Inertia (#3709)

* Some stuff

* Fix NaN angular velocity

* Optimise a bit

* Give throwing a bit of a spin

* Reality can be whatever I want

* Biffing it

* Cleanup

* Update submodule

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/Components/Items/ThrowHelper.cs

@@ -12,6 +12,8 @@ namespace Content.Server.GameObjects.Components.Items
 {
     internal static class ThrowHelper
     {
+        private const float ThrowAngularImpulse = 3.0f;
+
         /// <summary>
         ///     Tries to throw the entity if it has a physics component, otherwise does nothing.
         /// </summary>
@@ -41,6 +43,8 @@ namespace Content.Server.GameObjects.Components.Items
             if (entity.HasComponent<ItemComponent>())
             {
                 entity.EnsureComponent<ThrownItemComponent>().Thrower = user;
+                // Give it a l'il spin.
+                physicsComponent.ApplyAngularImpulse(ThrowAngularImpulse);
 
                 if (user != null)
                     EntitySystem.Get<InteractionSystem>().ThrownInteraction(user, entity);