diff --git a/OpenRA.Game/OpenRA.Game.csproj b/OpenRA.Game/OpenRA.Game.csproj
index 9ed5a1f830..6d2b122188 100755
--- a/OpenRA.Game/OpenRA.Game.csproj
+++ b/OpenRA.Game/OpenRA.Game.csproj
@@ -106,7 +106,6 @@
     <Compile Include="Network\Connection.cs" />
     <Compile Include="Network\OrderIO.cs" />
     <Compile Include="Network\OrderManager.cs" />
-    <Compile Include="PathSearch.cs" />
     <Compile Include="Selection.cs" />
     <Compile Include="Server\Connection.cs" />
     <Compile Include="Server\Exts.cs" />
@@ -136,7 +135,6 @@
     <Compile Include="Orders\IOrderGenerator.cs" />
     <Compile Include="Player.cs" />
     <Compile Include="Graphics\Sheet.cs" />
-    <Compile Include="PathFinder.cs" />
     <Compile Include="Graphics\Sequence.cs" />
     <Compile Include="Network\Order.cs" />
     <Compile Include="Graphics\SequenceProvider.cs" />
@@ -151,7 +149,6 @@
     <Compile Include="Graphics\SpriteRenderer.cs" />
     <Compile Include="Graphics\SpriteSheetBuilder.cs" />
     <Compile Include="Graphics\TerrainRenderer.cs" />
-    <Compile Include="Traits\Activities\Move.cs" />
     <Compile Include="Traits\Activities\Turn.cs" />
     <Compile Include="Traits\Building.cs" />
     <Compile Include="Traits\World\BuildingInfluence.cs" />
@@ -159,7 +156,6 @@
     <Compile Include="Traits\World\ResourceLayer.cs" />
     <Compile Include="Traits\World\ResourceType.cs" />
     <Compile Include="Traits\Selectable.cs" />
-    <Compile Include="Traits\Mobile.cs" />
     <Compile Include="Traits\Render\RenderSimple.cs" />
     <Compile Include="Traits\TraitsInterfaces.cs" />
     <Compile Include="Traits\World\UnitInfluence.cs" />
@@ -202,7 +198,6 @@
     <Compile Include="Traits\RevealsShroud.cs" />
     <Compile Include="Traits\Targetable.cs" />
     <Compile Include="Traits\Health.cs" />
-    <Compile Include="Traits\Activities\Drag.cs" />
     <Compile Include="Widgets\VqaPlayerWidget.cs" />
     <Compile Include="Widgets\Delegates\VideoPlayerDelegate.cs" />
     <Compile Include="GameRules\Settings.cs" />
diff --git a/OpenRA.Game/Support/PerfHistory.cs b/OpenRA.Game/Support/PerfHistory.cs
index 628c34e6ea..ab9fd16a44 100644
--- a/OpenRA.Game/Support/PerfHistory.cs
+++ b/OpenRA.Game/Support/PerfHistory.cs
@@ -90,7 +90,7 @@ namespace OpenRA.Support
 		}
 	}
 
-	class PerfSample : IDisposable
+	public class PerfSample : IDisposable
 	{
 		readonly Stopwatch sw = new Stopwatch();
 		readonly string Item;
diff --git a/OpenRA.Game/Traits/World/Shroud.cs b/OpenRA.Game/Traits/World/Shroud.cs
index b80596d14f..8f5ce19415 100644
--- a/OpenRA.Game/Traits/World/Shroud.cs
+++ b/OpenRA.Game/Traits/World/Shroud.cs
@@ -129,9 +129,9 @@ namespace OpenRA.Traits
 			}
 			else
 			{
-				var mobile = a.TraitOrDefault<Mobile>();
-				if (mobile != null)
-					return new[] { mobile.fromCell, mobile.toCell };
+				var ios = a.TraitOrDefault<IOccupySpace>();
+				if (ios != null)
+					return ios.OccupiedCells();
 				else
 					return new[] { (1f / Game.CellSize * a.CenterLocation).ToInt2() };
 			}
diff --git a/OpenRA.Game/World.cs b/OpenRA.Game/World.cs
index c4d71398ca..4ad76473d6 100644
--- a/OpenRA.Game/World.cs
+++ b/OpenRA.Game/World.cs
@@ -28,6 +28,8 @@ namespace OpenRA
 		List<IEffect> effects = new List<IEffect>();
 		Queue<Action<World>> frameEndActions = new Queue<Action<World>>();
 
