accessing child objects with tag

Scripting
1

Hi folks.

How do you access child objects with a tag?
Suppose we have a car (the parent) consisting of children–a car body, tire01, tire02, tire03, tire04.
The tires are all tagged “tire” and a script named “tire control” is attached to them. I want to assign a same value to these tires. I tried the following code but it didn’t work.

var tires : GameObject[] = GameObject.FindGameObjectsWithTag("tire");
for(var aTire : GameObject in tires)
{
  aTire.GetComponent("tire control").punctured = true;
}

It seems me that GameObject.FindGameObjectsWithTag() function doesn’t work for child objects. Am I correct, and what is the right way to access them?

Thanx.

2

There are a few ways to get to the children. But you could also trigger them with a static var.(ie)

//main scipt
static var mainScript : boolean;
//tire script
if(mainScriptName.mianScript==true){
//myTires are flat so run to da chopper
}

That way you dont need to use tags. But if like tags.
You could try.

for (var child : Transform in transform) {
if(child.tag==tire01) {
child.GetComponent(tireControl).punctured = true; 
}
//this works if your talking from the parent script

:smile:

3

Thank you Black Mantis.

Both approaches are good, although I prefer not to use global variables. A related question is: Is there a single call, using perhaps looping or an array, instead of this working but ridiculous code?

gameObject.Find("/car/tire01").GetComponent("tire control").punctured = true;
gameObject.Find("/car/tire02").GetComponent("tire control").punctured = true;
gameObject.Find("/car/tire03").GetComponent("tire control").punctured = true;
gameObject.Find("/car/tire04").GetComponent("tire control").punctured = true;
4

You could use GetComponentsInChildren, which returns an array of all components of a certain type in the transform tree.

You’ll probably have to sort the array by gameobject name if you need to be able to address specific tires differently, though.

5

@tomvds

I tried GetComponentsInChildren() function, and it also worked great. Thanks a lot.