Sensor

using UnityEngine;
using System.Collections;

public class Sensor : MonoBehaviour {

    public static GameObject captureTarget;

    public static GameObject containTarget {
        get {
            return captureTarget;
        }
        set {
            captureTarget = value;
        }
    }

    void OnTriggerEnter2D(Collider2D other) {
        containTarget = other.gameObject;
        //Debug.Log(containTarget.tag);
    }

    void OnTriggerExit2D(Collider2D other) {
        if(containTarget != null){
            containTarget = null;
        }
    }
}