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ball_example.py
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ball_example.py
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import pygame
# NOTE: this appears in many code examples but actually just
# performs a load of module imports so is optional in many
# situations
pygame.init()
SIZE = width, height = (320, 240)
BLACK = (0, 0, 0)
if __name__ == '__main__':
# Creates a graphical window, based on system hardware
# settings
screen = pygame.display.set_mode(SIZE)
speed = [2, 2]
ball = pygame.image.load("intro_ball.gif")
ball_rect = ball.get_rect()
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
ball_rect = ball_rect.move(speed)
if ball_rect.left < 0 or ball_rect.right > width:
speed[0] = -speed[0]
if ball_rect.top < 0 or ball_rect.bottom > height:
speed[1] = -speed[1]
screen.fill(BLACK)
screen.blit(ball, ball_rect)
pygame.display.flip()