math-tasks/assets/items/asteroids/CLAUDE.md

Asteroid Asset Generation Rules

Style overview

The set has two tiers:

Single-piece asteroids (asteroid1–asteroid9) — each is a standalone rock with its own unique shape and crack color. They serve as style sources for multi-piece variants.

Multi-piece asteroids (asteroid10–asteroid14) — compact clusters of 3 pieces tightly pressed together. Each one inherits its style from a corresponding single-piece asteroid.

Style map

File	Shape type	Crack color	Style source
asteroid1	round sphere	orange/amber	—
asteroid3	flat angular boulder	red glowing	—
asteroid5	tall elongated shard	purple/magenta	—
asteroid7	flat horizontal disc	pink/purple	—
asteroid9	tall spire with spikes	cyan/blue	—
asteroid11	3-piece cluster	red (from asteroid3)	asteroid3
asteroid12	3-piece cluster	orange/golden (from asteroid1)	asteroid1 — ideal composition reference
asteroid13	3-piece cluster	purple/magenta (from asteroid5)	asteroid5

Rules for generating new multi-piece asteroids

Composition

• Always 3 pieces of different sizes tightly pressed together
• Pieces must touch each other — no gaps, no space between them
• The cluster must read as one compact object, not a scattered group
• Vary the arrangement: triangle, stacked, side-by-side — avoid repeating the same layout

Style

• Use --ref with the corresponding single-piece asteroid (not asteroid12)
• Do not use --template illustration — it makes cracks too prominent and overrides the source style
• Use the default --template general
• Crack color, surface texture, and painting style must come from the reference

What to avoid

• No floating debris or separate small fragments
• No explosion effects
• No atmospheric glow, energy bursts, or lightning spread outward from the object
• No changing the crack color relative to the reference (e.g. if the ref has red cracks, the output must have red cracks — not orange, not purple)

Generation command pattern

node .claude/skills/gen-image/banatie-gen.mjs \
  --prompt "three dark rocky asteroid pieces of different sizes tightly pressed together, <crack description from ref>, painterly art style, white background, compact cluster no gaps between stones, varied shapes and sizes" \
  --output assets/items/asteroids/asteroidN.png \
  --ref assets/items/asteroids/asteroidX.png

Where asteroidX is the style source from the table above.

Approved reference for composition

asteroid12.png is the approved example of correct multi-piece composition: compact, no gaps, pieces vary in size, reads as one unit. Use it as a visual benchmark when evaluating new generations — but do NOT add it as --ref alongside the style source, as it will pull the style toward orange/golden.