Server doesn't trust client positions

Client doesn't receive its own real position from the server yet (and I actually can't find where the code filters this information out, but since I'm doing a rewrite it probably won't matter), and since the inputs aren't sent reliably or redundantly, desync is inevitable.

Subsurface/Source/Characters/Character.cs

@@ -1565,6 +1565,8 @@ namespace Barotrauma
                         message.Write(AnimController.Dir > 0.0f);
                     }
 
+                    if (GameMain.Server != null)
+                    {
                         message.Write(Submarine != null);
 
                         //Vector2 position = Submarine == null ? SimPosition : SimPosition - Submarine.SimPosition;
@@ -1573,6 +1575,7 @@ namespace Barotrauma
 
                         message.Write(SimPosition.X);
                         message.Write(SimPosition.Y);
+                    }
 
                     networkUpdateSent = true;
 
@@ -1811,6 +1814,8 @@ namespace Barotrauma
                         return false;
                     }
 
+                    if (GameMain.Server == null)
+                    {
                         bool inSub = message.ReadBoolean();
 
                         pos.X = message.ReadFloat();
@@ -1837,6 +1842,7 @@ namespace Barotrauma
                             AnimController.CurrentHull = null;
                             Submarine = null;
                         }
+                    }
 
                     if (secondaryKeyState)
                     {
@@ -1853,8 +1859,11 @@ namespace Barotrauma
                         AnimController.TargetDir = dir < 0 ? Direction.Left : Direction.Right;
                     }
 
+                    if (GameMain.Server == null)
+                    {
                         AnimController.RefLimb.body.TargetPosition =
                             AnimController.EstimateCurrPosition(pos, (float)(NetTime.Now) - sendingTime);
+                    }
 
                     LastNetworkUpdate = sendingTime;