Added a near-indestructible ruin wall variant that has a higher chance of being used in rooms further away from the ruin entrance

Subsurface/Source/Map/Levels/Ruins/RuinStructure.cs

@@ -10,7 +10,7 @@ namespace Barotrauma.RuinGeneration
     [Flags]
     enum RuinStructureType
     {
-        Wall = 1, CorridorWall = 2, Prop = 4, Back = 8, Door=16, Hatch=32
+        Wall = 1, CorridorWall = 2, Prop = 4, Back = 8, Door=16, Hatch=32, HeavyWall=64
     }
 
     class RuinStructure
@@ -88,7 +88,6 @@ namespace Barotrauma.RuinGeneration
 
             foreach (RuinStructure ruinStructure in matchingStructures)
             {
-
                 if (randomNumber <= ruinStructure.commonness)
                 {
                     return ruinStructure;