save project

d.py/main.py

+import pygame
+import sys
+from pygame.locals import *
+from random import *
+class Ball(pygame.sprite.Sprite):
+    def __init__(self,image,position,speed,bg_size):
+        pygame.sprite.Sprite.__init__(self)
+        self.image = pygame.image.load(image).convert_alpha()
+        self.rect = self.image.get_rect()
+        self.rect.left,self.rect.top = position
+        self.speed = speed
+        self.width,self.height = bg_size[0],bg_size[1]
+    def move(self):
+        self.rect = self.rect.move(self.speed)
+        if self.rect.right < 0:
+            self.rect.left = self.width
+        elif self.rect.left > self.width:
+            self.rect.right = 0
+        elif self.rect.bottom < 0:
+            self.rect.top = self.height
+        elif self.rect.top > self.height:
+            self.rect.bottom = 0
+def main():
+    pygame.init()
+    ball_image = "gray_ball.png"
+    bg_image = "background.png"
+    running = True
+    bg_size = width,height = 1024,681
+    screen = pygame.display.set_mode(bg_size) 
+    pygame.display.set_caption("Play the ball - Demo")
+    background = pygame.image.load(bg_image).convert_alpha()
+    balls = []
+    for i in range(5):
+        position = randint(0,width-100),randint(0,height-100)
+        speed = [randint(-10,10),randint(-10,10)]
+        ball = Ball(ball_image,position,speed,bg_size)
+        balls.append(ball)
+    clock = pygame.time.Clock()
+    while running:
+        for event in pygame.event.get():
+            if event.type == QUIT:
+                sys.exit()
+        screen.blit(background,(0,0))
+        for each in balls:
+            each.move()
+            screen.blit(each.image,each.rect)
+        pygame.display.flip()
+        clock.tick(30)
+if __name__ == "__main__":
+    main()
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