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Well, today we are going to do a project using Scratch.

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So the first thing that we must do is go to our account on the internet or the Scratch

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that we have online and open it, obviously.

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The project that we are going to do can be called Apple Catcher because in it, as you

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can see in this example, we are going to catch apple.

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The game must be able to catch the apples which are falling all the time and each time

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that you catch an apple you get a point.

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So it's very easy but you must do, you must create, so you need to be creative if you

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want. Firstly, first of all, what we must do is create a new project and choose the

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background and also the sprites. There are a lot of backgrounds in the library

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but if you want you can upload a photo, a picture that you can have in your

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computer. Another thing that you can also do is change some things in the picture

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that you have chosen. For example you can add some letters or a name or you can

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change for example some color. You can also need to choose the sprites. At least

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you need two the ball and the apple and you can get you can add it from the

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library both of them are in their library but if you want you can use

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another thing you can use other sprite that you can have in the

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library that aren't the ball and really an apple you can use a ball you can use whatever and as

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the same as same as in the scenery you can change its appearance indeed it goes for you to change

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disappearance, using this tool that can change from bitmap to vectorial way.

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As you know, bitmap is a set of pixels and vectorial is different, but both are

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digital imaging and the difference came from the way the

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computer can create the images in its screen. Well, other thing that is

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important that you can choose and change if you want our sounds so you can get

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some from the library of sounds and you can choose the sounds you want and also

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as imagined you can change some values and change the the sounds that you have

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get from the library so when we have we have chosen and we have customized the

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the background the sprites and the sounds of our project we were going to

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to add code. As we have already studied, the flowchart is the first part of the

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design in programming. So it's very useful for you that you draw a flowchart

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for each sprite. In this case we have two sprites which are the

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ball and the apple. And as we have already studied in class, the first step

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in any algorithm is the initial conditions. It's very important that you

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choose the initial conditions, otherwise when you reinitiate your program it

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doesn't work properly so it's very important that you you start to begin

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initiating the position of the ball and the Apple in the in the screen to do

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this the best thing that you can do is using the coordinates of the scratch

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screens. Scratch screens goes from a minus 255 to 255 in a horizontal and in

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vertical directions. So, taking this into consideration, you can know the limits of

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the movements of the objects in your screen. And it's very, very important, as we are going to see.

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well

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I changed the sounds

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well

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so we are going to

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initiate the

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the

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the sprites and to do this you go to the category events and you must choose the

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green flag and taking the coordinates into consideration for the ball and for

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For the apple you have the condition of the initiate programs.

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So after that we can start with the ball.

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Ball is going to be controlled using key arrows.

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indeed the left and the right arrows so it's very easy think in the code

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yes obviously when you push the right arrow you move 20 steps or whatever and when you

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You click and push the left arrow, the same part, if you want that the sense is opposite

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you need to put the sign ball, the symbol, the sign ball minus, the sign of the thing.

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So now you can control the ball, it's very easy.

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And for the apple is a little bit more difficult, not so much, but a little bit more difficult, because you want that the apple falls. It means that you need to change the coordinate, the vertical coordinate.

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And to do this is Y, but in the down direction, so using the sign, using the minus sign.

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And you need to do until the apple touches the floor.

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So you can do repeating this operation.

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And to repeat you can use repeat, the block repeat, or if you want, forever.

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But if you have chosen FOREVER, the problem is that the apple disappears.

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So you need to include in FOREVER a conditional.

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That means that when it touches the edge, it returns to the initial position.

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But if you just only go to the initial position, the horizontal position is always the same.

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So to change the position you can use the average between 200 and minus 200.

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And in this way you can have the ball and its movements under control and good movements

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for the apple.

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And this is all for today, for the next step, as you can see in this tutorial.

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Next day we are going to add something about what happened when the apple touched the ball

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and also how you do a counter.

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I hope you can enjoy this project because I think it's good for your creative and for

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you.

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I'll see you next time