Port map difficulty to new options backend.

OpenRA.Game/Network/Session.cs

@@ -192,7 +192,6 @@ namespace OpenRA.Network
 			public int OrderLatency = 3; // net tick frames (x 120 = ms)
 			public int RandomSeed = 0;
 			public bool AllowSpectators = true;
-			public string Difficulty;
 			public string GameSpeedType = "default";
 			public bool AllowVersionMismatch;
 			public string GameUid;

OpenRA.Mods.Common/Scripting/Global/MapGlobal.cs

@@ -105,7 +105,18 @@ namespace OpenRA.Mods.Common.Scripting
 		public bool IsSinglePlayer { get { return Context.World.LobbyInfo.IsSinglePlayer; } }
 
 		[Desc("Returns the difficulty selected by the player before starting the mission.")]
-		public string Difficulty { get { return Context.World.LobbyInfo.GlobalSettings.Difficulty; } }
+		public string Difficulty
+		{
+			get
+			{
+				Game.Debug("Map script is using deprecated Map.Difficulty API. This should be changed to Map.LobbyOption(\"difficulty\").");
+				Log.Write("lua", "Map script is using deprecated Map.Difficulty API. This should be changed to Map.LobbyOption(\"difficulty\").");
+				var option = Context.World.WorldActor.TraitsImplementing<ScriptLobbyDropdown>()
+					.FirstOrDefault(sld => sld.Info.ID == "difficulty");
+
+				return option != null ? option.Info.Values[option.Value] : null;
+			}
+		}
 
 		[Desc("Returns the value of a `ScriptLobbyDropdown` selected in the game lobby.")]
 		public LuaValue LobbyOption(string id)

OpenRA.Mods.Common/ServerTraits/LobbyCommands.cs

@@ -506,39 +506,6 @@ namespace OpenRA.Mods.Common.Server
 						return true;
 					}
 				},
-				{ "difficulty",
-					s =>
-					{
-						if (server.LobbyInfo.GlobalSettings.Difficulty == s)
-							return true;
-
-						if (!client.IsAdmin)
-						{
-							server.SendOrderTo(conn, "Message", "Only the host can set that option.");
-							return true;
-						}
-
-						var mapOptions = server.Map.Rules.Actors["world"].TraitInfo<MapOptionsInfo>();
-						if (mapOptions.DifficultyLocked || !mapOptions.Difficulties.Any())
-						{
-							server.SendOrderTo(conn, "Message", "Map has disabled difficulty configuration.");
-							return true;
-						}
-
-						if (s != null && !mapOptions.Difficulties.Contains(s))
-						{
-							server.SendOrderTo(conn, "Message", "Invalid difficulty selected: {0}".F(s));
-							server.SendOrderTo(conn, "Message", "Supported values: {0}".F(mapOptions.Difficulties.JoinWith(", ")));
-							return true;
-						}
-
-						server.LobbyInfo.GlobalSettings.Difficulty = s;
-						server.SyncLobbyGlobalSettings();
-						server.SendMessage("{0} changed difficulty to {1}.".F(client.Name, s));
-
-						return true;
-					}
-				},
 				{ "gamespeed",
 					s =>
 					{

OpenRA.Mods.Common/Traits/World/MapOptions.cs

@@ -30,15 +30,6 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Prevent the tech level from being changed in the lobby.")]
 		public readonly bool TechLevelLocked = false;
 
-		[Desc("Difficulty levels supported by the map.")]
-		public readonly string[] Difficulties = { };
-
-		[Desc("Default difficulty level.")]
-		public readonly string Difficulty = null;
-
-		[Desc("Prevent the difficulty from being changed in the lobby.")]
-		public readonly bool DifficultyLocked = false;
-
 		IEnumerable<LobbyOption> ILobbyOptions.LobbyOptions(Ruleset rules)
 		{
 			yield return new LobbyBooleanOption("shortgame", "Short Game", ShortGameEnabled, ShortGameLocked);

OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs

@@ -94,6 +94,8 @@ namespace OpenRA.Mods.Common.UtilityCommands
 
 		internal static void UpgradeActorRules(int engineVersion, ref List<MiniYamlNode> nodes, MiniYamlNode parent, int depth)
 		{
+			var addNodes = new List<MiniYamlNode>();
+
 			foreach (var node in nodes)
 			{
 				if (engineVersion < 20160515)
@@ -146,8 +148,48 @@ namespace OpenRA.Mods.Common.UtilityCommands
 					}
 				}
 
+				// Map difficulty configuration was split to a generic trait
+				if (engineVersion < 20160614 && node.Key.StartsWith("MapOptions"))
+				{
+					var difficultiesNode = node.Value.Nodes.FirstOrDefault(n => n.Key == "Difficulties");
+					if (difficultiesNode != null)
+					{
+						var difficulties = FieldLoader.GetValue<string[]>("Difficulties", difficultiesNode.Value.Value)
+							.ToDictionary(d => d.Replace(" ", "").ToLowerInvariant(), d => d);
+						node.Value.Nodes.Remove(difficultiesNode);
+
+						var childNodes = new List<MiniYamlNode>()
+						{
+							new MiniYamlNode("ID", "difficulty"),
+							new MiniYamlNode("Label", "Difficulty"),
+							new MiniYamlNode("Values", new MiniYaml("", difficulties.Select(kv => new MiniYamlNode(kv.Key, kv.Value)).ToList()))
+						};
+
+						var difficultyNode = node.Value.Nodes.FirstOrDefault(n => n.Key == "Difficulty");
+						if (difficultyNode != null)
+						{
+							childNodes.Add(new MiniYamlNode("Default", difficultyNode.Value.Value.Replace(" ", "").ToLowerInvariant()));
+							node.Value.Nodes.Remove(difficultyNode);
+						}
+						else
+							childNodes.Add(new MiniYamlNode("Default", difficulties.Keys.First()));
+
+						var lockedNode = node.Value.Nodes.FirstOrDefault(n => n.Key == "DifficultyLocked");
+						if (lockedNode != null)
+						{
+							childNodes.Add(new MiniYamlNode("Locked", lockedNode.Value.Value));
+							node.Value.Nodes.Remove(lockedNode);
+						}
+
+						addNodes.Add(new MiniYamlNode("ScriptLobbyDropdown@difficulty", new MiniYaml("", childNodes)));
+					}
+				}
+
 				UpgradeActorRules(engineVersion, ref node.Value.Nodes, node, depth + 1);
 			}
+
+			foreach (var a in addNodes)
+				nodes.Add(a);
 		}
 
 		internal static void UpgradeWeaponRules(int engineVersion, ref List<MiniYamlNode> nodes, MiniYamlNode parent, int depth)

OpenRA.Mods.Common/Widgets/Logic/Lobby/LobbyLogic.cs

@@ -368,6 +368,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				{ "TECHLEVEL", "techlevel" },
 				{ "STARTINGUNITS", "startingunits" },
 				{ "STARTINGCASH", "startingcash" },
+				{ "DIFFICULTY", "difficulty" }
 			};
 
 			var allOptions = new CachedTransform<MapPreview, LobbyOption[]>(
@@ -423,35 +424,6 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				}
 			}
 
-			var difficulty = optionsBin.GetOrNull<DropDownButtonWidget>("DIFFICULTY_DROPDOWNBUTTON");
-			if (difficulty != null)
-			{
-				var mapOptions = new CachedTransform<MapPreview, MapOptionsInfo>(
-					map => map.Rules.Actors["world"].TraitInfo<MapOptionsInfo>());
-
-				difficulty.IsVisible = () => Map.RulesLoaded && mapOptions.Update(Map).Difficulties.Any();
-				difficulty.IsDisabled = () => configurationDisabled() || mapOptions.Update(Map).DifficultyLocked;
-				difficulty.GetText = () => orderManager.LobbyInfo.GlobalSettings.Difficulty;
-				difficulty.OnMouseDown = _ =>
-				{
-					var options = mapOptions.Update(Map).Difficulties.Select(d => new DropDownOption
-					{
-						Title = d,
-						IsSelected = () => orderManager.LobbyInfo.GlobalSettings.Difficulty == d,
-						OnClick = () => orderManager.IssueOrder(Order.Command("difficulty {0}".F(d)))
-					});
-					Func<DropDownOption, ScrollItemWidget, ScrollItemWidget> setupItem = (option, template) =>
-					{
-						var item = ScrollItemWidget.Setup(template, option.IsSelected, option.OnClick);
-						item.Get<LabelWidget>("LABEL").GetText = () => option.Title;
-						return item;
-					};
-					difficulty.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", options.Count() * 30, options, setupItem);
-				};
-
-				optionsBin.Get<LabelWidget>("DIFFICULTY_DESC").IsVisible = difficulty.IsVisible;
-			}
-
 			var gameSpeed = optionsBin.GetOrNull<DropDownButtonWidget>("GAMESPEED_DROPDOWNBUTTON");
 			if (gameSpeed != null)
 			{

