如何在pygame中实现重启功能？

如何解决如何在pygame中实现重启功能？

import pygame
from pygame.locals import *

pygame.init()

screen_width = 600
screen_height = 500


fpsClock = pygame.time.Clock()
screen = pygame.display.set_mode((screen_width,screen_height))
pygame.display.set_caption('Pong')


#define font
font = pygame.font.SysFont('None',30)


#define game variables
margin = 50
cpu_score = 0
player_score = 0
fps = 90
live_ball = False
winner = 0
speed_increase = 0


#define colours
bg = (12,91)
white = (241,185,0)
ball_color = (168,43,17)
bar_color = (10,106,86)

def draw_board():
    screen.fill(bg)
    pygame.draw.line(screen,white,(0,margin),(screen_width,2)



def draw_text(text,font,text_col,x,y):
    img = font.render(text,True,text_col)
    screen.blit(img,(x,y))


class paddle():
    def __init__(self,y):
        self.x = x
        self.y = y
        self.rect = Rect(x,y,20,100)
        self.speed = 5
        self.ai_speed = 5

    def move(self):
        key = pygame.key.get_pressed()
        if key[pygame.K_UP] and self.rect.top > margin:
            self.rect.move_ip(0,-1 * self.speed)
        if key[pygame.K_DOWN] and self.rect.bottom < screen_height:
            self.rect.move_ip(0,self.speed)

    def draw(self):
        pygame.draw.rect(screen,bar_color,self.rect)

    def ai(self):
        #ai to move the paddle automatically
        #move down
        if self.rect.centery < pong.rect.top and self.rect.bottom < screen_height:
            self.rect.move_ip(0,self.ai_speed)
        #move up
        if self.rect.centery > pong.rect.bottom and self.rect.top > margin:
            self.rect.move_ip(0,-1 * self.ai_speed)



class ball():
    def __init__(self,y):
        self.reset(x,y)


    def move(self):

        #check collision with top margin
        if self.rect.top < margin:
            self.speed_y *= -1
        #check collision with bottom of the screen
        if self.rect.bottom > screen_height:
            self.speed_y *= -1
        if self.rect.colliderect(player_paddle) or self.rect.colliderect(cpu_paddle):
            self.speed_x *= -1

        #check for out of bounds
        if self.rect.left < 0:
            self.winner = 1
        if self.rect.left > screen_width:
            self.winner = -1

        #update ball position
        self.rect.x += self.speed_x
        self.rect.y += self.speed_y

        return self.winner


    def draw(self):
        pygame.draw.circle(screen,ball_color,(self.rect.x + self.ball_rad,self.rect.y + self.ball_rad),self.ball_rad)


    def reset(self,y):
        self.x = x
        self.y = y
        self.ball_rad = 8
        self.rect = Rect(x,self.ball_rad * 2,self.ball_rad * 2)
        self.speed_x = -4
        self.speed_y = 4
        self.winner = 0# 1 is the player and -1 is the cpu


#create paddles
player_paddle = paddle(screen_width - 40,screen_height // 2)
cpu_paddle = paddle(20,screen_height // 2)

#create pong ball
pong = ball(screen_width - 60,screen_height // 2 + 50)


#create game loop
run = True
while run:

    fpsClock.tick(fps)

    draw_board()
    draw_text('cpu: ' + str(cpu_score),15)
    draw_text('Sihu: ' + str(player_score),screen_width - 100,15)
    draw_text('BALL SPEED: ' + str(abs(pong.speed_x)),screen_width // 2 - 100,15)


    #draw paddles
    player_paddle.draw()
    cpu_paddle.draw()

    if live_ball == True:
        speed_increase += 1
        winner = pong.move()
        if winner == 0:
            #draw ball
            pong.draw()
            #move paddles
            player_paddle.move()
            cpu_paddle.ai()
        else:
            live_ball = False
            if winner == 1:
                player_score += 1
            elif winner == -1:
                cpu_score += 1


    #print player instructions
    if live_ball == False:
        if winner == 0:
            draw_text('CLICK ANYWHERE TO START',160,screen_height // 2 -0)
        if winner == 1:
            draw_text('YOU scoreD!',220,screen_height // 2 -100)
            draw_text('CLICK ANYWHERE TO START',screen_height // 2 -0)
        if winner == -1:
            draw_text('cpu scoreD!',screen_height // 2 -0)



    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
        if event.type == pygame.MOUSEBUTTONDOWN and live_ball == False:
            live_ball = True
            pong.reset(screen_width - 60,screen_height // 2 + 50)



    if speed_increase > 500:
        speed_increase = 0
        if pong.speed_x < 0:
            pong.speed_x -= 1
        if pong.speed_x > 0:
            pong.speed_x += 1
        if pong.speed_y < 0:
            pong.speed_y -= 1
        if pong.speed_y > 0:
            pong.speed_y += 1


    pygame.display.update()

pygame.quit()

我在YOUTUBE上得到了代码 并稍微编辑一下代码 但我没有添加重启代码 如何在pygame中实现重启功能？ 当玩家在游戏中获得 5 分时，我只想结束游戏。 并想让游戏重新开始。 游戏结束后，玩家可以通过按钮重新开始游戏。

解决方法

让循环拥有自己的方法，从 main() 运行中调用它，当游戏结束并结束时，让 main() 询问用户是否想再次玩，如果是，请回想将所有内容设置为默认值后的主循环

或

只需将再次询问的部分清除并重新初始化所有变量作为默认值，如果用户想要再次播放，则让循环

,

要重新开始，您需要重置在游戏过程中发生变化的所有变量。编写一个将所有对象和变量设置为其初始状态的函数：

def reset():
    global player_paddle,cpu_paddle,pong 
    global cpu_score,player_score  
    global live_ball,winner,speed_increase     

    player_paddle = paddle(screen_width - 40,screen_height // 2)
    cpu_paddle = paddle(20,screen_height // 2)
    pong = ball(screen_width - 60,screen_height // 2 + 50)
    cpu_score = 0
    player_score = 0
    live_ball = False
    winner = 0
    speed_increase = 0

当您想重新启动游戏时调用该函数。