IControllable
{
this.control = (IControllable)obj.Unwrap();
}
Controller(Existence <IControllable> control)
{
this.control = control.Unwrap();
}
public ActionOnce(Existence <Action> action)
{
this.action = action.Unwrap();
}
public FnOnce(Existence <Func <R> > func)
{
this.func = func.Unwrap();
}