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Question by evengerX · Jun 29, 2012 at 02:30 PM · collisionarrayrandomdifferenttargets

Semi-Controlled Array Randomization

Essentially, what this javascript does is choose a random Transform from an array and moves the camera towards the transform. Then, when the camera collides with one of the Transforms, it randomly chooses a new one and moves towards it. Rinse and Repeat.

However, i am coming across an issue where the random generator will choose the new target to be the same as the old target, which causes the loop to quit itself. What do I need to do to make the old and new targets to be different each time?

 //Array of Possible Camera Target Locations and Current Target
 var movTargets : Transform[] = new Transform[6];

 var currentTarget : Transform;


function OnTriggerEnter (Collider) {

PickRandomTarget();

}

function Update () {

transform.LookAt(target);

MoveToTarget();

}

function PickRandomTarget () {

// set currentTarget to a new target from the movTargets[] array

 currentTarget = movTargets[Random.Range(0, movTargets.Length)];
 
 Debug.Log(currentTarget);

}

function MoveToTarget () {

//Automatically Moves Camera to currentTarget

 transform.position = Vector3.MoveTowards(transform.position, currentTarget.position, speed * Time.deltaTime);
 

}

I am very inexperienced with javascript (and programming languages in general), so any help provided will be greatly appreciated.

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Answer by whydoidoit · Jun 29, 2012 at 02:33 PM

try this:

 function PickRandomTarget () {
 
 // set currentTarget to a new target from the movTargets[] array

     var newTarget : Transform;
     do
     {
        newTarget = movTargets[Random.Range(0, movTargets.Length)];
      } while((newTarget.position - currentTarget.position).sqlMagnitude < 1);
      currentTarget = newTarget;
 
    Debug.Log(currentTarget);
    }
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