While Instruction loop is executed once

Questions & Answers
1

HI
i am trying to make my snack walk forward while playing animation until it arrived to an game object.But every time my player enter in the trigger the snack x position increase once . this is my code

var Snack: GameObject;
var posFinal:Transform;
var posInitial:float;
var pasavance:float=5;
var isHere:boolean=false;
function Start()
{// save snack's first position
posInitial=Snack.transform.position.x;
}

function OnTriggerEnter( hit:Collider) 
{
    isHere=true;
}
function Update()
{
   if(isHere)
   {
Snack.animation.wrapMode = WrapMode.Loop;
do{
  // play animation walk
     Snack.animation.Play("Walk");
    // make snack move forward 
     Snack.transform.position.x+=pasavance;
           print(Snack.transform.position.x);
         }while(Snack.transform.position.x<posFinal.transform.position.x);
  isHere=false;
}

someone tell me what’s wrong please??

2

You have to remember that Update is called once per frame, but you are changing the Snack’s position multiple times in one frame until it is < posFinal. Only then do you return from Update and let Unity draw the frame. So you need to not even have a while loop inside Update. Just change your if to

if (IsHere && Snack.transform.position.x < posFinal.transform.postion.x)

Also, remove IsHere = false otherwise the next update won’t change the position either.