building footprints

OpenRa.Game/GameRules/Footprint.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.IO;
+using OpenRa.Game.Graphics;
+
+namespace OpenRa.Game.GameRules
+{
+	class Footprint
+	{
+		Dictionary<string, string[]> buildingFootprints;
+
+		public string[] GetFootprint(string name)
+		{
+			string[] val;
+			if (!buildingFootprints.TryGetValue(name, out val))
+				buildingFootprints.TryGetValue("*", out val);
+			return val;
+		}
+
+		public Footprint(Stream s)
+		{
+			var lines = Util.ReadAllLines(s).Where(a => !a.StartsWith("#"));
+
+			Func<string,string[]> words = 
+				b => b.Split( new[] { ' ', '\t' }, 
+					StringSplitOptions.RemoveEmptyEntries );
+
+			var buildings = lines
+				.Select(a => a.Split(':'))
+				.SelectMany(a => words(a[1])
+					.Select( b => new { Name=b, Pat=words(a[0]) } ));
+
+			buildingFootprints = buildings
+				.ToDictionary(a => a.Name, a => a.Pat);
+		}
+	}
+}