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name: canvas-procedural-animation description: Use p5.js/canvas for local procedural character effects: particles, weather, squash/stretch, walk cycles, and environmental motion. license: MIT

Canvas Procedural Animation

Use this skill when p5.js or Canvas is used for character-supporting motion: rain, snow, leaves, feathers, ambient particles, squash/stretch, or procedural walk cycles.

Proven Pattern

p5.js runs setup once and redraws continuously through draw(). Keep animation state deterministic from time/frame values when rendering previews.

function setup() {
  createCanvas(1920, 1080);
}

function draw() {
  const t = millis() / 1000;
  clear();
  drawCharacter(width / 2, height / 2 + sin(t * 8) * 8);
}

Use For

• Particle/weather overlays.
• Environmental motion.
• Simple procedural bodies.
• Effects that do not need individually authored SVG parts.

Avoid For

• Complex facial acting where SVG/layered rig parts are easier to inspect.
• Final renders that need exact frame determinism unless the runtime exposes frame-index control.

Sources

• p5.js setup() reference: https://p5js.org/reference/p5/setup/
• p5.js draw() reference: https://p5js.org/reference/p5/draw/
• p5.js animation examples: https://p5js.org/examples/