爪哇 - 创建一组方法， [英] Java - Creating an array of methods

问题描述

我设计了一所学校正在进行的基于文本的冒险游戏。我有每一个级别设置为一个类，每个探究性区域（节点）作为适当的类中的方法。

I'm designing a text-based adventure game for a school progress. I have each "level" set up as a class, and each explorable area (node) as a method within the appropriate class.

什么是与我搞乱是code，从一个节点移动到另一个。因为每个节点被连接到其他最多四个节点，我必须重复code的极其相似的块中的每个方法

What's messing with me is the code to move from one node to another. Because each node is connected to up to four other nodes, I have to repeat an extremely similar block of code in each method.

我想preFER做的是包括在每个节点的开头方法的一个数组，像这样：

What I'd prefer to do is include an array of methods at the beginning of each node, like this:

public static void zero()
{
    ... adjacentNodes[] = {one(), two(), three(), four()};
}

然后发送数组一个通用的方法，并使其在玩家发送给正确的节点：

And then send that array to a generic method, and have it send the player to the right node:

public static void move(...[] adjacentNodes, int index)
{
    adjacentNodes[index];
}

我简化我的code，但这是一般的想法。这可能吗？

I simplified my code, but that's the general idea. Is this possible?

推荐答案

每当你想到的指针到功能，您可以通过使用适配器模式（或变化）转换为Java。这将是这样的：

Whenever you think of pointer-to-function, you translate to Java by using the Adapter pattern (or a variation). It would be something like this:

public class Node {
    ...
    public void goNorth() { ... }
    public void goSouth() { ... }
    public void goEast() { ... }
    public void goWest() { ... }

    interface MoveAction {
        void move();
    }

    private MoveAction[] moveActions = new MoveAction[] {
        new MoveAction() { public void move() { goNorth(); } },
        new MoveAction() { public void move() { goSouth(); } },
        new MoveAction() { public void move() { goEast(); } },
        new MoveAction() { public void move() { goWest(); } },
    };

    public void move(int index) {
        moveActions[i].move();
    }
}

这篇关于爪哇 - 创建一组方法，的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！