private IEnumerator GetMetadata()
{
if (_meta != null)
{
yield break;
}
var req = UnityWebRequest.Get(MetadataUrl);
yield return(req.SendWebRequest());
if (!string.IsNullOrEmpty(req.error))
{
Fail();
yield break;
}
var json = req.downloadHandler.text;
Debug.Log($"Received metadata: {json}");
_meta = JsonUtility.FromJson <PromoMetadata>(json);
if (Developers.Enabled && SkipCaching)
{
_meta.version = StencilRandom.Range(0, int.MaxValue);
}
}
public static T WeightedRandom <T>(this ICollection <T> coll, float?total = null) where T : IWeightHaver
{
total = total ?? coll.Sum(w => w.GetWeight());
var rand = StencilRandom.Range(0f, total.Value);
var test = 0f;
foreach (var p in coll)
{
var w = p.GetWeight();
if (rand >= test && rand < w + test)
{
return(p);
}
test += w;
}
return(default(T));
}