My first Pygame zero attempt

I attended the brilliant #ExaBytes19 on 28th June 2019, among many very good sessions, I went to Jon Witts (@jonwitts) session on PyGame Zero [1]. Pygame zero is meant for Educational use and teaching programming through game development. Impressed with Pygame Zero relative simplicity, I have had a go myself.

The Game!
A Bee buzzes around the screen and a player moves to avoid it; if the bee and player meet the player's image changes and a sneezing sound is produced (I just fancied have a short cute noise). Both the bee and the player characters wrap around the screen.

A very helpful source of advice on getting started on using Pygame can be found at [2]; my example takes the game produced there as a starting point. If you want to explain of what Pygame does previously mentioned page[1] and the page describing the built-in  functions [3], I found a great help.

All the images were PNGs, the player characters were produced using https://www.bitmoji.com/ .  

The game code is shown below; all images have to be put in an image folder and the sounds in a sounds folder.

Liked especially that the image for a character (or Actor) can be changed very easily. Collision detection can be done in a few ways but I selected for simplicity the idea that each image has a rectangle around it and used this say when they meet, as in the example below.

if bee.colliderect(player):

        player_hurt()

	import random
	bee = Actor ('bee')
	bee.pos = 50,50
	player = Actor ('panic')
	player.pos = 750, 750
	HEIGHT = 800
	WIDTH = 800
	def draw():
	screen.clear()
	bee.draw()
	player.draw()
	def update():
	player_update()
	bee_update()
	if bee.colliderect(player):
	player_hurt()
	def player_update():
	if keyboard.right:
	player.pos = (player.x+5, player.y)
	if keyboard.left:
	player.pos = (player.x-5, player.y)
	if keyboard.up:
	player.pos = (player.x, player.y-5)
	if keyboard.down:
	player.pos = (player.x, player.y+5)
	if player.y>HEIGHT+25:
	player.y=25
	if player.y< 25:
	player.y = HEIGHT-50
	if player.x>WIDTH+25:
	player.x=25
	if player.x< 25:
	player.x = WIDTH-50
	def bee_update():
	bee.pos= (bee.x + random.randint(-25,25), bee.y + random.randint(-25,25))
	if bee.y>HEIGHT+25:
	bee.y=25
	if bee.y< 25:
	bee.y = HEIGHT-50
	if bee.x>WIDTH+25:
	bee.x=25
	if bee.x< 25:
	bee.x = WIDTH-50
	def player_hurt():
	player.image='ohno'
	sounds.sneeze.play()
	clock.schedule_unique(player_normal, 1)
	def player_normal():
	player.image='panic'

view raw myfirstsolo2.py hosted with ❤ by GitHub

Code, images, etc are available at: https://github.com/scottturneruon/pygame_tests


As background, the following were interesting and provide further useful information and tips

• Space Asteroids - Pygame Zero http://www.penguintutor.com/projects/docs/space-asteroids-pgzero.pdf
• Pygame Zero Invaders https://www.raspberrypi.org/magpi/pygame-zero-invaders/
• Pygame Zero: SpaceInvaders II https://www.raspberrypi.org/magpi/pygame-zero-space-invaders-ii/

I enjoyed playing with it, thank Jon for sharing this.


Resources

1. Welcome to Pygame Zero https://pygame-zero.readthedocs.io/en/stable/
2. Introduction to Pygame Zero https://pygame-zero.readthedocs.io/en/stable/introduction.html
3. Built-in Objects - Pygame Zero https://pygame-zero.readthedocs.io/en/stable/builtins.html
4. Space Asteroids - Pygame Zero http://www.penguintutor.com/projects/docs/space-asteroids-pgzero.pdf
5. Pygame Zero Invaders https://www.raspberrypi.org/magpi/pygame-zero-invaders/
6. Pygame Zero: SpaceInvaders II https://www.raspberrypi.org/magpi/pygame-zero-space-invaders-ii/

All opinions in this blog are the Author's and should not in any way be seen as reflecting the views of any organisation the Author has any association with. Twitter @scottturneruon