osu-lazer/osu.Game.Rulesets.Mania/Difficulty/ManiaPerformanceAttributes.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using System.Collections.Generic;
using Newtonsoft.Json;
using osu.Game.Rulesets.Difficulty;

namespace osu.Game.Rulesets.Mania.Difficulty
{
    public class ManiaPerformanceAttributes : PerformanceAttributes
    {
        [JsonProperty("difficulty")]
        public double Difficulty { get; set; }

        public override IEnumerable<PerformanceDisplayAttribute> GetAttributesForDisplay()
        {
            foreach (var attribute in base.GetAttributesForDisplay())
                yield return attribute;

            yield return new PerformanceDisplayAttribute(nameof(Difficulty), "Difficulty", Difficulty);
        }
    }
}