using UnityEngine;
public sealed class PrefabSpawner : MonoBehaviour
{
    [SerializeField] private GameObject prefab;
    private int nextId = 1;
    [ContextMenu("Spawn One")]
    public void SpawnOne()
    {
        if (!Application.isPlaying) { Debug.LogWarning("Enter Play mode first.", this); return; }
        if (prefab == null) { Debug.LogError("Assign a prefab asset.", this); return; }
        GameObject instance = Instantiate(prefab, transform.position, transform.rotation);
        instance.name = "Spawned-" + nextId++;
        Debug.Log(instance.name, instance);
        Destroy(instance, 2f);
    }
}