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So will come back again.

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Next thing that we have to address is something that is actually quite important for this particular

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game.

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Here is the situation that we have when we produce a new title and they give it the right Fauntleroy

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take size.

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And most importantly we give it the right title the right counter on it which is shown in here.

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We have to somehow have a mechanism where we can explore this value simply because later on in the game

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and I can click on tile like this one and then that one will have to be able to compare the values in

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them and make sure they are of the same type or the same value is present on both of them.

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Now you could simply assume that all we could actually read the value on the label.

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But I want to suggest a better solution and that is why subclassing the label to store this information

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summary internally.

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And the reason I want to do that is simply because you may not be only dealing with things such as labels

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that actually show their values.

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Maybe you would be working with something like a UI image that doesn't have a value that you can't read.

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So it's better if you actually have a subclass that can store this information.

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Now let me show you how we are going to do that in order to do it.

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I have to change some parts of my code and that's something I warned about at the beginning that one

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is that by the time we will be changing the code to get to where we want to get simply because that

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is how you work as a developer you don't really know everything right off the beginning as you go along.

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You will find different things that you have to do.

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So to do that I'm going to go in here and get myself and you file this one.

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I'm going to make it a subclass of you I Lavan.

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And I'm actually going to call it my label.

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So it's a subclass of a label in swift language of course and it is called My label and in my labor

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I'm going to go ahead and say I have a few prompters or a few attributes in here.

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One of them is something I'm going to call internal numbers and that's going to be an integer and that

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integer is going to be an optional explicitly wrap optional.

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And then I'm going to have to a static variable one of them is a static variable let's call it question.

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And that's going to be showing us a question mark.

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And the other one is going to be a static Larry again and I'm going to call this one a smile and I will

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show you why I'm adding these to in just a second.

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So this one is going to show me an emoji of a smart and if you're wondering on a macro machine you can

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press control command on the spacebar to get this emoji window.

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So I'm going to get that one.

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Now let's see why we have all of these.

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So the internal number is stores the value of the time.

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So that's quite easy to understand that we need to somehow restore the value and then later compare

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them against each other compare against the other.

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So that's about that.

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Now I know in my iPad simulator right now we can see all the numbers but obviously that's not how the

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game is going to be played.

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The game will be played by all of these tiles to be flipped.

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And as they are flipped I want to see a question mark on them.

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So the user has to guess what's the number behind them.

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So that is going to be the default presentation of all tiles.

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And finally if I tapped on two similar tiles and I found them I want to be able to see this one.

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So smile is the final result when we match times.

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So that's about it.

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Now let me take you back to the very original design of the RPG after they have actually developed before

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and show you that in practice.

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So when the app launches we see all the question marks.

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If we tap on any two of them we see the internal number and I got lucky and I got most of them to show

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me the slides Let me show you another one so the entire number is zero.

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The other number is two and they all flip back to question marks.

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And if I find another one of the zero or two I can actually match them against each other three and

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four.

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And that is three and three.

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And if we find them I want to see a little smile.

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Guess where I have the internal number to remember what number I need.

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The question was to show by the fourth and the smile to show in case I found something.

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Now we have this cause obviously we haven't used it anywhere.

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So let's go ahead and use it in our actual code.

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And then what of your controller.

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I didn't hear.

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I'm going to go ahead and see where I'm going to make the toilets instead of them making tiles of the

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type I label.

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I'm actually going to make them by my label type.

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I'm using my leave it is going to be identical to using a label simply because my left label is a subclass

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of you I label.

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And because of that I can still use it in its fifth frame and I can actually use the font text and I

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mean almost everything stays intact except for one thing and that is all I have to store the value that

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they show on each of them inside a property called internal number.

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So I'm going to go in here and say you are going to show this slide your counter on every tide and that

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is the number we need to store.

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So I'm going to go ahead and say Hi Dot internal number becomes counter.

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So we store the value and then of course we show it there.

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00:05:24,500 --> 00:05:29,240
You could either show counter again or if you wanted to you could actually show the tiles that internal

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number and since entire number is an optional value.

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I have to make sure that I explicitly wrap it.

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So I'll wrap it to show me the actual value and if I run the application we should be able to see the

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exact same thing as if you had before but now we have a little bit of more confidence as to what's happening.

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For instance this tile number five it is showing 5 and some internally it is storing the value of 5.

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So that is really going to help us in the future upcoming things that we have to do.

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So just keep it up to here.

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In this is and we added the my label class and we use the my label class to populate our titles and

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let's move on to our next lesson.