Support custom tile size ingame

OpenRA.Game/Graphics/TerrainRenderer.cs

@@ -31,7 +31,6 @@ namespace OpenRA.Graphics
 			this.map = world.Map;
 
 			Size tileSize = new Size( Game.CellSize, Game.CellSize );
-
 			var tileMapping = new Cache<TileReference<ushort,byte>, Sprite>(
 				x => Game.modData.SheetBuilder.Add(world.TileSet.GetBytes(x), tileSize));
 
@@ -47,7 +46,7 @@ namespace OpenRA.Graphics
 				{
 					Sprite tile = tileMapping[map.MapTiles[i, j]];
 					// TODO: The zero below should explicitly refer to the terrain palette, but this code is called
-					// before the palettes are created
+					// before the palettes are created. Therefore assumes that "terrain" is the first palette to be defined
 					Util.FastCreateQuad(vertices, indices, Game.CellSize * new float2(i, j), tile, 0, nv, ni, tile.size);
 					nv += 4;
 					ni += 6;