+		public int FrameNumber { get { return orderManager.LocalFrameNumber; } }
+
 		internal readonly OrderManager orderManager;
 		public Session LobbyInfo { get { return orderManager.LobbyInfo; } }
 
@@ -49,7 +51,6 @@ namespace OpenRA
 		}
 
 		public readonly Actor WorldActor;		
-		public readonly PathFinder PathFinder;
 
 		public readonly Map Map;
 		public readonly TileSet TileSet;
@@ -109,8 +110,6 @@ namespace OpenRA
 					if (!p.Stances.ContainsKey(q))
 						p.Stances[q] = Stance.Neutral;		
 			
-			PathFinder = new PathFinder(this);
-			
 			Sound.SoundVolumeModifier = 1.0f;
 			foreach (var wlh in WorldActor.TraitsImplementing<IWorldLoaded>())
 				wlh.WorldLoaded(this);
diff --git a/OpenRA.Mods.Cnc/Missions/Gdi01Script.cs b/OpenRA.Mods.Cnc/Missions/Gdi01Script.cs
index 7bc663e9f2..7080965c39 100644
--- a/OpenRA.Mods.Cnc/Missions/Gdi01Script.cs
+++ b/OpenRA.Mods.Cnc/Missions/Gdi01Script.cs
@@ -17,7 +17,8 @@ using OpenRA.FileFormats;
 using OpenRA;
 using OpenRA.Mods.RA.Activities;
 using System;
-using OpenRA.Mods.RA;
+using OpenRA.Mods.RA;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.Cnc
 {
diff --git a/OpenRA.Mods.Cnc/TiberiumRefineryDockAction.cs b/OpenRA.Mods.Cnc/TiberiumRefineryDockAction.cs
index a3f7c4e58a..6cb5040d41 100644
--- a/OpenRA.Mods.Cnc/TiberiumRefineryDockAction.cs
+++ b/OpenRA.Mods.Cnc/TiberiumRefineryDockAction.cs
@@ -13,7 +13,8 @@ using OpenRA.Mods.RA;
 using OpenRA.Mods.RA.Activities;
 using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
-using OpenRA.Traits.Activities;
+using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.Cnc
 {
diff --git a/OpenRA.Mods.RA/Activities/Attack.cs b/OpenRA.Mods.RA/Activities/Attack.cs
index 209169dfd8..f1219747d3 100755
--- a/OpenRA.Mods.RA/Activities/Attack.cs
+++ b/OpenRA.Mods.RA/Activities/Attack.cs
@@ -11,6 +11,7 @@
 using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/Activities/DeliverOre.cs b/OpenRA.Mods.RA/Activities/DeliverOre.cs
index 3ed6e9ec78..fe3f3933c8 100755
--- a/OpenRA.Mods.RA/Activities/DeliverOre.cs
+++ b/OpenRA.Mods.RA/Activities/DeliverOre.cs
@@ -11,6 +11,7 @@
 using System.Collections.Generic;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/Activities/Enter.cs b/OpenRA.Mods.RA/Activities/Enter.cs
index d965410c7c..50e8786257 100755
--- a/OpenRA.Mods.RA/Activities/Enter.cs
+++ b/OpenRA.Mods.RA/Activities/Enter.cs
@@ -13,6 +13,7 @@ using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/Activities/Follow.cs b/OpenRA.Mods.RA/Activities/Follow.cs
index 596589ff75..6cbdda0a91 100644
--- a/OpenRA.Mods.RA/Activities/Follow.cs
+++ b/OpenRA.Mods.RA/Activities/Follow.cs
@@ -10,6 +10,7 @@
 
