Deleting an Element from an Array.

Questions & Answers
1

Firstly Im very new at this, I’ve messed with scripting in the past on a small scale, So im no pro at c#.

So Anyways,

I have an array that I have stored a Deck of Cards in. When a new card is created it randomly picks a element from the deck of cards and creates the card.

I guess my first question I need to ask, Is when removing an element from an array how does it reorganize the array. Say the array has a length of 10, If I delete depth 5 of the array, does the rest of the array shrink automatically,as In will the element 6 become 5 and so on. If it doesnt how do I reorganize the array so i dont have a empty element.

Second part of my question is after it creates the card I want to delete that particaluar element of the array so that card can not be created again. how do I delete from an array.

Here is creating my card from the array i want to delete the element of the array that i get from the int drawCard :

	newCard.gameObject.GetComponent<SpriteRenderer>().sprite = arrayOfPairs[drawCard].cardSprites[0];

Here is my whole code :

using UnityEngine;
using System.Collections;

public class testing : MonoBehaviour {


	public GameObject blankCard;

	public MyPairs[] arrayOfPairs;

	public int cardimage;

	int drawCard;

	int handSize = 0;

	int NewCard = 0;

    int deckSize = 9;


	// Use this for initialization
	void Start () {

		while(handSize < 9)
		{

			drawCards();

			handSize++;

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

	void drawCards(){

		GameObject newCard = (GameObject)Instantiate(blankCard);

		newCard.name = ("newCard" + NewCard);

		NewCard++;

            drawCard = Random.Range (0, deckSize);

		newCard.gameObject.GetComponent<SpriteRenderer>().sprite = arrayOfPairs[drawCard].cardSprites[0];


	}

}
2

As indicated the collection structure you really want is a generic List.

Here are some of the calls you should consider using. There are plenty of others, check out the documentation above.

//At the top of your script
using System.Collections.Generic;

// Initialisation
List<Card> cardsInDeck = new List<Card>();

// Adding cards
cardsInDeck.Add(new Card());

//Removing a random card
int index = Random.Range(0,myCard.Count);
Card myCard = cardsInDeck[index];
cardsInDeck.RemoveAt(index));