More artifact effects (#13300)

Content.Server/Xenoarchaeology/XenoArtifacts/Effects/Components/ClearFixturesArtifactComponent.cs

@@ -0,0 +1,10 @@
+namespace Content.Server.Xenoarchaeology.XenoArtifacts.Effects.Components;
+
+/// <summary>
+///     Removes the masks/layers of hard fixtures from the artifact when added, allowing it to pass through walls
+///     and such.
+/// </summary>
+[RegisterComponent]
+public sealed class ClearFixturesArtifactComponent : Component
+{
+}

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

@@ -0,0 +1,36 @@
+using Content.Server.Xenoarchaeology.XenoArtifacts.Effects.Components;
+using Content.Server.Xenoarchaeology.XenoArtifacts.Events;
+using Content.Shared.Physics;
+using Robust.Shared.Physics;
+using Robust.Shared.Physics.Dynamics;
+
+namespace Content.Server.Xenoarchaeology.XenoArtifacts.Effects.Systems;
+
+/// <summary>
+///     Handles allowing activated artifacts to phase through walls.
+/// </summary>
+public sealed class ClearFixturesArtifactSystem : EntitySystem
+{
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ClearFixturesArtifactComponent, ArtifactActivatedEvent>(OnActivate);
+    }
+
+    private void OnActivate(EntityUid uid, ClearFixturesArtifactComponent component, ArtifactActivatedEvent args)
+    {
+        if (!TryComp<FixturesComponent>(uid, out var fixtures))
+            return;
+
+        foreach (var (_, fixture) in fixtures.Fixtures)
+        {
+            if (!fixture.Hard)
+                continue;
+
+            fixture.CollisionLayer = (int) CollisionGroup.None;
+            fixture.CollisionMask = (int) CollisionGroup.None;
+        }
+    }
+}