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In this video we'll see how we can print out some data about our game!
Cards Map
mapOf(0 to "A", 1 to "2", 2 to "3" , 3 to "4", 4 to "5", 5 to "6", 6 to "7", 7 to "8", 8 to "9", 9 to "10", 10 to "J", 11 to "Q", 12 to "K")
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[MUSIC]
0:00
[SOUND] We're all setup and
ready to move on to implementing the UI.
0:04
The only downside is that we don't
know even know if this works or not.
0:08
We should probably test it, but
before we get to writing a test for
0:12
the whole game, let's start with just
being able to print out the game state.
0:16
Over in our GameModel class,
0:21
let's add a function at the very
bottom named debugPrint().
0:23
This function will print out important
information about our GameModel so
0:29
we can see what's going
on behind the scenes.
0:34
Inside this function let's start by simply
printing out the top card in the deck.
0:37
s-o-u-t, tab, for println.
0:42
And then deck.cardsInDeck.last().
0:44
Then let's head over to our App.kt
file and set up our GameModel.
0:51
Remember, since our GameModel is
a singleton, we can just access it.
0:56
So let's start by resetting the game.
1:01
GameModel.resetGame(), and
then let's see what the top card is.
1:04
GameModel.debugPrint().
1:09
Finally, let's run the app and
see what happens.
1:12
And it looks like the top card
in my deck is the four of clubs.
1:18
Cool, and notice that since our
card class is a data class,
1:23
we've got a better two string
function than we normally would.
1:27
But you know what?
1:31
We can do a lot better than this for
our toString function.
1:32
Let's head over to our Card class and
see how.
1:36
First, let's use control+o to
bring up the override window.
1:42
And then let's override
the toString function.
1:46
And let's make it return
an empty string for now.
1:50
Next, we need to add our
card's value to our string.
1:55
A great way to do this in
is with string templates.
1:58
String templates are basically just a way
to add code and inside our strings.
2:02
Inside this empty string, let's add
our card's value by typing $value.
2:08
Now, when this code runs,
it will print out the value of our card.
2:16
So let's add a space and
then add our card suit.
2:20
$suit, and then do the same thing for
the face up property, $faceUp.
2:23
Then let's run our app again.
2:30
And now my top card is the seven of clubs.
2:33
All right,
now let's take this one step further.
2:37
I'm tired of looking at card values when I
really just want to know what card it is.
2:40
To do this, let's make a map
mapping all the card values
2:46
to the cards those values represent.
2:51
And let's make it as
a package scope variable
2:53
just in case we want to
use it from another class.
2:56
Right below our blackSuits variable,
2:59
let's create a new immutable
variable named cardsMap.
3:02
And let's set it equal to
what's on the teacher's notes.
3:06
It's kind of a lot of typing.
3:11
Now, instead of passing in value,
let's pass in cardsMap.get(value).
3:14
Next, to make it work,
we just need to add brackets around it.
3:24
We can't leave them off this time.
3:28
Then, telling us that we can replace
the get call with the indexing operator.
3:34
So let's hit ALT+Enter, and looks good.
3:40
Now, let's run the app and we should
start to see some of the royal cards.
3:46
But it looks like I got a ten of diamonds.
3:53
So let's try again, and
there we go, the ace of spades.
3:55
In the next video, we'll see what
we can do about our suit parameter.
3:59
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