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.Shared/Construction/ConstructionConditions/WallmountCondition.cs

@@ -9,6 +9,7 @@ using Robust.Shared.Serialization;
 using System.Linq;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Physics;
+using Robust.Shared.Physics.Broadphase;
 
 namespace Content.Shared.Construction.ConstructionConditions
 {
@@ -34,7 +35,7 @@ namespace Content.Shared.Construction.ConstructionConditions
                 return false;
 
             // now we need to check that user actually tries to build wallmount on a wall
-            var physics = IoCManager.Resolve<IPhysicsManager>();
+            var physics = EntitySystem.Get<SharedBroadPhaseSystem>();
             var rUserToObj = new CollisionRay(userWorldPosition, userToObject.Normalized, (int) CollisionGroup.Impassable);
             var length = userToObject.Length;
             var userToObjRaycastResults = physics.IntersectRayWithPredicate(user.Transform.MapID, rUserToObj, maxLength: length,