koobas.hobune.stream
How do you change a variable in another gameobjects script
ok so basically im making a game wher the player shoots arrows and other projectiles now when these projectiles enter the game objects collider they destroy themselves and they are also supposed to lower the enemys health. the enemies health is a variable in its script. now how do i do that. heres what im doing private void OnTriggerEnter2D(Collider2D other) { if (other.CompareTag("Wall")) {
gameObject.SetActive(false);
}
if (other.CompareTag("Enemy"))
{
other.Health = other.Health - ;
gameObject.SetActive(false);
}
A couple things:
gameObject.SetActive(false)doesn't actually destroy an object. It just sets it invisible in the Hierarchy. You'll want to useDestroy(gameObject)instead.Which object is this script on? Is it on the arrow? If it is, the code does make sense, however, I'm not exactly certain how it compiles, because line 6 is invalid. Presumably, you meant to use a decrement operator (--) rather than just the one minus sign. However, this won't even resolve the identifier
Health, becauseotherin this case is aCollider2D. You'll want to doother.GetComponent<ScriptTypeContainingHealthVariable>().Health--or decrease by an amount you can set as a property of the arrow. Maybe it's a training arrow, so you can decrease health by 0. Or maybe it's a powerful arrow with a nasty looking arrowhead, so you might subtract 10 or more. Up to you:public class Arrow : MonoBehaviour { public int m_damage = 10; private void OnTriggerEnter2D(Collider2D other) { if (other.CompareTag("Wall")) { Destroy(gameObject); } if (other.CompareTag("Enemy")) { other.GetComponent<ScriptTypeContainingHealthVariable>().Health = other.GetComponent<ScriptTypeContainingHealthVariable>().Health - m_damage; Destroy(gameObject); } } }
other.Health doesn't work because other is a Collider2D. What you want to do is:
//Assuming your enemy script is called Enemy
Enemy enemy = other.GetComponent<Enemy>();
enemy.Health = enemy.Health - 1;
