Added QuadRenderer to render shaded/colored quads. Added DebugOverlay to World to show A* bidi search cost per cell.

OpenRA.Mods.RA/World/DebugOverlay.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using OpenRA.FileFormats;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	class DebugOverlayInfo : Traits.TraitInfo<DebugOverlay>
+	{
+	}
+
+	class DebugOverlay : IRenderOverlay, IWorldLoaded
+	{
+		int[,] layer;
+		int refreshTick;
+		World world;
+
+		public void WorldLoaded(World w)
+		{
+			this.world = w;
+			this.layer = new int[w.Map.MapSize.X, w.Map.MapSize.Y];
+			this.refreshTick = 0;
+		}
+
+		public void AddLayer(IEnumerable<Pair<CPos, int>> cellWeights, int maxWeight)
+		{
+			if (maxWeight == 0) return;
+
+			foreach (var p in cellWeights)
+				layer[p.First.X, p.First.Y] = layer[p.First.X, p.First.Y] / 2 + (p.Second * 128 / maxWeight);
+		}
+
+		public void Render(WorldRenderer wr)
+		{
+			var qr = Game.Renderer.WorldQuadRenderer;
+			bool doSwap = refreshTick - world.FrameNumber <= 0;
+			if (doSwap) refreshTick = world.FrameNumber + 20;
+
+			for (int j = world.Map.Bounds.Top; j <= world.Map.Bounds.Bottom; ++j)
+				for (int i = world.Map.Bounds.Left; i <= world.Map.Bounds.Right; ++i)
+				{
+					if (!world.Map.IsInMap(i, j)) continue;
+
+					var cell = new CPos(i, j);
+					var pix = cell.ToPPos();
+
+					var w = Math.Max(0, Math.Min(layer[i, j], 224));
+					if (doSwap)
+					{
+						layer[i, j] = layer[i, j] * 4 / 5;
+					}
+					qr.FillRect(new RectangleF(pix.X, pix.Y, Game.CellSize, Game.CellSize), Color.FromArgb(w, Color.White));
+				}
+		}
+	}
+}