find objects and go there with nav mesh agent

Questions & Answers
1

hi!
i have a few targetobjects an an enemy in my unity scene. i want that the enemy finds the closest targetobject and goes to it, using nav mesh agent. finding the closest targetobject works, also moves the enemy, but he will always go to the point 0,0,0, no matter where the targetobjects are. does anybody know why? i also wantet to ask, if someone could tell me, how i can complement my script so that the enemy, after he found and went to a targetobject, will move forward to the next closest one and not stay with this, because it is the closest for now. thanks a lot!
so far, i wrote the following script:

private var targetPosition : Vector3;

private var directionNavAgent : NavMeshAgent;

function Start()

{
directionNavAgent = GetComponent(NavMeshAgent);

directionNavAgent.destination = targetPosition;

}

print(FindClosestTarget().name);

function FindClosestTarget () : GameObject {

var gos : GameObject[];
gos = GameObject.FindGameObjectsWithTag("Target"); 
var closest : GameObject; 
var distance = Mathf.Infinity; 
var position = transform.position; 

for (var go : GameObject in gos)  { 
    var diff = (go.transform.position - position);
    var curDistance = diff.sqrMagnitude; 
    if (curDistance < distance) { 
        closest = go; 
        distance = curDistance; 
    } 
} 
return closest; 
targetPosition = closest.transform.position;

}

2

So you are setting the destination for the agent in Start - but at that time you haven’t actually set the target position. You are also setting something after doing a return - that code will never run.

If you want this to happen at a point after Start() then you will need to execute that find nearest again and update the agent.

Try this:

private var targetPosition : Vector3;

private var directionNavAgent : NavMeshAgent;

function Start() {
    MoveToClosest();
}

function MoveToClosest()
{ directionNavAgent = GetComponent(NavMeshAgent);
FindClosestTarget();
directionNavAgent.destination = targetPosition;
}



function FindClosestTarget () : GameObject {

var gos : GameObject[];
gos = GameObject.FindGameObjectsWithTag("Target"); 
var closest : GameObject; 
var distance = Mathf.Infinity; 
var position = transform.position; 

for (var go : GameObject in gos)  { 
    var diff = (go.transform.position - position);
    var curDistance = diff.sqrMagnitude; 
    if (curDistance < distance) { 
        closest = go; 
        distance = curDistance; 
    } 
} 
targetPosition = closest.transform.position;  
return closest; 
}
3

well for going to next target, the simple way i can think of, make a list of all targets at the start, then in update check if you reached the first target, then remove it from the list and chose the next target, then add the previous target at the end of the list and this will loop as long as you desire