How to create a link between HealthScript and HealtBar script ?

Question

Hi everyone!

The thing I would like to do is that when my health points' player go down, its health bar goes down too. But I don't know how can I do. Maybe something like create a "link" between these two scripts...? I'm novice in scripting...

These are my HealthScript and my HealthBar script:

using UnityEngine;

public class HealthScript : MonoBehaviour {

 public int hp = 5;


 public bool isEnemy = true;

 void OnTriggerEnter2D(Collider2D collider)
 {
     
     ShotScript shot = collider.gameObject.GetComponent<ShotScript>();
     if (shot != null)
     {
         
         if (shot.isEnemyShot != isEnemy)
         {
             hp -= shot.damage;

           
             Destroy(shot.gameObject);

             if (hp <= 0)
             {
                 
                 Destroy(gameObject);
             }
         }
     }
 }

}

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

public class HealthBar : MonoBehaviour {

 #region Attributes

 public GameObject healthBar;
 public Color goodColor;
 public Color middleColor;
 public Color badColor;

 #endregion

 #region Unity methods

 void Start()
 {
     SetColor();
 }

 #endregion

 #region Other methods

 public void SetDamages(float value)
 {
     healthBar.GetComponent<Scrollbar>().size -= value;

     float totalValue = healthBar.GetComponent<Scrollbar>().size;

     SetColor(totalValue);
 }


 void SetColor(float value = 1)
 {
     if(value >= 0.5f)
     {
         healthBar.transform.FindChild("Mask").FindChild("Sprite").GetComponent<Image>().color = goodColor;
     }
     else if(value >= 0.25f && value < 0.5f)
     {
         healthBar.transform.FindChild("Mask").FindChild("Sprite").GetComponent<Image>().color = middleColor;
     }
     else
     {
         healthBar.transform.FindChild("Mask").FindChild("Sprite").GetComponent<Image>().color = badColor;
     }
 }

 #endregion

}

Could someone help me please? :)

Answer 1

Answer by JedBeryll · May 14, 2016 at 01:34 PM

Create a variable for the health bar in the HealthScript like this:

 public HealthBar healthBar;

Then assign it in the inspector.

          if (hp <= 0)
          {
              Destroy(healthBar.gameObject);
              Destroy(gameObject);
          }

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Dumoria · May 15, 2016 at 08:44 AM 0

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I created the variable in the HealthScript, and now you say that I must assign this script in the inspector of the health bar?

JedBeryll Dumoria · May 15, 2016 at 09:02 AM 0

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No, you have the variable in the HealthScript so drag and drop your healthBar gameObject into your HealthScript's variable.

Dumoria JedBeryll · May 15, 2016 at 09:48 AM 0

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The thing is that I can't drag and drop nothing in my HealthScript's variable... No prefab, no gameobject, nothing (as you can see in the photo alt text ) ^^' Did I make a mistake somewhere?

no-variable.jpg (18.2 kB)

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How to create a link between HealthScript and HealtBar script ?

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