Fixed main path waypoints not getting mirrored in mirrored levels (cherry-picked from 295fc31).

Barotrauma/BarotraumaShared/Source/Map/Levels/Level.cs

@@ -356,7 +356,7 @@ namespace Barotrauma
             foreach (InterestingPosition positionOfInterest in positionsOfInterest)
             {
                 WayPoint wayPoint = new WayPoint(
-                    mirror ? new Vector2(borders.X - positionOfInterest.Position.X, positionOfInterest.Position.Y) : positionOfInterest.Position,
+                    positionOfInterest.Position,
                     SpawnType.Enemy,
                     submarine: null);
             }
@@ -477,6 +477,11 @@ namespace Barotrauma
                         positionsOfInterest[i].PositionType);
                 }
 
+                foreach (WayPoint waypoint in WayPoint.WayPointList)
+                {
+                    waypoint.Move(new Vector2((borders.Width / 2 - waypoint.Position.X) * 2, 0.0f));
+                }
+
                 startPosition.X = borders.Width - startPosition.X;
                 endPosition.X = borders.Width - endPosition.X;
             }