python pygame实现球球大作战

 from random import randint,randrange import pygame from math import sqrt,pi class Ball(object): def __init__(self, center, color, radius, sx, sy): self._center = center self._color = color self._radius = radius self._sx = sx self._sy = sy @property def center(self): return self._center @property def radius(self): return self._radius @radius.setter def radius(self,radius): self._radius = radius def move(self): x, y = self._center[0], self._center[1] x += self._sx y += self._sy self._center = (x, y) # if x + self._radius > 800: #   self._sx = -abs(self._sx) # elif x + self._radius  800: #   self._sy = -abs(self._sy) # elif y +self._radius = 800 or x - self._radius <= 0 or x = 800 or y - self._radius <= 0 or y <= 0: self._sy = -self._sy def draw(self,screen): pygame.draw.circle(screen, self._color, self._center, self._radius, 0) def eat(self, other): a = sqrt((self._center[0] - other.center[0]) ** 2 + (self._center[1] - other.center[1]) ** 2) if a <self._radius + other.radius and self._radius <other.radius: other.radius = self._radius + other.radius self.radius = 0 elif a  other.radius: self._radius = self._radius + other.radius other.radius = 0 def main(): balls = [] pyg<strong style="color:transparent">来源gaodai#ma#com搞@@代~&码*网</strong>ame.init() screen = pygame.display.set_mode([800,800]) pygame.display.set_caption('大球吃小球') c = pygame.time.Clock() running = True while running: for event in pygame.event.get(): if event.type == pygame.QUIT: running = False elif event.type == pygame.MOUSEBUTTONDOWN and \ event.button == 1: color = random_color() radius = randint(10,100) sx, sy = randint(-10,10), randint(-10,10) ball = Ball(event.pos, color, radius, sx, sy) balls.append(ball) refresh(screen,balls) c.tick(20) # 50帧 for ball in balls: ball.move() balls_len = len(balls) for i in range(balls_len): for x in range(balls_len): balls[i].eat(balls[x]) for ball in balls: if ball.radius == 0: balls.remove(ball) pygame.quit() def refresh(screen,balls): bg_color = [255, 255, 255] screen.fill(bg_color) for ball in balls: ball.draw(screen) pygame.display.flip() def random_color(): return [randint(1,255), randint(1,255), randint(1,255)] if __name__ == '__main__': main()