r3f-damage-numbers - SKILL.md Agent Skill

name: r3f-damage-numbers description: Display React Three Fiber floating damage numbers that animate upward and fade out, with support for critical hits.

Damage Numbers

Display floating damage numbers that animate upward and fade out, with support for critical hits.

Technique

Use Drei's Html component to render DOM elements in 3D space. Manage damage numbers in React state, spawn them with random positions, and use CSS animations for the floating/fading effect.

Key Concepts

Html from @react-three/drei for DOM-in-3D rendering
Track damages in state with unique IDs for keying
Use setTimeout to remove damages after animation completes
CSS keyframe animations for movement and opacity
Critical hits can have different styling (larger text, "CRIT" label)

Usage

<Html center position={[damage.x, damage.y, 0]}>
  <div style={{ animation: 'damageNumber 1.3s ease-out forwards' }}>{damage.value}</div>
</Html>

This skill is part of verekia's r3f-gamedev.