Cryptographically secure identification
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.sleazyfork.org/scripts/587612/1879347/Hexadecant.js
// ==UserScript==
// @name Hexadecant
// @namespace http://tampermonkey.net/
// @version 2026-05-28
// @description Cryptographically secure identification
// @author miguel0303
// @match https://*.ourworldoftext.com/binaryhexadecant
// @match https://*.ourworldoftext.com/binaryhexadecant/*
// @match https://twot.fbin.duckdns.org/binaryhexadecant
// @match https://twot.fbin.duckdns.org/binaryhexadecant/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=ourworldoftext.com
// @grant none
// @downloadURL https://update.greasyfork.org/scripts/587612/Hexadecant.user.js
// @updateURL https://update.greasyfork.org/scripts/587612/Hexadecant.meta.js
// ==/UserScript==
/* global w */
(function() {
'use strict';
/* ============================================================
1. Core 4x4 Path Renderer
============================================================ */
function draw4x4Block(ctx, x, y, width, height, mask) {
const rows = 4;
const cols = 4;
const subW = width / cols;
const subH = height / rows;
ctx.beginPath();
for (let i = 0; i < 16; i++) {
// Check if the i-th bit is set
if ((mask >> i) & 1) {
let cx = i % cols;
let cy = Math.floor(i / rows);
ctx.rect(x + (cx * subW), y + (cy * subH), subW, subH);
}
}
ctx.fill();
}
/* ============================================================
2. Patching the drawBlockChar Dispatcher
============================================================ */
if (typeof window.drawBlockChar !== 'undefined') {
const originalDrawBlockChar = window.drawBlockChar;
window.drawBlockChar = function(char_code, ctx, x, y, width, height) {
// Range Check: U+C0000 to U+CFFFF
if (char_code >= 0xC0000 && char_code <= 0xCFFFF) {
const mask = char_code - 0xC0000;
// Note: 0xCFFFF results in mask 0xFFFF (all 16 bits),
// rendering a "full" 4x4 block (solid square).
draw4x4Block(ctx, x, y, width, height, mask);
return;
}
// Fallback to original renderer for standard blocks
return originalDrawBlockChar.apply(this, arguments);
};
}
/* ============================================================
3. Update Validity Check (Required for OWOT to call drawBlockChar)
============================================================ */
if (typeof window.isValidSpecialSymbol !== 'undefined') {
const originalIsValid = window.isValidSpecialSymbol;
window.isValidSpecialSymbol = function(char_code) {
if (char_code >= 0xC0000 && char_code <= 0xCFFFF) {
return true;
}
return originalIsValid(char_code);
};
}
/* ============================================================
4. Register Chat Command
============================================================ */
if (typeof window.w !== 'undefined' &&
window.w &&
window.w.chat &&
typeof window.w.chat.registerCommand === 'function') {
window.w.chat.registerCommand("b4", function(args) {
if (!args || !args[0]) return;
let input = args[0];
let val = parseInt(input, 16);
if (!isNaN(val) && val >= 0 && val <= 0xFFFF) {
let char = String.fromCodePoint(0xC0000 + val);
if (typeof window.w.typeChar === 'function') {
window.w.typeChar(char);
}
}
}, ["hex"], "Type 4x4 block char", "FFFF");
}
/* ============================================================
5. Settings Cleanup
============================================================ */
if (typeof window.bufferLargeChars !== 'undefined') {
window.bufferLargeChars = false;
}
if (typeof window.w !== 'undefined' && window.w && typeof window.w.redraw === 'function') {
window.w.redraw();
}
})();