On joining any room on 70s.neader.com, auto-injects the Screen-In-Center and turnStyles scripts — identical to clicking the two bookmarklets.

auto-screen-center-and-turnstyles

// ==UserScript==
// @name         70s.neader Auto Center-Screen + turnStyles
// @namespace    https://github.com/vdeemann
// @version      2.0.0
// @description  On joining any room on 70s.neader.com, auto-injects the Screen-In-Center and turnStyles scripts — identical to clicking the two bookmarklets.
// @match        https://70s.neader.com/*
// @run-at       document-idle
// @grant        none
// ==/UserScript==

(function () {
  'use strict';

  // Flip to true to show a small "auto-enable fired" toast + console logs.
  const DEBUG = false;

  function log(...a) { if (DEBUG) console.log('[auto-enable]', ...a); }

  // --- The two features. Each = the bookmarklet's action (inject a script once). ---
  function enableScreenInCenter() {
    if (document.getElementById('screenthingScript')) return; // already injected
    const s = document.createElement('script');
    s.id = 'screenthingScript';
    s.type = 'text/javascript';
    s.src = 'https://thompsn.com/turntable/centerscreen/screenthing.js?v=1.1';
    document.body.appendChild(s);
    log('injected Screen In Center');
  }

  function enableTurnstyles() {
    if (document.getElementById('turnstylesScript')) return; // already injected
    const s = document.createElement('script');
    s.id = 'turnstylesScript';
    s.type = 'text/javascript';
    s.src = 'https://ts.pixelcrisis.co/browser.js?' + Math.random();
    document.body.appendChild(s);
    log('injected turnStyles');
  }

  // --- Are we inside a room yet? (room canvas or the chat input both prove it) ---
  function isInRoom() {
    return !!(
      document.querySelector('canvas.room-renderer') ||
      document.querySelector('input[placeholder*="message" i]')
    );
  }

  // --- Wait for the room, inject both once, then stop. Cheap 1s poll, no observers. ---
  let done = false;
  function tryEnable() {
    if (done || !isInRoom()) return;
    done = true;
    clearInterval(poll);
    // brief settle so screenthing acts on a fully-rendered room (like a manual click)
    setTimeout(() => {
      enableScreenInCenter();
      enableTurnstyles();
      toast();
      log('done');
    }, 600);
  }

  const poll = setInterval(tryEnable, 1000);
  tryEnable();

  // --- Optional confirmation toast (only when DEBUG) ---
  function toast() {
    if (!DEBUG) return;
    const t = document.createElement('div');
    t.textContent = 'auto-enable fired';
    t.style.cssText =
      'position:fixed;top:12px;left:62%;transform:translateX(-50%);z-index:999999;' +
      'background:#1db954;color:#fff;font:13px/1.4 system-ui,sans-serif;' +
      'padding:8px 14px;border-radius:6px;box-shadow:0 2px 8px rgba(0,0,0,.4);' +
      'pointer-events:none;';
    document.body.appendChild(t);
    setTimeout(() => t.remove(), 2500);
  }
})();