mirror of https://github.com/ppy/osu
122 lines
4.7 KiB
C#
122 lines
4.7 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using System.Linq;
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using osu.Framework.MathUtils;
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using osu.Game.Beatmaps;
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using osu.Game.Rulesets.Catch.Objects;
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using osu.Game.Rulesets.Catch.UI;
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using osu.Game.Rulesets.Replays;
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using osu.Game.Users;
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namespace osu.Game.Rulesets.Catch.Replays
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{
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internal class CatchAutoGenerator : AutoGenerator<CatchHitObject>
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{
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public const double RELEASE_DELAY = 20;
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public CatchAutoGenerator(Beatmap<CatchHitObject> beatmap)
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: base(beatmap)
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{
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Replay = new Replay { User = new User { Username = @"Autoplay" } };
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}
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protected Replay Replay;
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public override Replay Generate()
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{
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// todo: add support for HT DT
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const double dash_speed = CatcherArea.Catcher.BASE_SPEED;
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const double movement_speed = dash_speed / 2;
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float lastPosition = 0.5f;
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double lastTime = 0;
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// Todo: Realistically this shouldn't be needed, but the first frame is skipped with the way replays are currently handled
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Replay.Frames.Add(new CatchReplayFrame(-100000, lastPosition));
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void moveToNext(CatchHitObject h)
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{
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float positionChange = Math.Abs(lastPosition - h.X);
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double timeAvailable = h.StartTime - lastTime;
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//So we can either make it there without a dash or not.
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double speedRequired = positionChange / timeAvailable;
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bool dashRequired = speedRequired > movement_speed && h.StartTime != 0;
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// todo: get correct catcher size, based on difficulty CS.
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const float catcher_width_half = CatcherArea.CATCHER_SIZE / CatchPlayfield.BASE_WIDTH * 0.3f * 0.5f;
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if (lastPosition - catcher_width_half < h.X && lastPosition + catcher_width_half > h.X)
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{
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//we are already in the correct range.
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lastTime = h.StartTime;
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime, lastPosition));
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return;
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}
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if (h is BananaShower.Banana)
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{
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// auto bananas unrealistically warp to catch 100% combo.
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
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}
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else if (h.HyperDash)
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{
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeAvailable, lastPosition));
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
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}
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else if (dashRequired)
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{
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//we do a movement in two parts - the dash part then the normal part...
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double timeAtNormalSpeed = positionChange / movement_speed;
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double timeWeNeedToSave = timeAtNormalSpeed - timeAvailable;
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double timeAtDashSpeed = timeWeNeedToSave / 2;
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float midPosition = (float)Interpolation.Lerp(lastPosition, h.X, (float)timeAtDashSpeed / timeAvailable);
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//dash movement
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeAvailable + 1, lastPosition, true));
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeAvailable + timeAtDashSpeed, midPosition));
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
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}
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else
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{
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double timeBefore = positionChange / movement_speed;
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeBefore, lastPosition));
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Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
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}
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lastTime = h.StartTime;
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lastPosition = h.X;
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}
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foreach (var obj in Beatmap.HitObjects)
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{
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switch (obj)
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{
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case Fruit _:
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moveToNext(obj);
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break;
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}
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foreach (var nestedObj in obj.NestedHitObjects.Cast<CatchHitObject>())
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{
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switch (nestedObj)
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{
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case BananaShower.Banana _:
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case TinyDroplet _:
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case Droplet _:
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case Fruit _:
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moveToNext(nestedObj);
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break;
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}
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}
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}
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return Replay;
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}
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}
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}
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