Server job assigning logic, submarine movement syncing, submarine collision improvements, spawnpoints in levels

Farseer Physics Engine 3.5/Dynamics/TimeStep.cs

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+/*
+* Original source Box2D:
+* Copyright (c) 2006-2011 Erin Catto http://www.box2d.org 
+* 
+* This software is provided 'as-is', without any express or implied 
+* warranty.  In no event will the authors be held liable for any damages 
+* arising from the use of this software. 
+* Permission is granted to anyone to use this software for any purpose, 
+* including commercial applications, and to alter it and redistribute it 
+* freely, subject to the following restrictions: 
+* 1. The origin of this software must not be misrepresented; you must not 
+* claim that you wrote the original software. If you use this software 
+* in a product, an acknowledgment in the product documentation would be 
+* appreciated but is not required. 
+* 2. Altered source versions must be plainly marked as such, and must not be 
+* misrepresented as being the original software. 
+* 3. This notice may not be removed or altered from any source distribution. 
+*/
+
+using Microsoft.Xna.Framework;
+
+namespace FarseerPhysics.Dynamics
+{
+    /// <summary>
+    /// This is an internal structure.
+    /// </summary>
+    public struct TimeStep
+    {
+        /// <summary>
+        /// Time step (Delta time)
+        /// </summary>
+        public float dt;
+
+        /// <summary>
+        /// dt * inv_dt0
+        /// </summary>
+        public float dtRatio;
+
+        /// <summary>
+        /// Inverse time step (0 if dt == 0).
+        /// </summary>
+        public float inv_dt;
+    }
+
+    /// This is an internal structure.
+    public struct Position
+    {
+        public Vector2 c;
+        public float a;
+    }
+
+    /// This is an internal structure.
+    public struct Velocity
+    {
+        public Vector2 v;
+        public float w;
+    }
+
+    /// Solver Data
+    public struct SolverData
+    {
+        public TimeStep step;
+        public Position[] positions;
+        public Velocity[] velocities;
+    }
+}