$schema: "res://addons/yaml/examples/data/fimbul.generator.schema.yaml"
params:
  x: float
  y: float
  noiseScale: float
  noise2D: Callable

functions:
  - name: continentShape
    params: ["x", "y"]
    returns: float
    code: abs(cos(x * PI * 2 + PI * 0.5) * sin(y * PI))

  - name: heightNoise
    params: ["x", "y", "noiseScale", "noise2D"]
    returns: float
    code: noise2D(x * noiseScale, y * noiseScale) * 0.5 + 0.5

  - name: height
    dependencies: ["continentShape", "heightNoise"]
    returns: float
    code: continentShape * heightNoise

  - name: temperature
    params: ["y"]
    dependencies: ["height"]
    returns: float
    code: y - (height - 0.4) * 2 if height > 0.4 else y

  - name: precipitation
    params: ["y"]
    dependencies: ["temperature"]
    returns: float
    code: 1 - temperature

  - name: biome
    returns: String
    dependencies: ["height", "temperature", "precipitation"]
    code: |
      if height < 0.2023:
        return 'ocean'
      if temperature >= 0.666:
        return 'desert'
      if temperature > 0.42 && precipitation > 0.42:
        return 'rainforest'
      if temperature > 0.3 && precipitation > 0.3:
        return 'forest'
      if temperature <= 0.21:
        return 'tundra'
      return 'meadows'