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@aaronchall
Created March 20, 2020 19:49
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"""
Using Pygame, provided requirements with Nix, make a smiley take
a random walk around the display
Put a smiley.png in the same folder, and execute with:
python -m pygame_demo
"""
import pygame
from pygame import locals as ls
from random import normalvariate, randint
from time import sleep
class App:
def __init__(self):
self.image = pygame.image.load("smiley.png")
self._running = True
self._display_surf = None
self.size = self.width, self.height = 640, 400
self.walker_position = (
randint(0, self.width), randint(0, self.height))
def on_init(self):
pygame.init()
self._display_surf = pygame.display.set_mode(
self.size, pygame.HWSURFACE | pygame.DOUBLEBUF)
self._running = True # redundant to __init__
def on_event(self, event):
if event.type == pygame.QUIT:
self._running = False
def on_loop(self):
lateral = round(normalvariate(0, 50))
vertical = round(normalvariate(0, 50))
lateral_pos, vertical_pos = self.walker_position
self.walker_position = (
max(0, min(self.width-250, lateral_pos + lateral)),
max(0, min(self.height-250, vertical_pos + vertical)))
sleep(.1)
def on_render(self):
self._display_surf.blit(self.image, self.walker_position)
pygame.display.flip()
def on_cleanup(self):
pygame.quit()
def on_execute(self):
if self.on_init() == False:
self._running = False
while(self._running):
for event in pygame.event.get():
self.on_event(event)
self.on_loop()
self.on_render()
self.on_cleanup()
def main():
theApp = App()
theApp.on_execute()
if __name__ == "__main__":
main()
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