UE中委托的使用很广泛,许多Event的触发都有对应的虚函数和委托,虚函数不用讲,只能在派生类中使用,而委托可以在别的类或者蓝图中使用,就应用范围而言,委托的使用更灵活.以AActor的 /** * Event when this actor overlaps another actor, for example a player walking into a trigger. * For events when objects have a blocking collision, for ex