Disable lane bias on gunboat and lst

OpenRA.Game/PathSearch.cs

@@ -61,13 +61,19 @@ namespace OpenRA
 			return this;
 		}
 		
+		public PathSearch WithoutLaneBias()
+		{
+			LaneBias = 0f;
+			return this;
+		}
+		
 		public PathSearch FromPoint(int2 from)
 		{
 			AddInitialCell( self.World, from );
 			return this;
 		}
 		
-		const float LaneBias = .5f;
+		float LaneBias = .5f;
 
 		public int2 Expand( World world )
 		{

OpenRA.Game/Traits/Activities/Move.cs

@@ -37,6 +37,19 @@ namespace OpenRA.Traits.Activities
 				Game.world.SharedRandom.Next(-spreadTicksBeforePathing, spreadTicksBeforePathing);
 		}
 
+		// Scriptable move order
+		// Ignores lane bias and nearby units
+		public Move( int2 destination ) 
+			: this()
+		{
+			this.getPath = (self,mobile) =>
+				self.World.PathFinder.FindPath(
+					PathSearch.FromPoint( self, mobile.toCell, destination, false )
+					.WithoutLaneBias());
+			this.destination = destination;
+			this.nearEnough = 0;
+		}
+
 		public Move( int2 destination, int nearEnough ) 
 			: this()
 		{
@@ -45,7 +58,7 @@ namespace OpenRA.Traits.Activities
 			this.destination = destination;
 			this.nearEnough = nearEnough;
 		}
-
+		
 		public Move(int2 destination, Actor ignoreBuilding)
 			: this()
 		{