Xenoarchaeology artifacts (#6069)

Co-authored-by: Alexander Evgrashin <evgrashin.adl@gmail.com>

Content.Server/Xenoarchaeology/XenoArtifacts/RandomArtifactSpriteSystem.cs

@@ -0,0 +1,58 @@
+using System;
+using Content.Server.Xenoarchaeology.XenoArtifacts.Events;
+using Content.Shared.Xenoarchaeology.XenoArtifacts;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Random;
+using Robust.Shared.Timing;
+
+namespace Content.Server.Xenoarchaeology.XenoArtifacts;
+
+public class RandomArtifactSpriteSystem : EntitySystem
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly IGameTiming _time = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<RandomArtifactSpriteComponent, ComponentInit>(OnInit);
+        SubscribeLocalEvent<RandomArtifactSpriteComponent, ArtifactActivatedEvent>(OnActivated);
+    }
+
+    public override void Update(float frameTime)
+    {
+        base.Update(frameTime);
+        var query = EntityManager.EntityQuery<RandomArtifactSpriteComponent, AppearanceComponent>();
+        foreach (var (component, appearance) in query)
+        {
+            if (component.ActivationStart == null)
+                return;
+
+            var timeDif = _time.CurTime - component.ActivationStart.Value;
+            if (timeDif.Seconds >= component.ActivationTime)
+            {
+                appearance.SetData(SharedArtifactsVisuals.IsActivated, false);
+                component.ActivationStart = null;
+            }
+        }
+    }
+
+    private void OnInit(EntityUid uid, RandomArtifactSpriteComponent component, ComponentInit args)
+    {
+        if (!TryComp(uid, out AppearanceComponent? appearance))
+            return;
+
+        var randomSprite = _random.Next(component.MinSprite, component.MaxSprite + 1);
+        appearance.SetData(SharedArtifactsVisuals.SpriteIndex, randomSprite);
+    }
+
+    private void OnActivated(EntityUid uid, RandomArtifactSpriteComponent component, ArtifactActivatedEvent args)
+    {
+        if (!TryComp(uid, out AppearanceComponent? appearance))
+            return;
+
+        appearance.SetData(SharedArtifactsVisuals.IsActivated, true);
+        component.ActivationStart = _time.CurTime;
+    }
+}