Question

I’m following an XNA tutorial and have the following code for collision detecting (detecting when a bullet collides with a target). Basically I’m looking to increment a score variable to display the score to the screen without re-writing the whole program. No matter where I place it in this method it seems to start incrementing from the number of targets, not from zero. Is there something simple I’m missing here? Any help would be greatly appreciated. Thanks.

private CollisionType CheckCollision(BoundingSphere sphere)
{
    if (completeCityBox.Contains(sphere) != ContainmentType.Contains)
        return CollisionType.Boundary;

    for (int i = 0; i < targetList.Count; i++)
    {
        if (targetList[i].Contains(sphere) != ContainmentType.Disjoint)
        {
            targetList.RemoveAt(i);
            i--;
            AddTargets();
            return CollisionType.Target;
        }
    }

    return CollisionType.None;
}

Answer 1

Assuming you’re not incrementing / assigning the score variable anywhere else, and it’s set to zero during initialization, the only other thing I can think of is that somehow you’re triggering a collision with all of your objects – is that possible somehow, perhaps during the setup phase? Have you tried setting a breakpoint on your score increment line to see when it gets hit?