反推游戏经验公式，表示一个关卡需要多少经验

Question

我有一个公式，我可以根据他们有多少经验来计算我的游戏的角色级别，如下所示：

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const calculateLevel = experience => {
    return ((Math.sqrt(625+100 * experience)-25) / 50);
}

console.log("50 XP is Level: " + calculateLevel(50));
console.log("150 XP is Level: " + calculateLevel(150));
console.log("659 XP is Level: " + calculateLevel(659));
console.log("3268 XP is Level: " + calculateLevel(3268));

​

但是，我如何才能逆向工程，并计算出他们有多少经验，只使用他们的水平？

Answer 1

因此，您需要还原指定的函数：

y = (sqrt(625 + 100 * x) - 25)/50 =>
x = ((50 * y + 25)^2 - 625) / 100

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const calculateExperience = level => {
    return (Math.pow(50 * level + 25, 2) - 625) / 100;
}

console.log("Level 1 is Experience: " + calculate_experience(1));
console.log("Level 2 is Experience: " + calculate_experience(2));

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