Manipulating existing ui text from a runtime created prefab

Unity Engine
1

I am having a problem trying to manipulate an existing UI Text “score” after destroying a runtime instantiated prefab.

  • public variables don’t link on a prefab
  • tried from a prefab script

//// make a script component for “scoreTxt” called “scoreTrckr”
//// make a public text scrTxt in “scoreTrckr”, link it to “scoreTxt”
//// make a public int thScr in “scoreTrckr”,

/// remember * scrTxt is linked to scoreTxt.text
//// update scrTxt = thScr.ToString ();

void OnMouseDown(){
GameObject thscr = GameObject.FindWithTag (“scoreTxt”); //find the gameObject /w tag
thscr.GetComponent().thScr += 500;
Destroy (this.gameObject);
}

This works while compiling and testing the game, but not when the game is deployed.

How do I get runtime created prefabs to communicate with existing GameObjects and public variables?

2

When you instantiate the game object, you can get the component script (on the return value from instantiate).
Then, pass a reference to the text object to the script on the new object.

3

nevermind, got it working

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class ScoreTracker : MonoBehaviour {

public Text scoreText;

private int ttlScr;
public static int scrCst;

void Update(){
ttlScr += scrCst;
scrCst = 0;
scoreText.text = ttlScr.ToString();
}
}

Attached this to all my prefabs, and the ui text. It calls a null public text on the prefabs, but the static scrCst adds up and updates. Hopefully this holdsup and doesn’t cause future issues.

4

I think you could improve upon that if you use my suggestion, that i posted above. You could send the reference to the text component or to the ScoreTracker script.

One other small addition I’d mention is that you could use a ScoreAdd method, and only update the score text when your score changes. Doing that, you would avoid modifying the text every frame, even when it doesn’t change.