Here's a slightly modified version of the built-in Find Closest action that optionally allows the user to ignore the object that owns the FSM that contains this action.
To update the built-in action with this version, replace the code inside the Assets/PlayMaker/Actions/FindClosest.cs script with the code below.
// (c) Copyright HutongGames, LLC 2010-2011. All rights reserved.
using UnityEngine;
namespace HutongGames.PlayMaker.Actions
{
[ActionCategory(ActionCategory.GameObject)]
[Tooltip("Finds the closest object to the specified Game Object.\nOptionally filter by Tag and Visibility.")]
public class FindClosest : FsmStateAction
{
[RequiredField]
public FsmOwnerDefault gameObject;
[RequiredField]
[UIHint(UIHint.Tag)]
public FsmString withTag;
[Tooltip("If checked, ignores the object that owns this FSM.")]
public bool ignoreOwner;
public FsmBool mustBeVisible;
[UIHint(UIHint.Variable)]
public FsmGameObject storeObject;
[UIHint(UIHint.Variable)]
public FsmFloat storeDistance;
public bool everyFrame;
public override void Reset()
{
gameObject = null;
withTag = "Untagged";
mustBeVisible = false;
storeObject = null;
}
public override void OnEnter()
{
DoFindClosest();
if (!everyFrame)
Finish();
}
public override void OnUpdate()
{
DoFindClosest();
}
void DoFindClosest()
{
GameObject go = gameObject.OwnerOption == OwnerDefaultOption.UseOwner ? Owner : gameObject.GameObject.Value;
GameObject[] objects = GameObject.FindGameObjectsWithTag(withTag.Value);
GameObject closestObj = null;
var closestDist = Mathf.Infinity;
foreach (var obj in objects)
{
if (ignoreOwner && obj == Owner)
continue;
if (mustBeVisible.Value && !ActionHelpers.IsVisible(obj))
continue;
var dist = (go.transform.position - obj.transform.position).sqrMagnitude;
if (dist < closestDist)
{
closestDist = dist;
closestObj = obj;
}
}
storeObject.Value = closestObj;
storeDistance.Value = closestDist;
}
}
}
