Content update for ECS physics (#13291)

Content.Client/Suspicion/SuspicionRoleComponent.cs

@@ -68,7 +68,8 @@ namespace Content.Client.Suspicion
             }
 
             _overlayActive = true;
-            var overlay = new TraitorOverlay(IoCManager.Resolve<IEntityManager>(), IoCManager.Resolve<IPlayerManager>(), _resourceCache);
+            var entManager = IoCManager.Resolve<IEntityManager>();
+            var overlay = new TraitorOverlay(entManager, IoCManager.Resolve<IPlayerManager>(), _resourceCache, entManager.System<EntityLookupSystem>());
             _overlayManager.AddOverlay(overlay);
         }
 

Content.Client/Suspicion/TraitorOverlay.cs

@@ -17,6 +17,7 @@ namespace Content.Client.Suspicion
     {
         private readonly IEntityManager _entityManager;
         private readonly IPlayerManager _playerManager;
+        private readonly EntityLookupSystem _lookup;
 
         public override OverlaySpace Space => OverlaySpace.ScreenSpace;
         private readonly Font _font;
@@ -26,11 +27,12 @@ namespace Content.Client.Suspicion
         public TraitorOverlay(
             IEntityManager entityManager,
             IPlayerManager playerManager,
-            IResourceCache resourceCache)
+            IResourceCache resourceCache,
+            EntityLookupSystem lookup)
         {
             _playerManager = playerManager;
-
             _entityManager = entityManager;
+            _lookup = lookup;
 
             _font = new VectorFont(resourceCache.GetResource<FontResource>("/Fonts/NotoSans/NotoSans-Regular.ttf"), 10);
         }
@@ -77,7 +79,7 @@ namespace Content.Client.Suspicion
 
                 var (allyWorldPos, allyWorldRot) = allyXform.GetWorldPositionRotation();
 
-                var worldBox = physics.GetWorldAABB(allyWorldPos, allyWorldRot);
+                var worldBox = _lookup.GetWorldAABB(ally, allyXform);
 
                 // if not on screen, or too small, continue
                 if (!worldBox.Intersects(in viewport) || worldBox.IsEmpty())

Content.IntegrationTests/Tests/Doors/AirlockTest.cs

@@ -6,8 +6,10 @@ using Content.Shared.Doors.Components;
 using NUnit.Framework;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
+using Robust.Shared.Maths;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.IntegrationTests.Tests.Doors
 {
@@ -114,6 +116,7 @@ namespace Content.IntegrationTests.Tests.Doors
 
             var mapManager = server.ResolveDependency<IMapManager>();
             var entityManager = server.ResolveDependency<IEntityManager>();
+            var physicsSystem = entityManager.System<SharedPhysicsSystem>();
 
             PhysicsComponent physBody = null;
             EntityUid physicsDummy = default;
@@ -140,13 +143,19 @@ namespace Content.IntegrationTests.Tests.Doors
             await server.WaitIdleAsync();
 
             // Push the human towards the airlock
-            await server.WaitAssertion(() => Assert.That(physBody != null));
-            await server.WaitPost(() => physBody.LinearVelocity = (0.5f, 0));
+            await server.WaitAssertion(() => Assert.That(physBody, Is.Not.EqualTo(null)));
+            await server.WaitPost(() =>
+            {
+                physicsSystem.SetLinearVelocity(physicsDummy, new Vector2(0.5f, 0f), body: physBody);
+            });
 
             for (var i = 0; i < 240; i += 10)
             {
                 // Keep the airlock awake so they collide
-                await server.WaitPost(() => entityManager.GetComponent<PhysicsComponent>(airlock).WakeBody());
+                await server.WaitPost(() =>
+                {
+                    physicsSystem.WakeBody(airlock);
+                });
 
                 await server.WaitRunTicks(10);
                 await server.WaitIdleAsync();

Content.IntegrationTests/Tests/ShuttleTest.cs

@@ -6,6 +6,7 @@ using Robust.Shared.Map;
 using Robust.Shared.Maths;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.IntegrationTests.Tests
 {
@@ -20,7 +21,8 @@ namespace Content.IntegrationTests.Tests
             await server.WaitIdleAsync();
 
             var mapMan = server.ResolveDependency<IMapManager>();
-            var sEntities = server.ResolveDependency<IEntityManager>();
+            var entManager = server.ResolveDependency<IEntityManager>();
+            var physicsSystem = entManager.System<SharedPhysicsSystem>();
 
             EntityUid gridEnt = default;
 
@@ -30,18 +32,18 @@ namespace Content.IntegrationTests.Tests
                 var grid = mapMan.CreateGrid(mapId);
                 gridEnt = grid.Owner;
 
-                Assert.That(sEntities.HasComponent<ShuttleComponent>(gridEnt));
-                Assert.That(sEntities.TryGetComponent<PhysicsComponent>(gridEnt, out var physicsComponent));
+                Assert.That(entManager.HasComponent<ShuttleComponent>(gridEnt));
+                Assert.That(entManager.TryGetComponent<PhysicsComponent>(gridEnt, out var physicsComponent));
                 Assert.That(physicsComponent!.BodyType, Is.EqualTo(BodyType.Dynamic));
-                Assert.That(sEntities.GetComponent<TransformComponent>(gridEnt).LocalPosition, Is.EqualTo(Vector2.Zero));
-                physicsComponent.ApplyLinearImpulse(Vector2.One);
+                Assert.That(entManager.GetComponent<TransformComponent>(gridEnt).LocalPosition, Is.EqualTo(Vector2.Zero));
+                physicsSystem.ApplyLinearImpulse(gridEnt, Vector2.One, body: physicsComponent);
             });
 
             await server.WaitRunTicks(1);
 
             await server.WaitAssertion(() =>
             {
-                Assert.That<Vector2?>(sEntities.GetComponent<TransformComponent>(gridEnt).LocalPosition, Is.Not.EqualTo(Vector2.Zero));
+                Assert.That(entManager.GetComponent<TransformComponent>(gridEnt).LocalPosition, Is.Not.EqualTo(Vector2.Zero));
             });
             await pairTracker.CleanReturnAsync();
         }

Content.Server/Administration/Commands/WarpCommand.cs

@@ -9,12 +9,15 @@ using Robust.Shared.Enums;
 using Robust.Shared.Map;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.Server.Administration.Commands
 {
     [AdminCommand(AdminFlags.Admin)]
     public sealed class WarpCommand : IConsoleCommand
     {
+        [Dependency] private readonly IEntityManager _entManager = default!;
+
         public string Command => "warp";
         public string Description => "Teleports you to predefined areas on the map.";
 
@@ -37,11 +40,10 @@ namespace Content.Server.Administration.Commands
                 return;
             }
 
-            var entMan = IoCManager.Resolve<IEntityManager>();
             var location = args[0];
             if (location == "?")
             {
-                var locations = string.Join(", ", GetWarpPointNames(entMan));
+                var locations = string.Join(", ", GetWarpPointNames());
 
                 shell.WriteLine(locations);
             }
@@ -53,20 +55,19 @@ namespace Content.Server.Administration.Commands
                     return;
                 }
 
-                var mapManager = IoCManager.Resolve<IMapManager>();
-                var currentMap = entMan.GetComponent<TransformComponent>(playerEntity).MapID;
-                var currentGrid = entMan.GetComponent<TransformComponent>(playerEntity).GridUid;
+                var currentMap = _entManager.GetComponent<TransformComponent>(playerEntity).MapID;
+                var currentGrid = _entManager.GetComponent<TransformComponent>(playerEntity).GridUid;
 
-                var found = entMan.EntityQuery<WarpPointComponent>(true)
+                var found = _entManager.EntityQuery<WarpPointComponent>(true)
                     .Where(p => p.Location == location)
-                    .Select(p => (entMan.GetComponent<TransformComponent>(p.Owner).Coordinates, p.Follow))
+                    .Select(p => (_entManager.GetComponent<TransformComponent>(p.Owner).Coordinates, p.Follow))
                     .OrderBy(p => p.Item1, Comparer<EntityCoordinates>.Create((a, b) =>
                     {
                         // Sort so that warp points on the same grid/map are first.
                         // So if you have two maps loaded with the same warp points,
                         // it will prefer the warp points on the map you're currently on.
-                        var aGrid = a.GetGridUid(entMan);
-                        var bGrid = b.GetGridUid(entMan);
+                        var aGrid = a.GetGridUid(_entManager);
+                        var bGrid = b.GetGridUid(_entManager);
 
                         if (aGrid == bGrid)
                         {
@@ -83,8 +84,8 @@ namespace Content.Server.Administration.Commands
                             return 1;
                         }
 
-                        var mapA = a.GetMapId(entMan);
-                        var mapB = a.GetMapId(entMan);
+                        var mapA = a.GetMapId(_entManager);
+                        var mapB = a.GetMapId(_entManager);
 
                         if (mapA == mapB)
                         {
@@ -113,25 +114,25 @@ namespace Content.Server.Administration.Commands
                     return;
                 }
 
-                if (follow && entMan.HasComponent<GhostComponent>(playerEntity))
+                if (follow && _entManager.HasComponent<GhostComponent>(playerEntity))
                 {
-                    entMan.EntitySysManager.GetEntitySystem<FollowerSystem>().StartFollowingEntity(playerEntity, coords.EntityId);
+                    _entManager.System<FollowerSystem>().StartFollowingEntity(playerEntity, coords.EntityId);
                     return;
                 }
 
-                var xform = entMan.GetComponent<TransformComponent>(playerEntity);
+                var xform = _entManager.GetComponent<TransformComponent>(playerEntity);
                 xform.Coordinates = coords;
                 xform.AttachToGridOrMap();
-                if (entMan.TryGetComponent(playerEntity, out PhysicsComponent? physics))
+                if (_entManager.TryGetComponent(playerEntity, out PhysicsComponent? physics))
                 {
-                    physics.LinearVelocity = Vector2.Zero;
+                    _entManager.System<SharedPhysicsSystem>().SetLinearVelocity(playerEntity, Vector2.Zero, body: physics);
                 }
             }
         }
 
-        private static IEnumerable<string> GetWarpPointNames(IEntityManager entMan)
+        private IEnumerable<string> GetWarpPointNames()
         {
-            return entMan.EntityQuery<WarpPointComponent>(true)
+            return _entManager.EntityQuery<WarpPointComponent>(true)
                 .Select(p => p.Location)
                 .Where(p => p != null)
                 .OrderBy(p => p)
@@ -142,8 +143,7 @@ namespace Content.Server.Administration.Commands
         {
             if (args.Length == 1)
             {
-                var ent = IoCManager.Resolve<IEntityManager>();
-                var options = new[] { "?" }.Concat(GetWarpPointNames(ent));
+                var options = new[] { "?" }.Concat(GetWarpPointNames());
 
                 return CompletionResult.FromHintOptions(options, "<warp point | ?>");
             }

Content.Server/Administration/Systems/AdminVerbSystem.Smites.cs

@@ -47,6 +47,7 @@ using Robust.Shared.Map;
 using Robust.Shared.Map.Components;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Random;
 using Timer = Robust.Shared.Timing.Timer;
@@ -63,18 +64,20 @@ public sealed partial class AdminVerbSystem
     [Dependency] private readonly ElectrocutionSystem _electrocutionSystem = default!;
     [Dependency] private readonly EntityStorageSystem _entityStorageSystem = default!;
     [Dependency] private readonly ExplosionSystem _explosionSystem = default!;
+    [Dependency] private readonly FixtureSystem _fixtures = default!;
     [Dependency] private readonly FlammableSystem _flammableSystem = default!;
     [Dependency] private readonly GhostKickManager _ghostKickManager = default!;
     [Dependency] private readonly GodmodeSystem _godmodeSystem = default!;
     [Dependency] private readonly InventorySystem _inventorySystem = default!;
+    [Dependency] private readonly MovementSpeedModifierSystem _movementSpeedModifierSystem = default!;
     [Dependency] private readonly PolymorphableSystem _polymorphableSystem = default!;
     [Dependency] private readonly MobStateSystem _mobStateSystem = default!;
     [Dependency] private readonly MobThresholdSystem _mobThresholdSystem = default!;
     [Dependency] private readonly PopupSystem _popupSystem = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
     [Dependency] private readonly TabletopSystem _tabletopSystem = default!;
     [Dependency] private readonly VomitSystem _vomitSystem = default!;
     [Dependency] private readonly WeldableSystem _weldableSystem = default!;
-    [Dependency] private readonly MovementSpeedModifierSystem _movementSpeedModifierSystem = default!;
 
     // All smite verbs have names so invokeverb works.
     private void AddSmiteVerbs(GetVerbsEvent<Verb> args)
@@ -422,20 +425,24 @@ public sealed partial class AdminVerbSystem
                     var xform = Transform(args.Target);
                     var fixtures = Comp<FixturesComponent>(args.Target);
                     xform.Anchored = false; // Just in case.
-                    physics.BodyType = BodyType.Dynamic;
-                    physics.BodyStatus = BodyStatus.InAir;
-                    physics.WakeBody();
-                    foreach (var (_, fixture) in fixtures.Fixtures)
+                    _physics.SetBodyType(args.Target, BodyType.Dynamic, manager: fixtures, body: physics);
+                    _physics.SetBodyStatus(physics, BodyStatus.InAir);
+                    _physics.WakeBody(args.Target, manager: fixtures, body: physics);
+
+                    foreach (var fixture in fixtures.Fixtures.Values)
                     {
                         if (!fixture.Hard)
                             continue;
-                        fixture.Restitution = 1.1f;
+
+                        _physics.SetRestitution(args.Target, fixture, 1.1f, false, fixtures);
                     }
 
