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osu-lazer/osu.Game/Screens/OsuScreenStack.cs
2019-03-25 12:39:40 +09:00

49 lines
1.4 KiB
C#

// 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 osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Screens;
using osu.Game.Graphics.Containers;
namespace osu.Game.Screens
{
public class OsuScreenStack : ScreenStack
{
[Cached]
private BackgroundScreenStack backgroundScreenStack;
private ParallaxContainer parallaxContainer;
protected float ParallaxAmount => parallaxContainer.ParallaxAmount;
public OsuScreenStack()
{
initializeStack();
}
public OsuScreenStack(IScreen baseScreen)
: base(baseScreen)
{
initializeStack();
}
private void initializeStack()
{
InternalChild = parallaxContainer = new ParallaxContainer
{
RelativeSizeAxes = Axes.Both,
Child = backgroundScreenStack = new BackgroundScreenStack { RelativeSizeAxes = Axes.Both },
};
ScreenPushed += onScreenChange;
ScreenExited += onScreenChange;
}
private void onScreenChange(IScreen prev, IScreen next)
{
parallaxContainer.ParallaxAmount = ParallaxContainer.DEFAULT_PARALLAX_AMOUNT * ((IOsuScreen)next)?.BackgroundParallaxAmount ?? 1.0f;
}
}
}