• We are going to save our work for today into the PowerPoint below.

To download the PowerPoint by clicking on the image below



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Save your PowerPoint as 'Pygame'

Setting up Pygame

Using the code template

• In the Powerpoint you have just downloaded and saved there is a slide containing the text for our coding template.

• Copy the text into Thonny and then run your code.

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• When you run your code you should see a game window appear that is 640 by 480 like the example below.

Can you work out how to change the screen size to 1024 by 768 ?

When we want to draw something in pygame we have to use the screen co-ordinates.

Unlike programs like Scratch, Pygame and most game engines have the origin for their co-ordinates (x = 0 , y = 0) at the top left hand corner of the screen.

You can see here in our image above that a pixel, has been placed at the co-ordinates x = 30 , y = 40 which we would write (30,40) from the top left hand corner of the screen.

Using that basic understanding let's see if we can draw a line.

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Drawing a line:

In order to draw a line we need the co-ordinates for the start of the line and the co-ordinates for the end of the line. We are going to start in the top left corner so thats easy it will be (0,0) and we are going to draw a line to the co-ordinates we used above (30,40)

This is the function we need to use in pygame to draw a line:

pygame.draw.line(Where?,color?,(start x? start y?) (end x?, end y?) line thickness?)

So lets fill it in with the co-ordinates we mentioned above (0,0)and (30,40) and we will use the colour green and a line thickness of 2

pygame.draw.line(screen, green, (0,0), (30,40), 2)

Look at the image below to see where to put this line of code in your template. hint: it goes between the lines that say 'your code starts here' and 'your code ends here'.

Run your code and you should get a small geen line drawn from the corner of your screen?

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Can you draw a longer thicker line?

Can you draw another line that starts where your fist line ends?

Can you draw a shape like a triangle or a square?

Drawing a rectangle:

In order to draw a rectangle we only need the co-ordinates for the top left hand corner of the rectangle and then the height and width in pixels.

pygame.draw.rect(screen, green, (30,40,50,20))

When you run your code it should look like this:

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Can you draw a square?

Can you use a different colour?

Can you complete the next task it might seem familiar?

Can you draw the Microsoft logo?

Using the rectangle command and the line command for the white cross in the middle?

Summing it all up

Lets look at the learning outcomes and decide which one best describes our current level of understanding :

Tick the one you feel is closest to your level