-                    physics.LinearVelocity = _random.NextVector2(1.5f, 1.5f);
-                    physics.AngularVelocity = MathF.PI * 12;
-                    physics.LinearDamping = 0.0f;
-                    physics.AngularDamping = 0.0f;
+                    _fixtures.FixtureUpdate(args.Target, manager: fixtures, body: physics);
+
+                    _physics.SetLinearVelocity(args.Target, _random.NextVector2(1.5f, 1.5f), manager: fixtures, body: physics);
+                    _physics.SetAngularVelocity(args.Target, MathF.PI * 12, manager: fixtures, body: physics);
+                    _physics.SetLinearDamping(physics, 0f);
+                    _physics.SetAngularDamping(physics, 0f);
                 },
                 Impact = LogImpact.Extreme,
                 Message = Loc.GetString("admin-smite-pinball-description")
@@ -452,18 +459,20 @@ public sealed partial class AdminVerbSystem
                     var xform = Transform(args.Target);
                     var fixtures = Comp<FixturesComponent>(args.Target);
                     xform.Anchored = false; // Just in case.
-                    physics.BodyType = BodyType.Dynamic;
-                    physics.BodyStatus = BodyStatus.InAir;
-                    physics.WakeBody();
-                    foreach (var (_, fixture) in fixtures.Fixtures)
+
+                    _physics.SetBodyType(args.Target, BodyType.Dynamic, body: physics);
+                    _physics.SetBodyStatus(physics, BodyStatus.InAir);
+                    _physics.WakeBody(args.Target, manager: fixtures, body: physics);
+
+                    foreach (var fixture in fixtures.Fixtures.Values)
                     {
-                        fixture.Hard = false;
+                        _physics.SetHard(args.Target, fixture, false, manager: fixtures);
                     }
 
-                    physics.LinearVelocity = _random.NextVector2(8.0f, 8.0f);
-                    physics.AngularVelocity = MathF.PI * 12;
-                    physics.LinearDamping = 0.0f;
-                    physics.AngularDamping = 0.0f;
+                    _physics.SetLinearVelocity(args.Target, _random.NextVector2(8.0f, 8.0f), manager: fixtures, body: physics);
+                    _physics.SetAngularVelocity(args.Target, MathF.PI * 12, manager: fixtures, body: physics);
+                    _physics.SetLinearDamping(physics, 0f);
+                    _physics.SetAngularDamping(physics, 0f);
                 },
                 Impact = LogImpact.Extreme,
                 Message = Loc.GetString("admin-smite-yeet-description")

Content.Server/Administration/Systems/AdminVerbSystem.Tools.cs

@@ -679,8 +679,8 @@ public sealed partial class AdminVerbSystem
                 IconTexture = "/Textures/Interface/AdminActions/halt.png",
                 Act = () =>
                 {
-                    physics.LinearVelocity = Vector2.Zero;
-                    physics.AngularVelocity = 0.0f;
+                    _physics.SetLinearVelocity(args.Target, Vector2.Zero, body: physics);
+                    _physics.SetAngularVelocity(args.Target, 0f, body: physics);
                 },
                 Impact = LogImpact.Medium,
                 Message = Loc.GetString("admin-trick-halt-movement-description"),

Content.Server/Atmos/Components/FlammableComponent.cs

@@ -34,6 +34,6 @@ namespace Content.Server.Atmos.Components
         ///     Used for the fixture created to handle passing firestacks when two flammable objects collide.
         /// </summary>
         [DataField("flammableCollisionShape")]
-        public IPhysShape FlammableCollisionShape = new PhysShapeCircle() { Radius = 0.35f };
+        public IPhysShape FlammableCollisionShape = new PhysShapeCircle(0.35f);
     }
 }

Content.Server/Atmos/EntitySystems/AtmosphereSystem.HighPressureDelta.cs

@@ -30,15 +30,16 @@ namespace Content.Server.Atmos.EntitySystems
 
             foreach (var comp in _activePressures)
             {
+                var uid = comp.Owner;
                 MetaDataComponent? metadata = null;
 
-                if (Deleted(comp.Owner, metadata))
+                if (Deleted(uid, metadata))
                 {
                     toRemove.Add(comp);
                     continue;
                 }
 
-                if (Paused(comp.Owner, metadata)) continue;
+                if (Paused(uid, metadata)) continue;
 
                 comp.Accumulator += frameTime;
 
@@ -48,17 +49,17 @@ namespace Content.Server.Atmos.EntitySystems
                 comp.Accumulator = 0f;
                 toRemove.Add(comp);
 
-                if (HasComp<MobStateComponent>(comp.Owner) &&
-                    TryComp<PhysicsComponent>(comp.Owner, out var body))
+                if (HasComp<MobStateComponent>(uid) &&
+                    TryComp<PhysicsComponent>(uid, out var body))
                 {
-                    body.BodyStatus = BodyStatus.OnGround;
+                    _physics.SetBodyStatus(body, BodyStatus.OnGround);
                 }
 
-                if (TryComp<FixturesComponent>(comp.Owner, out var fixtures))
+                if (TryComp<FixturesComponent>(uid, out var fixtures))
                 {
-                    foreach (var (_, fixture) in fixtures.Fixtures)
+                    foreach (var fixture in fixtures.Fixtures.Values)
                     {
-                        _physics.AddCollisionMask(fixtures, fixture, (int) CollisionGroup.TableLayer);
+                        _physics.AddCollisionMask(uid, fixture, (int) CollisionGroup.TableLayer, manager: fixtures);
                     }
                 }
             }
@@ -73,11 +74,11 @@ namespace Content.Server.Atmos.EntitySystems
         {
             if (!TryComp<FixturesComponent>(component.Owner, out var fixtures)) return;
 
-            body.BodyStatus = BodyStatus.InAir;
+            _physics.SetBodyStatus(body, BodyStatus.InAir);
 
             foreach (var fixture in fixtures.Fixtures.Values)
             {
-                _physics.RemoveCollisionMask(fixtures, fixture, (int) CollisionGroup.TableLayer);
+                _physics.RemoveCollisionMask(body.Owner, fixture, (int) CollisionGroup.TableLayer, manager: fixtures);
             }
 
             // TODO: Make them dynamic type? Ehh but they still want movement so uhh make it non-predicted like weightless?
@@ -188,10 +189,12 @@ namespace Content.Server.Atmos.EntitySystems
             TransformComponent? xform = null,
             PhysicsComponent? physics = null)
         {
-            if (!Resolve(component.Owner, ref physics, false))
+            var uid = component.Owner;
+
+            if (!Resolve(uid, ref physics, false))
                 return;
 
-            if (!Resolve(component.Owner, ref xform)) return;
+            if (!Resolve(uid, ref xform)) return;
 
             // TODO ATMOS stuns?
 
@@ -209,7 +212,7 @@ namespace Content.Server.Atmos.EntitySystems
                                                                           && (maxForce >= (component.MoveResist * MovedByPressureComponent.MoveForcePushRatio)))
                 || (physics.BodyType == BodyType.Static && (maxForce >= (component.MoveResist * MovedByPressureComponent.MoveForceForcePushRatio))))
             {
-                if (HasComp<MobStateComponent>(physics.Owner))
+                if (HasComp<MobStateComponent>(uid))
                 {
                     AddMobMovedByPressure(component, physics);
                 }
@@ -231,13 +234,12 @@ namespace Content.Server.Atmos.EntitySystems
                     if (throwTarget != EntityCoordinates.Invalid)
                     {
                         var pos = ((throwTarget.ToMap(EntityManager).Position - xform.WorldPosition).Normalized + dirVec).Normalized;
-                        physics.ApplyLinearImpulse(pos * moveForce);
+                        _physics.ApplyLinearImpulse(uid, pos * moveForce, body: physics);
                     }
-
                     else
                     {
                         moveForce = MathF.Min(moveForce, SpaceWindMaxPushForce);
-                        physics.ApplyLinearImpulse(dirVec * moveForce);
+                        _physics.ApplyLinearImpulse(uid, dirVec * moveForce, body: physics);
                     }
 
                     component.LastHighPressureMovementAirCycle = cycle;

Content.Server/Atmos/EntitySystems/AtmosphereSystem.Monstermos.cs

@@ -484,8 +484,8 @@ namespace Content.Server.Atmos.EntitySystems
                 var gridPhysics = Comp<PhysicsComponent>(mapGrid.Owner);
 
                 // TODO ATMOS: Come up with better values for these.
-                gridPhysics.ApplyLinearImpulse(direction * totalMolesRemoved * gridPhysics.Mass);
-                gridPhysics.ApplyAngularImpulse(Vector2.Cross(tile.GridIndices - gridPhysics.LocalCenter, direction) * totalMolesRemoved);
+                _physics.ApplyLinearImpulse(mapGrid.Owner, direction * totalMolesRemoved * gridPhysics.Mass, body: gridPhysics);
+                _physics.ApplyAngularImpulse(mapGrid.Owner, Vector2.Cross(tile.GridIndices - gridPhysics.LocalCenter, direction) * totalMolesRemoved, body: gridPhysics);
             }
 
             if(tileCount > 10 && (totalMolesRemoved / tileCount) > 20)

Content.Server/Atmos/EntitySystems/FlammableSystem.cs

@@ -33,6 +33,7 @@ namespace Content.Server.Atmos.EntitySystems
         [Dependency] private readonly AlertsSystem _alertsSystem = default!;
         [Dependency] private readonly TransformSystem _transformSystem = default!;
         [Dependency] private readonly FixtureSystem _fixture = default!;
+        [Dependency] private readonly EntityLookupSystem _lookup = default!;
         [Dependency] private readonly IAdminLogManager _adminLogger = default!;
 
         public const float MinimumFireStacks = -10f;
@@ -92,12 +93,8 @@ namespace Content.Server.Atmos.EntitySystems
             if (!TryComp<PhysicsComponent>(uid, out var body))
                 return;
 
-            _fixture.TryCreateFixture(body, new Fixture(body, component.FlammableCollisionShape)
-            {
-                Hard = false,
-                ID = FlammableFixtureID,
-                CollisionMask = (int) CollisionGroup.FullTileLayer
-            });
+            _fixture.TryCreateFixture(uid, component.FlammableCollisionShape, FlammableFixtureID, hard: false,
+                collisionMask: (int) CollisionGroup.FullTileLayer, body: body);
         }
 
         private void OnInteractUsing(EntityUid uid, FlammableComponent flammable, InteractUsingEvent args)
@@ -274,7 +271,7 @@ namespace Content.Server.Atmos.EntitySystems
             _timer -= UpdateTime;
 
             // TODO: This needs cleanup to take off the crust from TemperatureComponent and shit.
-            foreach (var (flammable, physics, transform) in EntityManager.EntityQuery<FlammableComponent, PhysicsComponent, TransformComponent>())
+            foreach (var (flammable, transform) in EntityManager.EntityQuery<FlammableComponent, TransformComponent>())
             {
                 var uid = flammable.Owner;
 
@@ -327,20 +324,21 @@ namespace Content.Server.Atmos.EntitySystems
 
                 }
 
-                foreach (var otherUid in flammable.Collided.ToArray())
+                for (var i = flammable.Collided.Count - 1; i >= 0; i--)
                 {
+                    var otherUid = flammable.Collided[i];
+
                     if (!otherUid.IsValid() || !EntityManager.EntityExists(otherUid))
                     {
-                        flammable.Collided.Remove(otherUid);
+                        flammable.Collided.RemoveAt(i);
                         continue;
                     }
 
-                    var otherPhysics = EntityManager.GetComponent<PhysicsComponent>(uid);
-
                     // TODO: Sloth, please save our souls!
-                    if (!physics.GetWorldAABB().Intersects(otherPhysics.GetWorldAABB()))
+                    // no
+                    if (!_lookup.GetWorldAABB(uid, transform).Intersects(_lookup.GetWorldAABB(otherUid)))
                     {
-                        flammable.Collided.Remove(otherUid);
+                        flammable.Collided.RemoveAt(i);
                     }
                 }
             }

Content.Server/Beam/BeamSystem.cs

@@ -81,17 +81,19 @@ public sealed class BeamSystem : SharedBeamSystem
 
         if (TryComp<PhysicsComponent>(ent, out var physics) && TryComp<BeamComponent>(ent, out var beam))
         {
-            var fixture = new Fixture(physics, shape)
-            {
-                ID = "BeamBody",
-                Hard = false,
-                CollisionMask = (int)CollisionGroup.ItemMask,
-                CollisionLayer = (int)CollisionGroup.MobLayer
-            };
+            FixturesComponent? manager = null;
+            _fixture.TryCreateFixture(
+                ent,
+                shape,
+                "BeamBody",
+                hard: false,
+                collisionMask: (int)CollisionGroup.ItemMask,
+                collisionLayer: (int)CollisionGroup.MobLayer,
+                manager: manager,
+                body: physics);
 
-            _fixture.TryCreateFixture(physics, fixture);
-            _physics.SetBodyType(physics, BodyType.Dynamic);
-            _physics.SetCanCollide(physics, true);
+            _physics.SetBodyType(ent, BodyType.Dynamic, manager: manager, body: physics);
+            _physics.SetCanCollide(ent, true, manager: manager, body: physics);
 
             var beamVisualizerEvent = new BeamVisualizerEvent(ent, distanceLength, userAngle, bodyState, shader);
             RaiseNetworkEvent(beamVisualizerEvent);

Content.Server/Chemistry/EntitySystems/VaporSystem.cs

@@ -13,6 +13,7 @@ using Robust.Shared.Map.Components;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Dynamics;
 using Robust.Shared.Physics.Events;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Prototypes;
 
 namespace Content.Server.Chemistry.EntitySystems
@@ -22,6 +23,7 @@ namespace Content.Server.Chemistry.EntitySystems
     {
         [Dependency] private readonly IMapManager _mapManager = default!;
         [Dependency] private readonly IPrototypeManager _protoManager = default!;
+        [Dependency] private readonly SharedPhysicsSystem _physics = default!;
         [Dependency] private readonly SolutionContainerSystem _solutionContainerSystem = default!;
         [Dependency] private readonly ThrowingSystem _throwing = default!;
 
@@ -37,7 +39,7 @@ namespace Content.Server.Chemistry.EntitySystems
         {
             if (!EntityManager.TryGetComponent(uid, out SolutionContainerManagerComponent? contents)) return;
 
-            foreach (var (_, value) in contents.Solutions)
+            foreach (var value in contents.Solutions.Values)
             {
                 value.DoEntityReaction(args.OtherFixture.Body.Owner, ReactionMethod.Touch);
             }
@@ -58,8 +60,8 @@ namespace Content.Server.Chemistry.EntitySystems
             // Set Move
             if (EntityManager.TryGetComponent(vapor.Owner, out PhysicsComponent? physics))
             {
-                physics.LinearDamping = 0f;
-                physics.AngularDamping = 0f;
+                _physics.SetLinearDamping(physics, 0f);
+                _physics.SetAngularDamping(physics, 0f);
 
                 _throwing.TryThrow(vapor.Owner, dir * speed, user: user, pushbackRatio: 50f);
 

Content.Server/Climbing/ClimbSystem.cs

@@ -44,6 +44,7 @@ public sealed class ClimbSystem : SharedClimbSystem
     [Dependency] private readonly InteractionSystem _interactionSystem = default!;
     [Dependency] private readonly StunSystem _stunSystem = default!;
     [Dependency] private readonly AudioSystem _audioSystem = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
 
     private const string ClimbingFixtureName = "climb";
     private const int ClimbingCollisionGroup = (int) (CollisionGroup.TableLayer | CollisionGroup.LowImpassable);
@@ -162,7 +163,7 @@ public sealed class ClimbSystem : SharedClimbSystem
         if (!Resolve(uid, ref climbing, ref physics, ref fixtures, false))
             return;
 
-        if (!ReplaceFixtures(climbing, physics, fixtures))
+        if (!ReplaceFixtures(climbing, fixtures))
             return;
 
         climbing.IsClimbing = true;
@@ -202,8 +203,10 @@ public sealed class ClimbSystem : SharedClimbSystem
     /// Replaces the current fixtures with non-climbing collidable versions so that climb end can be detected
     /// </summary>
     /// <returns>Returns whether adding the new fixtures was successful</returns>
-    private bool ReplaceFixtures(ClimbingComponent climbingComp, PhysicsComponent physicsComp, FixturesComponent fixturesComp)
+    private bool ReplaceFixtures(ClimbingComponent climbingComp, FixturesComponent fixturesComp)
     {
+        var uid = climbingComp.Owner;
+
         // Swap fixtures
         foreach (var (name, fixture) in fixturesComp.Fixtures)
         {
@@ -213,13 +216,21 @@ public sealed class ClimbSystem : SharedClimbSystem
                 continue;
 
             climbingComp.DisabledFixtureMasks.Add(fixture.ID, fixture.CollisionMask & ClimbingCollisionGroup);
-            fixture.CollisionMask &= ~ClimbingCollisionGroup;
+            _physics.SetCollisionMask(uid, fixture, fixture.CollisionMask & ~ClimbingCollisionGroup, fixturesComp);
         }
 
-        if (!_fixtureSystem.TryCreateFixture(physicsComp,
-            new Fixture(new PhysShapeCircle { Radius = 0.35f }, (int) CollisionGroup.None, ClimbingCollisionGroup, false)
-                {ID = ClimbingFixtureName}, manager: fixturesComp))
+        if (!_fixtureSystem.TryCreateFixture(
+                uid,
+                new PhysShapeCircle(0.35f),
+                ClimbingFixtureName,
+                collisionLayer: (int) CollisionGroup.None,
+                collisionMask: ClimbingCollisionGroup,
+                hard: false,
+                manager: fixturesComp))
+        {
             return false;
+        }
+
         return true;
     }
 
@@ -250,8 +261,11 @@ public sealed class ClimbSystem : SharedClimbSystem
         foreach (var (name, fixtureMask) in climbing.DisabledFixtureMasks)
         {
             if (!fixtures.Fixtures.TryGetValue(name, out var fixture))
+            {
                 continue;
-            fixture.CollisionMask |= fixtureMask;
+            }
+
+            _physics.SetCollisionMask(uid, fixture, fixture.CollisionMask | fixtureMask, fixtures);
         }
         climbing.DisabledFixtureMasks.Clear();
 
@@ -397,16 +411,18 @@ public sealed class ClimbSystem : SharedClimbSystem
         // Since there are bodies with different masses:
         // mass * 10 seems enough to move entity
         // instead of launching cats like rockets against the walls with constant impulse value.
-        physics.ApplyLinearImpulse((to - from).Normalized * velocity * physics.Mass * 10);
-        physics.BodyType = BodyType.Dynamic;
+        _physics.ApplyLinearImpulse(uid, (to - from).Normalized * velocity * physics.Mass * 10, body: physics);
+        _physics.SetBodyType(uid, BodyType.Dynamic, body: physics);
         climbing.OwnerIsTransitioning = true;
         _actionBlockerSystem.UpdateCanMove(uid);
 
         // Transition back to KinematicController after BufferTime
         climbing.Owner.SpawnTimer((int) (ClimbingComponent.BufferTime * 1000), () =>
         {
-            if (climbing.Deleted) return;
-            physics.BodyType = BodyType.KinematicController;
+            if (climbing.Deleted)
+                return;
+
+            _physics.SetBodyType(uid, BodyType.KinematicController);
             climbing.OwnerIsTransitioning = false;
             _actionBlockerSystem.UpdateCanMove(uid);
         });
@@ -418,10 +434,13 @@ public sealed class ClimbSystem : SharedClimbSystem
         {
             if (!TryComp<PhysicsComponent>(uid, out var physicsComp)
                 || !TryComp<FixturesComponent>(uid, out var fixturesComp))
+            {
                 continue;
+            }
+
             foreach (var fixture in fixtures)
             {
-                _fixtureSystem.DestroyFixture(physicsComp, fixture, true, fixturesComp);
+                _fixtureSystem.DestroyFixture(uid, fixture, body: physicsComp, manager: fixturesComp);
             }
         }
 

Content.Server/Disposal/Tube/Components/DisposalRouterComponent.cs

@@ -1,4 +1,3 @@
-using System.Text;
 using Content.Server.Disposal.Unit.Components;
 using Content.Server.UserInterface;
 using Robust.Server.GameObjects;

Content.Server/Disposal/Unit/Components/DisposalHolderComponent.cs

@@ -5,6 +5,7 @@ using Content.Shared.Item;
 using Robust.Shared.Containers;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.Server.Disposal.Unit.Components
 {
@@ -85,7 +86,7 @@ namespace Content.Server.Disposal.Unit.Components
 
             if (_entMan.TryGetComponent(entity, out PhysicsComponent? physics))
             {
-                physics.CanCollide = false;
+                _entMan.System<SharedPhysicsSystem>().SetCanCollide(entity, false, body: physics);
             }
 
             return true;

Content.Server/Disposal/Unit/EntitySystems/DisposableSystem.cs

@@ -67,7 +67,7 @@ namespace Content.Server.Disposal.Unit.EntitySystems
 
                 if (EntityManager.TryGetComponent(entity, out PhysicsComponent? physics))
                 {
-                    _physicsSystem.WakeBody(entity, physics);
+                    _physicsSystem.WakeBody(entity, body: physics);
                 }
             }
 

Content.Server/Doors/Systems/DoorSystem.cs

@@ -58,7 +58,9 @@ public sealed class DoorSystem : SharedDoorSystem
         args.Handled = true;
     }
 
-    protected override void SetCollidable(EntityUid uid, bool collidable,
+    protected override void SetCollidable(
+        EntityUid uid,
+        bool collidable,
         DoorComponent? door = null,
         PhysicsComponent? physics = null,
         OccluderComponent? occluder = null)

Content.Server/Explosion/Components/TriggerOnProximityComponent.cs

@@ -14,10 +14,10 @@ namespace Content.Server.Explosion.Components
     {
         public const string FixtureID  = "trigger-on-proximity-fixture";
 
-        public HashSet<PhysicsComponent> Colliding = new();
+        public readonly HashSet<PhysicsComponent> Colliding = new();
 
         [DataField("shape", required: true)]
-        public IPhysShape Shape { get; set; } = new PhysShapeCircle {Radius = 2};
+        public IPhysShape Shape { get; set; } = new PhysShapeCircle(2f);
 
         /// <summary>
         /// How long the the proximity trigger animation plays for.

Content.Server/Explosion/EntitySystems/TriggerSystem.Proximity.cs

@@ -57,13 +57,16 @@ public sealed partial class TriggerSystem
 
         SetProximityAppearance(uid, component);
 
-        if (!TryComp<PhysicsComponent>(uid, out var body)) return;
+        if (!TryComp<PhysicsComponent>(uid, out var body))
+            return;
 
-        _fixtures.TryCreateFixture(body, new Fixture(body, component.Shape)
-        {
+        _fixtures.TryCreateFixture(
+            uid,
+            component.Shape,
+            TriggerOnProximityComponent.FixtureID,
+            hard: false,
             // TODO: Should probably have these settable via datafield but I'm lazy and it's a pain
-            CollisionLayer = (int) (CollisionGroup.MidImpassable | CollisionGroup.LowImpassable | CollisionGroup.HighImpassable), Hard = false, ID = TriggerOnProximityComponent.FixtureID
-        });
+            collisionLayer: (int) (CollisionGroup.MidImpassable | CollisionGroup.LowImpassable | CollisionGroup.HighImpassable));
     }
 
     private void OnProximityStartCollide(EntityUid uid, TriggerOnProximityComponent component, ref StartCollideEvent args)

Content.Server/Ghost/GhostSystem.cs

@@ -20,6 +20,7 @@ using Robust.Server.GameObjects;
 using Robust.Server.Player;
 using Robust.Shared.Console;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Timing;
 
 namespace Content.Server.Ghost
@@ -36,6 +37,7 @@ namespace Content.Server.Ghost
         [Dependency] private readonly EntityLookupSystem _lookup = default!;
         [Dependency] private readonly FollowerSystem _followerSystem = default!;
         [Dependency] private readonly MobStateSystem _mobState = default!;
+        [Dependency] private readonly SharedPhysicsSystem _physics = default!;
 
         public override void Initialize()
         {
@@ -226,7 +228,7 @@ namespace Content.Server.Ghost
             xform.Coordinates = Transform(msg.Target).Coordinates;
             xform.AttachToGridOrMap();
             if (TryComp(attached, out PhysicsComponent? physics))
-                physics.LinearVelocity = Vector2.Zero;
+                _physics.SetLinearVelocity(attached, Vector2.Zero, body: physics);
         }
 
         private void DeleteEntity(EntityUid uid)

Content.Server/ImmovableRod/ImmovableRodSystem.cs

@@ -7,6 +7,7 @@ using Robust.Shared.Audio;
 using Robust.Shared.Map;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Events;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Random;
 
@@ -19,6 +20,7 @@ public sealed class ImmovableRodSystem : EntitySystem
 
     [Dependency] private readonly BodySystem _bodySystem = default!;
     [Dependency] private readonly PopupSystem _popup = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
 
     public override void Update(float frameTime)
     {
@@ -29,6 +31,7 @@ public sealed class ImmovableRodSystem : EntitySystem
         {
             if (!rod.DestroyTiles)
                 continue;
+
             if (!_map.TryGetGrid(trans.GridUid, out var grid))
                 continue;
 
@@ -49,9 +52,9 @@ public sealed class ImmovableRodSystem : EntitySystem
     {
         if (EntityManager.TryGetComponent(uid, out PhysicsComponent? phys))
         {
-            phys.LinearDamping = 0f;
-            phys.Friction = 0f;
-            phys.BodyStatus = BodyStatus.InAir;
+            _physics.SetLinearDamping(phys, 0f);
+            _physics.SetFriction(phys, 0f);
+            _physics.SetBodyStatus(phys, BodyStatus.InAir);
 
             if (!component.RandomizeVelocity)
                 return;
@@ -63,7 +66,7 @@ public sealed class ImmovableRodSystem : EntitySystem
                 _ => xform.WorldRotation.RotateVec(component.DirectionOverride.ToVec()) * _random.NextFloat(component.MinSpeed, component.MaxSpeed)
             };
 