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/Activities/Harvest.cs b/OpenRA.Mods.RA/Activities/Harvest.cs
index 0e4428148e..332e1cf4a6 100755
--- a/OpenRA.Mods.RA/Activities/Harvest.cs
+++ b/OpenRA.Mods.RA/Activities/Harvest.cs
@@ -12,6 +12,7 @@ using System.Linq;
 using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
@@ -67,7 +68,7 @@ namespace OpenRA.Mods.RA.Activities
 			self.QueueActivity(mobile.MoveTo(
 				() =>
 				{
-					return self.World.PathFinder.FindPath(PathSearch.Search(self.World, mobileInfo, true)
+					return self.World.WorldActor.Trait<PathFinder>().FindPath(PathSearch.Search(self.World, mobileInfo, true)
 						.WithHeuristic(loc => (res.GetResource(loc) != null && harv.Resources.Contains( res.GetResource(loc).info.Name )) ? 0 : 1)
 				        .FromPoint(self.Location));
 				}));
diff --git a/OpenRA.Mods.RA/Activities/LayMines.cs b/OpenRA.Mods.RA/Activities/LayMines.cs
index 32eedf1053..49e8fe75f3 100644
--- a/OpenRA.Mods.RA/Activities/LayMines.cs
+++ b/OpenRA.Mods.RA/Activities/LayMines.cs
@@ -12,6 +12,7 @@ using System.Linq;
 using OpenRA.FileFormats;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/Activities/Leap.cs b/OpenRA.Mods.RA/Activities/Leap.cs
index fa1c653c70..9f02f8c7e5 100644
--- a/OpenRA.Mods.RA/Activities/Leap.cs
+++ b/OpenRA.Mods.RA/Activities/Leap.cs
@@ -11,6 +11,7 @@
 using System.Linq;
 using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/Activities/MoveAdjacentTo.cs b/OpenRA.Mods.RA/Activities/MoveAdjacentTo.cs
index 66bcc2f695..4d6220f204 100755
--- a/OpenRA.Mods.RA/Activities/MoveAdjacentTo.cs
+++ b/OpenRA.Mods.RA/Activities/MoveAdjacentTo.cs
@@ -13,6 +13,7 @@ using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
@@ -45,7 +46,7 @@ namespace OpenRA.Mods.RA.Activities
 			ps1.heuristic = PathSearch.DefaultEstimator( mobile.toCell );
 
