Не могу понять смысл задания на C#/Unity

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Cannon : MonoBehaviour
{
    public GameObject CannonObject;
    public GameObject CannonBallPrefab;
 
    public float RotateSpeed;
 
    public ICannonAI CannonAi;
 
    public int MaxAmmo;
    private int _ammo;
 
    public event CannonBall.CannonBallHitHandler Hit;
    public event EventHandler NoAmmo;
 
    void Start ()
    {
        Reload();
    }
 
    IEnumerator PrepareShoot(float shootAngle)
    {
        var currentAngle = Vector3.Angle(CannonObject.transform.rotation * Vector3.forward, Vector3.forward);
        var rotateStep = (shootAngle - currentAngle) * RotateSpeed;
 
        for (float angle = currentAngle; Mathf.Abs(angle - shootAngle) > 0.1f; angle += rotateStep)
        {
            CannonObject.transform.rotation = Quaternion.AngleAxis(angle, Vector3.left);
            yield return null;
        }
 
        CannonObject.transform.rotation = Quaternion.AngleAxis(shootAngle, Vector3.left);
 
        yield return new WaitForSeconds(1);
 
        var cannonBall = Instantiate(CannonBallPrefab, CannonObject.transform.position, CannonObject.transform.rotation);
        var cannonBallComponent = cannonBall.GetComponent<CannonBall>();
 
        cannonBallComponent.Hit += CannonBallComponent_Hit;
        cannonBallComponent.Hit += Hit;
    }
 
    private void CannonBallComponent_Hit(bool hitTarget, float distance)
    {
        if (!hitTarget)
        {
            CannonAi.FeedbackHitDistance(distance);
            Shoot();
        }
    }
 
    public void StartShooting(float distance)
    {
        CannonAi.SetTarget(distance);
        Shoot();
    }
 
    public void Reload()
    {
        _ammo = MaxAmmo;
    }
 
    private void Shoot()
    {
        if (_ammo <= 0)
        {
            if (NoAmmo != null) NoAmmo.Invoke(this, EventArgs.Empty);
            return;
        }
 
        _ammo--;
        
        var shootAngle = CannonAi.GetShootAngle();
        StartCoroutine(PrepareShoot((float)shootAngle));
    }
}

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Random = UnityEngine.Random;
 
public class Main : MonoBehaviour
{
    public Cannon Cannon;
    public GameObject TargetPrefab;
    public int MinTargetDistance;
    public int MaxTargetDistance;
 
    private float _currentDistance;
 
    private GameObject TargetInstance;
 
    void Start () {
        Cannon.CannonAi = new CannonAI();
 
        Cannon.Hit += CannonOnHit;
        Cannon.NoAmmo += CannonOnNoAmmo;
 
        NewTest();
    }
 
    private void CannonOnNoAmmo(object sender, EventArgs eventArgs)
    {
        Debug.Log("Не осталось боеприпасов!");
    }
 
    private void NewTest()
    { 
        _currentDistance = GetNewTargetPosition();
        Cannon.Reload();
        Cannon.StartShooting(_currentDistance);
        TargetInstance = Instantiate(TargetPrefab, new Vector3(0, 0, _currentDistance), new Quaternion());
    }
 
    private void CannonOnHit(bool hitTarget, float distance)
    {
        if (hitTarget)
        {
            Debug.Log("Попадание!");
            Destroy(TargetInstance);
            NewTest();
        }
        else
        {
            Debug.Log(distance < _currentDistance ? "Недолет!" : "Перелет!");
        }
    }
 
    int GetNewTargetPosition()
    {
        return Random.Range(MinTargetDistance, MaxTargetDistance);
    }
}