navmeshagent causes Ragdoll to float upon activation

I've been having problems implementing a Navmeshagent to an enemy character in my game that turns into a Ragdoll upon death. When I kill the enemy, its Ragdoll floats in the air. Help would be greatly appreciated.

The script:

Code (csharp):

1.  
2. using System;
3. using System.Collections;
4. using System.Collections.Generic;
5. using UnityEngine;
6. using UnityEngine.AI;
7.  
8. public class NewZombieScript : MonoBehaviour
9. {
10.     public float ZombieSpeed = 8;
11.     public float ZombieRotationSpeed = 5;
12.     public float MaxDistzombie = 32.1f; // if larger than this, don't chase, otherwise, chase if lower than this and higher than MinDistzombie
13.     public float MinDistzombie = 3; // if larger than this and smaller than MaxDistzombie, chase player
14.     public Transform target;
15.     private bool chasing;
16.     private bool Alive;
17.     public Rigidbody rb;
18.     public float PlayerDistance;
19.    
20.  
21.     public int MaxZombieHP = 50;
22.     public int CurrentZombieHP;
23.     public HealthBar ZombieHealthBar;
24.     public Animator ZombieAnimator;
25.  
26.  
27.     public NavMeshAgent agent;
28.  
29.     private float attackTime; //time since last attack
30.     public const float attackRate = 1f; // attack cooldown
31.  
32.     private void Awake()
33.     {
34.         chasing = false;
35.         Alive = true;
36.     }
37.  
38.     public void Damage(int ZombieDamage)
39.     {
40.         CurrentZombieHP -= ZombieDamage;
41.         ZombieHealthBar.SetHealth(CurrentZombieHP);
42.     }
43.  
44.  
45.     // Start is called before the first frame update
46.     void Start()
47.     {      
48.         Alive = true;
49.         CurrentZombieHP = MaxZombieHP;
50.         ZombieAnimator = GetComponentInChildren<Animator>();
51.         ZombieAnimator.enabled = true;
52.         ZombieRigidbody(true);
53.         rb = GetComponent<Rigidbody>();
54.         NavMeshAgent agent = GetComponent<NavMeshAgent>();
55.     }
56.  
57.     // Update is called once per frame
58.     void Update()
59.     {
60.  
61.         PlayerDistance = Vector3.Distance(target.position, transform.position);
62.        
63.        
64.         if (Alive == true)
65.         {
66.  
67.  
68.             if (PlayerDistance <= MaxDistzombie)
69.             {
70.                
71.        
72.                 if (PlayerDistance > MinDistzombie)
73.                 {
74.                     GoToTarget();
75.                     ZombieSpeed = 4f;
76.                     chasing = true;
77.                     Debug.Log("Chasing");
78.                 }
79.             }
80.             if (PlayerDistance < MinDistzombie)
81.             {
82.                 StopZombie();
83.                 ZombieAttack();
84.             }
85.         }
86.        
87.    
88.  
89.  
90.         if (attackTime > 0)
91.         {
92.             attackTime -= Time.deltaTime;
93.         }
94.  
95.  
96.  
97.  
98.         void GoToTarget()
99.         {
100.             if (Alive == true)
101.             {
102.                 if (PlayerDistance > MinDistzombie)
103.                 {
104.                     ZombieSpeed = 4f;
105.                     chasing = true;
106.                     Debug.Log("Chasing");
107.                 }
108.             }          
109.         }
110.  
111.         if (CurrentZombieHP <= 0)
112.         {
113.             Die();
114.         }
115.  
116.  
117.  
118.  
119.         if (chasing)
120.         {
121.             //rotate to look at the player
122.              
123.             if (Alive == true)
124.             {
125.                 //move towards the player
126.  
127.                 FaceTarget();
128.                 agent.SetDestination(target.position);
129.                 ZombieAnimator.SetFloat("Speed", agent.velocity.magnitude);
130.  
131.                 Debug.Log("MovingToPlayer");
132.  
133.                 if (PlayerDistance > MaxDistzombie)
134.                     chasing = false;
135.  
136.                 //give up when out of range
137.             }
138.  
139.             if (Alive == false)
140.             {
141.                 chasing = false;
142.             }
143.  
144.  
145.         }
146.  
147.  
148.  
149.         else
150.         {
151.             //not currently chasing
152.  
153.             //start chasing when player is close enough
154.  
155.         }
156.  
157.  
158.         void StopZombie()
159.         {
160.             chasing = false;
161.             ZombieSpeed = 1;
162.             Debug.Log("StoppedMoving");
163.         }
164.  
165.         void FaceTarget ()
166.         {
167.             Vector3 direction = (target.position - transform.position).normalized;
168.             Quaternion lookRotation = Quaternion.LookRotation(new Vector3(direction.x, 0, direction.z));
169.             transform.rotation = Quaternion.Slerp(transform.rotation, lookRotation, Time.deltaTime * 5f);
170.         }
171.        
172.  
173.         void ZombieAttack()
174.         {
175.             if (attackTime <= 0)
176.             {
177.                 attackTime = attackRate;
178.                 target.GetComponent<PlayerHealth>().TakeDamage(8);
179.                 Debug.Log("AttackingPlayer");
180.             }
181.  
182.         }
183.     }
184.  
185.     void Die()
186.     {
187.         GetComponent<Animator>().enabled = false;
188.         ZombieRigidbody(false);
189.         ZombieCollider(true);
190.         Alive = false;
191.         ZombieHealthBar.gameObject.SetActive(false);
192.  
193.  
194.     }
195.  
196.     private void ZombieCollider(bool state)
197.     {
198.         Collider[] colliders = GetComponentsInChildren<Collider>();
199.  
200.         foreach (Collider collider in colliders)
201.         {
202.             collider.enabled = state;
203.         }
204.  
205.         GetComponent<Collider>().enabled = !state;
206.     }
207.  
208.     private void ZombieRigidbody(bool state)
209.     {
210.         Rigidbody[] rigidbodies = GetComponentsInChildren<Rigidbody>();
211.  
212.         foreach (Rigidbody rigidbody in rigidbodies)
213.         {
214.             rigidbody.isKinematic = state;
215.         }
216.  
217.         GetComponent<Rigidbody>().isKinematic = state;
218.  
219.     }
220.  
221.     void OnDrawGizmosSelected()
222.     {
223.         Gizmos.color = Color.red;
224.         Gizmos.DrawWireSphere(transform.position, MaxDistzombie);
225.  
226.         Gizmos.color = Color.blue;
227.         Gizmos.DrawWireSphere(transform.position, MinDistzombie);
228.     }
229.  
230. }
231.  
232.  

 

Disable the navmesh agent on death as well?

 

i tried that. Gravity worked, but the zombie object started to float away from the zombie's model (the zombie's model is a child of the gameobject that has the script, navmeshagent and rigidbody in it)