Starfling: A one-tap endless orbital slingshot game in a single HTML file

a slow mode, or an option to hit the brakes might be nice. or going slower as the orbit decreases. smaller orbit is harder but slower speed is easier. you just have to find the right moment

the quick bonus should not be more than one point. maybe an extra point for hitting 5 quick jumps in a row.

```javascript

   // ==UserScript==
   // @name         StarFling Spacebar
   // @namespace    https://playstarfling.com/
   // @version      2026-04-11
   // @description  Spacebar to launch and restart StarFling
   // @author       Claude Code
   // @match        https://playstarfling.com/*
   // @icon         https://www.google.com/s2/favicons?sz=64&domain=playstarfling.com
   // @grant        none
   // @run-at       document-idle
   // ==/UserScript==

   (function () {
     'use strict';

     document.addEventListener('keydown', function (e) {
       if (e.code === 'Escape') {
         e.preventDefault();
         // During play, click give-up to trigger the death/restart screen
         const giveup = document.getElementById('giveup-btn');
         if (giveup) giveup.click();
         return;
       }

       if (e.code !== 'Space') return;
       e.preventDefault();

       // If the game-over screen is visible, click retry
       const gameOver = document.getElementById('game-over');
       if (gameOver && !gameOver.classList.contains('hidden')) {
         const retry = document.getElementById('retry-btn');
         if (retry) retry.click();
         return;
       }

       // Otherwise simulate a tap on the canvas (start from menu / release orb)
       const canvas = document.getElementById('c');
       if (canvas) {
         canvas.dispatchEvent(new PointerEvent('pointerdown', {
           bubbles: true,
           clientX: window.innerWidth / 2,
           clientY: window.innerHeight / 2,
         }));
       }
     });
   })();