Physics (#3452)

* Content side new physics structure

* BroadPhase outline done

* But we need to fix WorldAABB

* Fix static pvs AABB

* Fix import

* Rando fixes

* B is for balloon

* Change human mob hitbox to circle

* Decent movement

* Start adding friction to player controller

I think it's the best way to go about it to keep other objects somewhat consistent for physics.

* This baby can fit so many physics bugs in it.

* Slight mob mover optimisations.

* Player mover kinda works okay.

* Beginnings of testbed

* More testbed

* Circlestack bed

* Namespaces

* BB fixes

* Pull WorldAABB

* Joint pulling

* Semi-decent movement I guess.

* Pulling better

* Bullet controller + old movement

* im too dumb for this shit

* Use kinematic mob controller again

It's probably for the best TBH

* Stashed shitcode

* Remove SlipController

* In which movement code is entirely refactored

* Singularity fix

* Fix ApplyLinearImpulse

* MoveRelay fix

* Fix door collisions

* Disable subfloor collisions

Saves on broadphase a fair bit

* Re-implement ClimbController

* Zumzum's pressure

* Laggy item throwing

* Minor atmos change

* Some caching

* Optimise controllers

* Optimise CollideWith to hell and back

* Re-do throwing and tile friction

* Landing too

* Optimise controllers

* Move CCVars and other stuff swept is beautiful

* Cleanup a bunch of controllers

* Fix shooting and high pressure movement controller

* Flashing improvements

* Stuff and things

* Combat collisions

* Combat mode collisions

* Pulling distance joint again

* Cleanup physics interfaces

* More like scuffedularity

* Shit's fucked

* Haha tests go green

* Bigmoneycrab

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

Content.Server/GameObjects/Components/Projectiles/ThrownItemComponent.cs

@@ -1,118 +0,0 @@
-using Content.Server.GameObjects.EntitySystems.Click;
-using Content.Shared.GameObjects;
-using Content.Shared.Physics;
-using Robust.Server.GameObjects;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
-using Robust.Shared.Maths;
-using Robust.Shared.Physics;
-
-namespace Content.Server.GameObjects.Components.Projectiles
-{
-    [RegisterComponent]
-    internal class ThrownItemComponent : ProjectileComponent, ICollideBehavior
-    {
-        public const float DefaultThrowTime = 0.25f;
-
-        private bool _shouldCollide = true;
-        private bool _shouldStop = false;
-
-        public override string Name => "ThrownItem";
-        public override uint? NetID => ContentNetIDs.THROWN_ITEM;
-
-        /// <summary>
-        ///     User who threw the item.
-        /// </summary>
-        public IEntity User { get; set; }
-
-        void ICollideBehavior.CollideWith(IEntity entity)
-        {
-            if (!_shouldCollide || entity.Deleted) return;
-            if (entity.TryGetComponent(out PhysicsComponent collid))
-            {
-                if (!collid.Hard) // ignore non hard
-                    return;
-
-                _shouldStop = true; // hit something hard => stop after this collision
-
-                // Raise an event.
-                EntitySystem.Get<InteractionSystem>().ThrowCollideInteraction(User, Owner, entity, Owner.Transform.Coordinates);
-            }
-
-            // Stop colliding with mobs, this mimics not having enough velocity to do damage
-            // after impacting the first object.
-            // For realism this should actually be changed when the velocity of the object is less than a threshold.
-            // This would allow ricochets off walls, and weird gravity effects from slowing the object.
-            if (!Owner.Deleted && Owner.TryGetComponent(out IPhysicsComponent body) && body.PhysicsShapes.Count >= 1)
-            {
-                _shouldCollide = false;
-            }
-        }
-
-        private void StopThrow()
-        {
-            if (Deleted)
-            {
-                return;
-            }
-
-            if (Owner.TryGetComponent(out IPhysicsComponent body) && body.PhysicsShapes.Count >= 1)
-            {
-                body.PhysicsShapes[0].CollisionMask &= (int) ~CollisionGroup.ThrownItem;
-
-                if (body.TryGetController(out ThrownController controller))
-                {
-                    controller.LinearVelocity = Vector2.Zero;
-                }
-
-                body.Status = BodyStatus.OnGround;
-
-                Owner.RemoveComponent<ThrownItemComponent>();
-                EntitySystem.Get<InteractionSystem>().LandInteraction(User, Owner, Owner.Transform.Coordinates);
-            }
-        }
-
-        void ICollideBehavior.PostCollide(int collideCount)
-        {
-            if (_shouldStop && collideCount > 0)
-            {
-                StopThrow();
-            }
-        }
-
-        public void StartThrow(Vector2 direction, float speed)
-        {
-            var comp = Owner.GetComponent<IPhysicsComponent>();
-            comp.Status = BodyStatus.InAir;
-
-            var controller = comp.EnsureController<ThrownController>();
-            controller.Push(direction, speed);
-
-            EntitySystem.Get<AudioSystem>()
-                .PlayFromEntity("/Audio/Effects/toss.ogg", Owner);
-
-            StartStopTimer();
-        }
-
-        private void StartStopTimer()
-        {
-            Owner.SpawnTimer((int) (DefaultThrowTime * 1000), MaybeStopThrow);
-        }
-
-        private void MaybeStopThrow()
-        {
-            if (Deleted)
-            {
-                return;
-            }
-
-            if (IoCManager.Resolve<IPhysicsManager>().IsWeightless(Owner.Transform.Coordinates))
-            {
-                StartStopTimer();
-                return;
-            }
-
-            StopThrow();
-        }
-    }
-}