generalize rough cursor to be customizable for any terrain type

OpenRA.FileFormats/Map/TileSet.cs

@@ -23,6 +23,7 @@ namespace OpenRA.FileFormats
 		public string[] AcceptsSmudgeType = { };
 		public bool IsWater = false;
 		public Color Color;
+		public string CustomCursor;
 
 		public TerrainTypeInfo() {}
 		public TerrainTypeInfo(MiniYaml my) { FieldLoader.Load(this, my); }

OpenRA.Mods.RA/Move/Mobile.cs

@@ -456,8 +456,10 @@ namespace OpenRA.Mods.RA.Move
 			{
 				IsQueued = forceQueued;
 				cursor = "move";
-				if (self.World.LocalPlayer.Shroud.IsExplored(location) && self.World.GetTerrainType(location) == "Rough")
-					cursor = "move-rough";
+
+				if (self.World.LocalPlayer.Shroud.IsExplored(location))
+					cursor = self.World.GetTerrainInfo(location).CustomCursor ?? cursor;
+
 				if (!self.World.Map.IsInMap(location) || (self.World.LocalPlayer.Shroud.IsExplored(location) &&
 						unitType.MovementCostForCell(self.World, location) == int.MaxValue))
 					cursor = "move-blocked";

mods/d2k/tilesets/arrakis.yaml

@@ -31,6 +31,7 @@ Terrain:
 		AcceptsSmudgeType:
 		IsWater: False
 		Color: 255,88,116,116
+		CustomCursor: move-rough
 	TerrainType@Concrete:
 		Type: Concrete
 		AcceptsSmudgeType:
@@ -4788,4 +4789,4 @@ Templates:
 		PickAny: False
 		Tiles:
 			0: Rough
-			1: Rough
+			1: Rough