#pragma strict
// TODO: Wait for this - will work in 3.3
//import System.Collections.Generic;
@script RequireComponent (Collider)
public var pingPong : boolean = false;
// TODO: In Unity 3.3 remove the System.Collections.Generic and impoprt the namespace instead
public var patrolPoints : System.Collections.Generic.List.<PatrolPoint> = new System.Collections.Generic.List.<PatrolPoint> ();
private var activePatrollers : System.Collections.Generic.List.<GameObject> = new System.Collections.Generic.List.<GameObject> ();
function Register (go : GameObject) {
activePatrollers.Add (go);
}
function UnRegister (go : GameObject) {
activePatrollers.Remove (go);
}
function OnTriggerEnter (other : Collider) {
if (activePatrollers.Contains (other.gameObject)) {
var ai : AI = other.gameObject.GetComponentInChildren.<AI> ();
if (ai)
ai.OnEnterInterestArea ();
}
}
function OnTriggerExit (other : Collider) {
if (activePatrollers.Contains (other.gameObject)) {
var ai : AI = other.gameObject.GetComponentInChildren.<AI> ();
if (ai)
ai.OnExitInterestArea ();
}
}
function GetClosestPatrolPoint (pos : Vector3) : int {
if (patrolPoints.Count == 0)
return 0;
var shortestDist : float = Mathf.Infinity;
var shortestIndex : int = 0;
for (var i : int = 0; i < patrolPoints.Count; i++) {
patrolPoints[i].position = patrolPoints[i].transform.position;
var dist : float = (patrolPoints[i].position - pos).sqrMagnitude;
if (dist < shortestDist) {
shortestDist = dist;
shortestIndex = i;
}
}
// If going towards the closest point makes us go in the wrong direction,
// choose the next point instead.
if (!pingPong || shortestIndex < patrolPoints.Count - 1) {
var nextIndex : int = (shortestIndex + 1) % patrolPoints.Count;
var angle : float = Vector3.Angle (
patrolPoints[nextIndex].position - patrolPoints[shortestIndex].position,
patrolPoints[shortestIndex].position - pos
);
if (angle > 120)
shortestIndex = nextIndex;
}
return shortestIndex;
}
function OnDrawGizmos () {
if (patrolPoints.Count == 0)
return;
Gizmos.color = Color (0.5, 0.5, 1.0);
var lastPoint : Vector3 = patrolPoints[0].transform.position;
var loopCount = patrolPoints.Count;
if (pingPong)
loopCount--;
for (var i : int = 0; i < loopCount; i++) {
if (!patrolPoints[i])
break;
var newPoint = patrolPoints[(i + 1) % patrolPoints.Count].transform.position;
Gizmos.DrawLine (lastPoint, newPoint);
lastPoint = newPoint;
}
}
function GetIndexOfPatrolPoint (point : PatrolPoint) {
for (var i : int = 0; i < patrolPoints.Count; i++) {
if (patrolPoints[i] == point)
return i;
}
return -1;
}
function InsertPatrolPointAt (index : int) : GameObject {
var go = new GameObject ("PatrolPoint", PatrolPoint);
go.transform.parent = transform;
var count : int = patrolPoints.Count;
if (count == 0) {
go.transform.localPosition = Vector3.zero;
patrolPoints.Add(go.GetComponent.<PatrolPoint>());
}
else {
if (!pingPong || (index > 0 && index < count) || count < 2) {
index = index % count;
var prevIndex : int = index - 1;
if (prevIndex < 0)
prevIndex += count;
go.transform.position = (
patrolPoints[prevIndex].transform.position
+ patrolPoints[index].transform.position
) * 0.5;
}
else if (index == 0) {
go.transform.position = (
patrolPoints[0].transform.position * 2
- patrolPoints[1].transform.position
);
}
else {
go.transform.position = (
patrolPoints[count-1].transform.position * 2
- patrolPoints[count-2].transform.position
);
}
patrolPoints.Insert(index, go.GetComponent.<PatrolPoint>());
}
return go;
}
function RemovePatrolPointAt (index : int) {
var go : GameObject = patrolPoints[index].gameObject;
patrolPoints.RemoveAt (index);
DestroyImmediate (go);
}
Google