Instantiate on value change

Questions & Answers
1

I’ve search an answer for this simple question but didn’t found something really helpful.
In my project I have a script with a simple int variable “Damage” that store the amount of Damage the character receive everytime he gets hit by a trap.
I just want to instantiate a damage text each time his “Health” value change. I thought this would be really easy, something like Damage.OnValueChange… But I can’t figure out how to do that !

4

You can use System.Action from msdn C# like this:

public class MyClass : MonoBehaviour
{
    public Action onHealthChange;
    public int myHealth = 5;

    public void AddHP ( int amount)
    {
          myHealth += amount;
          if ( amount != 0 && onHealthChange != nulll )
              onHealthChange.Invoke();
    }
}

Then in another class you could do:

public class AnotherClass : MonoBehaviour
{
     public MyClass mc;
     
     void OnEnable()
     {
            mc.onHealthChange += MyFunction;
     }
     void OnDisable()
     {
            mc.onHealthChange -= MyFunction;
     }

    void MyFunction()
    {
          Debug.Log("Health changed");
     }
}

You can also make onHealthChange static, and then just suscribe to that event like MyClass.onHealthChange += MyFunction;

3

His health value changes when he takes damage, call your function from there.

6

Thanks for the answers I’m trying to make this work

2

It would depend on where you apply the damage to the health.
just write the line:

Instantiate([yourGameObject], transform2Inst, Quaternion.identity) as GameObject;

somewhere inside the same method.

5

call the funciton to instantiate at the same place where you modify the health from the damage taken…