-            phys.ApplyLinearImpulse(vel);
+            _physics.ApplyLinearImpulse(uid, vel, body: phys);
             xform.LocalRotation = (vel - xform.WorldPosition).ToWorldAngle() + MathHelper.PiOver2;
         }
     }

Content.Server/Magic/MagicSystem.cs

@@ -311,7 +311,8 @@ public sealed class MagicSystem : EntitySystem
 
         var direction = Transform(ev.Target).MapPosition.Position - Transform(ev.Performer).MapPosition.Position;
         var impulseVector = direction * 10000;
-        Comp<PhysicsComponent>(ev.Target).ApplyLinearImpulse(impulseVector);
+
+        _physics.ApplyLinearImpulse(ev.Target, impulseVector);
 
         if (!TryComp<BodyComponent>(ev.Target, out var body))
             return;

Content.Server/Maps/GridDraggingSystem.cs

@@ -4,6 +4,7 @@ using Robust.Server.Player;
 using Robust.Shared.Players;
 using Robust.Shared.Utility;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.Server.Maps;
 
@@ -11,6 +12,7 @@ namespace Content.Server.Maps;
 public sealed class GridDraggingSystem : SharedGridDraggingSystem
 {
     [Dependency] private readonly IConGroupController _admin = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
 
     private readonly HashSet<ICommonSession> _draggers = new();
 
@@ -54,8 +56,8 @@ public sealed class GridDraggingSystem : SharedGridDraggingSystem
             Deleted(ev.Grid)) return;
 
         var gridBody = Comp<PhysicsComponent>(ev.Grid);
-        gridBody.LinearVelocity = ev.LinearVelocity;
-        gridBody.AngularVelocity = 0f;
+        _physics.SetLinearVelocity(ev.Grid, ev.LinearVelocity, body: gridBody);
+        _physics.SetAngularVelocity(ev.Grid, 0f, body: gridBody);
     }
 
     private void OnRequestDrag(GridDragRequestPosition msg, EntitySessionEventArgs args)

Content.Server/ParticleAccelerator/Components/ParticleProjectileComponent.cs

@@ -3,6 +3,7 @@ using Content.Server.Singularity.Components;
 using Content.Shared.Projectiles;
 using Content.Shared.Singularity.Components;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Timing;
 
 namespace Content.Server.ParticleAccelerator.Components
@@ -18,14 +19,16 @@ namespace Content.Server.ParticleAccelerator.Components
         {
             State = state;
 
-            if (!_entMan.TryGetComponent<PhysicsComponent?>(Owner, out var physicsComponent))
+            if (!_entMan.TryGetComponent<PhysicsComponent>(Owner, out var physicsComponent))
             {
                 Logger.Error("ParticleProjectile tried firing, but it was spawned without a CollidableComponent");
                 return;
             }
-            physicsComponent.BodyStatus = BodyStatus.InAir;
 
-            if (!_entMan.TryGetComponent<ProjectileComponent?>(Owner, out var projectileComponent))
+            var physics = _entMan.System<SharedPhysicsSystem>();
+            physics.SetBodyStatus(physicsComponent, BodyStatus.InAir);
+
+            if (!_entMan.TryGetComponent<ProjectileComponent>(Owner, out var projectileComponent))
             {
                 Logger.Error("ParticleProjectile tried firing, but it was spawned without a ProjectileComponent");
                 return;
@@ -33,7 +36,7 @@ namespace Content.Server.ParticleAccelerator.Components
 
             _entMan.EntitySysManager.GetEntitySystem<ProjectileSystem>().SetShooter(projectileComponent, firer);
 
-            if (!_entMan.TryGetComponent<SinguloFoodComponent?>(Owner, out var singuloFoodComponent))
+            if (!_entMan.TryGetComponent<SinguloFoodComponent>(Owner, out var singuloFoodComponent))
             {
                 Logger.Error("ParticleProjectile tried firing, but it was spawned without a SinguloFoodComponent");
                 return;
@@ -54,7 +57,7 @@ namespace Content.Server.ParticleAccelerator.Components
                 appearance.SetData(ParticleAcceleratorVisuals.VisualState, state);
             }
 
-            physicsComponent.LinearVelocity = angle.ToWorldVec() * 20f;
+            physics.SetLinearVelocity(Owner, angle.ToWorldVec() * 20f, body: physicsComponent);
 
             _entMan.GetComponent<TransformComponent>(Owner).LocalRotation = angle;
             Timer.Spawn(3000, () => _entMan.DeleteEntity(Owner));

Content.Server/Physics/Controllers/ConveyorController.cs

@@ -77,12 +77,9 @@ namespace Content.Server.Physics.Controllers
                 var shape = new PolygonShape();
                 shape.SetAsBox(0.55f, 0.55f);
 
-                _fixtures.TryCreateFixture(body, new Fixture(body, shape)
-                {
-                    ID = ConveyorFixture,
-                    CollisionLayer = (int) (CollisionGroup.LowImpassable | CollisionGroup.MidImpassable | CollisionGroup.Impassable),
-                    Hard = false,
-                });
+                _fixtures.TryCreateFixture(uid, shape, ConveyorFixture, hard: false,
+                    collisionLayer: (int) (CollisionGroup.LowImpassable | CollisionGroup.MidImpassable |
+                                           CollisionGroup.Impassable), body: body);
             }
         }
 
@@ -160,7 +157,7 @@ namespace Content.Server.Physics.Controllers
                         continue;
 
                     if (physics.BodyType != BodyType.Static)
-                        _physics.WakeBody(physics);
+                        _physics.WakeBody(entity, body: physics);
                 }
             }
         }
@@ -180,7 +177,7 @@ namespace Content.Server.Physics.Controllers
             if (!TryComp<PhysicsComponent>(uid, out var body))
                 return;
 
-            _fixtures.DestroyFixture(body, ConveyorFixture);
+            _fixtures.DestroyFixture(uid, ConveyorFixture, body: body);
         }
 
         public override void UpdateBeforeSolve(bool prediction, float frameTime)
@@ -237,8 +234,9 @@ namespace Content.Server.Physics.Controllers
                 transform.LocalPosition = localPos;
 
                 // Force it awake for collisionwake reasons.
-                body.Awake = true;
-                body.SleepTime = 0f;
+                // TODO: Just use sleepallowed
+                _physics.SetAwake(entity, body, true);
+                _physics.SetSleepTime(body, 0f);
             }
         }
 

Content.Server/Physics/Controllers/MoverController.cs

@@ -8,6 +8,7 @@ using Content.Shared.Shuttles.Systems;
 using Robust.Server.GameObjects;
 using Robust.Shared.Map;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
 
 namespace Content.Server.Physics.Controllers
@@ -399,7 +400,7 @@ namespace Content.Server.Physics.Controllers
                                 impulse.Y = MathF.Max(impulse.Y, -shuttleVelocity.Y);
                             }
 
-                            PhysicsSystem.SetLinearVelocity(body, body.LinearVelocity + shuttleNorthAngle.RotateVec(impulse));
+                            PhysicsSystem.SetLinearVelocity(shuttle.Owner, body.LinearVelocity + shuttleNorthAngle.RotateVec(impulse), body: body);
                         }
                     }
                     else
@@ -432,7 +433,7 @@ namespace Content.Server.Physics.Controllers
                             else if (body.AngularVelocity > 0f && body.AngularVelocity + accelSpeed < 0f)
                                 accelSpeed = -body.AngularVelocity;
 
-                            PhysicsSystem.SetAngularVelocity(body, body.AngularVelocity + accelSpeed);
+                            PhysicsSystem.SetAngularVelocity(shuttle.Owner, body.AngularVelocity + accelSpeed, body: body);
                             _thruster.SetAngularThrust(shuttle, true);
                         }
                     }
@@ -440,19 +441,19 @@ namespace Content.Server.Physics.Controllers
 
                 if (linearInput.Length.Equals(0f))
                 {
-                    body.SleepingAllowed = true;
+                    PhysicsSystem.SetSleepingAllowed(shuttle.Owner, body, true);
 
                     if (brakeInput.Equals(0f))
                         _thruster.DisableLinearThrusters(shuttle);
 
                     if (body.LinearVelocity.Length < 0.08)
                     {
-                        body.LinearVelocity = Vector2.Zero;
+                        PhysicsSystem.SetLinearVelocity(shuttle.Owner, Vector2.Zero, body: body);
                     }
                 }
                 else
                 {
-                    body.SleepingAllowed = false;
+                    PhysicsSystem.SetSleepingAllowed(shuttle.Owner, body, false);
                     var angle = linearInput.ToWorldAngle();
                     var linearDir = angle.GetDir();
                     var dockFlag = linearDir.AsFlag();
@@ -519,23 +520,23 @@ namespace Content.Server.Physics.Controllers
                     {
                         var accelSpeed = totalForce.Length * frameTime;
                         accelSpeed = MathF.Min(accelSpeed, addSpeed);
-                        body.ApplyLinearImpulse(shuttleNorthAngle.RotateVec(totalForce.Normalized * accelSpeed));
+                        PhysicsSystem.ApplyLinearImpulse(shuttle.Owner, shuttleNorthAngle.RotateVec(totalForce.Normalized * accelSpeed), body: body);
                     }
                 }
 
                 if (MathHelper.CloseTo(angularInput, 0f))
                 {
                     _thruster.SetAngularThrust(shuttle, false);
-                    body.SleepingAllowed = true;
+                    PhysicsSystem.SetSleepingAllowed(shuttle.Owner, body, true);
 
                     if (Math.Abs(body.AngularVelocity) < 0.01f)
                     {
-                        body.AngularVelocity = 0f;
+                        PhysicsSystem.SetAngularVelocity(shuttle.Owner, 0f, body: body);
                     }
                 }
                 else
                 {
-                    body.SleepingAllowed = false;
+                    PhysicsSystem.SetSleepingAllowed(shuttle.Owner, body, false);
                     var impulse = shuttle.AngularThrust * -angularInput;
                     var wishSpeed = MathF.PI;
 
@@ -554,7 +555,7 @@ namespace Content.Server.Physics.Controllers
                         else
                             accelSpeed = MathF.Min(accelSpeed, addSpeed);
 
-                        PhysicsSystem.SetAngularVelocity(body, body.AngularVelocity + accelSpeed);
+                        PhysicsSystem.SetAngularVelocity(shuttle.Owner, body.AngularVelocity + accelSpeed, body: body);
                         _thruster.SetAngularThrust(shuttle, true);
                     }
                 }

Content.Server/Physics/Controllers/PullController.cs

@@ -73,7 +73,7 @@ namespace Content.Server.Physics.Controllers
                 return;
 
             if (TryComp<PhysicsComponent>(pullable.Owner, out var physics))
-                physics.WakeBody();
+                PhysicsSystem.WakeBody(pullable.Owner, body: physics);
 
             _pullableSystem.StopMoveTo(pullable);
         }
@@ -164,9 +164,9 @@ namespace Content.Server.Physics.Controllers
                 var diff = movingPosition - ownerPosition;
                 var diffLength = diff.Length;
 
-                if ((diffLength < MaximumSettleDistance) && (physics.LinearVelocity.Length < MaximumSettleVelocity))
+                if (diffLength < MaximumSettleDistance && (physics.LinearVelocity.Length < MaximumSettleVelocity))
                 {
-                    physics.LinearVelocity = Vector2.Zero;
+                    PhysicsSystem.SetLinearVelocity(pullable.Owner, Vector2.Zero, body: physics);
                     _pullableSystem.StopMoveTo(pullable);
                     continue;
                 }
@@ -183,9 +183,11 @@ namespace Content.Server.Physics.Controllers
                     var scaling = (SettleShutdownDistance - diffLength) / SettleShutdownDistance;
                     accel -= physics.LinearVelocity * SettleShutdownMultiplier * scaling;
                 }
-                physics.WakeBody();
+
+                PhysicsSystem.WakeBody(pullable.Owner, body: physics);
+
                 var impulse = accel * physics.Mass * frameTime;
-                physics.ApplyLinearImpulse(impulse);
+                PhysicsSystem.ApplyLinearImpulse(pullable.Owner, impulse, body: physics);
             }
         }
     }

Content.Server/Physics/Controllers/RandomWalkController.cs

@@ -69,8 +69,8 @@ internal sealed class RandomWalkController : VirtualController
         var pushAngle = _random.NextAngle();
         var pushStrength = _random.NextFloat(randomWalk.MinSpeed, randomWalk.MaxSpeed);
 
-        _physics.SetLinearVelocity(physics, physics.LinearVelocity * randomWalk.AccumulatorRatio);
-        _physics.ApplyLinearImpulse(physics, pushAngle.ToVec() * (pushStrength * physics.Mass));
+        _physics.SetLinearVelocity(uid, physics.LinearVelocity * randomWalk.AccumulatorRatio, body: physics);
+        _physics.ApplyLinearImpulse(uid, pushAngle.ToVec() * (pushStrength * physics.Mass), body: physics);
     }
 
