本文实例为大家分享了pygame实现弹力球及其变速效果的具体代码，供大家参考，具体内容如下

期望：

1.球体接触到框体后反弹

2.设置速度按键，按下后改变球体速度、颜色状态

具体实现：

import pygamefrom pygame.locals import *import sys, randomclass Circle(object): # 设置Circle类属性 def __init__(self): self.vel_x = 1 self.vel_y = 1 self.radius = 20 self.pos_x, self.pos_y = random.randint(0, 255), random.randint(0, 255) self.width = 0 self.color = 0, 0, 0 # 球体颜色速度改变方法 def change_circle(self, number): self.color = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255) # 防止球体速度方向发生改变 if self.vel_x < 0: self.vel_x = -number else: self.vel_x = number if self.vel_y < 0: self.vel_y = -number else: self.vel_y = number # self.vel_x, self.vel_y = number, number 如果仅此句，速度方向会发生改变 def circle_run(self): # 防止球体超出游戏界面框体 if self.pos_x > 580 or self.pos_x < 20: self.vel_x = -self.vel_x if self.pos_y > 480 or self.pos_y < 20: self.vel_y = -self.vel_y self.pos_x += self.vel_x self.pos_y += self.vel_y pos = self.pos_x, self.pos_y pygame.draw.circle(screen, self.color, pos, self.radius, self.width)pygame.init()screen = pygame.display.set_mode((600, 500))# Circle实例circle1 = Circle()while True: for event in pygame.event.get(): if event.type == QUIT: sys.exit() elif event.type == KEYUP: if event.key == pygame.K_1: circle1.change_circle(1) elif event.key == pygame.K_2: circle1.change_circle(2) elif event.key == pygame.K_3: circle1.change_circle(3) elif event.key == pygame.K_4: circle1.change_circle(4) screen.fill((0, 0, 100)) circle1.circle_run() pygame.display.update()

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。