save project

ballgame.py

+import pygame
+
+pygame.init()
+size = width, height = 600,400
+f = pygame.time.Clock()
+speed = [1,1]
+BLACK = 0,0,0
+
+screen = pygame.display.set_mode((600,400))
+pygame.display.set_caption("Pygame壁球")
+
+ball = pygame.image.load("pyg02-ball.gif")
+ballrect = ball.get_rect()
+
+while True:
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            exit()
+    ballrect = ballrect.move(speed[0],speed[1])
+    if ballrect.left < 0 or ballrect.right > width:
+        speed[0] =- speed[0]
+
+    if ballrect.top < 0 or ballrect.bottom > height:
+        speed[1] =- speed[1]
+
+    screen.fill(BLACK)
+    screen.blit(ball,ballrect)
+    pygame.display.update()
+    f.tick(400)
+    
+    
\ No newline at end of file