Flashlight

Press L to power main flashlight. Press X, ESC, B, N, or Q to toggle light OFF/ON while L remains active. Ignores bottom center menu bar.
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// ==UserScript==
// @name         Flashlight
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  Press L to power main flashlight. Press X, ESC, B, N, or Q to toggle light OFF/ON while L remains active. Ignores bottom center menu bar.
// @author       Qwerty Matthew
// @license      MIT
// @match        *://*.minefun.io/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let masterOn = false;
    let secondaryActive = true;
    let flashlightOverlay = null;

    function createFlashlightOverlay() {
        if (flashlightOverlay) return;

        flashlightOverlay = document.createElement('div');
        flashlightOverlay.id = 'flashlight-ambient-overlay';

        flashlightOverlay.style = `
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            pointer-events: none;
            z-index: 999999;
            backdrop-filter: brightness(1.8) contrast(0.85) saturate(1.1);
            -webkit-backdrop-filter: brightness(1.8) contrast(0.85) saturate(1.1);
            /* Keep bottom-left (345px) and bottom-right (345px) illuminated, clip center bottom by 58px */
            clip-path: polygon(
                0 0, 
                100% 0, 
                100% 100%, 
                calc(100% - 345px) 100%, 
                calc(100% - 345px) calc(100% - 58px), 
                345px calc(100% - 58px), 
                345px 100%, 
                0 100%
            );
            opacity: 0;
            transition: opacity 0.15s ease-in-out;
        `;

        document.body.appendChild(flashlightOverlay);
    }

    function updateOverlayState() {
        if (masterOn && secondaryActive) {
            flashlightOverlay.style.opacity = '1';
        } else {
            flashlightOverlay.style.opacity = '0';
        }
    }

    function toggleMaster() {
        masterOn = !masterOn;
        if (masterOn) {
            secondaryActive = true;
        }
        updateOverlayState();
    }

    function toggleSecondary() {
        if (!masterOn) return;
        secondaryActive = !secondaryActive;
        updateOverlayState();
    }

    document.addEventListener('keydown', (e) => {
        if (e.repeat) return;

        const active = document.activeElement;
        if (active.tagName === 'INPUT' || active.tagName === 'TEXTAREA' || active.isContentEditable) return;

        if (e.code === 'KeyL') {
            toggleMaster();
        } else if (
            e.code === 'KeyX' ||
            e.code === 'Escape' ||
            e.code === 'KeyB' ||
            e.code === 'KeyN' ||
            e.code === 'KeyQ'
        ) {
            toggleSecondary();
        }
    });

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', createFlashlightOverlay);
    } else {
        createFlashlightOverlay();
    }
})();