how to change object's B color when object A is in range? 2D

Question

I have an enemy AI object that randomly patrols a top down 2d maze(object B) and within this maze are tiles(multiple objects of A). I'm having trouble figuring out a way to change any tiles that is within close distance to the enemy object B. Here is my code:

 public Transform blocks;
 
     private void Update()
     {
         blocks = GameObject.FindGameObjectWithTag("Breakable_Block").transform;
 
         if (Vector2.Distance(transform.position, blocks.position) < 10)
         {
             blocks.GetComponent<Renderer>().material.color = Color.green;
         }
        
 
     }

Thanks in advance!

Answer 1

Answer by tormentoarmagedoom · Jul 17, 2018 at 06:44 AM

Good day.

Look at your code:

GameObject.FindGameObjectWithTag("Breakable_Block") is a single object

you can go find all blocks, and check all of them if...

  public Transform[] blocks;
 
  private void Update()
  {
       blocks = GameObject.FindGameObjectsWithTag("Breakable_Block").transform;

    foreach (Transform OneBlock in blocks)
   {
      if (Vector2.Distance(transform.position, OneBlock.position) < 10)
      {
          OneBlock.GetComponent<Renderer>().material.color = Color.green;
      }
    }
 
 }

Now, you check all the blocks positions, 1 by 1, and thatones thar are closer than 10, will change its color.

Bye!

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angelmendez003 · Jul 18, 2018 at 04:27 AM 0

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hello and thank you for answering my question. I've applied your code but I get this error.

Severity Code Description Project File Line Suppression State Error CS1061 'GameObject[]' does not contain a definition for 'transform' and no extension method 'transform' accepting a first argument of type 'GameObject[]' could be found (are you missing a using directive or an assembly reference?) Assembly-CSharp C:\Users\mende\Desktop\Unity Projects\InvisibleMaze\Assets\Scripts\Enemy\EnemyHotSpot.cs 11 Active

how to change object's B color when object A is in range? 2D

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