Survev Randomiser

make survev.io unpredictable
Ask a question, post a review, or report the script.
Wrap lines
// ==UserScript==
// @name         Survev Randomiser
// @namespace    https://survev.io/
// @version      1.0.0
// @description  make survev.io unpredictable
// @author       piesimp
// @match        *://survev.io/*
// @match        *://*.survev.io/*
// @run-at       document-start
// @grant        none
// ==/UserScript==

(() => {
  "use strict";

  const K = "survev-randomiser",
    L = {
      off: [0, "No randomization. Everything stays normal."],
      low: [
        0.25,
        "About 25% of guns/ammo get swapped. Most items look correct.",
      ],
      medium: [0.5, "About half are randomized. Common mislabels."],
      high: [0.75, "Around 75% randomized. Hard to trust item names/icons."],
      chaos: [1, "Attempts to randomize everything. Full confusion mode."],
    };

  let c = { level: "medium", seed: "" + Date.now() };
  try {
    Object.assign(c, JSON.parse(localStorage.getItem(K) || "{}"));
  } catch {}

  const r = ((s) => {
      let h = 2166136261 >>> 0;
      for (let i = 0; i < s.length; i++)
        h = Math.imul(h ^ s.charCodeAt(i), 16777619);
      return () => {
        h += 0x6d2b79f5;
        let t = Math.imul(h ^ (h >>> 15), h | 1);
        t ^= t + Math.imul(t ^ (t >>> 7), t | 61);
        return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
      };
    })(c.seed),
    S = (a) => {
      for (let i = a.length - 1; i > 0; i--) {
        let j = Math.floor(r() * (i + 1));
        [a[i], a[j]] = [a[j], a[i]];
      }
      return a;
    };

  const ui = () => {
    let n = document.getElementById("news-block");
    if (!n) return;

    n.innerHTML = `<div id=news><h3 class=news-header style="color:#ffc400!important;margin-bottom:15px">Survev Randomiser</h3><div style="display:flex;flex-direction:column;gap:15px;padding:10px"><div style="display:flex;align-items:center;justify-content:space-between"><span style="font-weight:bold;font-size:14px">Intensity:</span><select id=sr-lvl style="background:#222;color:#fff;border:1px solid #555;padding:5px;border-radius:4px;cursor:pointer">${Object.keys(
      L,
    )
      .map(
        (x) =>
          `<option value=${x} ${c.level == x ? "selected" : ""}>${x.toUpperCase()}</option>`,
      )
      .join(
        "",
      )}</select></div><div id=sr-desc style="font-size:12px;color:#ccc;line-height:1.4;min-height:40px;background:rgba(0,0,0,.2);padding:8px;border-radius:4px">${L[c.level][1]}</div><button id=sr-btn style="padding:10px;background:#ffc400;color:#000;border:none;font-weight:bold;border-radius:4px;cursor:pointer;text-transform:uppercase">Apply & Reload</button></div></div>`;

    let s = document.getElementById("sr-lvl"),
      d = document.getElementById("sr-desc");

    s.onchange = () => (d.innerText = L[s.value][1]);

    document.getElementById("sr-btn").onclick = () => {
      localStorage.setItem(
        K,
        JSON.stringify({
          level: s.value,
          seed: "" + Date.now(),
        }),
      );
      location.reload();
    };
  };

  (async () => {
    let i = setInterval(() => {
        if (document.getElementById("news-block")) {
          ui();
          clearInterval(i);
        }
      }, 100),
      m = [...document.querySelectorAll('script[type="module"]')].find(
        (x) => x.src && !/turnstile|captcha/i.test(x.src),
      )?.src;

    if (!m) return;

    try {
      let t = await fetch(m).then((r) => r.text()),
        p = t.match(/from\s*["']\.\/([^"']+)["']/)?.[1];

      if (!p) return;

      let o = await import(new URL(p, m).href),
        d = o?.H;

      if (!d) return;

      let g = [],
        a = [];

      for (let k in d)
        d[k]?.type == "gun" && d[k].lootImg
          ? g.push(k)
          : d[k]?.type == "ammo" && d[k].lootImg && a.push(k);

      let v = L[c.level][0],
        M = (l) => {
          let m = {};
          l.forEach((x) => (m[x] = x));

          if (v <= 0) return m;

          let s = S([...l]).slice(0, Math.max(2, Math.floor(l.length * v))),
            p = [...s];

          p.push(p.shift());

          s.forEach((x, i) => (m[x] = p[i]));

          return m;
        };

      let f = { ...M(g), ...M(a) },
        snap = {};

      [...g, ...a].forEach(
        (x) =>
          (snap[x] = {
            n: d[x].name,
            i: JSON.parse(JSON.stringify(d[x].lootImg)),
          }),
      );

      for (let x in f) {
        let t = snap[f[x]];

        d[x].name = t.n;
        d[x].lootImg = JSON.parse(JSON.stringify(t.i));
      }

      if (o.t?.prototype) {
        let old = o.t.prototype.translate,
          k = Object.keys(f).sort((a, b) => b.length - a.length);

        o.t.prototype.translate = function (x) {
          if (typeof x != "string") return old.apply(this, arguments);

          for (let p of ["game-hud-", "game-"])
            if (x.startsWith(p)) {
              let t = x.slice(p.length);

              for (let i of k)
                if (t == i || t.startsWith(i + "-"))
                  return old.call(this, p + f[i] + t.slice(i.length));
            }

          return old.call(this, x);
        };
      }
    } catch (e) {
      console.error("SR Error:", e);
    }
  })();
})();