Physics (#3452)

* Content side new physics structure

* BroadPhase outline done

* But we need to fix WorldAABB

* Fix static pvs AABB

* Fix import

* Rando fixes

* B is for balloon

* Change human mob hitbox to circle

* Decent movement

* Start adding friction to player controller

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

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

* Slight mob mover optimisations.

* Player mover kinda works okay.

* Beginnings of testbed

* More testbed

* Circlestack bed

* Namespaces

* BB fixes

* Pull WorldAABB

* Joint pulling

* Semi-decent movement I guess.

* Pulling better

* Bullet controller + old movement

* im too dumb for this shit

* Use kinematic mob controller again

It's probably for the best TBH

* Stashed shitcode

* Remove SlipController

* In which movement code is entirely refactored

* Singularity fix

* Fix ApplyLinearImpulse

* MoveRelay fix

* Fix door collisions

* Disable subfloor collisions

Saves on broadphase a fair bit

* Re-implement ClimbController

* Zumzum's pressure

* Laggy item throwing

* Minor atmos change

* Some caching

* Optimise controllers

* Optimise CollideWith to hell and back

* Re-do throwing and tile friction

* Landing too

* Optimise controllers

* Move CCVars and other stuff swept is beautiful

* Cleanup a bunch of controllers

* Fix shooting and high pressure movement controller

* Flashing improvements

* Stuff and things

* Combat collisions

* Combat mode collisions

* Pulling distance joint again

* Cleanup physics interfaces

* More like scuffedularity

* Shit's fucked

* Haha tests go green

* Bigmoneycrab

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

Content.Server/GameObjects/Components/Items/Storage/EntityStorageComponent.cs

@@ -17,6 +17,7 @@ using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Maths;
+using Robust.Shared.Physics;
 using Robust.Shared.Serialization;
 using Robust.Shared.Timing;
 using Robust.Shared.ViewVariables;
@@ -226,7 +227,7 @@ namespace Content.Server.GameObjects.Components.Items.Storage
 
         private void ModifyComponents()
         {
-            if (!_isCollidableWhenOpen && Owner.TryGetComponent<IPhysicsComponent>(out var physics))
+            if (!_isCollidableWhenOpen && Owner.TryGetComponent<IPhysBody>(out var physics))
             {
                 if (Open)
                 {
@@ -252,10 +253,10 @@ namespace Content.Server.GameObjects.Components.Items.Storage
         protected virtual bool AddToContents(IEntity entity)
         {
             if (entity == Owner) return false;
-            if (entity.TryGetComponent(out IPhysicsComponent? entityPhysicsComponent))
+            if (entity.TryGetComponent(out IPhysBody? entityPhysicsComponent))
             {
-                if(MaxSize < entityPhysicsComponent.WorldAABB.Size.X
-                    || MaxSize < entityPhysicsComponent.WorldAABB.Size.Y)
+                if(MaxSize < entityPhysicsComponent.GetWorldAABB().Size.X
+                    || MaxSize < entityPhysicsComponent.GetWorldAABB().Size.Y)
                 {
                     return false;
                 }
@@ -285,7 +286,7 @@ namespace Content.Server.GameObjects.Components.Items.Storage
                 if(Contents.Remove(contained))
                 {
                     contained.Transform.WorldPosition = ContentsDumpPosition();
-                    if (contained.TryGetComponent<IPhysicsComponent>(out var physics))
+                    if (contained.TryGetComponent<IPhysBody>(out var physics))
                     {
                         physics.CanCollide = true;
                     }

Content.Server/GameObjects/Components/Items/Storage/ItemComponent.cs

@@ -1,6 +1,5 @@
 using Content.Server.GameObjects.Components.GUI;
 using Content.Server.Interfaces.GameObjects.Components.Items;
-using Content.Server.Throw;
 using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components.Items;
 using Content.Shared.GameObjects.Components.Storage;
@@ -14,6 +13,7 @@ using Robust.Shared.Containers;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Localization;
 using Robust.Shared.Players;
+using Robust.Shared.Physics;
 using Robust.Shared.Serialization;
 
 namespace Content.Server.GameObjects.Components.Items.Storage
@@ -87,8 +87,8 @@ namespace Content.Server.GameObjects.Components.Items.Storage
                 return false;
             }
 
