Updated to MonoGame 3.6 + Directory refactor

- Barotrauma's projects are in the Barotrauma directory
- All libraries are in the Libraries directory
- MonoGame is now managed by NuGet, rather than referenced from the installed files (TODO: consider using PCL for easier cross-platform development?)
- NuGet libraries are not included in the repo, as getting the latest versions automatically should be preferred
- Removed Content/effects.mgfx as it didn't seem to be used anywhere
- Removed some references to Subsurface directory
- Renamed Launcher2 to Launcher

Libraries/Farseer Physics Engine 3.5/ConvertUnits.cs

@@ -0,0 +1,108 @@
+/*
+* Farseer Physics Engine:
+* Copyright (c) 2012 Ian Qvist
+*/
+
+using Microsoft.Xna.Framework;
+
+namespace FarseerPhysics
+{
+    /// <summary>
+    /// Convert units between display and simulation units.
+    /// </summary>
+    public static class ConvertUnits
+    {
+        private static float _displayUnitsToSimUnitsRatio = 100f;
+        private static float _simUnitsToDisplayUnitsRatio = 1 / _displayUnitsToSimUnitsRatio;
+
+        public static void SetDisplayUnitToSimUnitRatio(float displayUnitsPerSimUnit)
+        {
+            _displayUnitsToSimUnitsRatio = displayUnitsPerSimUnit;
+            _simUnitsToDisplayUnitsRatio = 1 / displayUnitsPerSimUnit;
+        }
+
+        public static float ToDisplayUnits(float simUnits)
+        {
+            return simUnits * _displayUnitsToSimUnitsRatio;
+        }
+
+        public static float ToDisplayUnits(int simUnits)
+        {
+            return simUnits * _displayUnitsToSimUnitsRatio;
+        }
+
+        public static Vector2 ToDisplayUnits(Vector2 simUnits)
+        {
+            return simUnits * _displayUnitsToSimUnitsRatio;
+        }
+
+        public static void ToDisplayUnits(ref Vector2 simUnits, out Vector2 displayUnits)
+        {
+            Vector2.Multiply(ref simUnits, _displayUnitsToSimUnitsRatio, out displayUnits);
+        }
+
+        public static Vector3 ToDisplayUnits(Vector3 simUnits)
+        {
+            return simUnits * _displayUnitsToSimUnitsRatio;
+        }
+
+        public static Vector2 ToDisplayUnits(float x, float y)
+        {
+            return new Vector2(x, y) * _displayUnitsToSimUnitsRatio;
+        }
+
+        public static void ToDisplayUnits(float x, float y, out Vector2 displayUnits)
+        {
+            displayUnits = Vector2.Zero;
+            displayUnits.X = x * _displayUnitsToSimUnitsRatio;
+            displayUnits.Y = y * _displayUnitsToSimUnitsRatio;
+        }
+
+        public static float ToSimUnits(float displayUnits)
+        {
+            return displayUnits * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static float ToSimUnits(double displayUnits)
+        {
+            return (float)displayUnits * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static float ToSimUnits(int displayUnits)
+        {
+            return displayUnits * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static Vector2 ToSimUnits(Vector2 displayUnits)
+        {
+            return displayUnits * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static Vector3 ToSimUnits(Vector3 displayUnits)
+        {
+            return displayUnits * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static void ToSimUnits(ref Vector2 displayUnits, out Vector2 simUnits)
+        {
+            Vector2.Multiply(ref displayUnits, _simUnitsToDisplayUnitsRatio, out simUnits);
+        }
+
+        public static Vector2 ToSimUnits(float x, float y)
+        {
+            return new Vector2(x, y) * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static Vector2 ToSimUnits(double x, double y)
+        {
+            return new Vector2((float)x, (float)y) * _simUnitsToDisplayUnitsRatio;
+        }
+
+        public static void ToSimUnits(float x, float y, out Vector2 simUnits)
+        {
+            simUnits = Vector2.Zero;
+            simUnits.X = x * _simUnitsToDisplayUnitsRatio;
+            simUnits.Y = y * _simUnitsToDisplayUnitsRatio;
+        }
+    }
+}