 			var ps2 = PathSearch.FromPoint( self.World, mobile.Info, mobile.toCell, target.Location, true );
-			var ret = self.World.PathFinder.FindBidiPath( ps1, ps2 );
+			var ret = self.World.WorldActor.Trait<PathFinder>().FindBidiPath( ps1, ps2 );
 			if( ret.Count > 0 )
 				ret.RemoveAt( 0 );
 			return Util.SequenceActivities( mobile.MoveTo( () => ret ), this );
diff --git a/OpenRA.Mods.RA/Activities/UnloadCargo.cs b/OpenRA.Mods.RA/Activities/UnloadCargo.cs
index 49b91f8394..6755aa7939 100644
--- a/OpenRA.Mods.RA/Activities/UnloadCargo.cs
+++ b/OpenRA.Mods.RA/Activities/UnloadCargo.cs
@@ -13,6 +13,7 @@ using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
 using System.Drawing;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Activities
 {
diff --git a/OpenRA.Mods.RA/AttackMove.cs b/OpenRA.Mods.RA/AttackMove.cs
index 0418af233f..77ae56e5eb 100644
--- a/OpenRA.Mods.RA/AttackMove.cs
+++ b/OpenRA.Mods.RA/AttackMove.cs
@@ -11,6 +11,7 @@
 using System.Drawing;
 using OpenRA.Effects;
 using OpenRA.Traits;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/AttackTurreted.cs b/OpenRA.Mods.RA/AttackTurreted.cs
index 35a4c6f195..b54a632199 100644
--- a/OpenRA.Mods.RA/AttackTurreted.cs
+++ b/OpenRA.Mods.RA/AttackTurreted.cs
@@ -12,6 +12,7 @@ using System;
 using OpenRA.Mods.RA.Activities;
 using OpenRA.Traits;
 using System.Linq;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/C4Demolition.cs b/OpenRA.Mods.RA/C4Demolition.cs
index 87e1952c19..595cf8dee7 100644
--- a/OpenRA.Mods.RA/C4Demolition.cs
+++ b/OpenRA.Mods.RA/C4Demolition.cs
@@ -16,6 +16,7 @@ using OpenRA.Mods.RA.Activities;
 using OpenRA.Mods.RA.Orders;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/Crates/GiveUnitCrateAction.cs b/OpenRA.Mods.RA/Crates/GiveUnitCrateAction.cs
index b71716903f..640d30a556 100644
--- a/OpenRA.Mods.RA/Crates/GiveUnitCrateAction.cs
+++ b/OpenRA.Mods.RA/Crates/GiveUnitCrateAction.cs
@@ -12,6 +12,7 @@ using System.Collections.Generic;
 using System.Linq;
 using OpenRA.FileFormats;
 using OpenRA.Traits;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Crates
 {
diff --git a/OpenRA.Mods.RA/Harvester.cs b/OpenRA.Mods.RA/Harvester.cs
index 80b9d60524..0c8c1a27e4 100644
--- a/OpenRA.Mods.RA/Harvester.cs
+++ b/OpenRA.Mods.RA/Harvester.cs
@@ -15,7 +15,8 @@ using OpenRA.Effects;
 using OpenRA.Mods.RA.Activities;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
-using OpenRA.Mods.RA.Orders;
+using OpenRA.Mods.RA.Orders;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
@@ -65,7 +66,7 @@ namespace OpenRA.Mods.RA
 				.Where(x => x != ignore && x.HasTrait<IAcceptOre>())
 				.ToList();
 			var mi = self.Info.Traits.Get<MobileInfo>();
-			var path = self.World.PathFinder.FindPath(PathSearch.FromPoints(self.World, mi,
+			var path = self.World.WorldActor.Trait<PathFinder>().FindPath(PathSearch.FromPoints(self.World, mi,
 			                                                                refs.Select(r => r.Location + r.Trait<IAcceptOre>().DeliverOffset),
 			                                                                self.Location,
 			                                                                false));
diff --git a/OpenRA.Game/Traits/Activities/Drag.cs b/OpenRA.Mods.RA/Move/Drag.cs
old mode 100644
new mode 100755
similarity index 93%
rename from OpenRA.Game/Traits/Activities/Drag.cs
rename to OpenRA.Mods.RA/Move/Drag.cs
index 0655f3e735..8c042bc947
--- a/OpenRA.Game/Traits/Activities/Drag.cs
+++ b/OpenRA.Mods.RA/Move/Drag.cs
@@ -9,8 +9,9 @@
 #endregion
 
 using System.Collections.Generic;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits.Activities
+namespace OpenRA.Mods.RA.Move
 {
 	public class Drag : IActivity
 	{
diff --git a/OpenRA.Game/Traits/Mobile.cs b/OpenRA.Mods.RA/Move/Mobile.cs
old mode 100644
new mode 100755
similarity index 95%
rename from OpenRA.Game/Traits/Mobile.cs
rename to OpenRA.Mods.RA/Move/Mobile.cs
index da70dacd63..1650ff0945
--- a/OpenRA.Game/Traits/Mobile.cs
+++ b/OpenRA.Mods.RA/Move/Mobile.cs
@@ -17,8 +17,9 @@ using OpenRA.Traits.Activities;
 using OpenRA.FileFormats;
 using System.Diagnostics;
 using OpenRA.Orders;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits
+namespace OpenRA.Mods.RA.Move
 {
 	public class MobileInfo : ITraitInfo
 	{
@@ -180,7 +181,7 @@ namespace OpenRA.Traits
 				
 				if( !order.Queued ) self.CancelActivity();
 
