Shield Parry
A hex energy shield holds the center while bolts streak in from every edge. Each hit is blocked with a bright directional arc, a ripple across the shield, and sparks that ricochet away. Click to send a bolt from your pointer and trigger a block.
Build a self-contained, performant Canvas 2D visual effect in a single React + TypeScript component.
Effect: "Shield Parry".
Description: A hex energy shield holds the center while bolts streak in from every edge. Each hit is blocked with a bright directional arc, a ripple across the shield, and sparks that ricochet away. Click to send a bolt from your pointer and trigger a block.
Current settings: incoming rate = 1, bolt speed = 1, shield size = 1, sparks = 20, color = Dual, hue = 205, second hue = 40.
Tags: Canvas 2D, shield, click, pooled, additive.
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.