FindClosestEnemy() change target?

Question

Hi, i'm using the function I found in Unity Script Reference, about FindGameObjectWithTag.

Then I must be able to change between the targets tagged as "Enemy". How would i do in t$$anonymous$$s code?:

function FindClosestEnemy () : GameObject {

var gos : GameObject[]; gos = GameObject.FindGameObjectsWithTag("Enemy"); var closest : GameObject; var distance = Mathf.Infinity; var position = transform.position;

for (var go : GameObject in gos) { var diff = (go.transform.position - position); var curDistance = diff.sqrMagnitude; if (curDistance < distance) { closest = go; distance = curDistance; } if (Input.GetButton("Jump")) { //What would i do here??? how? } } return closest;

}

The problem is that it is an array, and doesn't looks like an array, so then i don't know how to increment "gos[THIS]"....

Thank you so much! :D

Answer 1

Answer by skovacs1 · Aug 18, 2010 at 06:37 PM

Your question made sense right up until the end. It is an array and looks like one just fine. You can't increment a gameobject and you already are iterating through the array if that's what you were trying to convey.

What you've got there is a foreach loop. It iterates through every element in the array. it is essentially equivalent to

for (var i = 0; i < gos.length ; i++)
{
    var go = gos[i];
    if(go)
    {
        //...the contents of your foreach loop
    }
}

Your calculation of the closest enemy is fine except for the last if statement. Why are you trying to do somet$$anonymous$$ng when you jump for every loop iteration? The if statement should not be inside your function at all let alone t$$anonymous$$s loop.

I t$$anonymous$$nk you want somet$$anonymous$$ng like:

function FindClosestEnemy () : GameObject { var gos : GameObject[] = GameObject.FindGameObjectsWithTag("Enemy"); var closest : GameObject; var distance = Mathf.Infinity; var position = transform.position;

 for (var go : GameObject in gos) { 
     if((go.transform.position - position).sqrMagnitude &lt; distance) { 
         closest = go; 
         distance = curDistance; 
     } 
 }
 return closest;

function Update()
{
    var target : GameObject = FindClosestEnemy();
    if (Input.GetButton("Jump")) {
        //Do whatever you want here.
    }

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Henrique · Aug 18, 2010 at 06:52 PM 0

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"Jump" is only for test. It is a test project in Unity. My question is how would i use the button "Jump" to change between the enemies...from nearest to far enemies.... I want only change the target... How?

Thx :D

skovacs1 · Aug 24, 2010 at 06:45 AM 0

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I never asked about "Jump" or whether it is a test - that has no bearing on anything. I don't see where you are having difficulty with the answer. There is a function to find the closest enemy right here that will work for you and if you want to do that when they push jump, then do so - it's not hard: function Update(){if (Input.GetButton("Jump")) target = FindClosestEnemy();} If you don't want to find the closest enemy, then don't ask about FindClosestEnemy(). If you want to simply find the next-closest-target, then I would ask that you revise your question to ask that.

FindClosestEnemy() change target?

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