C# (генерация уровня)

using UnityEngine;
using System.Collections;
 
public class GenerationBlock : MonoBehaviour {
    
    private bool use = false;
    
    public GameObject Block; 
    
    void Start () {
        transform.parent.gameObject.name = transform.parent.gameObject.name.Replace("(Clone)", "");
    }
    
    void OnTriggerEnter () {
        if(!use) {
            Explosion(new Vector3(transform.position.x - 10,0,transform.position.z), 1.0f); 
            Explosion(new Vector3(transform.position.x + 10,0,transform.position.z), 1.0f);
            Explosion(new Vector3(transform.position.x,0,transform.position.z + 10), 1.0f);
            Explosion(new Vector3(transform.position.x,0,transform.position.z - 10), 1.0f);
        }
        use = true;
    }
    
     void Explosion(Vector3 center, float radius) {
        Collider[] hitColliders = Physics.OverlapSphere(center, radius);
        if(hitColliders.Length == 0) 
            Instantiate(Block, center, Quaternion.identity);    
    }
}