python-pygame的觸碰方法

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 1 #!/usr/bin/env python 2 # -*- coding:utf-8 -*-  3 # Author: ss 4  5 import pygame 6 import sys 7 import random 8 import math 9 10 11 class Ball(pygame.sprite.Sprite):12     def __init__(self, image, position, speed, bg_size):13         pygame.sprite.Sprite.__init__(self)14         self.image = pygame.image.load(image).convert_alpha()15         self.rect = self.image.get_rect()16         self.rect.left, self.rect.right = position17         self.speed = speed18         self.width, self.height = bg_size[0], bg_size[1]19 20     def move(self):21         self.rect = self.rect.move(self.speed)22 23         if self.rect.right < 0:24             self.rect.left = self.width25         if self.rect.left > self.width:26             self.rect.right = 027         if self.rect.bottom < 0:28             self.rect.top = self.height29         if self.rect.top > self.height:30             self.rect.bottom = 031 32 def collide_check(item,target):33     col_balls = []34     for each in target:35         distance = math.sqrt(math.pow((item.rect.center[0] - each.rect.center[0]), 2) + 36                              math.pow((item.rect.center[1] - each.rect.center[1]), 2))37         if distance <= (item.rect.width + each.rect.width) / 2:38             col_balls.append(each)39     return col_balls40 41 42 def main():43     pygame.init()44 45     ball_image = ‘gray_ball.png‘46     bg_image = ‘background.png‘47 48     bg_size = width, height = 1024, 68149     screen = pygame.display.set_mode(bg_size)50     pygame.display.set_caption(‘我的滾動的球 -s.s‘)51     background = pygame.image.load(bg_image)#.convert_alpha52 53     balls = []54 55 56     for i in range(5):57         position = random.randint(0, width - 100), random.randint(0, height - 100)58         speed = [random.randint(-10, 10), random.randint(-10, 10)]59         ball = Ball(ball_image, position, speed, bg_size)60         while collide_check(ball,balls):61             ball.rect.left, ball.rect.right = random.randint(0, width - 100), random.randint(0, height - 100)62         balls.append(ball)63 64 65     clock = pygame.time.Clock()66 67     running = True68 69     while running:70         for event in pygame.event.get():71             if event.type == pygame.QUIT:72                 sys.exit()73 74         screen.blit(background, (0, 0))75 76         for each in balls:77             each.move()78             screen.blit(each.image, each.rect)79 80         for i in range(5):81             item = balls.pop(i)82             if collide_check(item, balls):83                 item.speed[0] = -item.speed[0]84                 item.speed[1] = -item.speed[1]85             balls.insert(i, item)86 87         pygame.display.flip()88 89         clock.tick(50)90 91 92 if __name__ == "__main__":93     main()

 

python-pygame的觸碰方法