如何解决Javascript:为玩家百分比分配随机角色
假设我有这两个数组
let players = ["ryan","austin","julian","kelso","mitch","adam","dwight","edwin","connor","george"]
let roles = []
我想用随机的顺序填充角色,比如说30%的“好”字符串和70%的“坏”字符串,但总是30%的“好”角色。
example: roles: ['Bad','Bad','Good','Good']
我目前正在运行此方案,该方案随机创建一个数组,但没有“好”与“差”的百分比要求。
players: [ ]
roles: []
while (good === false || bad === false) {
roles = []
for (i = 0; i < players.length; i++) {
let randomise = Math.floor(Math.random() * 2)
if (randomise === 0) {
roles.push("Good")
innocent = true
} else {
roles.push("Bad")
traitor = true
}
};
}
无法全神贯注于如何实现目标。
解决方法
乘以3 / 10
ceil
加来确定有多少玩家必须是好玩家。在循环中,将随机的好值或坏值推入数组。但是,还要检查您是否已达到要推送的好值或坏值的限制,在这种情况下,请推送其他值
const players = ["ryan","austin","julian","kelso","mitch","adam","dwight","edwin","connor","george"]
let goodCount = Math.ceil(players.length * 3 / 10);
console.log('Need total of',goodCount,'good');
const roles = []
for (let i = 0; i < players.length; i++) {
if (goodCount === 0) {
// Rest of the array needs to be filled with bad:
roles.push('Bad'); continue;
}
if (goodCount === players.length - roles.length) {
// Rest of the array needs to be filled with good:
roles.push('Good'); goodCount--; continue;
}
if (Math.random() < 0.3) {
roles.push('Good'); goodCount--;
} else {
roles.push('Bad');
}
};
console.log(roles);
在可能的情况下,请记住使用use const
而不是let
,并记住始终在使用变量之前声明它们(例如i
循环中的for
),否则您将隐式创建全局变量,并在严格模式下引发错误。
为什么不只生成70%的“坏”和30%的“好”的数组,然后将其洗牌:
const players = ["ryan","george"];
const roles = [];
const badNum = Math.floor(0.7 * players.length);
const goodNum = players.length - badNum;
for (let i = 1; i <= players.length; i++) {
roles.push(i <= badNum ? "bad" : "good");
}
//Shuffle roles
for (let i = 0; i < roles.length; i++) {
var randomIndex = Math.floor(Math.random() * (roles.length - i)) + i;
var selection = roles[randomIndex];
var extract = roles[i];
roles[i] = selection;
roles[randomIndex] = extract;
}
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