unity3d - How to make an enemy stop when he enter the required distance to shoot -

the problem have when enemy enters range shoot stops , never follows player again if player gets out of shooting range. detect if player entered shooting range have made sphere collider enemy.

using unityengine; using system.collections;  public class enemywithriflemovement : monobehaviour {      private gameobject player;     private navmeshagent nav;     private bool playerinrange = false;     private rigidbody rb;      void awake()     {         rb = getcomponent<rigidbody>();         player = gameobject.findgameobjectwithtag("player").gameobject;         nav = getcomponent<navmeshagent>();     }      void update()     {         if(playerinrange)         {            nav.setdestination(transform.position);         }         else if(playerinrange == false)            nav.setdestination(player.transform.position);     }      void ontriggerenter(collider other)     {         if(other.gameobject.comparetag("player"))         {             playerinrange = true;         }     }      void ontriggetexit(collider other)     {         if(other.gameobject.comparetag("player"))         {             playerinrange = false;         }     } } 

your code looks fine, except there 1 typo. replace ontriggetexit ontriggerexit, , should work!

also, in opinion easier distance between enemy , player doing playerinrange = (vector3.distance(transform.position, player) <= range.