Help with spawning prefabs

Asset & Content Management
1

Hello, I completed the Rolling A Ball tutorial, and I was wondering how can I do to spawn another prefab pickup after picking up one before. The mechanic is similar as in the Snake games, where you “eat” or collect a pick up and then another one appears in a random location.

This is my first post in this awesome comunity, I’ll wait your answers and thank you!

2

Welcome to the Unity Forum.

Instead of setting the active state of the cubes to false when the ball collide with them you could simply move them to a random position on collision.

This is based on the Roll-a-ball tutorial:

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class PlayerController : MonoBehaviour
{

  public float speed;
  public Text countText;
  public Text winText;
  public float spawnAreaCenterX;
  public float spawnAreaCenterZ;
  public float spawnRadius = 5;

  private Rigidbody rb;
  private int count;

  void Start()
  {
  rb = GetComponent<Rigidbody>();
  count = 0;
  SetCountText();
  winText.text = "";
  }

  void FixedUpdate()
  {
  float moveHorizontal = Input.GetAxis("Horizontal");
  float moveVertical = Input.GetAxis("Vertical");

  Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);

  rb.AddForce(movement * speed);
  }

  void OnTriggerEnter(Collider other)
  {
  if (other.gameObject.CompareTag("Pick Up"))
  {
  float xRandomOffset = Random.Range(-spawnRadius, spawnRadius);
  float zRandomOffset = Random.Range(-spawnRadius, spawnRadius);
  float xSpawnPosition = spawnAreaCenterX + xRandomOffset;
  float zSpawnPosition = spawnAreaCenterZ + zRandomOffset;
  other.transform.position = new Vector3(xSpawnPosition, other.transform.position.y, zSpawnPosition);
  count = count + 1;
  SetCountText();
  }
  }

  void SetCountText()
  {
  countText.text = "Count: " + count.ToString();
  if (count >= 12)
  {
  winText.text = "You Win!";
  }
  }
}

This works by setting the spawnArea Center X and Z coordinate in the inspector followed by a “radius” from the spawnArea Center. A random Offset is calculated for both x and z and applied to the “other” object as a vector3 position.