Scratch

So basically, what is 'proper' format for a Scratch Program? (I know, I know, whatever works, right?) But there must be some basic standard that works well, and can be used as a template or guideline for a simple program.

For example:

When Flag clicked: (this script may be needed in several/all sprites and possibly the stage)
.set all default variables to zero (or possibly one(1) for true/false booleans)
.set default starting position of all sprites (and graphic for background, as needed)


For a simple "Cut the deck" card game, where its a player versus the computer, a simple random number generator works well.

Create a sprite named Deck
create a variable named SelectRndCard

When 'Deck' clicked
set [SelectRndCard] to (pick random (1) to (13))
if <(selectRndCard)=1>
.switch to costume [card1]
else
.if <(selectRndCard)=2>
..switch to costume [card2]
.else
..if <(selectRndCard)=3>
...switch to costume [card3]
..else

This gets very large if there were 52 cards to choose from. Can ARRAYS be used in SCRATCH?

Could BROADCAST be used? for example
if <(selectRndCard)=1>
broadcast [card1wasSelected]
else if <(selectRndCard)=2>
broadcast [card2wasSelected]
else if...

OK, that gets really big, too. I know I'm kinda rambling on incoherently, just thinking out loud...

So, any ideas on a standardized format for programming a simple card game? I have a working 'Cut the Deck' program with just 5 random numbers, and player vs AI, but its pretty big already, with just 5 cards... So I'm open to any suggestions.

Thanks!

~Tony