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osu-lazer/osu.Game/Screens/Menu/MenuSideFlashes.cs
2017-05-22 04:55:33 -05:00

96 lines
3.8 KiB
C#

// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using OpenTK.Graphics;
using osu.Framework.Allocation;
using osu.Framework.Configuration;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Colour;
using osu.Game.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Timing;
using System;
using TrackAmplitudes = osu.Framework.Audio.Track.Track.TrackAmplitudes;
namespace osu.Game.Screens.Menu
{
public class MenuSideFlashes : BeatSyncedContainer
{
public override bool HandleInput => false;
private readonly Bindable<WorkingBeatmap> beatmap = new Bindable<WorkingBeatmap>();
private readonly Box leftBox;
private readonly Box rightBox;
private const float amplitude_dead_zone = 0.25f;
private const float alpha_multiplier = (1 - amplitude_dead_zone) / 0.55f;
private const float kiai_multiplier = (1 - amplitude_dead_zone * 0.95f) / 0.8f;
private const int box_max_alpha = 200;
private const double box_fade_in_time = 65;
public MenuSideFlashes()
{
RelativeSizeAxes = Axes.Both;
Anchor = Anchor.Centre;
Origin = Anchor.Centre;
BlendingMode = BlendingMode.Additive;
Children = new Drawable[]
{
leftBox = new Box
{
Anchor = Anchor.CentreLeft,
Origin = Anchor.CentreLeft,
RelativeSizeAxes = Axes.Y,
Width = 300,
Alpha = 0,
BlendingMode = BlendingMode.Additive,
ColourInfo = ColourInfo.GradientHorizontal(new Color4(255, 255, 255, box_max_alpha), Color4.Black.Opacity(0)),
},
rightBox = new Box
{
Anchor = Anchor.CentreRight,
Origin = Anchor.CentreRight,
RelativeSizeAxes = Axes.Y,
Width = 300,
Alpha = 0,
BlendingMode = BlendingMode.Additive,
ColourInfo = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0), new Color4(255, 255, 255, box_max_alpha)),
}
};
}
protected override void OnNewBeat(int newBeat, double beatLength, TimeSignatures timeSignature, bool kiai)
{
if (newBeat < 0)
return;
TrackAmplitudes amp = beatmap.Value.Track.CurrentAmplitudes;
if (kiai ? newBeat % 2 == 0 : newBeat % (int)timeSignature) == 0)
{
leftBox.ClearTransforms();
leftBox.FadeTo(Math.Max(0, (amp.LeftChannel - amplitude_dead_zone) / (kiai ? kiai_multiplier : alpha_multiplier)), 65);
using (leftBox.BeginDelayedSequence(box_fade_in_time))
leftBox.FadeOut(beatLength, EasingTypes.In);
leftBox.DelayReset();
}
if (kiai ? newBeat % 2 == 1 : newBeat % (int)timeSignature == 0)
{
rightBox.ClearTransforms();
rightBox.FadeTo(Math.Max(0, (amp.RightChannel - amplitude_dead_zone) / (kiai ? kiai_multiplier : alpha_multiplier)), 65);
using (rightBox.BeginDelayedSequence(box_fade_in_time))
rightBox.FadeOut(beatLength, EasingTypes.In);
rightBox.DelayReset();
}
}
[BackgroundDependencyLoader]
private void load(OsuGameBase game)
{
beatmap.BindTo(game.Beatmap);
}
}
}