From 7271e02f6f32bcbb64d0b8b2d8565d1d94c342ab Mon Sep 17 00:00:00 2001
From: UnknownShadow200 <unknownshadow200@gmail.com>
Date: Tue, 22 Sep 2015 06:42:17 +1000
Subject: [PATCH] Persist key bindings, fixes #81.

---
 ClassicalSharp/ClassicalSharp.csproj      |  1 +
 ClassicalSharp/Game/Game.InputHandling.cs | 60 +++++++++++++++++++----
 ClassicalSharp/Utils/Options.cs           | 58 ++++++++++++++++++++++
 3 files changed, 110 insertions(+), 9 deletions(-)
 create mode 100644 ClassicalSharp/Utils/Options.cs

diff --git a/ClassicalSharp/ClassicalSharp.csproj b/ClassicalSharp/ClassicalSharp.csproj
index da638e75b..32dc667ae 100644
--- a/ClassicalSharp/ClassicalSharp.csproj
+++ b/ClassicalSharp/ClassicalSharp.csproj
@@ -168,6 +168,7 @@
     <Compile Include="Utils\Camera.cs" />
     <Compile Include="Utils\FastBitmap.cs" />
     <Compile Include="Utils\FastColour.cs" />
+    <Compile Include="Utils\Options.cs" />
     <Compile Include="Utils\TextureRectangle.cs" />
     <Compile Include="Utils\StringBuffer.cs" />
     <Compile Include="Utils\Utils.cs" />
diff --git a/ClassicalSharp/Game/Game.InputHandling.cs b/ClassicalSharp/Game/Game.InputHandling.cs
index 659ae4f86..ae0b32b9a 100644
--- a/ClassicalSharp/Game/Game.InputHandling.cs
+++ b/ClassicalSharp/Game/Game.InputHandling.cs
@@ -1,7 +1,8 @@
-using System;
-using ClassicalSharp.Particles;
-using OpenTK;
-using OpenTK.Input;
+using System;
+using System.IO;
+using ClassicalSharp.Particles;
+using OpenTK;
+using OpenTK.Input;
 
 namespace ClassicalSharp {
 
@@ -195,15 +196,15 @@ namespace ClassicalSharp {
 	public enum KeyMapping {
 		Forward, Back, Left, Right, Jump, Respawn, SetSpawn, OpenChat,
 		SendChat, PauseOrExit, OpenInventory, Screenshot, Fullscreen, VSync,
-		ThirdPersonCamera, ViewDistance, Fly, Speed, NoClip, FlyUp, 
-		FlyDown, PlayerList, HideGui, 
+		ThirdPersonCamera, ViewDistance, Fly, Speed, NoClip, FlyUp,
+		FlyDown, PlayerList, HideGui,
 	}
 	
 	public class KeyMap {
 		
 		public Key this[KeyMapping key] {
 			get { return Keys[(int)key]; }
-			set { Keys[(int)key] = value; }
+			set { Keys[(int)key] = value; SaveKeyBindings(); }
 		}
 		
