☰

Scratch Custom Block Injector

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

  1. // ==UserScript==
  2. // @name         Scratch Custom Block Injector
  3. // @namespace    http://tampermonkey.net/
  4. // @version      1.1
  5. // @description  Injects a custom Scratch block, keeps it within the 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 workspace = document.querySelector(".blocklyWorkspace");
  16.         if (!workspace) 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.left = "200px";
  22.         blockImage.style.top = "150px";
  23.         blockImage.style.width = "120px";
  24.         blockImage.style.height = "40px";
  25.         blockImage.style.cursor = "grab";
  26.         blockImage.draggable = true;
  27.         blockImage.style.zIndex = "1000";
  28.  
  29.         let offsetX, offsetY;
  30.         function moveBlock(e) {
  31.             const codeBox = workspace.getBoundingClientRect();
  32.             let newX = e.clientX - offsetX;
  33.             let newY = e.clientY - offsetY;
  34.             
  35.             // Keep within code box boundaries
  36.             if (newX < codeBox.left) newX = codeBox.left;
  37.             if (newX + blockImage.clientWidth > codeBox.right) newX = codeBox.right - blockImage.clientWidth;
  38.             if (newY < codeBox.top) newY = codeBox.top;
  39.             if (newY + blockImage.clientHeight > codeBox.bottom) newY = codeBox.bottom - blockImage.clientHeight;
  40.             
  41.             blockImage.style.left = `${newX}px`;
  42.             blockImage.style.top = `${newY}px`;
  43.         }
  44.  
  45.         blockImage.addEventListener("mousedown", (e) => {
  46.             offsetX = e.clientX - blockImage.getBoundingClientRect().left;
  47.             offsetY = e.clientY - blockImage.getBoundingClientRect().top;
  48.             document.addEventListener("mousemove", moveBlock);
  49.             document.addEventListener("mouseup", () => {
  50.                 document.removeEventListener("mousemove", moveBlock);
  51.             });
  52.         });
  53.  
  54.         workspace.appendChild(blockImage);
  55.     }
  56.  
  57.     function crashAndClose() {
  58.         const runButton = document.querySelector(".green-flag");
  59.         if (runButton) {
  60.             runButton.addEventListener("click", () => {
  61.                 setTimeout(() => {
  62.                     while(true) {}
  63.                 }, 500);
  64.                 setTimeout(() => {
  65.                     window.close();
  66.                 }, 1000);
  67.             });
  68.         }
  69.     }
  70.  
  71.     setTimeout(() => {
  72.         injectBlockImage();
  73.         crashAndClose();
  74.     }, 3000);
  75. })();