49a.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Generator : MonoBehaviour
{
    public GameObject greenMan;
    private float time;
    private float interval = 1f;

    DefeatCount defeatCount;

    void Start()
    {
        defeatCount = GameObject.Find("DefeatCount").GetComponent<DefeatCount>();
    }

    void Update()
    {
        time += Time.deltaTime;

        if(time > interval)
        {

            GameObject copy = Instantiate(greenMan, this.transform.position,
                    Quaternion.identity);

            defeatCount.AddMonsterCount();

            time = 0;
        }

    }
}