Polymorph Artifact Effect (#20660)

Co-authored-by: Nemanja <98561806+EmoGarbage404@users.noreply.github.com>

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

@@ -0,0 +1,30 @@
+using Robust.Shared.Audio;
+using Content.Shared.Polymorph;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Xenoarchaeology.XenoArtifacts.Effects.Components;
+
+/// <summary>
+/// Artifact polymorphs surrounding entities when triggered.
+/// </summary>
+[RegisterComponent]
+public sealed partial class PolyArtifactComponent : Component
+{
+    /// <summary>
+    /// The polymorph effect to trigger.
+    /// </summary>
+    [DataField]
+    public ProtoId<PolymorphPrototype> PolymorphPrototypeName = "ArtifactMonkey";
+
+    /// <summary>
+    /// range of the effect.
+    /// </summary>
+    [DataField]
+    public float Range = 2f;
+
+    /// <summary>
+    /// Sound to play on polymorph.
+    /// </summary>
+    [DataField]
+    public SoundSpecifier PolySound = new SoundPathSpecifier("/Audio/Weapons/Guns/Gunshots/Magic/staff_animation.ogg");
+}

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

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+using Content.Server.Xenoarchaeology.XenoArtifacts.Effects.Components;
+using Content.Server.Xenoarchaeology.XenoArtifacts.Events;
+using Content.Shared.Humanoid;
+using Content.Server.Polymorph.Systems;
+using Content.Shared.Mobs.Systems;
+using Content.Shared.Polymorph;
+
+namespace Content.Server.Xenoarchaeology.XenoArtifacts.Effects.Systems;
+
+public sealed class PolyArtifactSystem : EntitySystem
+{
+    [Dependency] private readonly EntityLookupSystem _lookup = default!;
+    [Dependency] private readonly MobStateSystem _mob = default!;
+    [Dependency] private readonly PolymorphSystem _poly = default!;
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
+
+    /// <summary>
+    /// On effect trigger polymorphs targets in range.
+    /// </summary>
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<PolyArtifactComponent, ArtifactActivatedEvent>(OnActivate);
+    }
+
+    /// <summary>
+    /// Provided target is alive and is not a zombie, polymorphs the target.
+    /// </summary>
+    private void OnActivate(EntityUid uid, PolyArtifactComponent component, ArtifactActivatedEvent args)
+    {
+        var xform = Transform(uid);
+        foreach (var comp in _lookup.GetComponentsInRange<HumanoidAppearanceComponent>(xform.Coordinates, component.Range))
+        {
+            var target = comp.Owner;
+            if (_mob.IsAlive(target))
+            {
+                _poly.PolymorphEntity(target, component.PolymorphPrototypeName);
+                _audio.PlayPvs(component.PolySound, uid);
+            }
+        }
+    }
+}