{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/kubohiroya/turbowarp-scene-graph/main/schemas/editor-compatible-kamishibai-3d-scene-extension.schema.json",
  "title": "Kamishibai 3D Scene Extension (existing parser compatibility)",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "scene3d": {
      "$ref": "editor-compatible-scene-document.schema.json"
    },
    "ar": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "cameraId": {
          "type": "string"
        },
        "layer": {
          "description": "The stacking vocabulary turbowarp-ar and turbowarp-aframe share.",
          "enum": [
            "above-stage",
            "below-stage"
          ]
        },
        "targets": {
          "type": "array",
          "items": {
            "type": "object",
            "additionalProperties": false,
            "required": [
              "targetId",
              "selector"
            ],
            "properties": {
              "targetId": {
                "type": "string",
                "minLength": 1
              },
              "selector": {
                "type": "string",
                "minLength": 1
              }
            }
          }
        }
      }
    }
  },
  "description": "Both halves are optional. An empty fragment is valid and expands to no calls."
}