Cleanup: Assorted

* Separate the HUD into it's own class / folders

source/OpenBVE/Graphics/HUD/HUD.Element.cs

@@ -0,0 +1,55 @@
+using OpenBveApi.Colors;
+using OpenBveApi.Math;
+
+namespace OpenBve
+{
+	internal static partial class HUD
+	{
+		internal class Element
+		{
+			internal string Subject;
+			internal Vector2 Position;
+			internal Vector2 Alignment;
+			internal Image TopLeft;
+			internal Image TopMiddle;
+			internal Image TopRight;
+			internal Image CenterLeft;
+			internal Image CenterMiddle;
+			internal Image CenterRight;
+			internal Image BottomLeft;
+			internal Image BottomMiddle;
+			internal Image BottomRight;
+			internal Color32 BackgroundColor;
+			internal Color32 OverlayColor;
+			internal Color32 TextColor;
+			internal Vector2 TextPosition;
+			internal Vector2 TextAlignment;
+			internal Fonts.OpenGlFont Font;
+			internal bool TextShadow;
+			internal string Text;
+			internal float Value1;
+			internal float Value2;
+			internal Transition Transition;
+			internal Vector2 TransitionVector;
+			internal double TransitionState;
+			internal Element()
+			{
+				this.Subject = null;
+				this.Position = new Vector2();
+				this.Alignment = new Vector2(-1, -1);
+				this.BackgroundColor = new Color32(255, 255, 255, 255);
+				this.OverlayColor = new Color32(255, 255, 255, 255);
+				this.TextColor = new Color32(255, 255, 255, 255);
+				this.TextPosition = new Vector2();
+				this.TextAlignment = new Vector2(-1, 0);
+				this.Font = Fonts.VerySmallFont;
+				this.TextShadow = true;
+				this.Text = null;
+				this.Value1 = 0.0f;
+				this.Value2 = 0.0f;
+				this.Transition = Transition.None;
+				this.TransitionState = 1.0;
+			}
+		}
+	}
+}

source/OpenBVE/Graphics/HUD/HUD.Image.cs

@@ -0,0 +1,11 @@
+namespace OpenBve
+{
+	internal static partial class HUD
+	{
+		internal struct Image
+		{
+			internal Textures.Texture BackgroundTexture;
+			internal Textures.Texture OverlayTexture;
+		}
+	}
+}

source/OpenBVE/Graphics/HUD/HUD.Transitions.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace OpenBve
+{
+	internal static partial class HUD
+	{
+		[Flags]
+		internal enum Transition
+		{
+			None = 0,
+			Move = 1,
+			Fade = 2,
+			MoveAndFade = 3
+		}
+	}
+}