anyway to ensure that A gameobject dose not choose to move to a position if it was occupied by another ?

Question

I'm using an Array of gameobject to designate points in the 3D world, and then i want an NPC gameobject to move to one of these points at random after reaching one of them, my problem is that I do not want the gameobject to choose one of these points as it finale destination if it was occupied by another point.

 public class EnamyShipAI : MonoBehaviour {
 
     public float moveSpeedforward;
 
     GameObject[] movePointone = new GameObject[3];
 
     // Use this for initialization
     void Start () {
 
       movePointOne = GameObject.FindGameObjectsWithTag("MovePoint");
      
     }
     
     //Update is called once per frame
     void Update () {
 
         transform.position = Vector3.MoveTowards(transform.position,
                                   movePointOne[0].transform.position,
                                   moveSpeedforward * Time.deltaTime);
 
     }
 }

I was thinking of before the moving gameObject, it will choose one point at random, mark it as occupied so other Instantiated objects cannot choose it, then move to it, a point dose not go back choosable till the occupied object has moved.

but i'm not sure where to start to coding that idea.

Answer 1

You could do an "occupied" idea.

In a separate script, you would just have 1 public variable called "occupied", essentially: public bool occupied;

Then, for example reasons, lets say you had called that script "PointChecker", so in your main script here, in update, you would do something like: //create a temp variable to store a random number based on the size of the "point" array int loc = Random.Range(0, movePointone.Length - 1);

 //Check if occupied
 if(movePointone[loc].GetComponent<PointChecker>().occupied == false){
 //move to location
 transform.position = Vector3.MoveTowards(transform.position,
                                    movePointOne[loc].transform.position,
                                    moveSpeedforward * Time.deltaTime);
 //Set this spot to "occupied"
 movePointone[loc].GetComponent<PointChecker>().occupied == true
 }

(C#, untested code)

Another way you could do it is checking if that spot has a child, so it would be something like: //create a temp variable to store a random number based on the size of the "point" array int loc = Random.Range(0, movePointone.Length - 1);

     //Check if occupied by parents, children
     if(movePointone[loc].transform.childCount == 0){
     //move to location
     transform.position = Vector3.MoveTowards(transform.position,
                                        movePointOne[loc].transform.position,
                                        moveSpeedforward * Time.deltaTime);
     //Set this spot to "occupied"
     transform.parent = movePointone[loc].transform;
     }

(C#, untested code)

anyway to ensure that A gameobject dose not choose to move to a position if it was occupied by another ?

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