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art-pipeline-nano-banana

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Use nano banana (Gemini CLI) to generate references and inputs for the deterministic 2.5D pipeline

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How to use this skill

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/generation/art-pipeline/SKILL.md

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Skill: Art Pipeline (nano banana as input generator)

Objective

Use nano banana to generate inputs (concept refs, mood boards, modular parts) while keeping final game assets deterministic via templates + palettes.

This repo does not accept “AI images dropped directly into game/assets” as final art.

What nano banana is allowed for

  • Mood boards for biomes (to derive palettes)
  • Concept sheets for props/characters (to guide modeling)
  • UI style exploration (boxes, typography, icon language)

Where outputs must go

All generated images must land under:

  • art/source/ai/nanobanana-output/

Prompting patterns (examples)

Biome mood board (Bubblegum Bay)

  • Goal: palette direction (NOT final textures)
  • Prompt template:
    • “Landscape-only JRPG biome mood board, low-poly toon, 4-band shading feel, playful pastel seaside town, calm ocean blues, candy accents, no text, 6 panels.”

Prop concept sheet

  • “Turnaround concept sheet for a low-poly toon prop: , simple shapes, clean silhouettes, no text, white background, 3 views.”

UI exploration

  • “Turn-based JRPG UI mockup, top HUD with portraits and HP/MP bars, bottom command menu boxes, cozy kid-friendly, no cassette theme, no text labels.”

Next step (convert to deterministic assets)

After generation:

  1. Extract palette candidates (tools/python)
  2. Build the prop/character in Blender using templates
  3. Bake sprites/backgrounds via scripts
  4. Validate outputs

Acceptance checks

  • Any nano banana output used in production must have:
    • a recipe stub referencing it
    • a deterministic conversion step (Blender bake or modeling)