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osu-lazer/osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapProcessor.cs

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// 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
using System;
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using System.Collections.Generic;
using System.Linq;
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using osu.Game.Beatmaps;
using osu.Game.Rulesets.Catch.Objects;
using osu.Game.Rulesets.Catch.UI;
using osu.Game.Rulesets.Objects.Types;
using OpenTK;
namespace osu.Game.Rulesets.Catch.Beatmaps
{
public class CatchBeatmapProcessor : BeatmapProcessor<CatchHitObject>
{
public override void PostProcess(Beatmap<CatchHitObject> beatmap)
{
initialiseHyperDash(beatmap.HitObjects);
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base.PostProcess(beatmap);
int index = 0;
foreach (var obj in beatmap.HitObjects)
obj.IndexInBeatmap = index++;
}
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private void initialiseHyperDash(List<CatchHitObject> objects)
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{
// todo: add difficulty adjust.
double halfCatcherWidth = CatcherArea.CATCHER_SIZE * (objects.FirstOrDefault()?.Scale ?? 1) / CatchPlayfield.BASE_WIDTH / 2;
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int lastDirection = 0;
double lastExcess = halfCatcherWidth;
int objCount = objects.Count;
for (int i = 0; i < objCount - 1; i++)
{
CatchHitObject currentObject = objects[i];
// not needed?
// if (currentObject is TinyDroplet) continue;
CatchHitObject nextObject = objects[i + 1];
// while (nextObject is TinyDroplet)
// {
// if (++i == objCount - 1) break;
// nextObject = objects[i + 1];
// }
int thisDirection = nextObject.X > currentObject.X ? 1 : -1;
double timeToNext = nextObject.StartTime - ((currentObject as IHasEndTime)?.EndTime ?? currentObject.StartTime) - 4;
double distanceToNext = Math.Abs(nextObject.X - currentObject.X) - (lastDirection == thisDirection ? lastExcess : halfCatcherWidth);
if (timeToNext * CatcherArea.Catcher.BASE_SPEED < distanceToNext)
{
currentObject.HyperDashTarget = nextObject;
lastExcess = halfCatcherWidth;
}
else
{
//currentObject.DistanceToHyperDash = timeToNext - distanceToNext;
lastExcess = MathHelper.Clamp(timeToNext - distanceToNext, 0, halfCatcherWidth);
}
lastDirection = thisDirection;
}
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}
}
}