Create and implement the CpeTextColours extension.

ClassicalSharp/2D/Drawing/IDrawer2D.cs

@@ -146,6 +146,18 @@ namespace ClassicalSharp {
 			return Platform.CreateBmp( Utils.NextPowerOf2( size.Width ), Utils.NextPowerOf2( size.Height ) );
 		}
 		
+		public FastColour[] Colours = new FastColour[256];
+		
+		public IDrawer2D() {
+			for( int i = 0; i <= 9; i++ )
+				Colours['0' + i] = FastColour.GetHexEncodedCol( i );
+			
+			for( int i = 10; i <= 15; i++) {
+				Colours['a' + i - 10] = FastColour.GetHexEncodedCol( i );
+				Colours['A' + i - 10] = FastColour.GetHexEncodedCol( i );
+			}
+		}
+		
 		protected List<TextPart> parts = new List<TextPart>( 64 );
 		protected struct TextPart {
 			public string Text;
@@ -168,25 +180,31 @@ namespace ClassicalSharp {
 		}
 		
 		protected void SplitText( string value ) {
-			int code = 0xF;
+			char code = 'F';
 			for( int i = 0; i < value.Length; i++ ) {
 				int nextAnd = value.IndexOf( '&', i );
 				int partLength = nextAnd == -1 ? value.Length - i : nextAnd - i;
 				
 				if( partLength > 0 ) {
 					string part = value.Substring( i, partLength );
-					FastColour col = FastColour.GetHexEncodedCol( code );
+					FastColour col = Colours[code];
 					parts.Add( new TextPart( part, col ) );
 				}
 				i += partLength + 1;
 				
 				if( nextAnd >= 0 && nextAnd + 1 < value.Length ) {
-					if( !Utils.TryParseHex( value[nextAnd + 1], out code ) ) {
+					if( !ValidColour( value[nextAnd + 1] ) ) {
-						code = 0xF;
+						code = 'F';
-						i--;// include the character that isn't a colour code.
+						i--; // include the character that isn't a colour code.
+					} else {
+						code = value[nextAnd + 1];
 					}
 				}
 			}
 		}
+		
+		internal bool ValidColour( char c ) {
+			return Colours[c].A > 0;
+		}
 	}
 }

ClassicalSharp/2D/Screens/ChatScreen.cs

@@ -136,7 +136,7 @@ namespace ClassicalSharp {
 				indices[i] = -1;
 			Metadata = indices;
 			
-			ChatLog chat = game.Chat;
+			Chat chat = game.Chat;
 			chatIndex = chat.Log.Count - chatLines;
 			ResetChat();
 			status.SetText( 0, chat.Status1.Text );

ClassicalSharp/2D/Widgets/Chat/TextGroupWidget.Formatter.cs

@@ -96,8 +96,7 @@ namespace ClassicalSharp {
 			// url and word both need to have %e at the start.
 			
 			if( colIndex >= 0 && colIndex < line.Length - 1 ) {
-				int hex;
+				if( game.Drawer2D.ValidColour( line[colIndex + 1] ) )
-				if( Utils.TryParseHex( line[colIndex + 1], out hex ) )
 					part = "&" + line[colIndex + 1] + part;
 			}
 			return part;

ClassicalSharp/2D/Widgets/Chat/TextInputWidget.cs

@@ -69,7 +69,7 @@ namespace ClassicalSharp {
 		
 		public override void Init() {
 			X = 5;
-			chatInputText.WordWrap( ref parts, ref partLens, 64 );
+			chatInputText.WordWrap( game.Drawer2D, ref parts, ref partLens, 64 );
 
 			maxWidth = 0;
 			DrawTextArgs args = new DrawTextArgs( null, font, true );
@@ -148,16 +148,15 @@ namespace ClassicalSharp {
 		
 		void CalculateCaretCol() {
 			int x = indexX;
+			IDrawer2D drawer = game.Drawer2D;
 			for( int y = indexY; y >= 0; y-- ) {
+				string part = parts[y];
 				if( x == partLens[y] ) x = partLens[y] - 1;
-				int start = parts[y].LastIndexOf( '&', x, x + 1 );
+				int start = part.LastIndexOf( '&', x, x + 1 );
-				
-				int hex;
 				bool validIndex = start >= 0 && start < partLens[y] - 1;
 				
