Allow maps/mods to properly disable fog or shroud (or both).

OpenRA.Game/Graphics/ShroudRenderer.cs

@@ -16,6 +16,7 @@ namespace OpenRA.Graphics
 	public class ShroudRenderer
 	{
 		Map map;
+		ShroudInfo shroudInfo;
 		Sprite[] shadowBits = Game.modData.SpriteLoader.LoadAllSprites("shadow");
 		Sprite[,] sprites, fogSprites;
 		int shroudHash;
@@ -46,6 +47,7 @@ namespace OpenRA.Graphics
 		public ShroudRenderer(World world)
 		{
 			this.map = world.Map;
+			shroudInfo = Rules.Info["player"].Traits.Get<ShroudInfo>();
 
 			sprites = new Sprite[map.MapSize.X, map.MapSize.Y];
 			fogSprites = new Sprite[map.MapSize.X, map.MapSize.Y];
@@ -150,7 +152,8 @@ namespace OpenRA.Graphics
 		{
 			if (initializePalettes)
 			{
-				fogPalette = wr.Palette("fog");
+				if (shroudInfo.Fog)
+					fogPalette = wr.Palette("fog");
 				shroudPalette = wr.Palette("shroud");
 				initializePalettes = false;
 			}
@@ -158,8 +161,11 @@ namespace OpenRA.Graphics
 			GenerateSprites(shroud);
 
 			var clipRect = Game.viewport.WorldBounds(wr.world);
+
+			// We draw the shroud when disabled to hide the sharp map edges
 			DrawShroud(wr, clipRect, sprites, shroudPalette);
-			if (wr.world.WorldActor.HasTrait<Fog>())
+
+			if (shroudInfo.Fog)
 				DrawShroud(wr, clipRect, fogSprites, fogPalette);
 		}
 

OpenRA.Game/OpenRA.Game.csproj

@@ -182,7 +182,6 @@
     <Compile Include="Traits\ValidateOrder.cs" />
     <Compile Include="Traits\Waypoint.cs" />
     <Compile Include="Traits\World\Country.cs" />
-    <Compile Include="Traits\World\Fog.cs" />
     <Compile Include="Traits\World\PlayerColorPalette.cs" />
     <Compile Include="Traits\World\ResourceLayer.cs" />
     <Compile Include="Traits\World\ResourceType.cs" />

OpenRA.Game/Traits/World/Fog.cs

@@ -1,20 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2013 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 OpenRA.FileFormats;
-
-namespace OpenRA.Traits
-{
-	[Desc("This tag trait will enable fog of war in ShroudRenderer.",
-	      "Don't forget about HiddenUnderFog and FrozenUnderFog.")]
-	public class FogInfo : TraitInfo<Fog> {	}
-	
-	public class Fog { }
-}

OpenRA.Game/Traits/World/Shroud.cs

@@ -18,13 +18,16 @@ namespace OpenRA.Traits
 {
 	public class ShroudInfo : ITraitInfo
 	{
-		public object Create(ActorInitializer init) { return new Shroud(init.self); }
+		public readonly bool Shroud = true;
+		public readonly bool Fog = true;
+		public object Create(ActorInitializer init) { return new Shroud(init.self, this); }
 	}
 
 	public class Shroud
 	{
-		Map map;
+		public ShroudInfo Info;
 		Actor self;
+		Map map;
 
 		int[,] visibleCells;
 		bool[,] exploredCells;
@@ -34,8 +37,9 @@ namespace OpenRA.Traits
 
 		public int Hash { get; private set; }
 
-		public Shroud(Actor self)
+		public Shroud(Actor self, ShroudInfo info)
 		{
+			Info = info;
 			this.self = self;
 			map = self.World.Map;
 
@@ -44,6 +48,9 @@ namespace OpenRA.Traits
 			foggedCells = new bool[map.MapSize.X, map.MapSize.Y];
 			self.World.ActorAdded += AddActor;
 			self.World.ActorRemoved += RemoveActor;
+
+			if (!info.Shroud)
+				ExploredBounds = map.Bounds;
 		}
 
 		void Invalidate()
@@ -270,6 +277,9 @@ namespace OpenRA.Traits
 			if (!map.IsInMap(x, y))
 				return false;
 
+			if (!Info.Shroud)
+				return true;
+
 			return foggedCells[x,y];
 		}
 
@@ -286,6 +296,9 @@ namespace OpenRA.Traits
 			if (x < 0 || x >= map.MapSize.X || y < 0 || y >= map.MapSize.Y)
 				return false;
 
+			if (!Info.Fog)
+				return true;
+
 			return visibleCells[x,y] != 0;
 		}