-            if (Owner.TryGetComponent(out IPhysicsComponent physics) &&
-                physics.Anchored)
+            if (Owner.TryGetComponent(out IPhysBody physics) &&
+                physics.BodyType == BodyType.Static)
             {
                 return false;
             }
@@ -141,22 +141,22 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             var targetLocation = eventArgs.Target.Transform.Coordinates;
             var dirVec = (targetLocation.ToMapPos(Owner.EntityManager) - sourceLocation.ToMapPos(Owner.EntityManager)).Normalized;
 
-            var throwForce = 1.0f;
+            float throwForce;
 
             switch (eventArgs.Severity)
             {
                 case ExplosionSeverity.Destruction:
-                    throwForce = 3.0f;
+                    throwForce = 30.0f;
                     break;
                 case ExplosionSeverity.Heavy:
-                    throwForce = 2.0f;
+                    throwForce = 20.0f;
                     break;
-                case ExplosionSeverity.Light:
-                    throwForce = 1.0f;
+                default:
+                    throwForce = 10.0f;
                     break;
             }
 
-            Owner.Throw(throwForce, targetLocation, sourceLocation, true);
+            Owner.TryThrow(dirVec * throwForce);
         }
     }
 }

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

@@ -0,0 +1,49 @@
+#nullable enable
+using Content.Server.GameObjects.Components.Items.Storage;
+using Content.Server.GameObjects.EntitySystems.Click;
+using Content.Shared.GameObjects.Components.Mobs.State;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+
+namespace Content.Server.GameObjects.Components.Items
+{
+    internal static class ThrowHelper
+    {
+        /// <summary>
+        ///     Tries to throw the entity if it has a physics component, otherwise does nothing.
+        /// </summary>
+        /// <param name="entity"></param>
+        /// <param name="direction">Will use the vector's magnitude as the strength of the impulse</param>
+        internal static void TryThrow(this IEntity entity, Vector2 direction, IEntity? user = null)
+        {
+            if (direction == Vector2.Zero || !entity.TryGetComponent(out PhysicsComponent? physicsComponent))
+            {
+                return;
+            }
+
+            if (physicsComponent.BodyType == BodyType.Static)
+            {
+                Logger.Warning("Tried to throw entity {entity} but can't throw static bodies!");
+                return;
+            }
+
+            if (entity.HasComponent<IMobStateComponent>())
+            {
+                Logger.Warning("Throwing not supported for mobs!");
+                return;
+            }
+
+            if (entity.HasComponent<ItemComponent>())
+            {
+                entity.EnsureComponent<ThrownItemComponent>().Thrower = user;
+
+                if (user != null)
+                    EntitySystem.Get<InteractionSystem>().ThrownInteraction(user, entity);
+            }
+
+            physicsComponent.ApplyLinearImpulse(direction);
+        }
+    }
+}

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

@@ -0,0 +1,33 @@
+#nullable enable
+using Content.Server.GameObjects.EntitySystems.Click;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Physics;
+
+namespace Content.Server.GameObjects.Components.Items
+{
+    [RegisterComponent]
+    public class ThrownItemComponent : Component, ICollideBehavior
+    {
+        public override string Name => "ThrownItem";
+
+        public IEntity? Thrower { get; set; }
+
+        public override void HandleMessage(ComponentMessage message, IComponent? component)
+        {
+            base.HandleMessage(message, component);
+            switch (message)
+            {
+                case PhysicsSleepCompMessage:
+                    EntitySystem.Get<InteractionSystem>().LandInteraction(Thrower, Owner, Owner.Transform.Coordinates);
+                    IoCManager.Resolve<IComponentManager>().RemoveComponent(Owner.Uid, this);
+                    break;
+            }
+        }
+
+        public void CollideWith(IPhysBody ourBody, IPhysBody otherBody)
+        {
+            EntitySystem.Get<InteractionSystem>().ThrowCollideInteraction(Thrower, ourBody, otherBody);
+        }
+    }
+}