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Scratch Custom Block Injector

Injects a custom Scratch block, keeps it within the exact code box, and crashes the project

  1. // ==UserScript==
  2. // @name         Scratch Custom Block Injector
  3. // @namespace    http://tampermonkey.net/
  4. // @version      1.2
  5. // @description  Injects a custom Scratch block, keeps it within the exact code box, and crashes the project
  6. // @author       You
  7. // @match        *://scratch.mit.edu/projects/editor/*
  8. // @grant        none
  9. // ==/UserScript==
  10.  
  11. (function() {
  12.     'use strict';
  13.  
  14.     function injectBlockImage() {
  15.         const codeBox = document.querySelector(".blocklyMainBackground");
  16.         if (!codeBox) return;
  17.  
  18.         let blockImage = document.createElement("img");
  19.         blockImage.src = "https://i.ibb.co/MD0wbSkd/Untitled502-20250203231330.png";
  20.         blockImage.style.position = "absolute";
  21.         blockImage.style.width = "120px";
  22.         blockImage.style.height = "40px";
  23.         blockImage.style.cursor = "grab";
  24.         blockImage.style.zIndex = "1000";
  25.  
  26.         const codeBoxRect = codeBox.getBoundingClientRect();
  27.         blockImage.style.left = `${codeBoxRect.left + 50}px`;
  28.         blockImage.style.top = `${codeBoxRect.top + 50}px`;
  29.  
  30.         let offsetX, offsetY;
  31.         function moveBlock(e) {
  32.             let newX = e.clientX - offsetX;
  33.             let newY = e.clientY - offsetY;
  34.             
  35.             if (newX < codeBoxRect.left) newX = codeBoxRect.left;
  36.             if (newX + blockImage.clientWidth > codeBoxRect.right) newX = codeBoxRect.right - blockImage.clientWidth;
  37.             if (newY < codeBoxRect.top) newY = codeBoxRect.top;
  38.             if (newY + blockImage.clientHeight > codeBoxRect.bottom) newY = codeBoxRect.bottom - blockImage.clientHeight;
  39.             
  40.             blockImage.style.left = `${newX}px`;
  41.             blockImage.style.top = `${newY}px`;
  42.         }
  43.  
  44.         blockImage.addEventListener("mousedown", (e) => {
  45.             offsetX = e.clientX - blockImage.getBoundingClientRect().left;
  46.             offsetY = e.clientY - blockImage.getBoundingClientRect().top;
  47.             document.addEventListener("mousemove", moveBlock);
  48.             document.addEventListener("mouseup", () => {
  49.                 document.removeEventListener("mousemove", moveBlock);
  50.             });
  51.         });
  52.  
  53.         document.body.appendChild(blockImage);
  54.     }
  55.  
  56.     function crashAndClose() {
  57.         const runButton = document.querySelector(".green-flag");
  58.         if (runButton) {
  59.             runButton.addEventListener("click", () => {
  60.                 setTimeout(() => {
  61.                     while(true) {}
  62.                 }, 500);
  63.                 setTimeout(() => {
  64.                     window.close();
  65.                 }, 1000);
  66.             });
  67.         }
  68.     }
  69.  
  70.     setTimeout(() => {
  71.         injectBlockImage();
  72.         crashAndClose();
  73.     }, 3000);
  74. })();