While scripting bowling system I had to solve problem to monitor amount of ball in the arm, and control new ball providing.
Every time, when on the upper arm there is less than three ball I want to provide new ball. To find out how many balls is actually on arm, I was searching in unity for something like getListOfObjectsInWhichImInCollision(). What I found is
Physics.OverlapSphere which "Returns an array with all colliders touching or inside the sphere." The point is, that sphere is not the shape that I could use for my problem so I made class for arm and override functions OnCollisionEnter/OnCollisionExit.
class UpperArm extends MonoBehaviour {
private var ballAmount : int = 0;
private var ballTag = "Ball";
function OnCollisionEnter(c : Collision) {
if (itsBall(c)) {
ballAmount++;
}
}
function OnCollisionExit(c : Collision) {
if (itsBall(c)) {
ballAmount--;
}
}
function itsBall(c : Collision) {
return ((ballTag == c.transform.tag) ? true : false);
}
}
I needed only amount of balls on arm. If You need to have list of this objects: add a list variable and update it in onEnter/onExist function.
