prevent dead zombie from sliding on floor

Assets/Scripts/ZombieController.cs

@@ -1,6 +1,7 @@
 using UnityEngine;
-
 [RequireComponent(typeof(Animator))]
+
+[RequireComponent(typeof(Rigidbody))]
 public class ZombieController : MonoBehaviour
 {
     private static readonly int DieHash = Animator.StringToHash("Die");
@@ -41,6 +42,7 @@ public class ZombieController : MonoBehaviour
     private void Update()
     {
         if (player == null) return;
+        if (currentHealth == 0) return;
 
         float distance = Vector3.Distance(transform.position, player.position);