Simple Magic Spellbook System (#7823)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Physics/SharedPreventCollideSystem.cs

@@ -0,0 +1,38 @@
+using Robust.Shared.GameStates;
+using Robust.Shared.Physics.Dynamics;
+
+namespace Content.Shared.Physics;
+
+public sealed class SharedPreventCollideSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<PreventCollideComponent, ComponentGetState>(OnGetState);
+        SubscribeLocalEvent<PreventCollideComponent, ComponentHandleState>(OnHandleState);
+        SubscribeLocalEvent<PreventCollideComponent, PreventCollideEvent>(OnPreventCollide);
+    }
+
+    private void OnGetState(EntityUid uid, PreventCollideComponent component, ref ComponentGetState args)
+    {
+        args.State = new PreventCollideComponentState(component);
+    }
+
+    private void OnHandleState(EntityUid uid, PreventCollideComponent component, ref ComponentHandleState args)
+    {
+        if (args.Current is not PreventCollideComponentState state)
+            return;
+
+        component.Uid = state.Uid;
+    }
+
+    private void OnPreventCollide(EntityUid uid, PreventCollideComponent component, PreventCollideEvent args)
+    {
+        var otherUid = args.BodyB.Owner;
+
+        if (component.Uid == otherUid)
+            args.Cancel();
+    }
+
+}