enemy need to stop and shoot while walking on waypoint

I made a tower defence game, eveyrhting works perfect. The enemies are following waypoints, using hotween.

I want to make some enemies to attack towers, instead of just pass away. For this; i need a break while they follow waypoints, a code for detection of towers. I see that in the tower scripts, towers use bool void check range. How can i implement same system on enemies? This is the enemy waypoint script(not complete, but i guess this is the important part);

  IEnumerator OnSpawn()
     {
         //wait one frame so Start() gets called before OnSpawn() on a new instantiation
         //(we need to set "myID" before calling it below)
         yield return new WaitForEndOfFrame();
 
         //get Vector3 array with waypoint positions
         waypoints = pathContainer.waypoints;
 
         //get waypoint array of Vector3
         InitWaypoints();
 
         //start movement
         StartMove();
 }
 
 //initialize waypoint positions
     internal void InitWaypoints()
     {
         //recreate array used for waypoint positions
         wpPos = new Vector3[waypoints.Length];
         //fill array with original positions and add custom height
         for (int i = 0; i < wpPos.Length; i++)
         {
             wpPos[i] = waypoints[i].position + new Vector3(0, sizeToAdd, 0);
         }
     }
 
 
     //starts movement
     public void StartMove()
     {
         //we set this gameobject position directly to the first waypoint and
         //we also add a defined size to our object height,
         //so our gameobject could "stand" on top of the path.
         transform.position = wpPos[0];
         //we're now at the first waypoint position,
         //so directly call the next waypoint
         CreateTween();
     }
 
 
     //creates a new HOTween tween which moves us to the next waypoint
     //(defined by passed arguments)
     internal void CreateTween()
     {
         //prepare HOTween's parameters, you can look them up here
         //http://www.holoville.com/hotween/documentation.html
         ////////////////////////////////////////////////////////////
 
         //create new HOTween plugin for curved paths
         //pass in array of Vector3 waypoint positions, relative = true
         plugPath = new PlugVector3Path(wpPos, true, pathtype);
 
         //orients the tween target along the path
         //constrains this game object on one axis
         if (orientToPath)
             plugPath.OrientToPath();
 
         //create TweenParms for storing HOTween's parameters
         tParms = new TweenParms();
         //sets the path plugin as tween position property
         tParms.Prop("position", plugPath);
         tParms.AutoKill(true);
         //use speed based tween with linear easing
         tParms.SpeedBased();
         tParms.Ease(EaseType.Linear);
         tParms.OnComplete(OnPathComplete);
 
         //create a new tween, move this gameobject with given arguments
         tween = HOTween.To(transform, maxSpeed, tParms);
     }
 

Should i add public void? Or if state?

If they found a tower, they must stop and attack. There are many attacking script examples, this part is ok. But If tower hitpoint become zero/ they need to continue, but i dont how can i do this.

Thank you for your help.