Show hovered names as an option.

ClassicalSharp/2D/Screens/Menu/OptionsScreen.cs

@@ -63,7 +63,7 @@ namespace ClassicalSharp {
 				
 				// Extra stuff
 				!network.IsSinglePlayer ? null :
-					Make( -140, -150, "Singleplayer physics", Anchor.Centre, OnWidgetClick,
+					Make( -140, -200, "Singleplayer physics", Anchor.Centre, OnWidgetClick,
 					     g => ((SinglePlayerServer)network).physics.Enabled ? "yes" : "no",
 					     (g, v) => {
 					     	((SinglePlayerServer)network).physics.Enabled = v == "yes";
@@ -72,8 +72,17 @@ namespace ClassicalSharp {
 				Make( 140, -150, "Pushback block placing", Anchor.Centre, OnWidgetClick,
 				     g => g.LocalPlayer.PushbackBlockPlacing 
 				     && g.LocalPlayer.CanPushbackBlocks ? "yes" : "no",
-				     (g, v) => { if( g.LocalPlayer.CanPushbackBlocks) 
-				     		g.LocalPlayer.PushbackBlockPlacing = v == "yes"; }),
+				     (g, v) => { 
+				     	if( g.LocalPlayer.CanPushbackBlocks)
+				     		g.LocalPlayer.PushbackBlockPlacing = v == "yes"; 
+				     }),
+				
+				Make( -140, -150, "Show hover names", Anchor.Centre, OnWidgetClick,
+				     g => g.Players.ShowHoveredNames ? "yes" : "no",
+				     (g, v) => { 
+				     	g.Players.ShowHoveredNames = v == "yes";
+				     	Options.Set( OptionsKey.ShowHoveredNames, v == "yes" );
+				     }),
 				
 				Make( 0, 5, "Back to menu", Anchor.BottomOrRight,
 				     (g, w) => g.SetNewScreen( new PauseScreen( g ) ), null, null ),
@@ -91,7 +100,8 @@ namespace ClassicalSharp {
 				new BooleanValidator(),
 				
 				network.IsSinglePlayer ? new BooleanValidator() : null,
-				new BooleanValidator()
+				new BooleanValidator(),
+				new BooleanValidator(),
 			};
 			okayIndex = buttons.Length - 1;
 		}

ClassicalSharp/Entities/EntityList.cs

@@ -9,18 +9,23 @@ namespace ClassicalSharp {
 		public const int MaxCount = 256;
 		public Player[] Players = new Player[MaxCount];
 		public Game game;
+		uint[] doIntersect;
+		
+		/// <summary> Whether the names of entities that the player is looking at
+		/// should be rendered through everything else without depth testing. </summary>
+		public bool ShowHoveredNames;
 		
 		public EntityList( Game game ) {
 			this.game = game;
 			game.Events.ChatFontChanged += ChatFontChanged;
+			doIntersect = new uint[MaxCount / 32];
 		}
 		
 		/// <summary> Performs a tick call for all player entities contained in this list. </summary>
 		public void Tick( double delta ) {
 			for( int i = 0; i < Players.Length; i++ ) {
-				if( Players[i] != null ) {
-					Players[i].Tick( delta );
-				}
+				if( Players[i] == null ) continue;
+				Players[i].Tick( delta );
 			}
 		}
 		
@@ -29,23 +34,57 @@ namespace ClassicalSharp {
 			api.Texturing = true;
 			api.AlphaTest = true;
 			for( int i = 0; i < Players.Length; i++ ) {
-				if( Players[i] != null )
-					Players[i].RenderModel( delta, t );
+				if( Players[i] == null ) continue;
+				Players[i].RenderModel( delta, t );
 			}
 			api.Texturing = false;
 			api.AlphaTest = false;
 		}
 		
