暂停游戏时，“继续”按钮不起作用

Question

我做了一个你必须躲避物体的游戏。您也可以按p暂停游戏。暂停游戏后，如果您想继续或退出，您将获得一个选项。对我来说，退出按钮正在工作但是继续按钮不起作用。它表示定义unpause（）是代码为暂停按钮启动的位置。

import time
import random

pygame.init()

display_width = 800
display_height = 600

red = (200,0,0)
orange = (255, 165, 0)
yellow = (255, 242, 0)
green = (0,200,0)
blue = (0,0,255)
indigo = (75, 0, 130)
violet = (238, 130, 238)
black = (0,0,0)
white = (255,255,255)


bright_red = (255,0,0)
bright_green = (0,255,0)


car_width = 86

gameDisplay = pygame.display.set_mode((display_width,display_height))
pygame.display.set_caption("Racing Game")
clock = pygame.time.Clock()

carImg = pygame.image.load("download.png")
carImg = pygame.transform.scale(carImg,(100,160))

pause = False

def things_dodged(count):
    font = pygame.font.SysFont(None, 25)
    text = font.render ("Dodged: "+str(count), True, black)
    gameDisplay.blit(text,(0,0))

def things(thingx, thingy, thingw, thingh, color):
    pygame.draw.rect(gameDisplay, color, [thingx, thingy, thingw, thingh])

def car(x,y):
    gameDisplay.blit(carImg, (x,y))

def text_objects(text, font):
    textSurface = font.render(text, True, black)
    return textSurface, textSurface.get_rect()


def message_display(text):
    largeText = pygame.font.Font("freesansbold.ttf",100)
    TextSurf, TextRect = text_objects(text, largeText)
    TextRect.center = ((display_width/2),(display_height/2))
    gameDisplay.blit(TextSurf, TextRect)

    pygame.display.update()

    game_loop()

    time.sleep(2000)


def crash():
    message_display ("YOU CRASHED")

def button(msg,x,y,w,h,ic,ac,action = None):
    mouse = pygame.mouse.get_pos()
    click = pygame.mouse.get_pressed()
    print(click)
    if x + w > mouse [0] > x and y + h > mouse [1] > y:
        pygame.draw.rect(gameDisplay, ac, (x,y,w,h))
        if click[0] == 1 and action != None:
            if action == "play":
                game_loop()

            elif action == "quit":
                pygame.quit()
                quit()


    else:
        pygame.draw.rect(gameDisplay, ic, (x,y,w,h))

    smallText = pygame.font.Font("freesansbold.ttf",20)
    textSurf, textRect = text_objects(msg, smallText) 
    textRect.center = ( (x+(w/2)), (y+(h/2)) )
    gameDisplay.blit(textSurf, textRect)

def quitgame():
    pygame.quit()
    quit

def unpause():
    global pause
    pause = False


def paused():
    while paused:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        gameDisplay.fill(white)
        largeText = pygame.font.Font("freesansbold.ttf",100)
        TextSurf, TextRect = text_objects("PAUSED", largeText)
        TextRect.center = ((display_width/2),(display_height/2))
        gameDisplay.blit(TextSurf, TextRect)


        button ("Continue!",150,450,100,50,green,bright_green,unpause)
        button ("Quit!",550,450,100,50,red,bright_red,"quit")





        pygame.display.update()
        clock.tick(15)




def game_intro():
    intro = True
    while intro:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
        gameDisplay.fill(white)
        largeText = pygame.font.Font("freesansbold.ttf",100)
        TextSurf, TextRect = text_objects("Racing Game", largeText)
        TextRect.center = ((display_width/2),(display_height/2))
        gameDisplay.blit(TextSurf, TextRect)


        button ("GO!",150,450,100,50,green,bright_green,"play")
        button ("QUIT!",550,450,100,50,red,bright_red,"quit")





        pygame.display.update()
        clock.tick(15)



def game_loop():
    global pause
    x = (display_width * 0.45)
    y = (display_height * 0.72)

    x_change = 0

    thing_startx = random.randrange(0, display_width)
    thing_starty = -600
    thing_speed = 7
    thing_width = 100
    thing_height = 100

    thingCount = 1

    dodged = 0


    gameExit = False

    while not gameExit:

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x_change = -5
                if event.key == pygame.K_RIGHT:
                    x_change = 5
                if event.key == pygame.K_p:
                    pause = True
                    paused() 

            if event.type == pygame.KEYUP:
                if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                    x_change = 0

        x += x_change

        gameDisplay.fill(white)


        things(thing_startx, thing_starty, thing_width, thing_height, black)
        thing_starty += thing_speed
        car (x,y)
        things_dodged(dodged)

        if x > display_width - car_width or x < -10:
            crash()


        if thing_starty > display_height:
            thing_starty = 0 - thing_height
            thing_startx = random.randrange(0,display_width)
            dodged += 1
            thing_speed += 1
            #thing_width += (dodged * 0.5)


        if y < thing_starty + thing_height:


            if x > thing_startx and x < thing_startx + thing_width or x + car_width > thing_startx and x + car_width < thing_startx + thing_width: 
                crash()

        pygame.display.update()
        clock.tick(100)

game_intro()        
game_loop()
pygame.quit()
quit()

Please try to help. I am saying Thank You in advance for all your guy's help.