"""__author__=Zeng"""
import pygame
from random import randint
from math import sqrt
from math import fabs
if __name__ == '__main__':
# 初始化游戏模块
pygame.init()
# 创建窗体
window = pygame.display.set_mode((400, 600))
window.fill((255, 255, 255))
balls = [] # 创建一个列表来存放多个小球
# 游戏运行
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit()
if event.type == pygame.MOUSEBUTTONDOWN:
# 鼠标点下事件创建小球
ball = {
'color':(randint(0,255), randint(0,255), randint(0,255)),
'r':randint(10,20),
'pos':event.pos,
'x_speed':randint(-2,2),
'y_speed':randint(-2,2)
}
balls.append(ball)
# 屏幕重覆盖
window.fill((255, 255, 255))
# 各个球相对位置判断
for ball in balls:
x,y = ball['pos']
# 遍历其他球
for ball1 in balls:
x1,y1 = ball1['pos']
# 如果两个球相撞，半径大的球吃掉半径小的球，而小球消失
if ball1['pos'] != ball['pos'] and sqrt((x-x1)**2+(y-y1)**2) < (ball['r']+ball1['r']):
# 球半径大的吸收半径小的，将小球销毁
if ball['r'] >= ball1['r']:
ball['r'] += ball1['r']
# 如果球的半径过大，将其销毁，改变为初始的任意球
if (x-ball['r'] <= 0 or x+ball['r'] >= 400) or (y-ball['r'] <= 0 or y+ball['r'] >= 600):
ball['r'] = randint(10,20)
balls.remove(ball1)
x_speed = ball['x_speed']
y_speed = ball['y_speed']
x += x_speed
y += y_speed
# 越界判断，越界改变方向轴速度
if x > 400 - ball['r']:
x = 400 - ball['r']
ball['x_speed'] = 0 - ball['x_speed']
elif x < ball['r']:
x = ball['r']
ball['x_speed'] = 0 - ball['x_speed']
if y > 600 - ball['r']:
y = 600 - ball['r']
ball['y_speed'] = 0 - ball['y_speed']
elif y < ball['r']:
y = ball['r']
ball['y_speed'] = 0 - ball['y_speed']
pygame.draw.circle(window,ball['color'],(x,y),ball['r'])
# 更新球坐标
ball['pos'] = x,y
pygame.time.delay(10)
pygame.display.flip()
