array question

Unity Engine
1

hi, i’v little trouble with array:
if i use:
aa= ( aa + 1 ) % aaList.length;
it’s works correctly and when i get last element in array,it returns to frist.
but if i use:

aa= ( aa - 1 ) % aaList.length;

and i’ve the frist element,i get an exception of array.
how to solve?

2

aa = -1 % num; is an error.

Resort to creating a function like this:

var aaIndex = 0;
var aaArray : Array;

function NextAA(direction : boolean){
	direction ? aaIndex++ : aaIndex--; 
	if(aaIndex < 0) aaIndex = aaArray.length;
	if(aaIndex == aaArray.length) aaIndex = 0;
	return aaIndex;
}
3

thank’s,i’ve solved,nice answer :slight_smile: