lots of experimental bits

OpenRA.Game/Traits/World/WallLoadHook.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRA.Traits
+{
+	class WallLoadHookInfo : ITraitInfo
+	{
+		public readonly int[] OverlayIndices = { };
+		public readonly string ActorType = "brik";
+
+		public object Create(Actor self) { return new WallLoadHook( self, this ); }
+	}
+
+	class WallLoadHook : ILoadWorldHook
+	{
+		WallLoadHookInfo info;
+		public WallLoadHook(Actor self, WallLoadHookInfo info)
+		{
+			this.info = info;
+		}
+
+		public void WorldLoaded(World w)
+		{
+			var map = w.Map;
+
+			for (int y = map.YOffset; y < map.YOffset + map.Height; y++)
+				for (int x = map.XOffset; x < map.XOffset + map.Width; x++)
+					if (info.OverlayIndices.Contains(w.Map.MapTiles[x, y].overlay))
+						w.CreateActor(info.ActorType, new int2(x, y), w.players[0]);	// todo: neutral player or null?
+		}
+	}
+}