Added interaction, hand, rigidbody dragging, picking up hammer

Assets/Plugins/Interaction/Runtime/Rigidbody/RigidbodyInteractable.cs

@@ -0,0 +1,63 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Nothke.Interaction.Items
+{
+    public class RigidbodyInteractable : Interactable
+    {
+        public Rigidbody rb;
+        public bool rotateAroundPoint;
+
+        [System.NonSerialized]
+        public bool held;
+
+        private void Awake()
+        {
+            if (!rb)
+                rb = GetComponent<Rigidbody>();
+        }
+
+        public override void Use(InteractionController im)
+        {
+            base.Use(im);
+
+            DragRigidbody.e.Attach(im.hit, !rotateAroundPoint);
+            DragRigidbody.e.OnSlipped += Unhold;
+        }
+
+        public override void StartHold()
+        {
+            base.StartHold();
+            manager.FreezeDetection();
+
+            held = true;
+
+            OnStartedHold();
+        }
+
+        public override void EndHold()
+        {
+            base.EndHold();
+
+            if (!held)
+                return;
+
+            DragRigidbody.e.End();
+
+            Unhold();
+        }
+
+        void Unhold()
+        {
+            manager.UnfreezeDetection();
+            manager.LockFreeLook(false);
+            DragRigidbody.e.OnSlipped -= Unhold;
+            held = false;
+            OnEndedHold();
+        }
+
+        protected virtual void OnStartedHold() { }
+        protected virtual void OnEndedHold() { }
+    }
+}