using UnityEngine;

public class CartSpawner : MonoBehaviour
{
    public GameObject cartPrefab;
    public Vector3 spawnAreaCenter;
    public Vector3 spawnAreaSize;
    public float spawnInterval = 10f; // Time (seconds) between spawns
    public int maxCartsInScene = 5;   // Prevent too many carts

    private int currentCarts = 0;

    void Start()
    {
        StartCoroutine(SpawnCartsOverTime());
    }

    System.Collections.IEnumerator SpawnCartsOverTime()
    {
        while (true)
        {
            if (currentCarts < maxCartsInScene)
            {
                Vector3 spawnPosition = GetRandomPositionInArea();
                GameObject newCart = Instantiate(cartPrefab, spawnPosition, Quaternion.identity);
                currentCarts++;

                // When cart is returned/destroyed, decrement the counter
                CartTracker tracker = newCart.AddComponent<CartTracker>();
                tracker.spawner = this;
            }

            yield return new WaitForSeconds(spawnInterval);
        }
    }

    Vector3 GetRandomPositionInArea()
    {
        float x = Random.Range(-spawnAreaSize.x / 2, spawnAreaSize.x / 2);
        float z = Random.Range(-spawnAreaSize.z / 2, spawnAreaSize.z / 2);
        float y = spawnAreaCenter.y;

        return spawnAreaCenter + new Vector3(x, 0f, z);
    }

    public void CartRemoved()
    {
        currentCarts--;
    }
}