Break the project into milestones and create production/milestone.md plus milestone directories.
Break the project into milestones and create production/milestone.md plus milestone directories.
npx skills add https://github.com/Yuki001/game-dev-skills --skill gat-milestoneこのコマンドをClaude Codeにコピー＆ペーストしてスキルをインストール
Use this skill whenever a user asks to generate, create, draw, render, or edit images with GPT Image 2 / gpt-image-2, text-to-image, reference-image editing, inpainting, posters, typography, Chinese text, UI mockups, diagrams, or gallery prompts. Analyze the user's prompt, search the bundled Reference Gallery/craft files for matching design patterns, confer on direction when useful, then call the bundled CLI script directly. Do not write new image-generation code unless explicitly asked to modify this repo.
READ this skill when designing or planning any game system architecture — including combat, skills, AI, UI, multiplayer, narrative, or scene systems. Contains paradigm selection guides (DDD / Data-Driven / Prototype), system-specific design references, and mixing strategies. Works as a domain knowledge plugin alongside workflow skills (OpenSpec, SpecKit) or plan mode of an agent.
Inspect the repo state and recommend the next step in the simplified workflow.
Run the full design pipeline with brainstorm wizard, or add one missing system.
READ this skill when implementing or configuring animation-style shaders (Toon/Cel Shaders) — including outlines, rim lighting, toon shading, MatCap, emission, dissolve, hatching, or any stylized rendering effect. Contains preset styles and feature-to-reference mappings for lilToon, Poiyomi, UTS2, RToon, SToon, and ToonShadingCollection. Works as a domain knowledge plugin alongside workflow skills (OpenSpec, SpecKit) or plan mode of an agent.
Implement one ready task from a milestone tasks.md.
| name | gat-milestone |
| description | Break the project into milestones and create production/milestone.md plus milestone directories. |
| argument-hint | [optional planning focus] |
| user-invocable | true |
| allowed-tools | Read, Glob, Grep, Write, Edit, Agent, AskUserQuestion |
This skill writes:
production/milestone.mdproduction/milestone-xx-name/Fail if any of these are missing:
design/gdd/game.mddesign/gdd/systems-index.mddesign/art/art-direction.mdAlso stop if no system GDDs exist in design/gdd/ besides game.md and systems-index.md.
Read:
design/gdd/game.mddesign/gdd/systems-index.mddesign/gdd/*.md except game.md and systems-index.mddesign/art/art-direction.mddesign/art/*-art.md.claude/docs/templates/plan/milestone.mdproduction/milestone.md if existsSpawn gat-planner agent with all read content plus:
production/milestone.mdproduction/milestone-01-name/The planner should:
Summarize how many milestones were planned and which comes first.
Use AskUserQuestion:
Plan first milestone (Recommended) → Run /gat-planStop here