Add utility AI (#806)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>
Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>
Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

Content.Server/AI/Utility/Actions/Idle/CloseLastEntityStorage.cs

@@ -0,0 +1,42 @@
+using System.Collections.Generic;
+using Content.Server.AI.Operators;
+using Content.Server.AI.Operators.Inventory;
+using Content.Server.AI.Operators.Movement;
+using Content.Server.AI.Utility.Considerations;
+using Content.Server.AI.Utility.Considerations.Movement;
+using Content.Server.AI.Utility.Considerations.State;
+using Content.Server.AI.Utility.Curves;
+using Content.Server.AI.WorldState;
+using Content.Server.AI.WorldState.States.Inventory;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Server.AI.Utility.Actions.Idle
+{
+    /// <summary>
+    /// If we just picked up a bunch of stuff and have time then close it
+    /// </summary>
+    public sealed class CloseLastEntityStorage : UtilityAction
+    {
+        public override float Bonus => 1.5f;
+        
+        public CloseLastEntityStorage(IEntity owner) : base(owner) {}
+
+        protected override Consideration[] Considerations => new Consideration[]
+        {
+            new StoredStateIsNullCon<LastOpenedStorageState, IEntity>(
+                new InverseBoolCurve()),
+            new DistanceCon(
+                new QuadraticCurve(1.0f, 1.0f, 0.02f, 0.0f)),
+        };
+        public override void SetupOperators(Blackboard context)
+        {
+            var lastStorage = context.GetState<LastOpenedStorageState>().GetValue();
+            
+            ActionOperators = new Queue<AiOperator>(new AiOperator[]
+            {
+                new MoveToEntityOperator(Owner, lastStorage),
+                new CloseLastStorageOperator(Owner), 
+            });
+        }
+    }
+}