fixed #42 -- show harvester fullness in sprites

OpenRA.Mods.RA/Render/RenderHarvester.cs

@@ -0,0 +1,50 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 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.Linq;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+using OpenRA.Mods.RA.Orders;
+
+namespace OpenRA.Mods.RA.Render
+{
+	class RenderHarvesterInfo : RenderUnitInfo, Requires<HarvesterInfo>
+	{
+		public readonly string[] ImagesByFullness = { "harvempty", "harvhalf", "harv" };
+		public override object Create(ActorInitializer init) { return new RenderHarvester(init.self, this); }
+	}
+
+	class RenderHarvester : RenderUnit
+	{
+		Harvester harv;
+		RenderHarvesterInfo info;
+		
+		public RenderHarvester(Actor self, RenderHarvesterInfo info) : base(self) 
+		{
+			this.info = info;
+			
+			harv = self.Trait<Harvester>();
+			foreach( var image in info.ImagesByFullness )
+				new Animation( image );	/* just force these to get loaded upfront */
+		}
+
+		public override void Tick(Actor self)
+		{
+			var desiredState = (int)(harv.Fullness * (info.ImagesByFullness.Length - 1));
+			var desiredImage = info.ImagesByFullness[desiredState];
+
+			if (anim.Name != desiredImage)
+				anim.ChangeImage( desiredImage, "idle" );
+
+			base.Tick(self);
+		}
+	}
+}