Gamen3/Assets/Scripts/Terrain/OrbManager.cs

using System.Collections;
using UnityEngine;
using UnityEngine.UIElements;

public class OrbManager : MonoBehaviour
{
    public GameObject prefab;
    public int orbsToSpawn;
    private int orbsSpawned;
    public int spawnRadius;

    private GameObject player;

    public IEnumerator StartSpawn()
    {
        player = GameObject.Find("Player");
        orbsSpawned = 0;

        yield return new WaitForSeconds(5);
        while (orbsSpawned < orbsToSpawn)
        {
            TrySpawnOrb();
        }
    }

    void TrySpawnOrb()
    {
        float xRadius = UnityEngine.Random.Range(-spawnRadius, spawnRadius);
        float zRadius = UnityEngine.Random.Range(-spawnRadius, spawnRadius);

        Vector3 randomRadiusVector = new Vector3(xRadius, 0, zRadius);
        Vector3 rayStart = player.transform.position + Vector3.up * 300 + randomRadiusVector;

        if (Physics.Raycast(rayStart, Vector3.down, out RaycastHit hit, 600f))
        {
            if (hit.point.y < OrbData.maxHeight && hit.point.y > OrbData.minHeight)
            {
                UnityEngine.Object.Instantiate(prefab, hit.point + new Vector3(0f, 0.75f, 0f), Quaternion.identity);
                orbsSpawned++;
            }
        }
    }
}