嵌套函数会降低性能吗？

Question

我有一个班级UglyLobster 在一个横向卷轴类型的游戏中使用了 AS3 中的人工智能。 UglyLobster 是一个很大程度上是自我操作的类，它根据环境确定它接下来要做什么。在构建这种人工智能时，我发现最简单的解决方案是使用嵌套函数。

但是，我不确定嵌套函数是否会影响性能并导致拖累。这个UglyLobster不限于一个实例；许多将同时运行。我添加了代码来显示我正在尝试做的事情。

public class UglyLobster extends Mob {

    //these vars determine what the UglyLobster will do next
    public var behavior = "aggro"
    private var behaviorStep:int = 1

    public function UglyLobster() {
        addEventListener(Event.ENTER_FRAME,performBehavior)
    }

    public function performBehavior(e) {
        if (behavior == "aggro") {
            aggro()
        }
        if (behavior == "tranq") {
            tranq()
        }
    }

    private function aggro() {
        //it is necessary to have multiple steps.
        //in step 1, the Lobster could bare its lobster fangs,
        //then in step 2, crawl toward a point
        //and in step 3, pinch somebody
        if (behaviorStep == 1) {
            step1()
        }
        if (behaviorStep == 2) {
            step2()
        }
        if (behaviorStep == 3) {
            step3()
        }
        function step1() {
            if (someCondition) {
                behaviorStep = 2
            } else {
                //do whatever happens in step1
            }
        }
        function step2() {
            if (someOtherCondition) {
                behaviorStep = 3
            } else {
                //do whatever happens in step2
            }
        }
        function step3() {
            if (anotherCondition) {
                behaviorStep = 1
            } else {
                behavior = "tranq"
            }
        }
    }

    private function tranq() {
        //do nothing
    }

}

嵌套函数是完成任务的一种节省内存的方式吗？如果没有，您将如何为UglyLobster 设置人工智能？例子真的很有帮助

Answer 1

即使我不喜欢这种设计，并且可能正如 Jason 所建议的那样，存在架构设计问题，我认为没有必要嵌套函数。

private function aggro() {
    //it is necessary to have multiple steps.
    //in step 1, the Lobster could bare its lobster fangs,
    //then in step 2, crawl toward a point
    //and in step 3, pinch somebody
    if (behaviorStep == 1) {
        step1()
    }
    if (behaviorStep == 2) {
        step2()
    }
    if (behaviorStep == 3) {
        step3()
    }
}

private function step1() {
    if (someCondition) {
         behaviorStep = 2
    } else {
         //do whatever happens in step1
    }
}

private function step2() {
        if (someOtherCondition) {
            behaviorStep = 3
        } else {
            //do whatever happens in step2
        }
 }

private function step3() {
        if (anotherCondition) {
            behaviorStep = 1
        } else {
            behavior = "tranq"
        }
}