Cosmos Click Minigame HTML

The 'toy-cosmos.html' file is a self-contained HTML document that utilizes the Canvas API to render a dynamic and interactive starry sky. It includes several features: background stars that gently twinkle, shooting stars that traverse the screen, and user-interactive elements. Users can click on the canvas to place stars, with a limit of 40. Double-clicking on a star removes it. Holding the mouse button down allows users to 'paint' nebulas, which are rendered as soft, colored gradients. The code also draws lines between nearby user-placed stars, creating a constellation effect that glows when the mouse is near. The UI provides feedback on the star count and includes a 'Clear all' button with a confirmation step. The visual effects are achieved through various drawing techniques, including radial and linear gradients, and animations driven by a main render loop.