-				if( validIndex && Utils.TryParseHex( parts[y][start + 1], out hex ) ) {
+				if( validIndex && drawer.ValidColour( part[start + 1] ) ) {
-					caretCol = FastColour.GetHexEncodedCol( hex );
+					caretCol = drawer.Colours[part[start + 1]]; return;
-					return;
 				}
 				if( y > 0 ) x = partLens[y - 1] - 1;
 			}

ClassicalSharp/Game/ChatLog.cs

@@ -6,14 +6,14 @@ using ClassicalSharp.Commands;
 
 namespace ClassicalSharp {
 
-	public sealed class ChatLog : IDisposable {
+	public sealed class Chat : IDisposable {
 		
 		public ChatLine Status1, Status2, Status3, BottomRight1,
 		BottomRight2, BottomRight3, Announcement;
 		public ChatLine[] ClientStatus = new ChatLine[6];
 		
 		Game game;
-		public ChatLog( Game game ) {
+		public Chat( Game game ) {
 			this.game = game;
 		}
 		

ClassicalSharp/Game/Game.Properties.cs

@@ -79,7 +79,7 @@ namespace ClassicalSharp {
 		public EntityEvents EntityEvents = new EntityEvents();
 		public MapEvents MapEvents = new MapEvents();
 		public InputHandler InputHandler;
-		public ChatLog Chat;
+		public Chat Chat;
 		public BlockHandRenderer BlockHandRenderer;
 		public AudioPlayer AudioPlayer;
 		public AxisLinesRenderer AxisLinesRenderer;

ClassicalSharp/Game/Game.cs

@@ -50,7 +50,7 @@ namespace ClassicalSharp {
 			UserViewDistance = ViewDistance;
 			CameraClipping = Options.GetBool( OptionsKey.CameraClipping, true );
 			InputHandler = new InputHandler( this );
-			Chat = new ChatLog( this );
+			Chat = new Chat( this );
 			ParticleManager = new ParticleManager( this );
 			HudScale = Options.GetFloat( OptionsKey.HudScale, 0.25f, 5f, 1f );
 			ChatScale = Options.GetFloat( OptionsKey.ChatScale, 0.35f, 5f, 1f );

ClassicalSharp/GraphicsAPI/IGraphicsApi.cs

@@ -214,7 +214,7 @@ namespace ClassicalSharp.GraphicsAPI {
 		}
 		
 		/// <summary> Adds a warning to chat if this graphics API has problems with the current user's GPU. </summary>
-		public virtual void WarnIfNecessary( ChatLog chat ) {
+		public virtual void WarnIfNecessary( Chat chat ) {
 		}
 		
 		/// <summary> Informs the graphic api to update its state in preparation for a new frame. </summary>

ClassicalSharp/GraphicsAPI/OpenGLApi.cs

@@ -393,7 +393,7 @@ namespace ClassicalSharp.GraphicsAPI {
 			isIntelRenderer = renderer.Contains( "Intel" );
 		}
 		
-		public override void WarnIfNecessary( ChatLog chat ) {
+		public override void WarnIfNecessary( Chat chat ) {
 			if( !isIntelRenderer ) return;
 			
 			chat.Add( "&cIntel graphics cards are known to have issues with the OpenGL build." );

ClassicalSharp/GraphicsAPI/OpenGLESApi.cs

@@ -372,7 +372,7 @@ namespace ClassicalSharp.GraphicsAPI {
 			isIntelRenderer = renderer.Contains( "Intel" );
 		}
 		
-		public override void WarnIfNecessary( ChatLog chat ) {
+		public override void WarnIfNecessary( Chat chat ) {
 			if( !isIntelRenderer ) return;
 			
 			chat.Add( "&cIntel graphics cards are known to have issues with the OpenGL build." );

