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import pygame#游戏
import sys#系统(不需要)
import time#时间
import random#随机

pygame.init()

screen = pygame.display.set_mode((600,320))#创建屏幕
pygame.display.set_caption("pvz")#设置名字

def rect(s = screen,c1=0,c2=0,c3=0,xfg=0,yfg=0,b1 = 20,b2 = 20):
    pygame.draw.rect(s,(c1,c2,c3),(xfg,xfg,b1,b2))

quit = True
screen.fill((0,255,0))

clock = pygame.time.Clock()
mouse_down_x, mouse_down_y = pygame.mouse.get_pos()

def f_g():
    pygame.draw.rect(screen,(0,255,255),(mouse_down_x,mouse_down_y,20,20),(0))
while quit:
    for event in pygame.event.get():
        
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
            
        if event.type == pygame.MOUSEBUTTONDOWN:#鼠标事件
            mouse_down_x, mouse_down_y = event.pos#读取鼠标事件,位置
            pygame.draw.rect(screen,(0,0,255),(mouse_down_x,mouse_down_y,10,10),(0))
            print(mouse_down_x,'   ',mouse_down_y)
            f_g()
    clock.tick(25)
    pygame.display.update()