Kids can code, Elders also can: Create a simple game using Python by M K Premarajan

Author:M K, Premarajan [M K, Premarajan]
Language: eng
Format: epub, pdf
Publisher: UNKNOWN
Published: 2021-02-05T00:00:00+00:00

The screen will be displayed, and when you click the close sign marked by ‘X’ at the top right corner of the screen, the loop will be exited. The program reads the next line ‘pygame.quit()’ function and exits the game. ’pygame.init()’ initializes all ‘pygame’ modules whereas ‘pygame.quit()’ closes all ‘pygame’ modules and quits.

Please note that the word ‘screen’ used is a variable and not a keyword. You can use any variable. We have used the word ‘screen’ for the ease of identification. We can change the colour of our screen by using a method, ‘fill’. Python uses (R,G,B) colour scheme. The maximum saturation a colour can go up to is 255. When all the colours have the maximum saturation of ‘255’, the colour is white and when it is ‘0’, the colour is black.

WHITE = (255,255,255)

BLACK = (0,0,0)

RED = (255,0,0)

GREEN = (0,255,0)

BLUE = (0,0,255)

Other colours are created by a combination of these shades.

The default colour of our ‘screen’ is black. You can change the colour of the screen using a method. A method is almost similar to a function. A method belongs to an object and is called on it. For example, ‘screen.fill’, where ‘screen’ is the object and ‘fill’ is the method. We can change the colour to green by the following command:

screen.fill(0,255,0)

A detailed colour code guide is available at the following site:

https://www.rapidtables.com/web/color/RGB_Color.html

You can choose any colour from the palette, and it will give the RGB colour code. You can experiment with changing the size and colour of the screen.

We can store the colors in variables instead of giving the triplet code every time, to specify colour!

Let us do it! By convention, capital letters are used for variables representing values which do not change.

You can replace the RGB code (0,255,0) with the variable ‘GREEN’ now defined.

Customising the screen

The screen has a default pygame logo and a caption ‘pygame window’. We can change this to our choice. Our idea is to develop the game ultimately as ‘Corona Warriors’. We will, therefore, have a representative logo and caption to our screen. "https://www.flaticon.com" (There are other sites also) provides many free icons which can be downloaded. I have chosen a logo ‘safety-suit’ from the site. I have downloaded it and saved it as ‘safety-suit.png’, in the game directory. You can also choose an icon and save the file in your game folder. Let us go ahead with coding.

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