OpenRA.Mods.Common/Widgets/Logic/MissionBrowserLogic.cs

@@ -196,7 +196,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 
 			// Cache the rules on a background thread to avoid jank
 			var difficultyDisabled = true;
-			var difficulties = new string[0];
+			var difficulties = new Dictionary<string, string>();
 
 			var briefingVideo = "";
 			var briefingVideoVisible = false;
@@ -206,11 +206,15 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 
 			new Thread(() =>
 			{
-				var mapOptions = preview.Rules.Actors["world"].TraitInfo<MapOptionsInfo>();
+				var mapDifficulty = preview.Rules.Actors["world"].TraitInfos<ScriptLobbyDropdownInfo>()
+					.FirstOrDefault(sld => sld.ID == "difficulty");
 
-				difficulty = mapOptions.Difficulty ?? mapOptions.Difficulties.FirstOrDefault();
+				if (mapDifficulty != null)
-				difficulties = mapOptions.Difficulties;
+				{
-				difficultyDisabled = mapOptions.DifficultyLocked || mapOptions.Difficulties.Length <= 1;
+					difficulty = mapDifficulty.Default;
+					difficulties = mapDifficulty.Values;
+					difficultyDisabled = mapDifficulty.Locked;
+				}
 
 				var missionData = preview.Rules.Actors["world"].TraitInfoOrDefault<MissionDataInfo>();
 				if (missionData != null)
@@ -245,15 +249,16 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 
 			if (difficultyButton != null)
 			{
+				var difficultyName = new CachedTransform<string, string>(id => id == null || !difficulties.ContainsKey(id) ? "Normal" : difficulties[id]);
 				difficultyButton.IsDisabled = () => difficultyDisabled;
-				difficultyButton.GetText = () => difficulty ?? "Normal";
+				difficultyButton.GetText = () => difficultyName.Update(difficulty);
 				difficultyButton.OnMouseDown = _ =>
 				{
-					var options = difficulties.Select(d => new DropDownOption
+					var options = difficulties.Select(kv => new DropDownOption
 					{
-						Title = d,
+						Title = kv.Value,
-						IsSelected = () => difficulty == d,
+						IsSelected = () => difficulty == kv.Key,
-						OnClick = () => difficulty = d
+						OnClick = () => difficulty = kv.Key
 					});
 
 					Func<DropDownOption, ScrollItemWidget, ScrollItemWidget> setupItem = (option, template) =>
@@ -361,7 +366,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 
 			var orders = new[] {
 				Order.Command("gamespeed {0}".F(gameSpeed)),
-				Order.Command("difficulty {0}".F(difficulty)),
+				Order.Command("option difficulty {0}".F(difficulty)),
 				Order.Command("state {0}".F(Session.ClientState.Ready))
 			};
 

mods/cnc/maps/funpark01/rules.yaml

@@ -8,9 +8,15 @@ World:
 		BriefingVideo: generic.vqa
 		StartVideo: dino.vqa
 	MapOptions:
-		Difficulties: Easy, Normal
 		ShortGameLocked: True
 		ShortGameEnabled: False
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+		Default: easy
 
