Double collision with Character Controller?

Questions & Answers
1

Hi folks, i'm relatively new to programming and even more so with Unity.

What i'm trying to do is create Pac-man for a University Coursework. I have quite a lot of it working, however a new problem has arisen and I don't know why.

Pac-man used to have a rigidbody attached to handle the collisions, however due to the forces applied (I think?) he kept bouncing off the maze walls. On further research I found the Character Controllers do not take forces into account. All was working well until I realised that more often than not double the score was given for each pellet consumed (sometimes the correct score was given). This only happened after I changed to Character Controller.

I've checked the log and it is incrementing by 100 but incrementing twice per collision. Any help is greatly appreciated.

Here's my Consume code:

private var score : int = 0;
private var stringScore : String;
private var scoreObject : GameObject;

scoreObject = gameObject.Find("Score");

function OnControllerColliderHit(hit : ControllerColliderHit)
{
    var collide = hit.gameObject;
    if(collide.tag == "Pellet")
    {
        Destroy(collide.gameObject);
        score += 100;

        Debug.Log(score);
    }
    stringScore = score.ToString();
    scoreObject.GetComponent(TextMesh).text = stringScore;
}
3

Just disable the pellet collider when you eat it, boom no more collisions and it will eventually get destroyed.

I don't have Unity if front of me, but it should be something along the lines of gameObject.Collider.Active = false

Or...just disabling the whole pellet might do the trick also.

2

Try DestroyImmediate instead of Destroy - it could be that your other object is hanging around for two fixedupdates before being deleted (which is feasible - you get 0 to lots of fixed updates every frame, depending on the timing)

Edit, since that failed spectacularly:

collide.transform.position.y -= 10000;
Destroy(collide.gameObject);

that should just move the other object far away from the play zone so it can't be collided with twice

4

Instead of using `OnControllerColliderHit` try an `OnTriggerEnter` or `OnCollisionEnter`. This will ensure that your if statement is only called once.