Set up tran husks, and stop husk placement causing crashes

OpenRA.Mods.RA/Husk.cs

@@ -34,7 +34,7 @@ namespace OpenRA.Mods.RA
 		{
 			var self = init.self;
 			location = init.Get<LocationInit, CPos>();
-			PxPosition = init.Get<CenterLocationInit, PPos>();
+			PxPosition = init.Contains<CenterLocationInit>() ? init.Get<CenterLocationInit, PPos>() : Util.CenterOfCell(location);
 			Facing = init.Contains<FacingInit>() ? init.Get<FacingInit,int>() : 128;
 
 			var speed = init.Contains<HuskSpeedInit>() ? init.Get<HuskSpeedInit,int>() : 0;

mods/ra/rules/aircraft.yaml

@@ -213,6 +213,20 @@ TRAN:
 	FallsToEarth:
 		Explosion: UnitExplode
 		
+TRAN.Husk1:
+	Inherits: ^Husk
+	Tooltip:
+		Name: Husk (Transport Helicopter)
+	RenderUnit:
+		Image: tran1husk
+
+TRAN.Husk2:
+	Inherits: ^Husk
+	Tooltip:
+		Name: Husk (Transport Helicopter)
+	RenderUnit:
+		Image: tran2husk
+
 HELI:
 	Inherits: ^Helicopter
 	Buildable:

mods/ra/sequences.yaml

@@ -953,6 +953,16 @@ tran:
 		Start: 32
 		Length: 4
 		
+tran1husk:
+	idle:
+		Start: 0
+		Length: *
+
+tran2husk:
+	idle:
+		Start: 0
+		Length: *
+
 v2:
 	idle:
 		Start: 0