-				self.QueueActivity(new Activities.Move(currentLocation, 8));
+				self.QueueActivity(new Move(currentLocation, 8));
 			
 				if (self.Owner == self.World.LocalPlayer)
 					self.World.AddFrameEndTask(w =>
diff --git a/OpenRA.Game/Traits/Activities/Move.cs b/OpenRA.Mods.RA/Move/Move.cs
similarity index 90%
rename from OpenRA.Game/Traits/Activities/Move.cs
rename to OpenRA.Mods.RA/Move/Move.cs
index 01e6f1e4f7..478e7732a1 100755
--- a/OpenRA.Game/Traits/Activities/Move.cs
+++ b/OpenRA.Mods.RA/Move/Move.cs
@@ -12,8 +12,10 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using OpenRA.Traits;
+using OpenRA.Traits.Activities;
 
-namespace OpenRA.Traits.Activities
+namespace OpenRA.Mods.RA.Move
 {
 	class Move : CancelableActivity
 	{
@@ -28,7 +30,7 @@ namespace OpenRA.Traits.Activities
 		public Move( int2 destination )
 		{
 			this.getPath = (self,mobile) =>
-				self.World.PathFinder.FindPath(
+				self.World.WorldActor.Trait<PathFinder>().FindPath(
 					PathSearch.FromPoint( self.World, mobile.Info, mobile.toCell, destination, false )
 					.WithoutLaneBias());
 			this.destination = destination;
@@ -37,7 +39,7 @@ namespace OpenRA.Traits.Activities
 
 		public Move( int2 destination, int nearEnough ) 
 		{
-			this.getPath = (self,mobile) => self.World.PathFinder.FindUnitPath( mobile.toCell, destination, self );
+			this.getPath = (self,mobile) => self.World.WorldActor.Trait<PathFinder>().FindUnitPath( mobile.toCell, destination, self );
 			this.destination = destination;
 			this.nearEnough = nearEnough;
 		}
@@ -45,9 +47,9 @@ namespace OpenRA.Traits.Activities
 		public Move(int2 destination, Actor ignoreBuilding)
 		{
 			this.getPath = (self,mobile) => 
-				self.World.PathFinder.FindPath(
+				self.World.WorldActor.Trait<PathFinder>().FindPath(
 					PathSearch.FromPoint( self.World, mobile.Info, mobile.toCell, destination, false )
-					.WithCustomBlocker( self.World.PathFinder.AvoidUnitsNear( mobile.toCell, 4, self ))
+					.WithCustomBlocker( self.World.WorldActor.Trait<PathFinder>().AvoidUnitsNear( mobile.toCell, 4, self ))
 					.WithIgnoredBuilding( ignoreBuilding ));
 
 			this.destination = destination;
@@ -57,7 +59,7 @@ namespace OpenRA.Traits.Activities
 
 		public Move( Actor target, int range )
 		{
-			this.getPath = (self,mobile) => self.World.PathFinder.FindUnitPathToRange(
+			this.getPath = (self,mobile) => self.World.WorldActor.Trait<PathFinder>().FindUnitPathToRange(
 				mobile.toCell, target.Location,
 				range, self );
 			this.destination = null;
@@ -66,7 +68,7 @@ namespace OpenRA.Traits.Activities
 
