Question by UDN_2f0abe75-257a-49c7-aaed-cdb8b48980dc · Oct 30, 2016 at 07:52 PM · c#loop foreach array of gameobjects

How can I check the color of GameObjects in an Array and print out their color?

Hi, I've been struggling to do this for a while. I found this snippet of code written in JS to check the color of GameObjects with a certain tag. I want to do the same but in C#. Here is that code from 2014.

  var counter : int;
  var specifiedAmount : int;
  
  function Update()
  {
      counter = 0;
  
      for(var go : GameObject in GameObject.FindGameObjectsWithTag("Tile"))
      {
          if(go.renderer.material.color == Color.blue)
          {
              counter++;
          }
      }
  
 }

However, I have found that the "go.renderer" line is no longer available in Unity 5. Is there any fix for this?

Here is my code:

 using UnityEngine;
 using System.Collections;
 
 public class ChangeColor : MonoBehaviour {
     float timeLeft = 10.0f;
     int counter; 
     Renderer rend;
 
 
     // Use this for initialization
     void Start () {
         counter = 0;
 
         rend = GetComponent<Renderer> ();
 
     
 
     }
     
     // Update is called once per frame
     void Update () {
         
 
         timeLeft -= Time.deltaTime;
         if (timeLeft < 0) {
             Debug.Log ("You covered " + counter + " tiles in 10 seconds!");
         }
 
         foreach (GameObject go in ..................)  {
             
             counter++;
 
 
         }
 
 
     }
 
     void OnCollisionEnter(Collision col) {
         
         rend.material.color = Color.blue;
 
         }
     }

What would I add to make it do what I want it to do?

Thanks,

0 Show 7

Ahndrakhul · Oct 30, 2016 at 08:30 PM 0

I think you need to use GetComponent to do what you're trying to do.

An updated version of that JS code would look like this:

 foreach (GameObject go in GameObject.FindGameObjectsWithTag("Tile"))  
 {             
     if(go.GetComponent<Renderer>().material.color == Color.blue)
     {
             counter++;
     }
 }

UDN_2f0abe75-257a-49c7-aaed-cdb8b48980dc Ahndrakhul · Oct 30, 2016 at 08:53 PM 0

That's right Can you help me with that?

Ahndrakhul UDN_2f0abe75-257a-49c7-aaed-cdb8b48980dc · Oct 30, 2016 at 09:12 PM 0

If you want to keep things similar to how you have them, you will probably have to split your one class into two. The ChangeColor class would be attached to each of your game objects that is tagged "Tile" and would consist only of OnCollisionEnter like

  void OnCollisionEnter(Collision col) 
 {         
        gameObject.GetComponent<Renderer>().material.color = Color.blue;
  }

The other class would be responsible for the timer and the counting and would be attached to an empty game object in the scene. It would look something like

 public class GameControl : MonoBehaviour
 {
     float timeLeft = 10.0f;
     int counter;
 
     void Start()
     {
         counter = 0;
     }
 
     void Update()
     {
         timeLeft -= Time.deltaTime;
 
         if(timeLeft <= 0)
         {
             foreach(GameObject go in GameObject.FindGameObjectsWithTag("Tile"))
             {
                 if (go.GetComponent<Renderer>().material.color == Color.blue)
                 {
                     counter++;
                 }
             }
 
             Debug.Log("You covered " + counter + " tiles in 10 seconds!");
         }
     }
 }

Show more comments

UDN_2f0abe75-257a-49c7-aaed-cdb8b48980dc Ahndrakhul · Oct 30, 2016 at 08:58 PM 0

The idea of the game is to run over as many tiles as possible and turn as many of them as you can to blue in 10 seconds and then display how many tiles are blue.

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