Hello,
I hope you'll bear with my low-level programming skills. First, I've
been trying to make an image bounce. Basic, I know, but I can't for
the life of me get it to work. Whenever I run the program, I get a
white window for a few seconds, which then disappears. I think it may
be because I don't know how to implement the run loop via
clock.schedule_interval. It worked perfectly when I was using the
older run loop (i.e. while not win.has_exit ...). If anyone could
please help me, I'd really appreciate it. Thanks!
from random import randrange
import pyglet
from pyglet.gl import *
win = pyglet.window.Window(caption = "Bouncing Ball", width = 640,
height = 402)
background = pyglet.image.load("image1.bmp")
ball = pyglet.image.load("image2.jpg")
ballCoords = [0, 0]
ballSlope = [5, randrange(0, 10)]
def main():
# Allow transparent portions of ball to actually be transparent
glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
def animate(dt):
# Move the object ballSlope[0] to the right and up ballSlope[1]
ballCoords[0] += ballSlope[0]
ballCoords[1] += ballSlope[1]
# If the edge of the ball hits either the right or left edge of the
window
if (ballCoords[0] > win.width - ball.width) or (ballCoords[0] < 0):
ballSlope[0] = -ballSlope[0]
# If the edge of the ball hits either the top or bottom edge of the
window
if (ballCoords[1] > win.height - ball.height) or (ballCoords[1] < 0):
ballSlope[1] = -ballSlope[1]
win.clear()
background.blit(0, 0)
ball.blit(ballCoords[0], ballCoords[1])
pyglet.clock.schedule_interval(animate, 1/60.0)
if __name__ == "__main__":
main()
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