koobas.hobune.stream
How to call an external method?
Hi, I have two scripts GameManager and GoldCatcher. GameManager holds most of the score-related computing while GoldCatcher serves only to detect collision. Now, I want to do this: GoldCatcher detects collision->sends some sort of message to GameManager->GameManager executes function ComputeGold.
I tried this:
public GameManager gamemanager;
void Start ()
{
gamemanager = GetComponent<GameManager>();
}
void OnTriggerEnter2D(Collider2D coin)
{
Debug.Log("collision2");
gamemanager.ComputeGold();
}
but that gives me an error in Unity: NullReferenceException: Object reference not set to an instance of an object. It gives me the same error even without the Start function.
Anyone knows how I should approach this? Please help.
Another way to achieve this is to use static function. You make your ComputeGold method static and you delete the 6 first lines of your GoldCatcher script.
The error can also come from your ComputeGold method.
Seeing as you've made gamemanager public, just get rid of the Start() function and drag the game manager script into the appropriate slot of the GoldCatcher component in the inspector.
