1

In a patrolling system I have what the current patrol point is, but I’d like to know what the previous patrol point is as well to make this work:

if (currentPatrolPoint.position.y < previousPatrolPoint.position.y) { anim.SetBool("walkDown", true); downSearch.SetActive(true);

This is what I have so far:

 if (currentPatrolIndex == 0)
            {
                previousPatrolIndex = patrolPoints.Length;
            }
            else
            {
                previousPatrolIndex = (currentPatrolIndex - 1);
            }

            currentPatrolPoint = patrolPoints[currentPatrolIndex];
            previousPatrolPoint = patrolPoints[previousPatrolIndex];

But the last line is pulling up an error that says, “Array index is out of range.” Help please? Thanks!

2

If the currentPatrolIndex was 0, this would set previousPatrolIndex to the length of your array. The problem is that array lengths start at 1 and array indexes start at zero, so where an array that has 5 indexes has a length of 5, the indexes range from 0-4.

To get around it, make your first if statement do this instead:

previousPatrolIndex = (patrolPoints.Length - 1);

This will then make sure it goes to the last entry in the array and not the one after (which doesn’t exist). I hope that helps :slight_smile: