osu-lazer/osu.Game/Rulesets/Difficulty/IDifficultyAttributes.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.Beatmaps;
using osu.Game.Rulesets.Mods;

namespace osu.Game.Rulesets.Difficulty
{
    /// <summary>
    /// Describes the difficulty of a beatmap, as output by a <see cref="DifficultyCalculator"/>.
    /// </summary>
    [JsonObject(MemberSerialization.OptIn)]
    public interface IDifficultyAttributes
    {
        protected const int ATTRIB_ID_AIM = 1;
        protected const int ATTRIB_ID_SPEED = 3;
        protected const int ATTRIB_ID_OVERALL_DIFFICULTY = 5;
        protected const int ATTRIB_ID_APPROACH_RATE = 7;
        protected const int ATTRIB_ID_MAX_COMBO = 9;
        protected const int ATTRIB_ID_DIFFICULTY = 11;
        protected const int ATTRIB_ID_GREAT_HIT_WINDOW = 13;
        protected const int ATTRIB_ID_SCORE_MULTIPLIER = 15;
        protected const int ATTRIB_ID_FLASHLIGHT = 17;
        protected const int ATTRIB_ID_SLIDER_FACTOR = 19;
        protected const int ATTRIB_ID_SPEED_NOTE_COUNT = 21;
        protected const int ATTRIB_ID_SPEED_DIFFICULT_STRAIN_COUNT = 23;
        protected const int ATTRIB_ID_AIM_DIFFICULT_STRAIN_COUNT = 25;
        protected const int ATTRIB_ID_OK_HIT_WINDOW = 27;

        /// <summary>
        /// The mods which were applied to the beatmap.
        /// </summary>
        public Mod[] Mods { get; set; }

        /// <summary>
        /// The combined star rating of all skills.
        /// </summary>
        [JsonProperty("star_rating", Order = -3)]
        public double StarRating { get; set; }

        /// <summary>
        /// The maximum achievable combo.
        /// </summary>
        [JsonProperty("max_combo", Order = -2)]
        public int MaxCombo { get; set; }

        /// <summary>
        /// Converts this <see cref="IDifficultyAttributes"/> to osu-web compatible database attribute mappings.
        /// </summary>
        /// <remarks>
        /// See: osu_difficulty_attribs table.
        /// </remarks>
        public IEnumerable<(int attributeId, object value)> ToDatabaseAttributes();

        /// <summary>
        /// Reads osu-web database attribute mappings into this <see cref="IDifficultyAttributes"/> object.
        /// </summary>
        /// <param name="values">The attribute mappings.</param>
        /// <param name="onlineInfo">The <see cref="IBeatmapOnlineInfo"/> where more information about the beatmap may be extracted from (such as AR/CS/OD/etc).</param>
        public void FromDatabaseAttributes(IReadOnlyDictionary<int, double> values, IBeatmapOnlineInfo onlineInfo);
    }
}