TenkokuWetness.cs

public class TenkokuWetness
    : BaseExternalWetnessSource
{
    [SerializeField, Range(-1, 1), Tooltip("Current change-per-second in environmental wetness")]
    private float _editorRainIntensity;
        
    public override float RainIntensity
    {
        get
        {
#if UNITY_EDITOR
            // If we're in edit mode then return the value from the inspector sliders
            if (!UnityEditor.EditorApplication.isPlaying)
                return _editorRainIntensity;
#endif

            // TODO: Get current rain intensity from TENKOKU. The _rate_ that it is getting wetter.
            // -1: Drying out as quickly as possible (hot sun).
            //  0: no change.
            //  1: maximum possible rain intensity (rain storm).
        }
    }
}