Raspberry Pi connecting with Joystick in Pygame

Programming Joystick gaming with Raspberry pi

Install joystick using the command below:

sudo apt-get install joystick

after installation you can find file js0 in the directory:

/dev/input/

sudo cat /dev/input/js0

sudo cat /dev/input/js0 | hexdump

Pygame program to read joystick buttons

joystick = pg.joystick.Joystick(0)
joystick.init()

pg.joystick.joystick(0) returns the joystick object and init() function initialize the device values.

 button1 = joystick.get_button(0) retrives the button(0)

below program includes functions to read the keyboard input and mouse inputs. 

Pygame Joystick program:

import pygame as pg
# initialize pygame
pg.init()

# use an image you have (.bmp  .jpg  .png  .gif)
image_file = "ball"
# RGB color tuple for screen background
black = (0,0,0)
# screen width and height
sw = 640
sh = 480
# create a screen
screen = pg.display.set_mode((sw, sh))
# give the screen a title
pg.display.set_caption('image follows mouse click position')
# load an image
# convert() unifies the pixel format for faster blit
image = pg.image.load(image_file).convert()
# get the rectangle the image occupies
# rec(x, y, w, h)
start_rect = image.get_rect()
image_rect = start_rect
running = True
joystick = pg.joystick.Joystick(0)
joystick.init()
while running:
    event = pg.event.poll()
    keyinput = pg.key.get_pressed()
    button3 = joystick.get_button(2)
    button1 = joystick.get_button(0)
    # exit on corner 'x' click or escape key press
    if keyinput[pg.K_ESCAPE]:
        raise SystemExit
    elif event.type == pg.QUIT:
        running = False
    elif keyinput[pg.K_LEFT]:
        image_rect.left = image_rect.left - 1
        image_rect.right = image_rect.right-1
        print "corner coordinates --> (%d, %d, %d, %d)" % \
            (image_rect.left, image_rect.top, image_rect.right,
            image_rect.bottom)

        screen.fill(black)

    elif keyinput[pg.K_RIGHT]:
        image_rect.left = image_rect.left + 1
        image_rect.right = image_rect.right+1
        screen.fill(black)
        screen.blit(image, image_rect)
        pg.display.flip()
    elif keyinput[pg.K_DOWN]:
        image_rect.top = image_rect.top + 1
        image_rect.bottom = image_rect.bottom+1
        screen.fill(black)
        screen.blit(image, image_rect)
        pg.display.flip()

    elif keyinput[pg.K_UP]:
        image_rect.top = image_rect.top - 1
        image_rect.bottom = image_rect.bottom-1
        screen.fill(black)
        screen.blit(image, image_rect)
        pg.display.flip()

    elif button3:
        print("Joystick up pressed")
        image_rect.top = image_rect.top - 1
        image_rect.bottom = image_rect.bottom-1
        screen.fill(black)
        screen.blit(image, image_rect)
        pg.display.flip()

    elif button1:
        print("Joystick down pressed")
        image_rect.top = image_rect.top + 1
        image_rect.bottom = image_rect.bottom+1
        screen.fill(black)
        screen.blit(image, image_rect)
        pg.display.flip()
 

Pygame built with Raspberry Pi & Joystick