 		Key[] Keys;
@@ -229,18 +230,59 @@ namespace ClassicalSharp {
 			Keys = new Key[] {
 				Key.W, Key.S, Key.A, Key.D, Key.Space, Key.R, Key.Y, Key.T,
 				Key.Enter, Key.Escape, Key.B, Key.F12, Key.F11, Key.F7,
-				Key.F5, Key.F, Key.Z, Key.ShiftLeft, Key.X, Key.Q, 
+				Key.F5, Key.F, Key.Z, Key.ShiftLeft, Key.X, Key.Q,
 				Key.E, Key.Tab, Key.F1 };
 			#else
 			Keys = new Key[23];
 			Keys[0] = Key.W; Keys[1] = Key.S; Keys[2] = Key.A; Keys[3] = Key.D;
 			Keys[4] = Key.Space; Keys[5] = Key.R; Keys[6] = Key.Y; Keys[7] = Key.T;
-			Keys[8] = Key.Enter; Keys[9] = Key.Escape; Keys[10] = Key.B; 
+			Keys[8] = Key.Enter; Keys[9] = Key.Escape; Keys[10] = Key.B;
 			Keys[11] = Key.F12; Keys[12] = Key.F11; Keys[13] = Key.F7;
 			Keys[14] = Key.F5; Keys[15] = Key.F; Keys[16] = Key.Z;
 			Keys[17] = Key.ShiftLeft; Keys[18] = Key.X; Keys[19] = Key.Q;
 			Keys[20] = Key.E; Keys[21] = Key.Tab; Keys[22] = Key.F1;
 			#endif
+			LoadKeyBindings();
+		}
+		
+		void LoadKeyBindings() {
+			try {
+				Options.Load();
+			} catch( IOException ) {
+				Utils.LogWarning( "Unable to load options.txt" );
+				return;
+			}
+			string[] names = KeyMapping.GetNames( typeof( KeyMapping ) );
+			for( int i = 0; i < names.Length; i++ ) {
+				string key = "key-" + names[i];
+				string value = Options.Get( key );
+				if( value == null ) {
+					Options.Set( key, Keys[i].ToString() );
+					continue;
+				}
+				
+				Key mapping;
+				try {
+					mapping = (Key)Enum.Parse( typeof( Key ), value, true );
+				} catch( ArgumentException ) {
+					Options.Set( key, Keys[i].ToString() );
+					continue;
+				}
+				if( !IsReservedKey( mapping ) )
+					Keys[i] = mapping;
+			}
+		}
+		
+		void SaveKeyBindings() {
+			string[] names = KeyMapping.GetNames( typeof( KeyMapping ) );
+			for( int i = 0; i < names.Length; i++ ) {
+				Options.Set( "key-" + names[i], Keys[i].ToString() );
+			}
+			try {
+				Options.Save();
+			} catch( IOException ) {
+				Utils.LogWarning( "Unable to sace options.txt" );
+			}
 		}
 	}
 }
\ No newline at end of file
diff --git a/ClassicalSharp/Utils/Options.cs b/ClassicalSharp/Utils/Options.cs
new file mode 100644
index 000000000..b390edc83
--- /dev/null
+++ b/ClassicalSharp/Utils/Options.cs
@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace ClassicalSharp {
+	
+	public static class Options {
+		
+		static Dictionary<string, string> OptionsSet = new Dictionary<string, string>();
+		
+		public static string Get( string key ) {
+			string value;
+			return OptionsSet.TryGetValue( key, out value ) ? value : null;
+		}
+		
+		public static void Set( string key, string value ) {
+			OptionsSet[key] = value;
+		}
+		
+		public const string OptionsFile = "options.txt";
+		
+		public static void Load() {
+			try {
+				using( StreamReader reader = new StreamReader( OptionsFile, false ) )
+					LoadFrom( reader );
+			} catch( FileNotFoundException ) {
+				
+			}
+		}
+		
+		static void LoadFrom( StreamReader reader ) {
+			string line;
+			while( ( line = reader.ReadLine() ) != null ) {
+				if( line.Length == 0 && line[0] == '#' ) continue;
+				
+				int separatorIndex = line.IndexOf( '=' );
+				if( separatorIndex <= 0 ) continue;
+				string key = line.Substring( 0, separatorIndex );
+				
+				separatorIndex++;
+				if( separatorIndex == line.Length ) continue;
+				string value = line.Substring( separatorIndex, line.Length - separatorIndex );
+				OptionsSet[key] = value;
+			}
+		}
+		
+		public static void Save() {
+			using( StreamWriter writer = new StreamWriter( OptionsFile ) ) {
+				foreach( KeyValuePair<string, string> pair in OptionsSet ) {
+					writer.Write( pair.Key );
+					writer.Write( '=' );
+					writer.Write( pair.Value );
+					writer.WriteLine();
+				}
+			}
+		}
+	}
+}