-		/// <summary> Renders the names of all player entities contained in this list. </summary>
+		/// <summary> Renders the names of all player entities contained in this list.<br/>
+		/// If ShowHoveredNames is false, this method only renders names of entities that are
+		/// not currently being looked at by the user. </summary>
 		public void RenderNames( IGraphicsApi api, double delta, float t ) {
 			api.Texturing = true;
 			api.AlphaTest = true;
+			LocalPlayer localP = game.LocalPlayer;
+			Vector3 eyePos = localP.EyePosition;
+			Vector3 dir = Utils.GetDirVector( localP.YawRadians, localP.PitchRadians );
+			for( int i = 0; i < doIntersect.Length; i++ )
+				doIntersect[i] = 0;
+			
 			for( int i = 0; i < Players.Length; i++ ) {
-				if( Players[i] != null )
+				if( Players[i] == null ) continue;
+				float t0, t1;
+				Player p = Players[i];
+				
+				if( !ShowHoveredNames || 
+				   !Intersection.RayIntersectsRotatedBox( eyePos, dir, p, out t0, out t1 ) ) {
+					Players[i].RenderName();
+				} else {
+					doIntersect[i >> 5] |= (uint)(1 << (i & 0x1F));
+				}
+			}
+			api.Texturing = false;
+			api.AlphaTest = false;
+		}
+		
+		public void RenderHoveredNames( IGraphicsApi api, double delta, float t ) {
+			if( !ShowHoveredNames ) return;
+			api.Texturing = true;
+			api.AlphaTest = true;
+			api.DepthTest = false;
+			
+			for( int i = 0; i < Players.Length; i++ ) {
+				if( Players[i] == null ) continue;
+				
+				bool draw = (doIntersect[i >> 5] & (uint)(1 << (i & 0x1F))) != 0;	
+				if( draw )
 					Players[i].RenderName();
 			}
 			api.Texturing = false;
 			api.AlphaTest = false;
+			api.DepthTest = true;
 		}
 		
 		void ChatFontChanged( object sender, EventArgs e ) {
@@ -74,6 +113,7 @@ namespace ClassicalSharp {
 			for( int i = 0; i < Players.Length - 1; i++ ) { // -1 because we don't want to pick against local player
 				Player p = Players[i];
 				if( p == null ) continue;
+				
 				float t0, t1;
 				if( Intersection.RayIntersectsRotatedBox( eyePos, dir, p, out t0, out t1 ) ) {
 					if( t0 < closestDist && closestDist < localP.ReachDistance ) {
@@ -88,7 +128,7 @@ namespace ClassicalSharp {
 		/// <summary> Gets or sets the player entity for the specified id. </summary>
 		public Player this[int id] {
 			get { return Players[id]; }
-			set { 
+			set {
 				Players[id] = value;
 				if( value != null )
 					value.ID = (byte)id;

ClassicalSharp/Game/Game.cs

@@ -113,6 +113,7 @@ namespace ClassicalSharp {
 			
 			Options.Load();
 			AcceptedUrls.Load();
+			Players.ShowHoveredNames = Options.GetBool( OptionsKey.ShowHoveredNames, true );
 			ViewDistance = Options.GetInt( OptionsKey.ViewDist, 16, 4096, 512 );
 			InputHandler = new InputHandler( this );
 			Chat = new ChatLog( this );
@@ -244,6 +245,7 @@ namespace ClassicalSharp {
 				MapRenderer.Render( e.Time );
 				SelectionManager.Render( e.Time );
 				WeatherRenderer.Render( e.Time );
+				Players.RenderHoveredNames( Graphics, e.Time, t );
 				
 				bool left = IsMousePressed( MouseButton.Left );
 				bool middle = IsMousePressed( MouseButton.Middle );

ClassicalSharp/Utils/Options.cs

@@ -15,6 +15,7 @@ namespace ClassicalSharp {
 		public const string ArialChatFont = "arialchatfont";
 		public const string DefaultTexturePack = "defaulttexpack";
 		public const string SingleplayerPhysics = "singleplayerphysics";
+		public const string ShowHoveredNames = "showhoverednames";
 		
 		public const string MouseLeft = "mouseleft";
 		public const string MouseMiddle = "mousemiddle";