Randomly Generating combined prefabs

Unity Engine
1

Hello everyone,

I am having trouble trying to figure out a way to generate a combined block from two random prefabs. There will be 8 different numbered blocks and if I had to create each combined prefab instead of randomly generating from the 8 numbered squares, I would end up with 140 combined prefabs. Before I go about this, I wanted to see if there was any C# code I could write to do this.

I have 8 numbered squares. Each prefab would display and store 1 number. Then two of the numbered blocks would spawn on screen.

Examples of how the blocks would spawn.

[1][4]
[6][3]
[2][2]
[5][4]

Hope this is enough information.

2

if I understand correctly, you want a model of any two prefabs to be a single object with a single mesh?

If that’s the case, you can pick those prefabs you want to be merged and create a new game object with combined meshes of those picked prefabs.

Then again, I maybe didn’t understand the question correctly, sorry if that’s the case.

3

If I understood you correctly, this should be pretty easy.

Step 1: Attach this script to the camera.
Step 2: Get a reference to the prefabs. You can assign them in the inspector or use ressources.load()

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MyBoxBuilder : MonoBehaviour
{
    public List<GameObject> MyPrefabs;

    List<GameObject> Column1;
    List<GameObject> Column2;

    void Start()
    {
        DoLists();
        BuildBoxes();
    }

    void DoLists()
    {
        Column1 = new List<GameObject>(MyPrefabs);
        Column2 = new List<GameObject>(MyPrefabs);
    }

    void BuildBoxes()
    {


        for (int x = 0; x < 4; x++)
        {
            GameObject prefab = GetRandomBox(ref Column1);

            GameObject nextBox = Instantiate(prefab) as GameObject;
            nextBox.transform.position = new Vector3(0, x * 2, 0);

        }

        for (int x = 0; x < 4; x++)
        {
            GameObject prefab = GetRandomBox(ref Column2);

            GameObject nextBox = Instantiate(prefab) as GameObject;
            nextBox.transform.position = new Vector3(2, x * 2, 0);

        }
  
    }

    GameObject GetRandomBox(ref List<GameObject> column)
    {
        System.Random rnd = new System.Random();
        GameObject found = column[rnd.Next(column.Count)];
        column.Remove(found);
        return found;
    }

}

I hope this helps, and keep on creating!

4

This certainly has helped and the code worked perfectly.

I am not sure that the script should be attached to the camera if I am trying to instantiate the combined blocks as well as add other logic to the new blocks. I am going to want each new blocks to instantiate one at a time and drop to the bottom of a board similar to Tetris.

I have followed a Tetris clone tutorial and think I can handle most of the game.

5

Because the script does not use the gameObject it is attached to, it does not really matter where you attach it.

Any questions left? For timing (“one at a time”) I would recommend using a coroutine.