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Game assets

Sound effects, sprites and nine-slice UI from one build file, exported straight into the game.

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What you get

One build file makes the audio and the art of a game. Re-cutting a sprite never pays for the image again, because the image is a separate item with its own key.

The build file

ui.moku.yaml
version: 1
name: ui
items:
  - id: coin-pickup
    task: sfx
    provider: elevenlabs
    input: { model: eleven_text_to_sound_v2, prompt: "coin pickup, bright 8-bit chime", durationMs: 600 }
  - id: button-raw
    task: image
    provider: fal
    input: { model: nano-banana-pro, prompt: "wooden game UI button, flat colour background", aspect: "1:1" }
  - id: "button{nine=12,12,12,12}"
    task: sprite
    provider: fal
    input: { source: { $ref: button-raw }, model: birefnet, size: { width: 128, height: 64 }, padding: 2 }
  - id: menu-loop
    task: music
    provider: fal
    input: { model: elevenlabs-music-v2.5, prompt: "calm looping menu theme", lengthMs: 30000 }
  • sfx and music need model. The artifact key hashes the input as written, so there is no provider default.
  • Name the provider on music items. A music item with no provider goes to the first registered one, elevenlabs, whose model ids differ from fal's.
  • A sprite takes two items. The image makes the picture, and the sprite cuts it by $ref.
  • The {nine=l,t,r,b} hint stays in the file name. The game engine reads it there.

Run it into the game

  1. Estimate. No key needed.

    estimate
    moku estimate ui.moku.yaml

  2. Run with a ceiling. This item set needs ELEVENLABS_API_KEY and FAL_KEY.

    run
    moku run ui.moku.yaml --max-cost 2 --out assets/ui --flat

  3. Find the files. --flat drops the build folder: assets/ui/coin-pickup.mp3, assets/ui/button{nine=12,12,12,12}.png, the raw image and the music track.

  4. Tune and run again. Change padding or size. Only the sprite is cut again.

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