     /// <summary>

Content.Server/Shuttles/Systems/DockingSystem.cs

@@ -20,12 +20,13 @@ namespace Content.Server.Shuttles.Systems
     public sealed partial class DockingSystem : EntitySystem
     {
         [Dependency] private readonly IMapManager _mapManager = default!;
-        [Dependency] private readonly FixtureSystem _fixtureSystem = default!;
-        [Dependency] private readonly SharedJointSystem _jointSystem = default!;
-        [Dependency] private readonly SharedTransformSystem _transformSystem = default!;
-        [Dependency] private readonly ShuttleConsoleSystem _console = default!;
         [Dependency] private readonly DoorSystem _doorSystem = default!;
+        [Dependency] private readonly FixtureSystem _fixtureSystem = default!;
         [Dependency] private readonly PathfindingSystem _pathfinding = default!;
+        [Dependency] private readonly ShuttleConsoleSystem _console = default!;
+        [Dependency] private readonly SharedJointSystem _jointSystem = default!;
+        [Dependency] private readonly SharedPhysicsSystem _physics = default!;
+        [Dependency] private readonly SharedTransformSystem _transformSystem = default!;
 
         private ISawmill _sawmill = default!;
         private const string DockingFixture = "docking";
@@ -70,10 +71,13 @@ namespace Content.Server.Shuttles.Systems
             // Assume the docking port itself (and its body) is valid
 
             if (!_mapManager.TryGetGrid(dockingXform.GridUid, out var grid) ||
-                !HasComp<ShuttleComponent>(grid.Owner)) return null;
+                !HasComp<ShuttleComponent>(grid.Owner))
+            {
+                return null;
+            }
 
-            var transform = body.GetTransform();
-            var dockingFixture = _fixtureSystem.GetFixtureOrNull(body, DockingFixture);
+            var transform = _physics.GetPhysicsTransform(body.Owner, dockingXform);
+            var dockingFixture = _fixtureSystem.GetFixtureOrNull(body.Owner, DockingFixture);
 
             if (dockingFixture == null)
                 return null;
@@ -99,13 +103,13 @@ namespace Content.Server.Shuttles.Systems
                 {
                     if (!TryComp(ent, out DockingComponent? otherDocking) ||
                         !otherDocking.Enabled ||
-                        !TryComp(ent, out PhysicsComponent? otherBody))
+                        !TryComp(ent, out FixturesComponent? otherBody))
                     {
                         continue;
                     }
 
-                    var otherTransform = otherBody.GetTransform();
-                    var otherDockingFixture = _fixtureSystem.GetFixtureOrNull(otherBody, DockingFixture);
+                    var otherTransform = _physics.GetPhysicsTransform(ent);
+                    var otherDockingFixture = _fixtureSystem.GetFixtureOrNull(ent, DockingFixture, manager: otherBody);
 
                     if (otherDockingFixture == null)
                     {
@@ -251,7 +255,7 @@ namespace Content.Server.Shuttles.Systems
                 return;
             }
 
-            _fixtureSystem.DestroyFixture(physicsComponent, DockingFixture);
+            _fixtureSystem.DestroyFixture(uid, DockingFixture, body: physicsComponent);
         }
 
         private void EnableDocking(EntityUid uid, DockingComponent component)
@@ -264,24 +268,12 @@ namespace Content.Server.Shuttles.Systems
 
             component.Enabled = true;
 
-            // TODO: WTF IS THIS GARBAGE
-            var shape = new PhysShapeCircle
-            {
-                // Want half of the unit vector
-                Position = new Vector2(0f, -0.5f),
-                Radius = DockingRadius
-            };
+            var shape = new PhysShapeCircle(DockingRadius, new Vector2(0f, -0.5f));
 
             // Listen it makes intersection tests easier; you can probably dump this but it requires a bunch more boilerplate
-            var fixture = new Fixture(physicsComponent, shape)
-            {
-                ID = DockingFixture,
-                Hard = false,
-            };
-
             // TODO: I want this to ideally be 2 fixtures to force them to have some level of alignment buuuttt
             // I also need collisionmanager for that yet again so they get dis.
-            _fixtureSystem.TryCreateFixture(physicsComponent, fixture);
+            _fixtureSystem.TryCreateFixture(uid, shape, DockingFixture, hard: false);
         }
 
         /// <summary>
@@ -407,16 +399,16 @@ namespace Content.Server.Shuttles.Systems
                 return false;
             }
 
-            var fixtureA = _fixtureSystem.GetFixtureOrNull(bodyA, DockingFixture);
-            var fixtureB = _fixtureSystem.GetFixtureOrNull(bodyB, DockingFixture);
+            var fixtureA = _fixtureSystem.GetFixtureOrNull(bodyA.Owner, DockingFixture);
+            var fixtureB = _fixtureSystem.GetFixtureOrNull(bodyB.Owner, DockingFixture);
 
             if (fixtureA == null || fixtureB == null)
             {
                 return false;
             }
 
-            var transformA = bodyA.GetTransform();
-            var transformB = bodyB.GetTransform();
+            var transformA = _physics.GetPhysicsTransform(dockA.Owner);
+            var transformB = _physics.GetPhysicsTransform(dockB.Owner);
             var intersect = false;
 
             for (var i = 0; i < fixtureA.Shape.ChildCount; i++)

Content.Server/Shuttles/Systems/ShuttleSystem.FasterThanLight.cs

@@ -234,10 +234,10 @@ public sealed partial class ShuttleSystem
 
                     if (TryComp(comp.Owner, out body))
                     {
-                        body.LinearVelocity = new Vector2(0f, 20f);
-                        body.AngularVelocity = 0f;
-                        body.LinearDamping = 0f;
-                        body.AngularDamping = 0f;
+                        _physics.SetLinearVelocity(comp.Owner, new Vector2(0f, 20f), body: body);
+                        _physics.SetAngularVelocity(comp.Owner, 0f, body: body);
+                        _physics.SetLinearDamping(body, 0f);
+                        _physics.SetAngularDamping(body, 0f);
                     }
 
                     if (comp.TravelSound != null)
@@ -272,10 +272,10 @@ public sealed partial class ShuttleSystem
 
                     if (TryComp(comp.Owner, out body))
                     {
-                        body.LinearVelocity = Vector2.Zero;
-                        body.AngularVelocity = 0f;
-                        body.LinearDamping = ShuttleLinearDamping;
-                        body.AngularDamping = ShuttleAngularDamping;
+                        _physics.SetLinearVelocity(comp.Owner, Vector2.Zero, body: body);
+                        _physics.SetAngularVelocity(comp.Owner, 0f, body: body);
+                        _physics.SetLinearDamping(body, ShuttleLinearDamping);
+                        _physics.SetAngularDamping(body, ShuttleAngularDamping);
                     }
 
                     TryComp(comp.Owner, out shuttle);
@@ -521,8 +521,8 @@ public sealed partial class ShuttleSystem
 
         if (TryComp<PhysicsComponent>(component.Owner, out var shuttleBody))
         {
-            shuttleBody.LinearVelocity = Vector2.Zero;
-            shuttleBody.AngularVelocity = 0f;
+            _physics.SetLinearVelocity(component.Owner, Vector2.Zero, body: shuttleBody);
+            _physics.SetAngularVelocity(component.Owner, 0f, body: shuttleBody);
         }
 
         xform.Coordinates = new EntityCoordinates(targetXform.MapUid.Value, spawnPos);

Content.Server/Shuttles/Systems/ShuttleSystem.cs

@@ -85,15 +85,16 @@ namespace Content.Server.Shuttles.Systems
             // Look this is jank but it's a placeholder until we design it.
             if (args.NewFixtures.Count == 0) return;
 
-            var manager = Comp<FixturesComponent>(args.NewFixtures[0].Body.Owner);
+            var uid = args.NewFixtures[0].Body.Owner;
+            var manager = Comp<FixturesComponent>(uid);
 
             foreach (var fixture in args.NewFixtures)
             {
-                _physics.SetDensity(fixture, TileMassMultiplier, manager, false);
-                _fixtures.SetRestitution(fixture, 0.1f, manager, false);
+                _physics.SetDensity(uid, fixture, TileMassMultiplier, false, manager);
+                _fixtures.SetRestitution(uid, fixture, 0.1f, false, manager);
             }
 
-            _fixtures.FixtureUpdate(manager, args.NewFixtures[0].Body);
+            _fixtures.FixtureUpdate(uid, manager: manager);
         }
 
         private void OnGridInit(GridInitializeEvent ev)
@@ -118,11 +119,11 @@ namespace Content.Server.Shuttles.Systems
 
             if (component.Enabled)
             {
-                Enable(physicsComponent);
+                Enable(uid, physicsComponent);
             }
         }
 
-        public void Toggle(ShuttleComponent component)
+        public void Toggle(EntityUid uid, ShuttleComponent component)
         {
             if (!EntityManager.TryGetComponent(component.Owner, out PhysicsComponent? physicsComponent)) return;
 
@@ -130,28 +131,32 @@ namespace Content.Server.Shuttles.Systems
 
             if (component.Enabled)
             {
-                Enable(physicsComponent);
+                Enable(uid, physicsComponent);
             }
             else
             {
-                Disable(physicsComponent);
+                Disable(uid, physicsComponent);
             }
         }
 
-        private void Enable(PhysicsComponent component)
+        private void Enable(EntityUid uid, PhysicsComponent component)
         {
-            component.BodyType = BodyType.Dynamic;
-            component.BodyStatus = BodyStatus.InAir;
-            component.FixedRotation = false;
-            component.LinearDamping = ShuttleLinearDamping;
-            component.AngularDamping = ShuttleAngularDamping;
+            FixturesComponent? manager = null;
+
+            _physics.SetBodyType(uid, BodyType.Dynamic, manager: manager, body: component);
+            _physics.SetBodyStatus(component, BodyStatus.InAir);
+            _physics.SetFixedRotation(uid, false, manager: manager, body: component);
+            _physics.SetLinearDamping(component, ShuttleLinearDamping);
+            _physics.SetAngularDamping(component, ShuttleAngularDamping);
         }
 
-        private void Disable(PhysicsComponent component)
+        private void Disable(EntityUid uid, PhysicsComponent component)
         {
-            component.BodyType = BodyType.Static;
-            component.BodyStatus = BodyStatus.OnGround;
-            component.FixedRotation = true;
+            FixturesComponent? manager = null;
+
+            _physics.SetBodyType(uid, BodyType.Static, manager: manager, body: component);
+            _physics.SetBodyStatus(component, BodyStatus.OnGround);
+            _physics.SetFixedRotation(uid, true, manager: manager, body: component);
         }
 
         private void OnShuttleShutdown(EntityUid uid, ShuttleComponent component, ComponentShutdown args)
@@ -164,7 +169,7 @@ namespace Content.Server.Shuttles.Systems
                 return;
             }
 
-            Disable(physicsComponent);
+            Disable(uid, physicsComponent);
         }
     }
 }

Content.Server/Shuttles/Systems/ThrusterSystem.cs

@@ -262,17 +262,8 @@ namespace Content.Server.Shuttles.Systems
                         component.BurnPoly.Count > 0)
                     {
                         var shape = new PolygonShape();
-
                         shape.SetVertices(component.BurnPoly);
-
-                        var fixture = new Fixture(physicsComponent, shape)
-                        {
-                            ID = BurnFixture,
-                            Hard = false,
-                            CollisionLayer = (int) CollisionGroup.FullTileMask
-                        };
-
-                        _fixtureSystem.TryCreateFixture(physicsComponent, fixture);
+                        _fixtureSystem.TryCreateFixture(uid, shape, BurnFixture, hard: false, collisionLayer: (int) CollisionGroup.FullTileMask);
                     }
 
                     break;
@@ -352,7 +343,7 @@ namespace Content.Server.Shuttles.Systems
 
             if (EntityManager.TryGetComponent(uid, out PhysicsComponent? physicsComponent))
             {
-                _fixtureSystem.DestroyFixture(physicsComponent, BurnFixture);
+                _fixtureSystem.DestroyFixture(uid, BurnFixture, body: physicsComponent);
             }
 
             _activeThrusters.Remove(component);

Content.Server/Singularity/EntitySystems/GravityWellSystem.cs

@@ -183,9 +183,11 @@ public sealed class GravityWellSystem : SharedGravityWellSystem
         var minRange2 = MathF.Max(minRange * minRange, MinGravPulseRange); // Cache square value for speed. Also apply a sane minimum value to the minimum value so that div/0s don't happen.
         foreach(var entity in _lookup.GetEntitiesInRange(mapPos.MapId, epicenter, maxRange, flags: LookupFlags.Dynamic | LookupFlags.Sundries))
         {
-            if(!TryComp<PhysicsComponent?>(entity, out var physics)
+            if (!TryComp<PhysicsComponent>(entity, out var physics)
                 || physics.BodyType == BodyType.Static)
+            {
                 continue;
+            }
 
             if(!CanGravPulseAffect(entity))
                 continue;
@@ -196,7 +198,7 @@ public sealed class GravityWellSystem : SharedGravityWellSystem
                 continue;
 
             var scaling = (1f / distance2) * physics.Mass; // TODO: Variable falloff gradiants.
-            _physics.ApplyLinearImpulse(physics, (displacement * baseMatrixDeltaV) * scaling);
+            _physics.ApplyLinearImpulse(entity, (displacement * baseMatrixDeltaV) * scaling, body: physics);
         }
     }
 

