Unity 3D Game Development by Example

Time for action - ID the cards

Let's revisit our card-creation code and give each card an ID number. We'll use that number to detect matches.

1. In the BuildDeck function, add this line:

   function BuildDeck()
   {
   var totalRobots:int = 4; // we've got four robots to work with
   var card:Object; // this stores a reference to a card
   var id:int = 0;
   

2. Look a little further down the code. Pass the id value to the Card class with each robot and missing body part card, and then increment the ID number:

   card = new Card("robot" + (i+1) + "Missing" + theMissingPart, id);
   aCards.Add(card);
   card= new Card("robot" + (i+1) + theMissingPart,id);
   aCards.Add(card);
   id++;
   

3. Add id as a property of the Card class. Accept id as an argument in the Card class constructor function, ...