Python Pygame Basic Program

Question

I have been trying to learn pygame the last day or so, and tried to write a basic program that just has a small image of a leaf falling from the top of the screen. Nothing appears when I run it, and I imagine I'm missing something obvious with how I'm doing this. (I can tell this is a very inefficient way of doing this as well, so tips would be appreciated!)

Here's the code:

import pygame
from pygame.locals import *
import random

pygame.init()


class Leaf:
    def __init__(self):
        self.leafimage = pygame.image.load('fallingleaf.jpg').convert()
        self.leafrect = self.leafimage.get_rect()
        xpos = random.randint(0, 640)
        self.leafrect.midtop = (xpos, 0)
    def move(self):
        self.leafrect = self.leafrect.move([0, 1])

def main():
    width= 640
    heigth = 480
    dimensions = (width, heigth)
    screen = pygame.display.set_mode(dimensions)
    pygame.display.set_caption('Some Epic Pygame Stuff')

    clock = pygame.time.Clock()

    leaves = []
    for i in range(5):
        leaves.append(Leaf())

    running = 1
    while running:
        clock.tick(60)

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
            running = 0



        for i in leaves:
            i.move()
            screen.blit(i.leafimage, i.leafrect)


        screen.fill((255, 255, 255))


        pygame.display.flip()





    if __name__ == '__main__': main()

Once you get this working, if you are looking for more advice about how to improve your code, you should ask on codereview.stackexchange.com — SingleNegationElimination
– SingleNegationElimination, Commented Mar 3, 2011 at 5:35

SingleNegationElimination · Accepted Answer · 2011-03-03 05:31:03Z

7

You probably don't want this sequence:

for i in leaves:
    i.move()
    screen.blit(i.leafimage, i.leafrect)


screen.fill((255, 255, 255))


pygame.display.flip()

You draw the leaves, and then fill the entire screen with white, and then show the screen.

fill the screen, then draw the leaves, then flip()

answered Mar 3, 2011 at 5:31

SingleNegationElimination

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2 Comments

Ryan Over a year ago

Thanks! That makes a lot more sense now.

user1108983 Over a year ago

if his answer works, then u should click the checkmark next to his answer.

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