Spawning an object attached to one object, drawn to another.

Here is a bit of example code. To test it

• Start a new scene

• Create a Quad and set the x scale to the width of the line you want.

• Attach the script below to the Quad

• Crate two game object that are no more that 'breakDistance' apart (default 5 units).

• Drag and drop the two game objects onto the 'start' and 'end' variables.

• Run the app and hit the space bar to connect the line.

• Move one of the game objects so they are more than 'breakDistance' apart to break the line.

  ---

  using UnityEngine; using System.Collections;

  public class LinePulse : MonoBehaviour { public float pulseTime = 1.0f; public float breakDistance = 5.0f; public Transform start; public Transform end;

     private bool pulsing = false;;
   
       void Start() {
           renderer.enabled = false;
       }
   
       void Update () {
           if (Input.GetKeyDown(KeyCode.Space)) {
               StartCoroutine(Pulse(pulseTime));
           }
       }
   
       IEnumerator Pulse(float time) {
           if (pulsing) yield break;
           pulsing = true;
           renderer.enabled = true;
           Vector3 scale = transform.localScale;
           bool broken = false;
   
           float timer = 0.0f;
           while (timer <= 1.0f) {
               Vector3 dir = end.position - start.position;
               float dist = dir.magnitude;
               transform.rotation = Quaternion.FromToRotation (Vector3.up, dir);
               float yScale = Mathf.PingPong(timer * 2.0f, 1.0f);
               scale.y = yScale * dist;
               transform.localScale = scale;
               transform.position = Vector3.Lerp (start.position, end.position, timer);
   
               if (!broken && timer > 0.5f && dist > breakDistance)
                   broken = true;
   
               if (timer < 0.5 || broken)
                   timer += Time.deltaTime / time;
               yield return null;
           }
           pulsing = false;
           renderer.enabled = false;
       }
   }
  
  
  

For your app, you'll likely have to set things up a bit differently, but this gives you some sample code that solves the line connecting and breaking.