Need to increase the gameobject value .

Questions & Answers
1

I want to increase the value of extralives when player comes in contact with the health sprite. I have setup others details like box colllider and is triggered perfectly. I just want to know the command to increase a game object value (i.e. UIExtraLives increment by 1) . Each life is represented by an Health sprite and not the text . Bottom right down is the shown window for lives in the image. [100004-screenshot-20.png*|100004]

public GameObject[] UIExtraLives;

public void AddLife(int amount)
	{

		// update UI
		int i = UIExtraLives.Length;
		i++;
		UIExtraLives.Length *.SetActive (true);*
  • }*
2

First: Your player GameObject and your health sprite GameObject must both have a collider 2D. The Health Collider2D must be set as Trigger.

Then in your health object, Add a script with these lines of codes:

public void OnTriggerEnter2D(Collider2D other)
    {
        if (other.gameObject.GetComponent<PlayerScript>())
        {
            other.gameObject.GetComponent<PlayerScript>().AddLife(1);
            //If you want to destroy the object...
            Destroy(gameObject);
        }
    }

And of course, change the PlayerScript to the proper name of the script containing the public void AddLife(int amount).

Then you should change your codes in AddLife(int amount):

public GameObject[] UIExtraLives;
public int actualExtraLives = 1, maximalExtraLives = 5; 

 public void AddLife(int amount)
     {
        if (actualExtraLives < maximalExtraLives)
            actualExtraLives += amount;
        if (actualExtraLives > 0)
            UIExtraLives[(actualExtraLives - 1)].SetActive (true);
     }
3

thanks for the reply. I want to know one more thing .

why u wrote

      if (actualExtraLives < maximalExtraLives)
         actualExtraLives += amount;
     if (actualExtraLives > 0)
         UIExtraLives[(actualExtraLives - 1)].SetActive (true);

Isn’t there in command where we can increase the value of UIExtraLives in just one line.

Like :

            UIExtraLives[ (initial valual of UIExtraLives + 1)].SetActive(true);

Sorry for asking this but I just started coding a while back.