Fill list with gameobject?

Questions & Answers
1

Hello, i’m newbie in unity. I want to fill an list like 4X5 or 5x4 with gems but not instantly smthing like 1 gem per second and when 4X5 is complete stop falling. this is my code. How can i do this?

public class List : MonoBehaviour {
	
	public GameObject gem;

	public List<GameObject> gems = new List<GameObject>();
	
	// Use this for initialization
	void Start () {
		for (int y=0; y<5; y++) {
			for (int x=0; x<4; x++) {

			//	GameObject g =Instantiate(gem, new Vector3(x, y, 0), Quaternion.identity) as GameObject;
			//	gems.Add(g);

			}
		}
	}
	// Update is called once per frame
	void Update () {

		Vector3 fall = new Vector3 (1,2,0);
		gems.Add((GameObject)Instantiate(gem, fall, Quaternion.identity));

	}
}
2

Two issues first: Please format code questions! Select the code you’re pasting, and press the 0101 button.

Secondly, you shouldn’t name your class “List”, as there’s already a built-in class named “List”, and that’ll end up causing confusion.

Now, to solve your problem, the easiest thing would be to use a Coroutine. In essence, they’re methods that you can pause for a certain amount of time (or until an event is finished). You can read about them here.

Your code would be:

public class GemThingy : MonoBehaviour {

    public GameObject gem;
    public List<GameObject> gems = new List<GameObject>();
    bool finishedSpawning;

    void Start() {
        StartCoroutine(SpawnCoroutine());
    }

    private IEnumerator SpawnCoroutine() {
        finishedSpawning = false;
        for (int y = 0; y < 5; y++) {
            for (int x = 0; x < 4; x++) {
                GameObject g = Instantiate(gem, new Vector3(x, y, 0), Quaternion.identity) as GameObject;
                gems.Add(g);
                //Wait for a second before continuing the for-loop
                yield return new WaitForSeconds(1f);
            }
        }
        finishedSpawning = true;
    }

    void Update() {
        if (!finishedSpawning)
            return;

        //Make the gems fall
    }