osu/osu.Game/GameModes/OsuGameMode.cs

75 lines
2.3 KiB
C#

//Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
//Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using osu.Framework.GameModes;
using osu.Framework.Graphics.Containers;
using osu.Game.Graphics.Background;
using osu.Game.Graphics.Containers;
namespace osu.Game.GameModes
{
public class OsuGameMode : GameMode
{
internal BackgroundMode Background { get; private set; }
/// <summary>
/// Override to create a BackgroundMode for the current GameMode.
/// Note that the instance created may not be the used instance if it matches the BackgroundMode equality clause.
/// </summary>
protected virtual BackgroundMode CreateBackground() => null;
protected override void OnEntering(GameMode last)
{
OsuGameMode lastOsu = last as OsuGameMode;
BackgroundMode bg = CreateBackground();
if (lastOsu?.Background != null)
{
if (bg == null || lastOsu.Background.Equals(bg))
//we can keep the previous mode's background.
Background = lastOsu.Background;
else
{
lastOsu.Background.Push(Background = bg);
}
}
else if (bg != null)
{
AddTopLevel(new ParallaxContainer
{
Depth = float.MinValue,
Children = new[]
{
Background = bg
}
});
}
base.OnEntering(last);
}
protected override bool OnExiting(GameMode next)
{
OsuGameMode nextOsu = next as OsuGameMode;
if (Background != null && !Background.Equals(nextOsu?.Background))
{
if (nextOsu != null)
//We need to use MakeCurrent in case we are jumping up multiple game modes.
nextOsu.Background.MakeCurrent();
else
Background.Exit();
}
return base.OnExiting(next);
}
}
}