spawning and eating hamburgers code

using UnityEngine;

public class HamburgerGame : MonoBehaviour
{
    public GameObject hamburgerPrefab; // hamburger prefab to spawn
    public float spawnRate = 1.0f; // rate at which hamburgers spawn
    public float moveSpeed = 5.0f; // speed at which hamburgers move
    public int score = 0; // player's score
    public int lives = 3; // number of lives the player has

    private float spawnTimer; // timer for spawning hamburgers

    void Update()
    {
        // decrement spawn timer
        spawnTimer -= Time.deltaTime;

        // if spawn timer is less than or equal to 0, spawn a hamburger
        if (spawnTimer <= 0.0f)
        {
            SpawnHamburger();
            spawnTimer = 1.0f / spawnRate;
        }

        // move all hamburgers in scene
        foreach (GameObject hamburger in GameObject.FindGameObjectsWithTag("Hamburger"))
        {
            hamburger.transform.Translate(Vector3.left * moveSpeed * Time.deltaTime);

            // check if hamburger is out of bounds and destroy it
            if (hamburger.transform.position.x < -10.0f)
            {
                Destroy(hamburger);
                lives--;
            }
        }

        // check if player has pressed the space key to eat a hamburger
        if (Input.GetKeyDown(KeyCode.Space))
        {
            // get list of all hamburgers in scene
            GameObject[] hamburgers = GameObject.FindGameObjectsWithTag("Hamburger");

            // check if player is close enough to eat a hamburger
            foreach (GameObject hamburger in hamburgers)
            {
                if (Vector3.Distance(transform.position, hamburger.transform.position) < 2.0f)
                {
                    // destroy hamburger and increase score
                    Destroy(hamburger);
                    score++;
                }
            }
        }

        // check if player has run out of lives
        if (lives <= 0)
        {
            Debug.Log("Game Over!");
            enabled = false;
        }
    }

    // spawn a hamburger at a random position along the y-axis
    void SpawnHamburger()
    {
        float y = Random.Range(-5.0f, 5.0f);
        Instantiate(hamburgerPrefab, new Vector3(10.0f, y, 0.0f), Quaternion.identity);
    }
}