// 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 osuTK; using osu.Game.Beatmaps; using System; using System.Collections.Generic; using osu.Game.Replays; using osu.Game.Rulesets.Osu.UI; using osu.Game.Rulesets.Replays; namespace osu.Game.Rulesets.Osu.Replays { public abstract class OsuAutoGeneratorBase : AutoGenerator { #region Constants /// <summary> /// Constants (for spinners). /// </summary> protected static readonly Vector2 SPINNER_CENTRE = OsuPlayfield.BASE_SIZE / 2; protected const float SPIN_RADIUS = 50; /// <summary> /// The time in ms between each ReplayFrame. /// </summary> protected readonly double FrameDelay; #endregion #region Construction / Initialisation protected Replay Replay; protected List<ReplayFrame> Frames => Replay.Frames; protected OsuAutoGeneratorBase(IBeatmap beatmap) : base(beatmap) { Replay = new Replay(); // We are using ApplyModsToRate and not ApplyModsToTime to counteract the speed up / slow down from HalfTime / DoubleTime so that we remain at a constant framerate of 60 fps. FrameDelay = ApplyModsToRate(1000.0 / 60.0); } #endregion #region Utilities protected double ApplyModsToTime(double v) => v; protected double ApplyModsToRate(double v) => v; private class ReplayFrameComparer : IComparer<ReplayFrame> { public int Compare(ReplayFrame f1, ReplayFrame f2) { if (f1 == null) throw new ArgumentNullException(nameof(f1)); if (f2 == null) throw new ArgumentNullException(nameof(f2)); return f1.Time.CompareTo(f2.Time); } } private static readonly IComparer<ReplayFrame> replay_frame_comparer = new ReplayFrameComparer(); protected int FindInsertionIndex(ReplayFrame frame) { int index = Frames.BinarySearch(frame, replay_frame_comparer); if (index < 0) { index = ~index; } else { // Go to the first index which is actually bigger while (index < Frames.Count && frame.Time == Frames[index].Time) { ++index; } } return index; } protected void AddFrameToReplay(ReplayFrame frame) => Frames.Insert(FindInsertionIndex(frame), frame); protected static Vector2 CirclePosition(double t, double radius) => new Vector2((float)(Math.Cos(t) * radius), (float)(Math.Sin(t) * radius)); #endregion } }