Further separation of client-specific code

Still not done here, just gonna push a commit now so I can pull this from elsewhere.

BarotraumaServer/Source/Characters/Character.cs

@@ -0,0 +1,42 @@
+using FarseerPhysics;
+using FarseerPhysics.Dynamics;
+using FarseerPhysics.Dynamics.Joints;
+using Barotrauma.Networking;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Xml.Linq;
+using Microsoft.Xna.Framework;
+
+namespace Barotrauma
+{
+    partial class Character : Entity, IDamageable, IPropertyObject, IClientSerializable, IServerSerializable
+    {
+        //the Character that the player is currently controlling
+        private const Character controlled = null;
+
+        public static Character Controlled
+        {
+            get { return controlled; }
+            set
+            {
+                //do nothing
+            }
+        }
+
+        private void InitProjSpecific(XDocument doc)
+        {
+            //do nothing
+        }
+
+        private void UpdateControlled(float deltaTime)
+        {
+            //do nothing
+        }
+
+        private void ImplodeFX()
+        {
+            //do nothing
+        }
+    }
+}