Content.Server/StationEvents/Events/MeteorSwarm.cs

@@ -2,11 +2,14 @@ using Content.Server.GameTicking;
 using Content.Shared.Spawners.Components;
 using Robust.Shared.Map;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.Server.StationEvents.Events
 {
     public sealed class MeteorSwarm : StationEventSystem
     {
+        [Dependency] private readonly SharedPhysicsSystem _physics = default!;
+
         public override string Prototype => "MeteorSwarm";
 
         private float _cooldown;
@@ -70,12 +73,7 @@ namespace Content.Server.StationEvents.Events
 
             foreach (var grid in MapManager.GetAllMapGrids(mapId))
             {
-                if (!TryComp<PhysicsComponent>(grid.Owner, out var gridBody))
-                {
-                    continue;
-                }
-
-                var aabb = gridBody.GetWorldAABB();
+                var aabb = _physics.GetWorldAABB(grid.Owner);
                 playableArea = playableArea?.Union(aabb) ?? aabb;
             }
 
@@ -97,15 +95,15 @@ namespace Content.Server.StationEvents.Events
                 var spawnPosition = new MapCoordinates(center + offset, mapId);
                 var meteor = EntityManager.SpawnEntity("MeteorLarge", spawnPosition);
                 var physics = EntityManager.GetComponent<PhysicsComponent>(meteor);
-                physics.BodyStatus = BodyStatus.InAir;
-                physics.LinearDamping = 0f;
-                physics.AngularDamping = 0f;
-                physics.ApplyLinearImpulse(-offset.Normalized * MeteorVelocity * physics.Mass);
-                physics.ApplyAngularImpulse(
-                    // Get a random angular velocity.
-                    physics.Mass * ((MaxAngularVelocity - MinAngularVelocity) * RobustRandom.NextFloat() +
-                                    MinAngularVelocity));
-                // TODO: God this disgusts me but projectile needs a refactor.
+                _physics.SetBodyStatus(physics, BodyStatus.InAir);
+                _physics.SetLinearDamping(physics, 0f);
+                _physics.SetAngularDamping(physics, 0f);
+                _physics.ApplyLinearImpulse(meteor, -offset.Normalized * MeteorVelocity * physics.Mass, body: physics);
+                _physics.ApplyAngularImpulse(
+                    meteor,
+                    physics.Mass * ((MaxAngularVelocity - MinAngularVelocity) * RobustRandom.NextFloat() + MinAngularVelocity),
+                    body: physics);
+
                 EnsureComp<TimedDespawnComponent>(meteor).Lifetime = 120f;
             }
         }

Content.Server/Storage/EntitySystems/EntityStorageSystem.cs

@@ -19,6 +19,7 @@ using Robust.Shared.Containers;
 using Robust.Shared.Map;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
 
 namespace Content.Server.Storage.EntitySystems;
@@ -34,6 +35,7 @@ public sealed class EntityStorageSystem : EntitySystem
     [Dependency] private readonly PlaceableSurfaceSystem _placeableSurface = default!;
     [Dependency] private readonly PopupSystem _popupSystem = default!;
     [Dependency] private readonly AtmosphereSystem _atmos = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
     [Dependency] private readonly IMapManager _map = default!;
 
     public const string ContainerName = "entity_storage";
@@ -323,7 +325,9 @@ public sealed class EntityStorageSystem : EntitySystem
 
         if (TryComp<PhysicsComponent>(toAdd, out var phys))
         {
-            if (component.MaxSize < phys.GetWorldAABB().Size.X || component.MaxSize < phys.GetWorldAABB().Size.Y)
+            var aabb = _physics.GetWorldAABB(toAdd, body: phys);
+
+            if (component.MaxSize < aabb.Size.X || component.MaxSize < aabb.Size.Y)
                 return false;
         }
 
@@ -387,11 +391,11 @@ public sealed class EntityStorageSystem : EntitySystem
             if (component.Open)
             {
                 component.RemovedMasks = fixture.CollisionLayer & component.MasksToRemove;
-                fixture.CollisionLayer &= ~component.MasksToRemove;
+                _physics.SetCollisionLayer(uid, fixture, fixture.CollisionLayer & ~component.MasksToRemove, manager: fixtures);
             }
             else
             {
-                fixture.CollisionLayer |= component.RemovedMasks;
+                _physics.SetCollisionLayer(uid, fixture, fixture.CollisionLayer | component.RemovedMasks, manager: fixtures);
                 component.RemovedMasks = 0;
             }
         }

Content.Server/Temperature/Components/TemperatureComponent.cs

@@ -52,7 +52,7 @@ namespace Content.Server.Temperature.Components
         {
             get
             {
-                if (IoCManager.Resolve<IEntityManager>().TryGetComponent<PhysicsComponent?>(Owner, out var physics) && physics.FixturesMass != 0)
+                if (IoCManager.Resolve<IEntityManager>().TryGetComponent<PhysicsComponent>(Owner, out var physics) && physics.FixturesMass != 0)
                 {
                     return SpecificHeat * physics.FixturesMass;
                 }

Content.Server/Weapons/Ranged/Systems/GunSystem.cs

@@ -243,12 +243,12 @@ public sealed partial class GunSystem : SharedGunSystem
     public void ShootProjectile(EntityUid uid, Vector2 direction, Vector2 gunVelocity, EntityUid? user = null, float speed = 20f)
     {
         var physics = EnsureComp<PhysicsComponent>(uid);
-        physics.BodyStatus = BodyStatus.InAir;
+        Physics.SetBodyStatus(physics, BodyStatus.InAir);
 
         var targetMapVelocity = gunVelocity + direction.Normalized * speed;
         var currentMapVelocity = Physics.GetMapLinearVelocity(uid, physics);
         var finalLinear = physics.LinearVelocity + targetMapVelocity - currentMapVelocity;
-        Physics.SetLinearVelocity(physics, finalLinear);
+        Physics.SetLinearVelocity(uid, finalLinear, body: physics);
 
         if (user != null)
         {

Content.Server/Weapons/Ranged/Systems/TetherGunSystem.cs

@@ -111,12 +111,12 @@ public sealed class TetherGunSystem : SharedTetherGunSystem
 
         if (TryComp<PhysicsComponent>(msg.Entity, out var body))
         {
-            body.BodyStatus = BodyStatus.InAir;
+            _physics.SetBodyStatus(body, BodyStatus.InAir);
         }
 
-        _physics.WakeBody(bodyA);
-        _physics.WakeBody(bodyB);
-        var joint = _joints.CreateMouseJoint(bodyA.Owner, bodyB.Owner, id: JointId);
+        _physics.WakeBody(tether, body: bodyA);
+        _physics.WakeBody(msg.Entity, body: bodyB);
+        var joint = _joints.CreateMouseJoint(tether, msg.Entity, id: JointId);
 
         SharedJointSystem.LinearStiffness(5f, 0.7f, bodyA.Mass, bodyB.Mass, out var stiffness, out var damping);
         joint.Stiffness = stiffness;
@@ -147,8 +147,9 @@ public sealed class TetherGunSystem : SharedTetherGunSystem
         {
             Timer.Spawn(1000, () =>
             {
-                if (Deleted(body.Owner)) return;
-                body.BodyStatus = BodyStatus.OnGround;
+                if (Deleted(weh.Entity)) return;
+
+                _physics.SetBodyStatus(body, BodyStatus.OnGround);
             });
         }
 
@@ -186,7 +187,7 @@ public sealed class TetherGunSystem : SharedTetherGunSystem
             // Force it awake, always
             if (bodyQuery.TryGetComponent(entity.Entity, out var body))
             {
-                _physics.WakeBody(body);
+                _physics.WakeBody(entity.Entity, body: body);
             }
         }
 

Content.Server/Xenoarchaeology/XenoArtifacts/Effects/Systems/PhasingArtifactSystem.cs

@@ -25,12 +25,12 @@ public sealed class PhasingArtifactSystem : EntitySystem
 
     private void OnActivate(EntityUid uid, PhasingArtifactComponent component, ArtifactActivatedEvent args)
     {
-        if (!TryComp<FixturesComponent>(uid, out var fixtures) || !TryComp<PhysicsComponent>(uid, out var phys))
+        if (!TryComp<FixturesComponent>(uid, out var fixtures))
             return;
 
-        foreach (var (_, fixture) in fixtures.Fixtures)
+        foreach (var fixture in fixtures.Fixtures.Values)
         {
-            _physics.SetHard(fixture, false, fixtures);
+            _physics.SetHard(uid, fixture, false, fixtures);
         }
     }
 }

Content.Shared/Blocking/BlockingSystem.cs

@@ -186,14 +186,12 @@ public sealed partial class BlockingSystem : EntitySystem
 
         if (TryComp<PhysicsComponent>(user, out var physicsComponent))
         {
-            var fixture = new Fixture(physicsComponent, component.Shape)
-            {
-                ID = BlockingComponent.BlockFixtureID,
-                Hard = true,
-                CollisionLayer = (int) CollisionGroup.WallLayer
-            };
-
-            _fixtureSystem.TryCreateFixture(physicsComponent, fixture);
+            _fixtureSystem.TryCreateFixture(user,
+                component.Shape,
+                BlockingComponent.BlockFixtureID,
+                hard: true,
+                collisionLayer: (int) CollisionGroup.WallLayer,
+                body: physicsComponent);
         }
 
         component.IsBlocking = true;
@@ -243,8 +241,8 @@ public sealed partial class BlockingSystem : EntitySystem
                 _transformSystem.Unanchor(xform);
 
             _actionsSystem.SetToggled(component.BlockingToggleAction, false);
-            _fixtureSystem.DestroyFixture(physicsComponent, BlockingComponent.BlockFixtureID);
-            _physics.SetBodyType(physicsComponent, blockingUserComponent.OriginalBodyType);
+            _fixtureSystem.DestroyFixture(user, BlockingComponent.BlockFixtureID, body: physicsComponent);
+            _physics.SetBodyType(user, blockingUserComponent.OriginalBodyType, body: physicsComponent);
             _popupSystem.PopupEntity(msgUser, user, user);
             _popupSystem.PopupEntity(msgOther, user, Filter.PvsExcept(user), true);
         }

Content.Shared/Blocking/Components/BlockingComponent.cs

@@ -31,9 +31,8 @@ public sealed class BlockingComponent : Component
     /// <summary>
     /// The shape of the blocking fixture that will be dynamically spawned
     /// </summary>
-    [ViewVariables(VVAccess.ReadWrite)]
-    [DataField("shape")]
-    public IPhysShape Shape = new PhysShapeCircle {Radius = 0.5F};
+    [ViewVariables(VVAccess.ReadWrite)] [DataField("shape")]
+    public IPhysShape Shape = new PhysShapeCircle(0.5f);
 
     /// <summary>
     /// The damage modifer to use while passively blocking

Content.Shared/Doors/Systems/SharedDoorSystem.cs

@@ -381,7 +381,10 @@ public abstract class SharedDoorSystem : EntitySystem
     #endregion
 
     #region Collisions
-    protected virtual void SetCollidable(EntityUid uid, bool collidable,
+
+    protected virtual void SetCollidable(
+        EntityUid uid,
+        bool collidable,
         DoorComponent? door = null,
         PhysicsComponent? physics = null,
         OccluderComponent? occluder = null)
@@ -390,13 +393,13 @@ public abstract class SharedDoorSystem : EntitySystem
             return;
 
         if (Resolve(uid, ref physics, false))
-            PhysicsSystem.SetCanCollide(physics, collidable);
+            PhysicsSystem.SetCanCollide(uid, collidable, body: physics);
 
         if (!collidable)
             door.CurrentlyCrushing.Clear();
 
         if (door.Occludes)
-            _occluder.SetEnabled(uid, collidable);
+            _occluder.SetEnabled(uid, collidable, occluder);
     }
 
     /// <summary>

Content.Shared/Explosion/SharedTriggerOnProximityComponent.cs

@@ -1,5 +1,8 @@
+using Robust.Shared.GameStates;
+
 namespace Content.Shared.Explosion;
 
+[NetworkedComponent]
 public abstract class SharedTriggerOnProximityComponent : Component
 {
 

Content.Shared/Friction/TileFrictionController.cs

@@ -78,6 +78,8 @@ namespace Content.Shared.Friction
 
             foreach (var body in mapComponent.AwakeBodies)
             {
+                var uid = body.Owner;
+
                 // Only apply friction when it's not a mob (or the mob doesn't have control)
                 if (prediction && !body.Predict ||
                     body.BodyStatus == BodyStatus.InAir ||
@@ -86,46 +88,45 @@ namespace Content.Shared.Friction
                     continue;
                 }
 
-                if (body.LinearVelocity.Equals(Vector2.Zero) && body.AngularVelocity.Equals(0f)) continue;
+                if (body.LinearVelocity.Equals(Vector2.Zero) && body.AngularVelocity.Equals(0f))
+                    continue;
 
-                DebugTools.Assert(!Deleted(body.Owner));
-
-                if (!xformQuery.TryGetComponent(body.Owner, out var xform))
+                if (!xformQuery.TryGetComponent(uid, out var xform))
                 {
                     Logger.ErrorS("physics", $"Unable to get transform for {ToPrettyString(body.Owner)} in tilefrictioncontroller");
                     continue;
                 }
 
-                var surfaceFriction = GetTileFriction(body, xform);
+                var surfaceFriction = GetTileFriction(uid, body, xform);
                 var bodyModifier = 1f;
 
