PyGame-Intro

This project shows the basic functionality of Pygame where I will show different things of how to create main screen, manage FPS, import game characters and basic movement

Requirements

You only need to install Pygame and you can install it using

pip install pygame

or you can just download the project and install the requirements using requirements.txt by using the command

pip install -r requirements.txt

Basics

Main Screen

First we will draw the main screen and we will define WIDTH, HEIGHT of the screen in pixels and also define COLOR which takes a tuple as an input

import pygame 

WIDTH, HEIGHT = 900, 500
COLOR = (100, 125, 180)

and then we use pygame.display to display our main window

WIN = pygame.display.set_mode((WIDTH, HEIGHT))

Now, we will make a function and name it draw_window, here we will fill our main window with color that we define earlier and update the display. One important thing to notice is that everytime we draw something whether its window or some shapes or assets on window we have to update the the display to apply changes.

def draw_window():
    WIN.fill(COLOR)
    pygame.display.update()

Now we just call this function in our main function in a while loop and make it run for indefinite time by using a boolean run

def main():
  run = True
  while run:
    draw_window()
if __name__ == '__main__':
    main()

Now, we will add the functionality to close this game window. We will use the eventsin pygame and get the even when user clicks the close button.

for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False

Also, this run=False only stops the while loop, to close the actual window we need to add the following outside of the while loop

pygame.quit()

This game window is running continuously and refreshes indefinitely becasue of while loop, and the rate of refreshing the screen is not defined at the moment so it refreshes as fast as your PC can run this while loop and it will be variable for different users depending on the processing power of their PC. To set this screen to refresh every 60 second we can use the time class from pygame

FPS = 60

clock = pygame.time.Clock()

clock.tick(FPS)

We define this in particular order FPS will go on top with other variables, clock is set first in main class and then tick method is called under while loop.