Update

Assets/Invector-3rdPersonController/Basic Locomotion/Scripts/Generic/Health/vIDamageReceiver.cs

@@ -0,0 +1,67 @@
+using UnityEngine;
+
+namespace Invector
+{
+    [System.Serializable]
+    public class OnReceiveDamage : UnityEngine.Events.UnityEvent<vDamage> { }
+    public interface vIDamageReceiver
+    {
+        OnReceiveDamage onStartReceiveDamage { get; }
+        OnReceiveDamage onReceiveDamage { get; }
+        Transform transform { get; }
+        GameObject gameObject { get; }
+        void TakeDamage(vDamage damage);
+    }
+    
+    public static class vDamageHelper
+    {
+        /// <summary>
+        /// Apply damage to gameObject if <see cref="CanReceiveDamage(GameObject)"/>
+        /// </summary>
+        /// <param name="receiver"></param>
+        /// <param name="damage"></param>
+        public static void ApplyDamage(this GameObject receiver, vDamage damage)
+        {
+            var receivers = receiver.GetComponents<vIDamageReceiver>();
+            if (receivers != null)
+                for (int i = 0; i < receivers.Length; i++)
+                    receivers[i].TakeDamage(damage);
+        }
+
+        /// <summary>
+        /// check if gameObject can receive the damage
+        /// </summary>
+        /// <param name="receiver"></param>
+        /// <returns>return true if gameObject contains a <see cref="vIDamageReceiver"/></returns>
+        public static bool CanReceiveDamage(this GameObject receiver)
+        {
+            return receiver.GetComponent<vIDamageReceiver>() != null;
+        }
+
+        /// <summary>
+        /// Get Angle between transform position and hit point
+        /// </summary>
+        /// <param name="transform"></param>
+        /// <param name="hitpoint"></param>
+        /// <param name="normalized"></param>
+        /// <returns></returns>
+        public static float HitAngle(this Transform transform, Vector3 hitpoint, bool normalized = true)
+        {
+            var localTarget = transform.InverseTransformPoint(hitpoint);
+            var _angle = (int)(Mathf.Atan2(localTarget.x, localTarget.z) * Mathf.Rad2Deg);
+
+            if (!normalized) return _angle;
+
+            if (_angle <= 45 && _angle >= -45)
+                _angle = 0;
+            else if (_angle > 45 && _angle < 135)
+                _angle = 90;
+            else if (_angle >= 135 || _angle <= -135)
+                _angle = 180;
+            else if (_angle < -45 && _angle > -135)
+                _angle = -90;
+
+            return _angle;
+        }
+    }
+}