Remove some functions from HandsComponent (#4937)

* remove wrapper functions

* Remove InteractionSystem wrapper functions

* remove two more functions

* add missing `using`

* clean diff

Content.Shared/Timing/UseDelayComponent.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Threading;
+using Content.Shared.Cooldown;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.Timing;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Shared.Timing
+{
+    /// <summary>
+    /// Timer that creates a cooldown each time an object is activated/used
+    /// </summary>
+    [RegisterComponent]
+    public class UseDelayComponent : Component
+    {
+        public override string Name => "UseDelay";
+
+        private TimeSpan _lastUseTime;
+
+        [DataField("delay")]
+        private float _delay = 1;
+        /// <summary>
+        /// The time, in seconds, between an object's use and when it can be used again
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        public float Delay { get => _delay; set => _delay = value; }
+
+        public bool ActiveDelay{ get; private set; }
+
+        private CancellationTokenSource? cancellationTokenSource;
+
+        public void BeginDelay()
+        {
+            if (ActiveDelay)
+            {
+                return;
+            }
+
+            ActiveDelay = true;
+
+            cancellationTokenSource = new CancellationTokenSource();
+
+            Owner.SpawnTimer(TimeSpan.FromSeconds(Delay), () => ActiveDelay = false, cancellationTokenSource.Token);
+
+            _lastUseTime = IoCManager.Resolve<IGameTiming>().CurTime;
+
+            if (Owner.TryGetComponent(out ItemCooldownComponent? cooldown))
+            {
+                cooldown.CooldownStart = _lastUseTime;
+                cooldown.CooldownEnd = _lastUseTime + TimeSpan.FromSeconds(Delay);
+            }
+
+        }
+
+        public void Cancel()
+        {
+            cancellationTokenSource?.Cancel();
+            ActiveDelay = false;
+
+            if (Owner.TryGetComponent(out ItemCooldownComponent? cooldown))
+            {
+                cooldown.CooldownEnd = IoCManager.Resolve<IGameTiming>().CurTime;
+            }
+        }
+
+        public void Restart()
+        {
+            cancellationTokenSource?.Cancel();
+            ActiveDelay = false;
+            BeginDelay();
+        }
+    }
+}