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Getting Started with rebuilding blackjack from scratch with notes (help requested)

24 Jul

Using the flowchart in the previous post, I’ve started walking through how to build this program.

Step 1: Outline:

 

Hand Constructor

 

Card Constructor

 

            getSuit (method to interpret suit numbers)

 

            getValue(method to interpret value unbers)

 

Deal function

 

Main Function

 

 

 

 

 

Step2: Fleshing out early program (make myHand)

 

//Hand Constructor

var Hand = function(){

this.card1 = deal();

console.log(“card1 is “+this.card1.number+” of “ + this.card1.suit);

this.card2 = deal();

console.log(“card2 is “+this.card2.number+” of “ + this.card2.suit);

};

 

Card Constructor

 

            getSuit (method to interpret suit numbers)

 

            getValue(method to interpret value unbers)

 

Deal function

 

//Main Function

var myHand = new Hand();

 

The main function immediately generates a hand “myHand” for the player.

Going to the Hand constructor, we know that we need two cards, and that they will be made by calling the deal function. I’ve included a console.log to immediately provide feedback showing that the cards have correct properties (simple numbers right now)

 

 

Step3: Generating cards with the ‘Deal’ function

 

//Hand Constructor

var Hand = function(){

this.card1 = deal();

console.log(“card1 is “+this.card1.number+” of “ + this.card1.suit);

this.card2 = deal();

console.log(“card2 is “+this.card2.number+” of “ + this.card2.suit);

};

 

Card Constructor

 

            getSuit (method to interpret suit numbers)

 

            getValue(method to interpret value unbers)

 

//Deal function

var deal = function(){

            var suit = Math.floor(Math.random()*4)+1;

            console.log(“deal function suit: “+suit);

var number = Math.floor(Math.random()*13)+1;

            console.log(“deal function number: “+number);

};

 

//Main Function

var myHand = new Hand();

 

Deal is called twice from the Hand Constructor. We should flesh out the deal function now. This function generates two random numbers (‘suit’ : 1-4) and (‘number’ : 1-13).

As before, I’ve added some console.log statements to make sure this is working correctly. I include a statement about being in the deal function as a check for how the program is walking through its steps.

Problem of Scope: am I making variables with appropriate scope in this function?

 

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Posted by on July 24, 2012 in Codecademy, Coding

 

Tags: , , , , , ,

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