Get child tag from parent-child collision

Questions & Answers
1

I have a setup where I am building a maze recursively with square tiles. To try and limit the squares that a maze tile can be placed in, I’ve set up each tile with several children box colliders. These children are supposed to toggle a boolean in the parent script, but the children’s tags don’t affect the parent script, so the booleans are never toggled. Can I use the tag from the child in the parent’s collision script?

The C# snippet is from the parent object. open is a bool array, countOpen is a counter

   void onTriggerEnter (Collision other) {
    		if (this.tag.Equals("box4")) {
    			open[3] = false;
    			countOpen--;
    		}
    		if (this.tag.Equals("box3")) {
    			open[2] = false;
    			countOpen--;
    		}
    		if (this.tag.Equals("box2")) {
    			open[1] = false;
    			countOpen--;
    		}
    		if (this.tag.Equals("box1")) {
    			open[0] = false;
    			countOpen--;
    		}
    
    	}

Is there a method objects can invoke to get the tag from a child object during a trigger event? If you need more details I’d be happy to supply them when I return.

2

void onTriggerEnter (Collision other) {
//this wil only find a single one
if (this.transform.find(“childname/orgrandchild”).gameObject.tag ==“box4”) {
open[3] = false;
countOpen–;
}
//this is maby better for you:
var gos = GameObject;
gos = GameObject.FindGameObjectsWithTag(“box”);
foreach( GameObject taged in gos) {
if (taged.tranform.gameObject.parent == this) {
//You can name each box diffrent so your have a unique check
if (taged.tranform.gameobject.name == “nameofbox”) {
//do something
}
}
}
}

Extra:

From the child element

if you just want to set variables its easier from the child:

void onTriggerEnter (Collision other) {
    if (other != this.transform.gameObject.parent) return;
    if (this.CompareTag("box4")) {
        other.gameObject.open[1] == false
        other.gameObject.countOpen--;
    }
}