Fix CA1852

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

@@ -29,20 +29,20 @@ namespace OpenRA.Mods.Common.Traits
 
 	public class ActorMap : IActorMap, ITick, INotifyCreated
 	{
-		class InfluenceNode
+		sealed class InfluenceNode
 		{
 			public InfluenceNode Next;
 			public SubCell SubCell;
 			public Actor Actor;
 		}
 
-		class Bin
+		sealed class Bin
 		{
 			public readonly List<Actor> Actors = new();
 			public readonly List<ProximityTrigger> ProximityTriggers = new();
 		}
 
-		class CellTrigger
+		sealed class CellTrigger
 		{
 			public readonly CPos[] Footprint;
 			public bool Dirty;
@@ -89,7 +89,7 @@ namespace OpenRA.Mods.Common.Traits
 			}
 		}
 
-		class ProximityTrigger : IDisposable
+		sealed class ProximityTrigger : IDisposable
 		{
 			public WPos TopLeft { get; private set; }
 			public WPos BottomRight { get; private set; }

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

@@ -27,12 +27,12 @@ namespace OpenRA.Mods.Common.Traits
 	}
 
 	[TraitLocation(SystemActors.World)]
-	class BridgeLayerInfo : TraitInfo
+	sealed class BridgeLayerInfo : TraitInfo
 	{
 		public override object Create(ActorInitializer init) { return new BridgeLayer(init.World); }
 	}
 
-	class BridgeLayer
+	sealed class BridgeLayer
 	{
 		readonly CellLayer<Actor> bridges;
 

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

@@ -18,14 +18,14 @@ namespace OpenRA.Mods.Common.Traits
 	[Desc("Sets a custom terrain type for cells that are obscured by back-facing cliffs.",
 		"This trait replicates the default CliffBackImpassability=2 behaviour from the TS/RA2 rules.ini.")]
 	[TraitLocation(SystemActors.World | SystemActors.EditorWorld)]
-	class CliffBackImpassabilityLayerInfo : TraitInfo
+	sealed class CliffBackImpassabilityLayerInfo : TraitInfo
 	{
 		public readonly string TerrainType = "Impassable";
 
 		public override object Create(ActorInitializer init) { return new CliffBackImpassabilityLayer(this); }
 	}
 
-	class CliffBackImpassabilityLayer : IWorldLoaded
+	sealed class CliffBackImpassabilityLayer : IWorldLoaded
 	{
 		readonly CliffBackImpassabilityLayerInfo info;
 

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

@@ -144,7 +144,7 @@ namespace OpenRA.Mods.Common.Traits
 		string Text { get; }
 	}
 
-	class OpenMapAction : IEditorAction
+	sealed class OpenMapAction : IEditorAction
 	{
 		[TranslationReference]
 		const string Opened = "notification-opened";

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

@@ -60,7 +60,7 @@ namespace OpenRA.Mods.Common.Traits
 				SeparateTeamSpawnsCheckboxLocked);
 		}
 
-		class AssignSpawnLocationsState
+		sealed class AssignSpawnLocationsState
 		{
 			public CPos[] SpawnLocations;
 			public List<int> AvailableSpawnPoints;

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

@@ -15,7 +15,7 @@ using OpenRA.Traits;
 namespace OpenRA.Mods.Common.Traits
 {
 	[TraitLocation(SystemActors.World)]
-	class StartGameNotificationInfo : TraitInfo
+	sealed class StartGameNotificationInfo : TraitInfo
 	{
 		[NotificationReference("Speech")]
 		public readonly string Notification = "StartGame";
@@ -35,7 +35,7 @@ namespace OpenRA.Mods.Common.Traits
 		public override object Create(ActorInitializer init) { return new StartGameNotification(this); }
 	}
 
-	class StartGameNotification : IWorldLoaded, INotifyGameLoaded, INotifyGameSaved
+	sealed class StartGameNotification : IWorldLoaded, INotifyGameLoaded, INotifyGameSaved
 	{
 		readonly StartGameNotificationInfo info;
 		public StartGameNotification(StartGameNotificationInfo info)

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

@@ -35,7 +35,7 @@ namespace OpenRA.Mods.Common.Traits
 
 	public sealed class TerrainLighting : ITerrainLighting
 	{
-		class LightSource
+		sealed class LightSource
 		{
 			public readonly WPos Pos;
 			public readonly CPos Cell;

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

@@ -28,7 +28,7 @@ namespace OpenRA.Mods.Common.Traits
 
 	public class WarheadDebugOverlay : IRenderAnnotations
 	{
-		class WHImpact
+		sealed class WHImpact
 		{
 			public readonly WPos CenterPosition;
 			public readonly WDist[] Range;