-                if (frictionQuery.TryGetComponent(body.Owner, out var frictionComp))
+                if (frictionQuery.TryGetComponent(uid, out var frictionComp))
                 {
                     bodyModifier = frictionComp.Modifier;
                 }
 
                 var ev = new TileFrictionEvent(bodyModifier);
 
-                RaiseLocalEvent(body.Owner, ref ev);
+                RaiseLocalEvent(uid, ref ev);
                 bodyModifier = ev.Modifier;
 
                 // If we're sandwiched between 2 pullers reduce friction
                 // Might be better to make this dynamic and check how many are in the pull chain?
                 // Either way should be much faster for now.
-                if (pullerQuery.TryGetComponent(body.Owner, out var puller) && puller.Pulling != null &&
-                    pullableQuery.TryGetComponent(body.Owner, out var pullable) && pullable.BeingPulled)
+                if (pullerQuery.TryGetComponent(uid, out var puller) && puller.Pulling != null &&
+                    pullableQuery.TryGetComponent(uid, out var pullable) && pullable.BeingPulled)
                 {
                     bodyModifier *= 0.2f;
                 }
 
                 var friction = _frictionModifier * surfaceFriction * bodyModifier;
 
-                ReduceLinearVelocity(prediction, body, friction, frameTime);
-                ReduceAngularVelocity(prediction, body, friction, frameTime);
+                ReduceLinearVelocity(uid, prediction, body, friction, frameTime);
+                ReduceAngularVelocity(uid, prediction, body, friction, frameTime);
             }
         }
 
-        private void ReduceLinearVelocity(bool prediction, PhysicsComponent body, float friction, float frameTime)
+        private void ReduceLinearVelocity(EntityUid uid, bool prediction, PhysicsComponent body, float friction, float frameTime)
         {
             var speed = body.LinearVelocity.Length;
 
@@ -153,10 +154,10 @@ namespace Content.Shared.Friction
             var newSpeed = MathF.Max(0.0f, speed - drop);
 
             newSpeed /= speed;
-            _physics.SetLinearVelocity(body, body.LinearVelocity * newSpeed);
+            _physics.SetLinearVelocity(uid, body.LinearVelocity * newSpeed, body: body);
         }
 
-        private void ReduceAngularVelocity(bool prediction, PhysicsComponent body, float friction, float frameTime)
+        private void ReduceAngularVelocity(EntityUid uid, bool prediction, PhysicsComponent body, float friction, float frameTime)
         {
             var speed = MathF.Abs(body.AngularVelocity);
 
@@ -184,14 +185,14 @@ namespace Content.Shared.Friction
             var newSpeed = MathF.Max(0.0f, speed - drop);
 
             newSpeed /= speed;
-            _physics.SetAngularVelocity(body, body.AngularVelocity * newSpeed);
+            _physics.SetAngularVelocity(uid, body.AngularVelocity * newSpeed, body: body);
         }
 
         [Pure]
-        private float GetTileFriction(PhysicsComponent body, TransformComponent xform)
+        private float GetTileFriction(EntityUid uid, PhysicsComponent body, TransformComponent xform)
         {
             // TODO: Make IsWeightless event-based; we already have grid traversals tracked so just raise events
-            if (_gravity.IsWeightless(body.Owner, body, xform))
+            if (_gravity.IsWeightless(uid, body, xform))
                 return 0.0f;
 
             if (!xform.Coordinates.IsValid(EntityManager)) return 0.0f;
@@ -201,7 +202,8 @@ namespace Content.Shared.Friction
                 var tile = grid.GetTileRef(xform.Coordinates);
 
                 // If it's a map but on an empty tile then just assume it has gravity.
-                if (tile.Tile.IsEmpty && HasComp<MapComponent>(xform.GridUid) &&
+                if (tile.Tile.IsEmpty &&
+                    HasComp<MapComponent>(xform.GridUid) &&
                     (!TryComp<GravityComponent>(xform.GridUid, out var gravity) || gravity.Enabled))
                 {
                     return DefaultFriction;

Content.Shared/Mobs/Systems/MobStateSystem.Subscribers.cs

@@ -42,21 +42,20 @@ public partial class MobStateSystem
 
     private void OnStateExitSubscribers(EntityUid target, MobStateComponent component, MobState state)
     {
-        var uid = component.Owner;
         switch (state)
         {
             case MobState.Alive:
                 //unused
                 break;
             case MobState.Critical:
-                _standing.Stand(uid);
+                _standing.Stand(target);
                 break;
             case MobState.Dead:
-                RemComp<CollisionWakeComponent>(uid);
-                _standing.Stand(uid);
-                if (!_standing.IsDown(uid) && TryComp<PhysicsComponent>(uid, out var physics))
+                RemComp<CollisionWakeComponent>(target);
+                _standing.Stand(target);
+                if (!_standing.IsDown(target) && TryComp<PhysicsComponent>(target, out var physics))
                 {
-                    _physics.SetCanCollide(physics, true);
+                    _physics.SetCanCollide(target, true, body: physics);
                 }
 
                 break;
@@ -70,28 +69,27 @@ public partial class MobStateSystem
 
     private void OnStateEnteredSubscribers(EntityUid target, MobStateComponent component, MobState state)
     {
-        var uid = component.Owner;
-        _blocker.UpdateCanMove(uid); //update movement anytime a state changes
+        _blocker.UpdateCanMove(target); //update movement anytime a state changes
         switch (state)
         {
             case MobState.Alive:
-                _standing.Stand(uid);
-                _appearance.SetData(uid, MobStateVisuals.State, MobState.Alive);
+                _standing.Stand(target);
+                _appearance.SetData(target, MobStateVisuals.State, MobState.Alive);
                 break;
             case MobState.Critical:
-                _standing.Down(uid);
-                _appearance.SetData(uid, MobStateVisuals.State, MobState.Critical);
+                _standing.Down(target);
+                _appearance.SetData(target, MobStateVisuals.State, MobState.Critical);
                 break;
             case MobState.Dead:
-                EnsureComp<CollisionWakeComponent>(uid);
-                _standing.Down(uid);
+                EnsureComp<CollisionWakeComponent>(target);
+                _standing.Down(target);
 
-                if (_standing.IsDown(uid) && TryComp<PhysicsComponent>(uid, out var physics))
+                if (_standing.IsDown(target) && TryComp<PhysicsComponent>(target, out var physics))
                 {
-                    _physics.SetCanCollide(physics, false);
+                    _physics.SetCanCollide(target, false, body: physics);
                 }
 
-                _appearance.SetData(uid, MobStateVisuals.State, MobState.Dead);
+                _appearance.SetData(target, MobStateVisuals.State, MobState.Dead);
                 break;
             case MobState.Invalid:
                 //unused;

Content.Shared/Movement/Systems/SharedMoverController.cs

@@ -34,6 +34,7 @@ namespace Content.Shared.Movement.Systems
         [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager = default!;
         [Dependency] private readonly InventorySystem _inventory = default!;
         [Dependency] private readonly SharedContainerSystem _container = default!;
+        [Dependency] private readonly EntityLookupSystem _lookup = default!;
         [Dependency] private readonly SharedGravitySystem _gravity = default!;
         [Dependency] private readonly MobStateSystem _mobState = default!;
         [Dependency] private readonly SharedAudioSystem _audio = default!;
@@ -304,10 +305,10 @@ namespace Content.Shared.Movement.Systems
             if (!weightless || touching)
                 Accelerate(ref velocity, in worldTotal, accel, frameTime);
 
-            PhysicsSystem.SetLinearVelocity(physicsComponent, velocity);
+            PhysicsSystem.SetLinearVelocity(physicsComponent.Owner, velocity, body: physicsComponent);
 
             // Ensures that players do not spiiiiiiin
-            PhysicsSystem.SetAngularVelocity(physicsComponent, 0);
+            PhysicsSystem.SetAngularVelocity(physicsComponent.Owner, 0, body: physicsComponent);
         }
 
         private void Friction(float minimumFrictionSpeed, float frameTime, float friction, ref Vector2 velocity)
@@ -364,7 +365,7 @@ namespace Content.Shared.Movement.Systems
         /// </summary>
         private bool IsAroundCollider(SharedPhysicsSystem broadPhaseSystem, TransformComponent transform, MobMoverComponent mover, PhysicsComponent collider)
         {
-            var enlargedAABB = collider.GetWorldAABB().Enlarged(mover.GrabRangeVV);
+            var enlargedAABB = _lookup.GetWorldAABB(collider.Owner, transform).Enlarged(mover.GrabRangeVV);
 
             foreach (var otherCollider in broadPhaseSystem.GetCollidingEntities(transform.MapID, enlargedAABB))
             {

Content.Shared/Pulling/Events/PullMessage.cs

@@ -1,5 +1,4 @@
-using Robust.Shared.Physics;
-using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Components;
 
 namespace Content.Shared.Physics.Pull
 {

Content.Shared/Pulling/Systems/SharedPullingStateManagementSystem.cs

@@ -146,7 +146,7 @@ namespace Content.Shared.Pulling
                 if (!_timing.ApplyingState)
                 {
                     // Joint startup
-                    var union = _physics.GetHardAABB(pullerPhysics).Union(_physics.GetHardAABB(pullablePhysics));
+                    var union = _physics.GetHardAABB(puller.Owner).Union(_physics.GetHardAABB(pullable.Owner, body: pullablePhysics));
                     var length = Math.Max(union.Size.X, union.Size.Y) * 0.75f;
 
                     var joint = _jointSystem.CreateDistanceJoint(pullablePhysics.Owner, pullerPhysics.Owner, id: pullable.PullJointId);

Content.Shared/Pulling/Systems/SharedPullingSystem.Actions.cs

@@ -11,15 +11,17 @@ using Robust.Shared.Containers;
 using Robust.Shared.Map;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Content.Shared.Pulling
 {
-    public abstract partial class SharedPullingSystem : EntitySystem
+    public abstract partial class SharedPullingSystem
     {
         [Dependency] private readonly ActionBlockerSystem _blocker = default!;
         [Dependency] private readonly SharedContainerSystem _containerSystem = default!;
         [Dependency] private readonly SharedHandsSystem _handsSystem = default!;
         [Dependency] private readonly SharedInteractionSystem _interaction = default!;
+        [Dependency] private readonly SharedPhysicsSystem _physics = default!;
         [Dependency] private readonly ISharedAdminLogManager _adminLogger = default!;
 
         public bool CanPull(EntityUid puller, EntityUid pulled)
@@ -102,7 +104,7 @@ namespace Content.Shared.Pulling
 
             if (TryComp<PhysicsComponent>(pullable.Owner, out var pullablePhysics))
             {
-                pullablePhysics.FixedRotation = pullable.PrevFixedRotation;
+                _physics.SetFixedRotation(pullable.Owner, pullable.PrevFixedRotation, body: pullablePhysics);
             }
 
             _pullSm.ForceRelationship(null, pullable);
@@ -198,7 +200,7 @@ namespace Content.Shared.Pulling
 
             _pullSm.ForceRelationship(puller, pullable);
             pullable.PrevFixedRotation = pullablePhysics.FixedRotation;
-            pullablePhysics.FixedRotation = pullable.FixedRotationOnPull;
+            _physics.SetFixedRotation(pullable.Owner, pullable.FixedRotationOnPull, body: pullablePhysics);
             _adminLogger.Add(LogType.Action, LogImpact.Low,
                 $"{ToPrettyString(puller.Owner):user} started pulling {ToPrettyString(pullable.Owner):target}");
             return true;

Content.Shared/Revenant/EntitySystems/SharedCorporealSystem.cs

@@ -40,8 +40,8 @@ public abstract class SharedCorporealSystem : EntitySystem
         {
             var fixture = fixtures.Fixtures.Values.First();
 
-            _physics.SetCollisionMask(fixture, (int) (CollisionGroup.SmallMobMask | CollisionGroup.GhostImpassable));
-            _physics.SetCollisionLayer(fixture, (int) CollisionGroup.SmallMobLayer);
+            _physics.SetCollisionMask(uid, fixture, (int) (CollisionGroup.SmallMobMask | CollisionGroup.GhostImpassable), fixtures);
+            _physics.SetCollisionLayer(uid, fixture, (int) CollisionGroup.SmallMobLayer, fixtures);
         }
         _movement.RefreshMovementSpeedModifiers(uid);
     }
@@ -54,8 +54,8 @@ public abstract class SharedCorporealSystem : EntitySystem
         {
             var fixture = fixtures.Fixtures.Values.First();
 
-            _physics.SetCollisionMask(fixture, (int) CollisionGroup.GhostImpassable);
-            _physics.SetCollisionLayer(fixture, 0);
+            _physics.SetCollisionMask(uid, fixture, (int) CollisionGroup.GhostImpassable, fixtures);
+            _physics.SetCollisionLayer(uid, fixture, 0, fixtures);
         }
         component.MovementSpeedDebuff = 1; //just so we can avoid annoying code elsewhere
         _movement.RefreshMovementSpeedModifiers(uid);

Content.Shared/Singularity/EntitySystems/SharedEventHorizonSystem.cs

@@ -6,6 +6,7 @@ using Robust.Shared.Physics.Systems;
 
 using Content.Shared.Ghost;
 using Content.Shared.Singularity.Components;
+using Robust.Shared.Physics;
 
 namespace Content.Shared.Singularity.EntitySystems;
 
