Collision based scoring system

Questions & Answers
1

Hello, I’m trying create a scoring system which involves collecting coins to increase the score and colliding with rocks, which decreases the score.
I’m currently using this script:

    var score = 0;
var scoreText = "Score: 0";
var mySkin : GUISkin;

function OnTriggerEnter( other : Collider ) {
    Debug.Log("OnTriggerEnter() was called");
    if (other.tag == "Coin") {
        Debug.Log("Other object is a coin");
        score += 1;
        scoreText = "Score: " + score;
        Debug.Log("Score is now " + score);
        Destroy(other.gameObject);
    }
}

function OnGUI () {
    GUI.skin = mySkin;
    GUI.Label (Rect (10, 10, 500, 200), scoreText.ToString()); }

The script works perfectly fine. However I’m unsure as to how to include a script which, on collision with a ‘Rock’, decreases the score. I’ve tried adding this to the original script, but to no avail:

function OnTriggerEnter( other : Collider ) {
    Debug.Log("OnTriggerEnter() was called");
    if (other.tag == "Rock") {
        Debug.Log("Other object is a rock");
        score += -1;
        scoreText = "Score: " + score;
        Debug.Log("Score is now " + score);
    }
}

Thank you for any answers or feedback.
-Ben

2

You could simply do:

function OnTriggerEnter(other : Collider ) {
    if (other.tag == "Coin") {
        Debug.Log("Other object is a coin");
        score += 1;
        scoreText = "Score: " + score;
        Debug.Log("Score is now " + score);
        Destroy(other.gameObject);
    }
    else if (other.tag == "Rock") {
    Debug.Log("Other object is a rock");
    score += -1;
    scoreText = "Score: " + score;
    Debug.Log("Score is now " + score);
    }
}

If the score can’t be < 0, in any time, substitute

else if (other.tag == "Rock") {

with:

else if (other.tag == "Rock" && score > 0) {