Random cubes

Questions & Answers
1

so, i have 25 different-coloured cubes, all of the cubes have this c# script attached to them

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

public class RandomPosition : MonoBehaviour {
	public Vector3[] positions;
	void Start () {
	int randomNumber=Random.Range(0,positions.Length);
	transform.position = positions[randomNumber];
	
	}
	
}

this script, every time i start the game, change the position of my cubes in one of the 25 positions that i made, the problem is that a lot of cubes go to the same position, and i don’t want them to be in the same place. How do i do?
please help me, and sorry for my bad english. :')

2

Don’t use 25 scripts. Use 1 script to manage all your objects, then just put them in a collection (array or list) to reference them.

Try this:

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

public class RandomPosition : MonoBehaviour {

    //Both must be same length
    public GameObject[] cubes;
    public List<Vector3> positions = new List<Vector3>();

    void Start() {

        foreach (GameObject cube in cubes) {

            int randomIndex = Random.Range(0, positions.Count);
            cube.transform.position = positions[randomIndex];
            positions.RemoveAt(randomIndex);
        }
    }
}

Instead of an array, use a list, so that every time you pick a position, you can remove it from the list (or make a copy first, if you want to maintain your array). This way you ensure, that a position can only be used once and the random range will always pick a number from within the items that are left.

3

Hello. Try changing the random seed, so it gives real random numbers every time. Put one of these to the first line of Start method:

Random.seed = (int)System.DateTime.Now.Ticks;

or

Random.seed = System.Environment.TickCount;