 Player:
 	EnemyWatcher:

mods/cnc/maps/gdi05a/rules.yaml

@@ -11,7 +11,6 @@ World:
 		WinVideo: nodlose.vqa
 		LossVideo: gdilose.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
 		ShortGameLocked: True
 		ShortGameEnabled: False
 	SmudgeLayer@SCORCH:
@@ -27,6 +26,14 @@ World:
 			41,54: cr1,0
 			13,52: cr1,0
 			11,51: cr1,0
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 Player:
 	EnemyWatcher:

mods/cnc/maps/gdi06/rules.yaml

@@ -31,9 +31,16 @@ World:
 		WinVideo: sabotage.vqa
 		LossVideo: gdilose.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
 		ShortGameLocked: True
 		ShortGameEnabled: True
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 Player:
 	PlayerResources:

mods/cnc/maps/nod09/rules.yaml

@@ -9,7 +9,6 @@ World:
 		LossVideo: banner.vqa
 		BriefingVideo: nod9.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
 	SmudgeLayer@SCORCH:
 		InitialSmudges:
 			20,55: sc2,0
@@ -29,6 +28,14 @@ World:
 			8,55: cr1,0
 			8,54: cr1,0
 			7,54: cr1,0
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 Player:
 	PlayerResources:

mods/d2k/maps/atreides-01a/rules.yaml

@@ -10,7 +10,14 @@ World:
 		BriefingVideo: A_BR01_E.VQA
 	MapOptions:
 		TechLevel: Low
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 construction_yard:
 	Production:

mods/d2k/maps/atreides-01b/rules.yaml

@@ -10,7 +10,14 @@ World:
 		BriefingVideo: A_BR01_E.VQA
 	MapOptions:
 		TechLevel: Low
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 construction_yard:
 	Production:

mods/d2k/maps/atreides-02a/rules.yaml

@@ -10,7 +10,14 @@ World:
 		BriefingVideo: A_BR02_E.VQA
 	MapOptions:
 		TechLevel: Low
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 carryall.reinforce:
 	Cargo:

mods/d2k/maps/atreides-02b/rules.yaml

@@ -10,7 +10,14 @@ World:
 		BriefingVideo: A_BR02_E.VQA
 	MapOptions:
 		TechLevel: Low
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 carryall.reinforce:
 	Cargo:

mods/d2k/maps/atreides-03a/rules.yaml

@@ -10,7 +10,14 @@ World:
 		BriefingVideo: A_BR03_E.VQA
 	MapOptions:
 		TechLevel: Low
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 carryall.reinforce:
 	Cargo:

mods/ra/maps/allies-02/rules.yaml

@@ -12,11 +12,18 @@ World:
 		WinVideo: montpass.vqa
 		LossVideo: frozen.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard, Real tough guy
 	SmudgeLayer@CRATER:
 		InitialSmudges:
 			60,79: cr1,0
-
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+			realtoughguy: Real tough guy
+		Default: easy
 
 HARV:
 	Buildable:

mods/ra/maps/allies-03a/rules.yaml

@@ -7,7 +7,13 @@ World:
 		WinVideo: toofar.vqa
 		LossVideo: sovtstar.vqa
 	MapOptions:
-		Difficulties: Easy, Normal
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+		Default: easy
 
 ^Building:
 	Capturable:

mods/ra/maps/allies-03b/rules.yaml

@@ -7,7 +7,13 @@ World:
 		WinVideo: toofar.vqa
 		LossVideo: sovtstar.vqa
 	MapOptions:
-		Difficulties: Easy, Normal
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+		Default: easy
 
 ^Building:
 	Capturable:

mods/ra/maps/allies-05a/rules.yaml

@@ -9,7 +9,15 @@ World:
 		LossVideo: grvestne.vqa
 	MapOptions:
 		TechLevel: Medium
-		Difficulties: Easy, Normal, Hard, Real tough guy
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+			realtoughguy: Real tough guy
+		Default: easy
 
 Camera.Truk:
 	AlwaysVisible:

mods/ra/maps/evacuation/rules.yaml

@@ -13,8 +13,13 @@ World:
 		Scripts: evacuation.lua
 	MapOptions:
 		TechLevelLocked: True
-		Difficulties: Easy, Normal
+	ScriptLobbyDropdown@difficulty:
-		Difficulty: Normal
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+		Default: normal
 