 		public Move(Target target, int range)
 		{
-			this.getPath = (self,mobile) => self.World.PathFinder.FindUnitPathToRange(
+			this.getPath = (self,mobile) => self.World.WorldActor.Trait<PathFinder>().FindUnitPathToRange(
 				mobile.toCell, Util.CellContaining(target.CenterLocation),
 				range, self);
 			this.destination = null;
diff --git a/OpenRA.Game/PathFinder.cs b/OpenRA.Mods.RA/Move/PathFinder.cs
old mode 100644
new mode 100755
similarity index 89%
rename from OpenRA.Game/PathFinder.cs
rename to OpenRA.Mods.RA/Move/PathFinder.cs
index 718c023bd1..59035f05b0
--- a/OpenRA.Game/PathFinder.cs
+++ b/OpenRA.Mods.RA/Move/PathFinder.cs
@@ -15,16 +15,17 @@ using System.Linq;
 using OpenRA.Support;
 using OpenRA.Traits;
 
-namespace OpenRA
+namespace OpenRA.Mods.RA.Move
 {
+	public class PathFinderInfo : ITraitInfo
+	{
+		public object Create( ActorInitializer init ) { return new PathFinder( init.world ); }
+	}
+
 	public class PathFinder
 	{
 		readonly World world;
-		
-		public PathFinder( World world )
-		{
-			this.world = world;
-		}
+		public PathFinder( World world ) { this.world = world; }
 
 		class CachedPath
 		{
@@ -45,8 +46,8 @@ namespace OpenRA
 				var cached = CachedPaths.FirstOrDefault(p => p.from == from && p.to == target && p.actor == self);
 				if (cached != null)
 				{
-					Log.Write("debug", "Actor {0} asked for a path from {1} tick(s) ago", self.ActorID, Game.LocalTick - cached.tick);
-					cached.tick = Game.LocalTick;
+					Log.Write("debug", "Actor {0} asked for a path from {1} tick(s) ago", self.ActorID, world.FrameNumber - cached.tick);
+					cached.tick = world.FrameNumber;
 					return new List<int2>(cached.result);
 				}
 				
@@ -61,8 +62,8 @@ namespace OpenRA
 
 				CheckSanePath2(pb, from, target);
 
-				CachedPaths.RemoveAll(p => Game.LocalTick - p.tick > MaxPathAge);
-				CachedPaths.Add(new CachedPath { from = from, to = target, actor = self, result = pb, tick = Game.LocalTick });
+				CachedPaths.RemoveAll(p => world.FrameNumber - p.tick > MaxPathAge);
+				CachedPaths.Add(new CachedPath { from = from, to = target, actor = self, result = pb, tick = world.FrameNumber });
 				return new List<int2>(pb);
 			}
 		}
@@ -98,8 +99,6 @@ namespace OpenRA
 				while (!search.queue.Empty)
 				{
 					var p = search.Expand( world );
-					PerfHistory.Increment("nodes_expanded", .01);
-
 					if (search.heuristic(p) == 0)
 						return MakePath(search.cellInfo, p);
 				}
diff --git a/OpenRA.Game/PathSearch.cs b/OpenRA.Mods.RA/Move/PathSearch.cs
similarity index 95%
rename from OpenRA.Game/PathSearch.cs
rename to OpenRA.Mods.RA/Move/PathSearch.cs
index 2d4b73e3df..5b4e5cba2c 100755
--- a/OpenRA.Game/PathSearch.cs
+++ b/OpenRA.Mods.RA/Move/PathSearch.cs
@@ -13,7 +13,7 @@ using System.Collections.Generic;
 using OpenRA.FileFormats;
 using OpenRA.Traits;
 
