How do you get different random numbers for each object array?

Question

 public Transform[] obstacleLocation;
 public GameObject[] obstacles;

 int obstacleRandomNumber;

 void Awake()
 {
     obstacleRandomNumber = Random.Range (0, obstacles.Length);

     SpawnObstacles ();
 }

 void SpawnObstacles()
 {
     foreach (Transform obstacleLoc in obstacleLocation) {
         Instantiate (obstacles [obstacleRandomNumber], obstacleLoc.position, 
             obstacleLoc.rotation);

         print ("Obstacle");
     }
 }

The problem is obstacleRandomNumber uses the same number for all the Transforms in the array. How do I do it so that the random number uses a different number for every Transform in the array?

Answer 1

Best Answer

Answer by Yeezyy · Dec 08, 2017 at 11:13 AM

void SpawnObstacles() {
foreach (Transform obstacleLoc in obstacleLocation) {
obstacleRandomNumber = Random.Range (0, obstacles.Length -1);
Instantiate (obstacles [obstacleRandomNumber], obstacleLoc.position,
obstacleLoc.rotation);
print ("Obstacle"); } }

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Igorotak · Dec 08, 2017 at 11:27 AM 0

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I had to remove the - 1 but other than that, it actually worked perfectly. It makes me feel stupid how I missed this simple solution.

Yeezyy Igorotak · Dec 08, 2017 at 11:35 AM 0

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An array of length n size , the last index is n-1 as an array index starts with 0. If obstacleRandomNumber is random as obstacles.Length you will get an array index out of range error

Igorotak Yeezyy · Dec 08, 2017 at 11:37 AM 0

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$$anonymous$$e didnt get any errors. when I added the -1 some of the transforms were empty but after removing it all of them were filled with one of the two objects that i wanted

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How do you get different random numbers for each object array?

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