ios - Spritekit - 如何计算两个节点之间的距离？ [英] ios - Spritekit - How to calculate the distance between two nodes?

问题描述

屏幕上有两个sknodes。计算距离的最佳方法是什么（'作为乌鸦飞行的距离类型，我不需要矢量等）？

I have two sknodes on the screen. What is the best way to calculate the distance ('as the crow flies' type of distance, I don't need a vector etc)?

我有一个谷歌并在这里搜索，找不到涵盖这个的东西（关于精灵工具包的stackoverflow上没有太多线程）

I've had a google and search on here and can't find something that covers this (there aren't too many threads on stackoverflow about sprite kit)

推荐答案

这是一个能为你做的功能。这来自Apple的Adventure示例代码：

Here's a function that will do it for you. This is from an Apple's Adventure example code:

CGFloat SDistanceBetweenPoints(CGPoint first, CGPoint second) {
    return hypotf(second.x - first.x, second.y - first.y);
}

要从您的代码中调用此函数：

To call this function from your code:

CGFloat distance = SDistanceBetweenPoints(nodeA.position, nodeB.position);

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