Add damage system and processing system to enemy

Assets/Scripts/Events/OnHitEvent.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+using static OnHitEvent;
+
+[System.Serializable]
+public class OnHitEvent : UnityEvent<Args>
+{
+    public class Args
+    {
+        public float hitMultiplier;
+        public Damage damage;
+        public GameObject source;
+
+
+        public Args(Damage damage, float hitMultiplier, GameObject source)
+        {
+            this.damage = damage;
+            this.hitMultiplier = hitMultiplier;
+            this.source = source;
+        }
+    }
+}