ClassicalSharp/Network/Enums.cs

@@ -43,6 +43,7 @@ namespace ClassicalSharp {
 		CpeRemoveBlockDefinition = 36,
 		CpeDefineBlockExt = 37,
 		CpeBulkBlockUpdate = 38,
+		CpeSetTextColor = 39,
 	}
 	
 	public enum MessageType {

ClassicalSharp/Network/NetworkProcessor.CPE.cs

@@ -65,7 +65,7 @@ namespace ClassicalSharp {
 			"HackControl", "MessageTypes", "PlayerClick",
 			"FullCP437", "LongerMessages",
 			// proposals
-			"BlockDefinitions", "BlockDefinitionsExt",
+			"BlockDefinitions", "BlockDefinitionsExt", "TextColors",
 		};
 		
 		void HandleCpeExtInfo() {
@@ -513,6 +513,17 @@ namespace ClassicalSharp {
 				| buffer[offset + 2] << 8 | buffer[offset + 3];
 		}
 		
+		void HandleSetTextColor() {
+			FastColour col = new FastColour( reader.ReadUInt8(), reader.ReadUInt8(), 
+			                                reader.ReadUInt8(), reader.ReadUInt8() );
+			byte code = reader.ReadUInt8();
+			
+			if( code <= ' ' || code > '~' ) return; // Control chars, space, extended chars cannot be used
+			if( (code >= '0' && code <= '9') || (code >= 'a' && code <= 'f') 
+			   || (code >= 'A' && code <= 'F') ) return; // Standard chars cannot be used.
+			game.Drawer2D.Colours[code] = col;
+		}
+		
 		static SoundType[] stepSnds, breakSnds;
 		static NetworkProcessor() {
 			stepSnds = new SoundType[10];

ClassicalSharp/Network/NetworkProcessor.cs

@@ -159,7 +159,7 @@ namespace ClassicalSharp {
 			131, 1, 1, 1028, 7, 9, 8, 74, 10, 7, 5, 4, 2,
 			66, 65, 2, 67, 69, 3, 2, 3, 134, 196, 130, 3,
 			8, 86, 2, 4, 66, 69, 2, 8, 138, 0, 80, 2, 85,
-			1282,
+			1282, 6,
 		};
 		
 		NetWriter writer;
@@ -209,7 +209,7 @@ namespace ClassicalSharp {
 				HandleCpeSetBlockPermission, HandleCpeChangeModel, HandleCpeEnvSetMapApperance,
 				HandleCpeEnvWeatherType, HandleCpeHackControl, HandleCpeExtAddEntity2,
 				null, HandleCpeDefineBlock, HandleCpeRemoveBlockDefinition, HandleCpeDefineBlockExt,
-				HandleBulkBlockUpdate,
+				HandleBulkBlockUpdate, HandleSetTextColor,
 			};
 			maxHandledPacket = handlers.Length;
 		}

ClassicalSharp/Utils/WrappableStringBuffer.cs

@@ -10,7 +10,7 @@ namespace ClassicalSharp {
 			wrap = new char[capacity];
 		}
 		
-		public void WordWrap( ref string[] lines, ref int[] lineLens, int lineSize ) {
+		public void WordWrap( IDrawer2D drawer, ref string[] lines, ref int[] lineLens, int lineSize ) {
 			int len = Length;
 			for( int i = 0; i < lines.Length; i++ ) {
 				lines[i] = null;
@@ -44,7 +44,7 @@ namespace ClassicalSharp {
 			}
 			
 			// Output the used lines
-			OutputLines( ref lines, linesCount, lineSize, lineLens );
+			OutputLines( drawer, ref lines, linesCount, lineSize, lineLens );
 			value = realText;
 		}
 		
@@ -58,14 +58,13 @@ namespace ClassicalSharp {
 			value = wrap;
 		}
 		
-		void OutputLines( ref string[] lines, int linesCount, int lineSize, int[] lineLens ) {
+		void OutputLines( IDrawer2D drawer, ref string[] lines, int linesCount, int lineSize, int[] lineLens ) {
 			for( int i = 0; i < capacity; i++ ) {
 				if( value[i] == '\0' ) value[i] = ' ';
 			}
 			// convert %0-f to &0-f for colour preview.
 			for( int i = 0; i < capacity - 1; i++ ) {
-				int hex;
+				if( value[i] == '%' && drawer.ValidColour( value[i + 1] ) )
-				if( value[i] == '%' && Utils.TryParseHex( value[i + 1], out hex ) )
 					value[i] = '&';
 			}