Goliath mob (#30839)

* Goliath mob

* Update asteroid.yml

* mcfuck yourself

* add cloak

* fixes

* Update materials.yml

Content.Server/NPC/Systems/NPCUseActionOnTargetSystem.cs

@@ -0,0 +1,68 @@
+using Content.Server.NPC.Components;
+using Content.Server.NPC.HTN;
+using Content.Shared.Actions;
+using Robust.Shared.Timing;
+
+namespace Content.Server.NPC.Systems;
+
+public sealed class NPCUseActionOnTargetSystem : EntitySystem
+{
+    [Dependency] private readonly IGameTiming _timing = default!;
+    [Dependency] private readonly SharedActionsSystem _actions = default!;
+
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<NPCUseActionOnTargetComponent, MapInitEvent>(OnMapInit);
+    }
+
+    private void OnMapInit(Entity<NPCUseActionOnTargetComponent> ent, ref MapInitEvent args)
+    {
+        ent.Comp.ActionEnt = _actions.AddAction(ent, ent.Comp.ActionId);
+    }
+
+    public bool TryUseTentacleAttack(Entity<NPCUseActionOnTargetComponent?> user, EntityUid target)
+    {
+        if (!Resolve(user, ref user.Comp, false))
+            return false;
+
+        if (!TryComp<EntityWorldTargetActionComponent>(user.Comp.ActionEnt, out var action))
+            return false;
+
+        if (!_actions.ValidAction(action))
+            return false;
+
+        if (action.Event != null)
+        {
+            action.Event.Performer = user;
+            action.Event.Action = user.Comp.ActionEnt.Value;
+            action.Event.Coords = Transform(target).Coordinates;
+        }
+
+        _actions.PerformAction(user,
+            null,
+            user.Comp.ActionEnt.Value,
+            action,
+            action.BaseEvent,
+            _timing.CurTime,
+            false);
+        return true;
+    }
+
+    public override void Update(float frameTime)
+    {
+        base.Update(frameTime);
+
+        // Tries to use the attack on the current target.
+        var query = EntityQueryEnumerator<NPCUseActionOnTargetComponent, HTNComponent>();
+        while (query.MoveNext(out var uid, out var comp, out var htn))
+        {
+            if (!htn.Blackboard.TryGetValue<EntityUid>(comp.TargetKey, out var target, EntityManager))
+                continue;
+
+            TryUseTentacleAttack((uid, comp), target);
+        }
+    }
+}