Merge pull request #4393 from cjshmyr/nametag

Added RenderNameTag trait for actors

CHANGELOG

@@ -84,6 +84,7 @@ NEW:
 		Added a new Launch.Replay=$FILEPATH parameter for OpenRA.Game.exe to instantly start watching a *.rep file.
 		Added HackyAI settings: ExcessPowerFactor, MinimumExcessPower, IdleBaseUnitsMaximum, RushAttackScanRadius, ProtectUnitScanRadius, RallyPointScanRadius. See the traits documentation for more information.
 		Added HitAnimPalette trait for LaserZap projectiles. Laser hit animations can now specify individual palettes. Defaults to effect palette.
+		Added RenderNameTag trait to show the player's name above an actor.
 		Fixed performance issues with units pathing to naval transports.
 		Fixed unit moving to transports that have moved.
 	Server:

OpenRA.Mods.RA/OpenRA.Mods.RA.csproj

@@ -341,6 +341,7 @@
     <Compile Include="Render\RenderUnitReload.cs" />
     <Compile Include="Render\WithBuildingExplosion.cs" />
     <Compile Include="Render\WithMuzzleFlash.cs" />
+    <Compile Include="Render\RenderNameTag.cs" />
     <Compile Include="Render\WithRotor.cs" />
     <Compile Include="Render\WithShadow.cs" />
     <Compile Include="Render\WithSmoke.cs" />

OpenRA.Mods.RA/Render/RenderNameTag.cs

@@ -0,0 +1,52 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Drawing;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Render
+{
+	class RenderNameTagInfo : ITraitInfo
+	{
+		public readonly int MaxLength = 10;
+		public object Create(ActorInitializer init) { return new RenderNameTag(init.self, this); }
+	}
+
+	class RenderNameTag : IRender
+	{
+		readonly SpriteFont font;
+		readonly Color color;
+		readonly string name;
+
+		public RenderNameTag(Actor self, RenderNameTagInfo info)
+		{
+			font = Game.Renderer.Fonts["TinyBold"];
+			color = self.Owner.Color.RGB;
+
+			if (self.Owner.PlayerName.Length > info.MaxLength)
+				name = self.Owner.PlayerName.Substring(0, info.MaxLength);
+			else
+				name = self.Owner.PlayerName;
+		}
+
+		public IEnumerable<IRenderable> Render(Actor self, WorldRenderer wr)
+		{
+			var pos = wr.ScreenPxPosition(self.CenterPosition);
+			var bounds = self.Bounds.Value;
+			bounds.Offset(pos.X, pos.Y);
+			var spaceBuffer = (int)(10 / wr.Viewport.Zoom);
+			var effectPos = wr.Position(new int2(pos.X, bounds.Y - spaceBuffer));
+
+			yield return new TextRenderable(font, effectPos, 0, color, name);
+		}
+	}
+}