Basic white-boxing of all game modes.

osu.Game/GameModes/GameModeWhiteBox.cs

@@ -0,0 +1,138 @@
+//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 osu.Framework.GameModes;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Drawables;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transformations;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.MathUtils;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.GameModes
+{
+    public class GameModeWhiteBox : GameMode
+    {
+        private Button popButton;
+
+        const int transition_time = 1000;
+
+        protected virtual IEnumerable<Type> PossibleChildren => null;
+
+        private FlowContainer childModeButtons;
+
+        protected override double OnEntering(GameMode last)
+        {
+            //only show the pop button if we are entered form another gamemode.
+            popButton.Alpha = 1;
+
+            MoveTo(new Vector2(ActualSize.X, 0));
+            MoveTo(Vector2.Zero, transition_time, EasingTypes.OutQuint);
+            return transition_time;
+        }
+
+        protected override double OnExiting(GameMode next)
+        {
+            MoveTo(new Vector2(ActualSize.X, 0), transition_time, EasingTypes.OutQuint);
+            return transition_time;
+        }
+
+        protected override double OnSuspending(GameMode next)
+        {
+            Content.MoveTo(new Vector2(-ActualSize.X, 0), transition_time, EasingTypes.OutQuint);
+            return transition_time;
+        }
+
+        protected override double OnResuming(GameMode last)
+        {
+            Content.MoveTo(Vector2.Zero, transition_time, EasingTypes.OutQuint);
+            return transition_time;
+        }
+
+        public override void Load()
+        {
+            base.Load();
+
+            Children = new Drawable[]
+            {
+                    new Box
+                    {
+                        SizeMode = InheritMode.XY,
+                        Size = new Vector2(1),
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Colour = getColourFor(GetType())
+                    },
+                    new SpriteText
+                    {
+                        Text = GetType().Name,
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        TextSize = 50,
+                    },
+                    new SpriteText
+                    {
+                        Text = GetType().Namespace,
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Position = new Vector2(0, 30)
+                    },
+                    popButton = new Button
+                    {
+                        Text = @"Back",
+                        SizeMode = InheritMode.X,
+                        Size = new Vector2(0.1f, 40),
+                        Anchor = Anchor.BottomLeft,
+                        Origin = Anchor.BottomLeft,
+                        Colour = new Color4(235, 51, 153, 255),
+                        Alpha = 0,
+                        Action = delegate {
+                            Exit();
+                        }
+                    },
+                    childModeButtons = new FlowContainer
+                    {
+                        Direction = FlowDirection.VerticalOnly,
+                        Anchor = Anchor.TopRight,
+                        Origin = Anchor.TopRight,
+                        SizeMode = InheritMode.XY,
+                        Size = new Vector2(0.1f, 1)
+                    }
+            };
+
+            if (PossibleChildren != null)
+            {
+                foreach (Type t in PossibleChildren)
+                {
+                    childModeButtons.Add(new Button
+                    {
+                        Text = $@"{t.Name}",
+                        SizeMode = InheritMode.X,
+                        Size = new Vector2(1, 40),
+                        Anchor = Anchor.BottomRight,
+                        Origin = Anchor.BottomRight,
+                        Colour = getColourFor(t),
+                        Action = delegate
+                        {
+                            Push(Activator.CreateInstance(t) as GameMode);
+                        }
+                    });
+                }
+            }
+        }
+
+        private Color4 getColourFor(Type type)
+        {
+            int hash = type.Name.GetHashCode();
+            byte r = (byte)MathHelper.Clamp(((hash & 0xFF0000) >> 16) * 0.8f, 20, 255);
+            byte g = (byte)MathHelper.Clamp(((hash & 0x00FF00) >> 8) * 0.8f, 20, 255);
+            byte b = (byte)MathHelper.Clamp((hash & 0x0000FF) * 0.8f, 20, 255);
+            return new Color4(r, g, b, 255);
+        }
+    }
+}