-namespace OpenRA
+namespace OpenRA.Mods.RA.Move
 {
 	public class PathSearch
 	{
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index c4281dff74..742baf4e1d 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -97,6 +97,11 @@
     <Compile Include="FallsToEarth.cs" />
     <Compile Include="CashTrickler.cs" />
     <Compile Include="LimitedAmmo.cs" />
+    <Compile Include="Move\Drag.cs" />
+    <Compile Include="Move\Mobile.cs" />
+    <Compile Include="Move\Move.cs" />
+    <Compile Include="Move\PathFinder.cs" />
+    <Compile Include="Move\PathSearch.cs" />
     <Compile Include="MPStartLocations.cs" />
     <Compile Include="Orders\DeployOrderTargeter.cs" />
     <Compile Include="Orders\EnterBuildingOrderTargeter.cs" />
diff --git a/OpenRA.Mods.RA/OreRefineryDockAction.cs b/OpenRA.Mods.RA/OreRefineryDockAction.cs
index 6bf34214c5..1abd6fc795 100644
--- a/OpenRA.Mods.RA/OreRefineryDockAction.cs
+++ b/OpenRA.Mods.RA/OreRefineryDockAction.cs
@@ -12,7 +12,8 @@ using OpenRA.Mods.RA.Activities;
 using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
-using System.Drawing;
+using System.Drawing;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/Passenger.cs b/OpenRA.Mods.RA/Passenger.cs
index c717a0c969..b91b989353 100644
--- a/OpenRA.Mods.RA/Passenger.cs
+++ b/OpenRA.Mods.RA/Passenger.cs
@@ -16,6 +16,7 @@ using OpenRA.Mods.RA.Activities;
 using OpenRA.Mods.RA.Orders;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/Production.cs b/OpenRA.Mods.RA/Production.cs
index 2894c486e4..238bb2e0dc 100755
--- a/OpenRA.Mods.RA/Production.cs
+++ b/OpenRA.Mods.RA/Production.cs
@@ -12,6 +12,7 @@ using System.Drawing;
 using OpenRA.FileFormats;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/Render/RenderInfantry.cs b/OpenRA.Mods.RA/Render/RenderInfantry.cs
index 472255d37c..dfadbd7425 100644
--- a/OpenRA.Mods.RA/Render/RenderInfantry.cs
+++ b/OpenRA.Mods.RA/Render/RenderInfantry.cs
@@ -12,6 +12,7 @@ using OpenRA.Mods.RA.Effects;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
 using OpenRA.Mods.RA.Activities;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA.Render
 {
diff --git a/OpenRA.Mods.RA/Repairable.cs b/OpenRA.Mods.RA/Repairable.cs
index d6c1f26d6c..638d30258b 100644
--- a/OpenRA.Mods.RA/Repairable.cs
+++ b/OpenRA.Mods.RA/Repairable.cs
@@ -16,6 +16,7 @@ using OpenRA.Traits.Activities;
 using System.Drawing;
 using System.Collections.Generic;
 using OpenRA.Mods.RA.Orders;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/OpenRA.Mods.RA/RepairableNear.cs b/OpenRA.Mods.RA/RepairableNear.cs
index cfbdd8885d..b446932985 100644
--- a/OpenRA.Mods.RA/RepairableNear.cs
+++ b/OpenRA.Mods.RA/RepairableNear.cs
@@ -15,6 +15,7 @@ using OpenRA.Traits.Activities;
 using System.Drawing;
 using System.Collections.Generic;
 using OpenRA.Mods.RA.Orders;
+using OpenRA.Mods.RA.Move;
 
 namespace OpenRA.Mods.RA
 {
diff --git a/mods/cnc/rules/system.yaml b/mods/cnc/rules/system.yaml
index b03b05132f..2f4d10df21 100644
--- a/mods/cnc/rules/system.yaml
+++ b/mods/cnc/rules/system.yaml
@@ -178,6 +178,7 @@ World:
 		Maximum: 3
 		SpawnInterval: 120
 		WaterChance: 0
+	PathFinder:
 
 CRATE:
 	Tooltip:
diff --git a/mods/ra/rules/system.yaml b/mods/ra/rules/system.yaml
index 71719fc0a9..90cd719523 100644
--- a/mods/ra/rules/system.yaml
+++ b/mods/ra/rules/system.yaml
@@ -218,6 +218,7 @@ World:
 	SpatialBins:
 		BinSize: 4
 	Shroud:
+	PathFinder:
 
 MINP:
 	Mine: