Comet Impact
A glowing comet spirals in from a screen edge and detonates on impact with a radial shockwave ring, a ring of converging energy particles, and a central flash. Auto-launches on a ramping cadence; click to call one down.
Build a self-contained, performant Canvas 2D visual effect in a single React + TypeScript component.
Effect: "Comet Impact".
Description: A glowing comet spirals in from a screen edge and detonates on impact with a radial shockwave ring, a ring of converging energy particles, and a central flash. Auto-launches on a ramping cadence; click to call one down.
Current settings: spiral = 1.2, trail length = 24, converge + shockwave on, hue = 200, color = Single, second hue = 320.
Tags: Canvas 2D, particles, impact, comet, pooled, click.
Requirements:
- Use requestAnimationFrame with a delta-time (dt) step, clamped to avoid jumps on tab switches.
- Render crisply: fully clear the canvas every frame (clearRect). Do NOT fake motion blur by painting a translucent background each frame, because that causes permanent 8-bit "ghost" burn-in. If you want trails, store each particle's recent positions and draw them as an explicit fading tail.
- If many short-lived particles are spawned, use an object pool (pre-allocate, reuse, swap-remove on death) to avoid GC pauses.
- Scale the backing store by devicePixelRatio (cap ~2) and handle resize.
- Pause when the tab is hidden or the canvas is off-screen; respect prefers-reduced-motion.
- Expose the listed settings as adjustable props/controls.