Water flow logic tweaking:

- Less fluctuation, water doesn't constantly flow back and forth through gaps.
- Flowing water pushes characters around much more heavily, and the force is applied to the collider in addition to the limbs.
- Vertical gaps don't push characters up/down unless the character is roughly above/below the gap.

+ Renamed some fields in the hull and gap classes (Volume -> WaterVolume, FullVolume -> Volume, public fields start with a capital letter)

Barotrauma/BarotraumaClient/Source/Sounds/SoundPlayer.cs

@@ -396,8 +396,8 @@ namespace Barotrauma
                 foreach (Hull hull in Hull.hullList)
                 {
                     if (hull.Submarine != targetSubmarine) continue;
-                    floodedArea += hull.Volume;
-                    totalArea += hull.FullVolume;
+                    floodedArea += hull.WaterVolume;
+                    totalArea += hull.Volume;
                 }
 
                 if (totalArea > 0.0f && floodedArea / totalArea > 0.25f) return "repair";