Trying to Call a Function From Tagged Objects

Questions & Answers
1

Hi there,

I try not to ask questions and use Google as much as possible, but I am completely stuck.

I am trying to run a script which upon a GUI button click, calls a function from all objects in the scene with a specific tag. All of these objects will have the same script on them. Here is my code, but I just can’t seem to get it right.

using UnityEngine;
using System.Collections;


public class TheGUI : MonoBehaviour {

	public Detonator derpy;

	void OnGUI () {

		Detonator derpy = GameObject.FindGameObjectsWithTag ("Bombs");

		// Make a background box
		GUI.Box(new Rect(10,10,100,90), "Loader Menu");
		
		// Make the first button. If it is pressed, Application.Loadlevel (1) will be executed
		if(GUI.Button(new Rect(20,40,80,20), "Esplode")) {
			derpy.Explode();
		}
	}
}

Thanks in advance!!!

You guys are always so helpful.

2

GameObject.FindGameObjectsWithTag will return an array of all the game objects found with that tag. So you need to store that into an array and not a single variable.

So if you want to explode all the game objects after the button click the code should be:

public class TheGUI : MonoBehaviour {

GameObject[] bombs;

    void Start()
    {
        bombs = GameObject.FindGameObjectsWithTag ("Bombs");
    }

    void OnGUI () {
 
        // Make a background box
        GUI.Box(new Rect(10,10,100,90), "Loader Menu");
 
        // Make the first button. If it is pressed, Application.Loadlevel (1) will be executed
        if(GUI.Button(new Rect(20,40,80,20), "Esplode")) {
             for(int i=0; i<bombs.Length; i++)
             {
                 bombs*.GetComponent<Detonator>().Explode();*

}
}
}
}

3

FindGameObjectsWithTag() returns an array of game objects. So you would do something like this:

    if(GUI.Button(new Rect(20,40,80,20), "Esplode")) {
        GameObject[] objs = GameObject.FindGameObjectsWithTag ("Bombs");
        foreach (GameObject go in objs) {
            Detonator derpy = go.GetComponent<Detonator>();
            if (derpy != null) {
                 derpy.Explode();
             }
        }
    }