- fixed level generation algorithm placing waypoints at unreachable positions

- changes to drowning/suffocation logic (oxygen-value drops/rises at a fixed rate depending on whether there's enough oxygen available, instead of effects "stacking")

Subsurface/Source/Map/Lights/LightManager.cs

@@ -39,7 +39,7 @@ namespace Barotrauma.Lights
         {
             lights = new List<LightSource>();
 
-            AmbientLight = new Color(80, 80, 80, 255);
+            AmbientLight = new Color(60, 60, 60, 255);
 
             visionCircle = Sprite.LoadTexture("Content/Lights/visioncircle.png");