Specification v1.0 Standard

SpriteFlow Open Manifest Specification v1.0

The cross-engine JSON schema standard for living game assets and texture atlases.

Standard Execution Pipeline

1. Style DNA Spec Validation

Verifies 16-color palette indexation, pixel scale modulus, and zero prompt hallucination.

2. MaxRects POT Bin Packing

Packs frames into power-of-two (POT) texture boundaries with 2px alpha dilation bleed.

3. Native Engine Code Generation

Emits Godot 4.x AtlasTexture (.tres), Unity 2022+ (.meta), and SpriteFlow JSON manifests.

Specification Overview

The SpriteFlow manifest (`spriteflow.manifest.json`) defines standardized sprite coordinates, UV mappings, 9-slice borders, and animation sequences.

JSON Schema Structure

{
  "$schema": "https://spriteflow.dev/schemas/v1/manifest.json",
  "generator": "SpriteFlow Pipeline Engine v1.0.0",
  "meta": {
    "image": "atlas.png",
    "format": "RGBA8888",
    "size": { "w": 512, "h": 512 },
    "potSize": { "w": 512, "h": 512 },
    "padding": 2
  },
  "frames": {
    "hero_sword": {
      "frame": { "x": 2, "y": 2, "w": 32, "h": 32 },
      "uv": { "u0": 0.0039, "v0": 0.0039, "u1": 0.0664, "v1": 0.0664 },
      "pivot": { "x": 0.5, "y": 0.5 }
    }
  }
}