Resolved Sanity check needed: OnCollisionEnter2D, basic 'shoot enemy, they take damage' script interaction

Hey guys,

Dusting off old bones of a game and trying to get OnCollisionEnter2D to work (it worked before but now it's not). I'm sure I'm missing something hilariously obvious.

====method in script attached to bullet

void onTriggerEnter2D (Collider2D col) {
Debug.Log("HIT");
EnemyHealth Healthinter = col.GetComponent<EnemyHealth>();
if (Healthinter != null) {
Healthinter.damageReceived(damage);
}
}

====method in script attached to enemy (named EnemyHealth)

public void damageReceived (float damage) {
health -= damage;
Debug.Log(this.name + " has taken [" + damage + "] damage.");

if (health<=0) {
dead(); //this is referenced elsewhere
}
}

I have both enemy and bullet attached with 2DRigidbodies and 2DPolygoncolliders (set as triggers) and I doublechecked to make sure they were actually hitting each other. Yet I am getting no interaction, including not getting any relevant log entries.

Unity version is 2020.1.0f1

Any help would be appreciated!

 

onTriggerEnter2D

is misspelled. It should be

OnTriggerEnter2D

if you're using recent versions of Visual Studio and Unity, the IDE should give you this little helper above any Unity message functions:


If you don't see that "Unity Message" notice, it could be a sign that something is not spelled right. Also, always check the list of "Messages" here to make sure things are spelled right: https://docs.unity3d.com/ScriptReference/MonoBehaviour.html

 

I knew it was something as innocuous as that! This is what happens when I let a project collect dust for a few weeks haha.

That was it! Thank you for the sanity check!