@@ -14,10 +15,11 @@ namespace Content.Shared.Singularity.EntitySystems;
 /// </summary>
 public abstract class SharedEventHorizonSystem : EntitySystem
 {
-#region Dependencies
+
     [Dependency] private readonly FixtureSystem _fixtures = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
     [Dependency] protected readonly IViewVariablesManager Vvm = default!;
-#endregion Dependencies
+
     public override void Initialize()
     {
         base.Initialize();
@@ -62,7 +64,7 @@ public abstract class SharedEventHorizonSystem : EntitySystem
             return;
 
         eventHorizon.Radius = value;
-        EntityManager.Dirty(eventHorizon);
+        Dirty(eventHorizon);
         if (updateFixture)
             UpdateEventHorizonFixture(uid, eventHorizon: eventHorizon);
     }
@@ -85,7 +87,7 @@ public abstract class SharedEventHorizonSystem : EntitySystem
             return;
 
         eventHorizon.CanBreachContainment = value;
-        EntityManager.Dirty(eventHorizon);
+        Dirty(eventHorizon);
         if (updateFixture)
             UpdateEventHorizonFixture(uid, eventHorizon: eventHorizon);
     }
@@ -108,7 +110,7 @@ public abstract class SharedEventHorizonSystem : EntitySystem
             return;
 
         eventHorizon.HorizonFixtureId = value;
-        EntityManager.Dirty(eventHorizon);
+        Dirty(eventHorizon);
         if (updateFixture)
             UpdateEventHorizonFixture(uid, eventHorizon: eventHorizon);
     }
@@ -117,25 +119,26 @@ public abstract class SharedEventHorizonSystem : EntitySystem
     /// Updates the state of the fixture associated with the event horizon.
     /// </summary>
     /// <param name="eventHorizon">The uid of the event horizon associated with the fixture to update.</param>
-    /// <param name="fixtures">The physics component containing the fixture to update.</param>
+    /// <param name="physics">The physics component containing the fixture to update.</param>
     /// <param name="eventHorizon">The state of the event horizon associated with the fixture to update.</param>
-    public void UpdateEventHorizonFixture(EntityUid uid, PhysicsComponent? fixtures = null, EventHorizonComponent? eventHorizon = null)
+    public void UpdateEventHorizonFixture(EntityUid uid, PhysicsComponent? physics = null, EventHorizonComponent? eventHorizon = null)
     {
         if(!Resolve(uid, ref eventHorizon))
             return;
 
         var fixtureId = eventHorizon.HorizonFixtureId;
-        if (fixtureId == null || !Resolve(eventHorizon.Owner, ref fixtures, logMissing: false))
+        FixturesComponent? manager = null;
+
+        if (fixtureId == null || !Resolve(uid, ref manager, ref physics, logMissing: false))
             return;
 
-        var fixture = _fixtures.GetFixtureOrNull(fixtures, fixtureId);
+        var fixture = _fixtures.GetFixtureOrNull(uid, fixtureId, manager);
         if (fixture == null)
             return;
 
         var shape = (PhysShapeCircle)fixture.Shape;
-        shape.Radius = eventHorizon.Radius;
-        fixture.Hard = !eventHorizon.CanBreachContainment;
-        EntityManager.Dirty(fixtures);
+        _physics.SetRadius(uid, fixture, shape, eventHorizon.Radius, manager: manager, body: physics);
+        _physics.SetHard(uid, fixture, true, manager);
     }
 
 #endregion Getters/Setters
@@ -181,8 +184,8 @@ public abstract class SharedEventHorizonSystem : EntitySystem
         var otherUid = args.BodyB.Owner;
 
         // For prediction reasons always want the client to ignore these.
-        if (EntityManager.HasComponent<MapGridComponent>(otherUid) ||
-            EntityManager.HasComponent<SharedGhostComponent>(otherUid))
+        if (HasComp<MapGridComponent>(otherUid) ||
+            HasComp<SharedGhostComponent>(otherUid))
         {
             args.Cancelled = true;
             return true;
@@ -190,8 +193,8 @@ public abstract class SharedEventHorizonSystem : EntitySystem
 
         // If we can, breach containment
         // otherwise, check if it's containment and just keep the collision
-        if (EntityManager.HasComponent<ContainmentFieldComponent>(otherUid) ||
-            EntityManager.HasComponent<ContainmentFieldGeneratorComponent>(otherUid))
+        if (HasComp<ContainmentFieldComponent>(otherUid) ||
+            HasComp<ContainmentFieldGeneratorComponent>(otherUid))
         {
             if (comp.CanBreachContainment)
                 args.Cancelled = true;

Content.Shared/Singularity/EntitySystems/SharedSingularitySystem.cs

@@ -355,7 +355,7 @@ public abstract class SharedSingularitySystem : EntitySystem
     {
         _physics.SetBodyStatus(comp, (args.NewValue > 1) ? BodyStatus.InAir : BodyStatus.OnGround);
         if (args.NewValue <= 1 && args.OldValue > 1) // Apparently keeps singularities from getting stuck in the corners of containment fields.
-            _physics.SetLinearVelocity(comp, Vector2.Zero); // No idea how stopping the singularities movement keeps it from getting stuck though.
+            _physics.SetLinearVelocity(uid, Vector2.Zero, body: comp); // No idea how stopping the singularities movement keeps it from getting stuck though.
     }
 
     /// <summary>

Content.Shared/Slippery/SlipperySystem.cs

@@ -85,7 +85,7 @@ namespace Content.Shared.Slippery
                 return;
 
             if (TryComp(other, out PhysicsComponent? physics))
-                _physics.SetLinearVelocity(physics, physics.LinearVelocity * component.LaunchForwardsMultiplier);
+                _physics.SetLinearVelocity(other, physics.LinearVelocity * component.LaunchForwardsMultiplier, body: physics);
 
             var playSound = !_statusEffectsSystem.HasStatusEffect(other, "KnockedDown");
 

Content.Shared/Standing/StandingStateSystem.cs

@@ -96,7 +96,7 @@ namespace Content.Shared.Standing
                         continue;
 
                     standingState.ChangedFixtures.Add(key);
-                    _physics.SetCollisionMask(fixture, fixture.CollisionMask & ~StandingCollisionLayer);
+                    _physics.SetCollisionMask(uid, fixture, fixture.CollisionMask & ~StandingCollisionLayer, manager: fixtureComponent);
                 }
             }
 
@@ -148,7 +148,7 @@ namespace Content.Shared.Standing
                 foreach (var key in standingState.ChangedFixtures)
                 {
                     if (fixtureComponent.Fixtures.TryGetValue(key, out var fixture))
-                        _physics.SetCollisionMask(fixture, fixture.CollisionMask | StandingCollisionLayer);
+                        _physics.SetCollisionMask(uid, fixture, fixture.CollisionMask | StandingCollisionLayer, fixtureComponent);
                 }
             }
             standingState.ChangedFixtures.Clear();

Content.Shared/Throwing/ThrowingSystem.cs

@@ -60,7 +60,7 @@ public sealed class ThrowingSystem : EntitySystem
         comp.Thrower = user;
         // Give it a l'il spin.
         if (!_tagSystem.HasTag(uid, "NoSpinOnThrow"))
-            _physics.ApplyAngularImpulse(physics, ThrowAngularImpulse);
+            _physics.ApplyAngularImpulse(uid, ThrowAngularImpulse, body: physics);
         else
         {
             if (transform == null)
@@ -75,7 +75,7 @@ public sealed class ThrowingSystem : EntitySystem
             _interactionSystem.ThrownInteraction(user.Value, uid);
 
         var impulseVector = direction.Normalized * strength * physics.Mass;
-        _physics.ApplyLinearImpulse(physics, impulseVector);
+        _physics.ApplyLinearImpulse(uid, impulseVector, body: physics);
 
         // Estimate time to arrival so we can apply OnGround status and slow it much faster.
         var time = (direction / strength).Length;
@@ -109,7 +109,7 @@ public sealed class ThrowingSystem : EntitySystem
             RaiseLocalEvent(physics.Owner, msg);
 
             if (!msg.Cancelled)
-                _physics.ApplyLinearImpulse(userPhysics, -impulseVector * pushbackRatio);
+                _physics.ApplyLinearImpulse(user.Value, -impulseVector * pushbackRatio, body: userPhysics);
         }
     }
 }

Content.Shared/Throwing/ThrownItemSystem.cs

@@ -55,19 +55,16 @@ namespace Content.Shared.Throwing
 
         private void ThrowItem(EntityUid uid, ThrownItemComponent component, ThrownEvent args)
         {
-            if (!EntityManager.TryGetComponent(component.Owner, out FixturesComponent? fixturesComponent) ||
-                fixturesComponent.Fixtures.Count != 1) return;
-            if (!EntityManager.TryGetComponent(component.Owner, out PhysicsComponent? physicsComponent)) return;
-
-            if (fixturesComponent.Fixtures.ContainsKey(ThrowingFixture))
+            if (!EntityManager.TryGetComponent(uid, out FixturesComponent? fixturesComponent) ||
+                fixturesComponent.Fixtures.Count != 1 ||
+                !TryComp<PhysicsComponent>(uid, out var body))
             {
-                Logger.Error($"Found existing throwing fixture on {component.Owner}");
                 return;
             }
+
             var fixture = fixturesComponent.Fixtures.Values.First();
             var shape = fixture.Shape;
-            var throwingFixture = new Fixture(physicsComponent, shape) { CollisionMask = (int) CollisionGroup.ThrownItem, Hard = false, ID = ThrowingFixture };
-            _fixtures.TryCreateFixture(physicsComponent, throwingFixture, manager: fixturesComponent);
+            _fixtures.TryCreateFixture(uid, shape, ThrowingFixture, hard: false, collisionMask: (int) CollisionGroup.ThrownItem, manager: fixturesComponent, body: body);
         }
 
         private void HandleCollision(EntityUid uid, ThrownItemComponent component, ref StartCollideEvent args)
@@ -104,13 +101,13 @@ namespace Content.Shared.Throwing
 
         private void StopThrow(EntityUid uid, ThrownItemComponent thrownItemComponent)
         {
-            if (EntityManager.TryGetComponent(uid, out PhysicsComponent? physicsComponent))
+            if (EntityManager.TryGetComponent(uid, out FixturesComponent? manager))
             {
-                var fixture = _fixtures.GetFixtureOrNull(physicsComponent, ThrowingFixture);
+                var fixture = _fixtures.GetFixtureOrNull(uid, ThrowingFixture, manager: manager);
 
                 if (fixture != null)
                 {
-                    _fixtures.DestroyFixture(physicsComponent, fixture);
+                    _fixtures.DestroyFixture(uid, fixture, manager: manager);
                 }
             }
 

Content.Shared/Weapons/Ranged/Systems/SharedFlyBySoundSystem.cs

@@ -28,21 +28,12 @@ public abstract class SharedFlyBySoundSystem : EntitySystem
 
     private void OnStartup(EntityUid uid, FlyBySoundComponent component, ComponentStartup args)
     {
-        if (!TryComp<PhysicsComponent>(uid, out var body)) return;
+        if (!TryComp<PhysicsComponent>(uid, out var body))
+            return;
 
-        var shape = new PhysShapeCircle()
-        {
-            Radius = component.Range,
-        };
+        var shape = new PhysShapeCircle(component.Range);
 
-        var fixture = new Fixture(body, shape)
-        {
-            Hard = false,
-            ID = FlyByFixture,
-            CollisionLayer = (int) CollisionGroup.MobMask,
-        };
-
-        _fixtures.TryCreateFixture(body, fixture);
+        _fixtures.TryCreateFixture(uid, shape, FlyByFixture, collisionLayer: (int) CollisionGroup.MobMask, hard: false, body: body);
     }
 
     private void OnShutdown(EntityUid uid, FlyBySoundComponent component, ComponentShutdown args)
@@ -53,7 +44,7 @@ public abstract class SharedFlyBySoundSystem : EntitySystem
             return;
         }
 
-        _fixtures.DestroyFixture(body, FlyByFixture);
+        _fixtures.DestroyFixture(uid, FlyByFixture, body: body);
     }
 
     private void OnHandleState(EntityUid uid, FlyBySoundComponent component, ref ComponentHandleState args)

Content.Shared/Weapons/Ranged/Systems/SharedGunSystem.cs

@@ -383,7 +383,7 @@ public abstract partial class SharedGunSystem : EntitySystem
 
         const float impulseStrength = 85.0f; //The bullet impulse strength, TODO: In the future we might want to make it more projectile dependent
         var impulseVector =  shotDirection * impulseStrength;
-        Physics.ApplyLinearImpulse(userPhysics, -impulseVector);
+        Physics.ApplyLinearImpulse(userPhysics.Owner, -impulseVector, body: userPhysics);
     }
     protected abstract void CreateEffect(EntityUid uid, MuzzleFlashEvent message, EntityUid? user = null);
 

Resources/Prototypes/Entities/Mobs/Player/observer.yml

@@ -11,7 +11,6 @@
   - type: Physics
     bodyType: KinematicController
     fixedRotation: true
-    status: OnGround
   - type: Fixtures
     fixtures:
     - shape:

Resources/Prototypes/Entities/Structures/Power/Generation/ame.yml

@@ -102,6 +102,7 @@
     fixtures:
     - shape:
         !type:PhysShapeAabb
+        bounds: "-0.5,-0.5,0.5,0.5"
       density: 190
       mask:
       - FullTileMask