 ^Tanks:
 	Demolishable:
@@ -214,4 +219,3 @@ powerproxy.paras2:
 	AlwaysVisible:
 	ParatroopersPower:
 		DropItems: E1,E1,E1,E2,E2
-

mods/ra/maps/fort-lonestar/rules.yaml

@@ -38,9 +38,19 @@ World:
 	MapOptions:
 		TechLevelLocked: True
 		TechLevel: Unrestricted
-		Difficulties: Hard (4P), Normal (3P), Easy (2P), Very Easy (1P), Real tough guy, Endless mode
 		ShortGameLocked: True
 		ShortGameEnabled: False
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			hard(4p): Hard (4P)
+			normal(3p): Normal (3P)
+			easy(2p): Easy (2P)
+			veryeasy(1p): Very Easy (1P)
+			realtoughguy: Real tough guy
+			endlessmode: Endless mode
+		Default: hard(4p)
 
 FORTCRATE:
 	Inherits: ^Crate

mods/ra/maps/intervention/rules.yaml

@@ -8,7 +8,13 @@ World:
 	MissionData:
 		Briefing: The Soviet Air Force is flying air raids against a civilian village.\n\nWe have to do everything in our power to stop them!\n\nYour job is to establish a base on the mainland ASAP. We can prevent the village's destruction by capturing the enemy's Air Force Headquarters building. The enemy base is heavily guarded, though.  You will not have enough time to build a force big enough to overpower the Soviet defences. You will have to find a way to sneak in!\n\nGood luck, Commander!\n
 	MapOptions:
-		Difficulties: Medium, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			medium: Medium
+			hard: Hard
+		Default: medium
 
 CAMERA:
 	RevealsShroud:

mods/ra/maps/soviet-03/rules.yaml

@@ -8,7 +8,14 @@ World:
 		WinVideo: execute.vqa
 		LossVideo: take_off.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 ^TechBuilding:
 	AutoTargetIgnore:

mods/ra/maps/soviet-04a/rules.yaml

@@ -13,7 +13,14 @@ World:
 		LossVideo: allymorf.vqa
 	MapOptions:
 		TechLevel: Medium
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 AFLD:
 	ParatroopersPower@paratroopers:

mods/ra/maps/soviet-04b/rules.yaml

@@ -13,7 +13,14 @@ World:
 		LossVideo: allymorf.vqa
 	MapOptions:
 		TechLevel: Medium
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 AFLD:
 	ParatroopersPower@paratroopers:

mods/ra/maps/soviet-05/rules.yaml

@@ -13,7 +13,14 @@ World:
 		LossVideo: sovbatl.vqa
 	MapOptions:
 		TechLevel: Medium
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 AFLD:
 	ParatroopersPower@paratroopers:

mods/ra/maps/soviet-06a/rules.yaml

@@ -12,7 +12,14 @@ World:
 		WinVideo: sitduck.vqa
 		LossVideo: dpthchrg.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 APWR:
 	Buildable:

mods/ra/maps/soviet-06b/rules.yaml

@@ -12,7 +12,14 @@ World:
 		WinVideo: sitduck.vqa
 		LossVideo: dpthchrg.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 APWR:
 	Buildable:

mods/ra/maps/soviet-07/rules.yaml

@@ -8,7 +8,14 @@ World:
 		WinVideo: averted.vqa
 		LossVideo: nukestok.vqa
 	MapOptions:
-		Difficulties: Easy, Normal, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			normal: Normal
+			hard: Hard
+		Default: easy
 
 ^Infantry:
 	-GivesBounty:

mods/ra/maps/survival01/rules.yaml

@@ -8,7 +8,14 @@ World:
 	MissionData:
 		Briefing: LANDCOM 66 HQS.\nTOP SECRET.\nTO: FIELD COMMANDER A34\n\nTHE SOVIETS STARTED HEAVY ATTACKS AT OUR POSITION.\n SURVIVE AND HOLD THE BASE UNTIL OUR FRENCH ALLIES ARRIVE.\n\nCONFIRMATION CODE 5593.\n\nTRANSMISSION ENDS.
 	MapOptions:
-		Difficulties: Easy, Medium, Hard
+	ScriptLobbyDropdown@difficulty:
+		ID: difficulty
+		Label: Difficulty
+		Values:
+			easy: Easy
+			medium: Medium
+			hard: Hard
+		Default: easy
 
 powerproxy.paratroopers:
 	ParatroopersPower: