how would you call a variable from another class

Unity Engine
1

i have a variable in another class that i wish to change it is public but i can not find any way of calling it. How do you do this?

2

Make an instance of the class that’s gonna change the value inside the class that will use it and change the value of your public variable. Something like this:

private ClassWithPublicVariable myClass = new ClassWithPublicVariable();


void Start()
{
    myClass.MyPublicVariable = 0;
}
3

Actually this isn’t completely accurate. This will let you access the variable (but it doesn’t change it at run-time).

If you want to access a variable that’s currently in play, then you first need to reference the GameObject that the script that has the variable is attached to. For example, if player A fires a bullet at player B, and I want to take health away from player B, doing it the way that @jorgemk85 suggested won’t work. You’d have to do something like…

void Update(){
   GameObject playerB = FindGameObjectWithTag("PlayerB");
   PlayerHealthScript playerBHealth = playerB.GetComponenet<PlayerHealthScript>();
   if(/*Put your condition here for if the bullet hits or not.*/){
      playerBHealth.playerHP -= damage;
   }
}
1 Like
4

It seems like my programming example got misunderstood… It was just an example of how to change a value of a public variable since the OP doesn’t seem to know how at all…

Anyway, hope your approach helps outlaw1148.

5

No worries, I just wanted to make sure to cover all bases.