Using a member variable from one function in another

Questions & Answers
1

I've never actually needed to do this until now and I can't understand how.

I'm trying to get the `hit.normal` variable from one function to use in another function within the same script.

function spawn() {
    //Im trying to use the hit.normal from GetPointOnMesh function
    var startRot = Quaternion.LookRotation(hit.normal);
    var fissurePrefs = Instantiate(fissure, randomPoint.point, startRot);
} 

function GetPointOnMesh() : RaycastHit{
    var hit : RaycastHit;
    Physics.Raycast (ray, hit, length*2);
    return hit;
}
3

this is more of a general programming question. Its a matter of scoping. Variables created within a function cannot be accessed outside of the function. So to have it be able to be accessed from outside the function, just initialize it outside the function, like so:

var hit:RaycastHit;
function spawn(){...}
function GetPointOnMesh(){...

now the problem here is, you will have to check if hit is null or not before doing your LookRotation. Hope this helps you out.

2

Variables declared inside a function are local to that function only. Since you're returning the RaycastHit from GetPointOnMesh, just call that function instead of using "hit" in your spawn function.

4

Kennypu explained the matter of scoping, but you might want to use this approach, I did not test this specific example, but it should work:

function GetPointOnMesh():RaycastHit{
    var hit : RaycastHit;
    Physics.Raycast (ray, hit, length*2);
    spawn(hit.normal);
}

function spawn(thePoint){
    var startRot = Quaternion.LookRotation(thePoint);
    var fissurePrefs = Instantiate(fissure, randomPoint.point, startRot);
}

Simply send the hit.normal as a parameter to the next function.