在其中一个功能中，如果按4键，它将结束该功能并返回原始屏幕。此代码将在按下4键时粘贴原始背景，但不允许任何WASD移动，只会重新启动该功能：
Turns = 100 #tried to implement a loop in order to be able to flip between the Player's turn and the Monster's turn
Player_Turn = True#it is the player's turn
while Turns != 0:
for event in pygame.event.get():
if event.type == KEYDOWN:
if Player_Turn == True: #while it is the player's turn
#use the number buttons to attack
if event.key == K_1: #'attack'
TextOnScreen("You attack!", (60, 90), 34) #text appears on the screen for 600 miliseconds
pygame.display.update() #updates screen
pygame.time.delay(700) #delay for the text to appear on screen
MonsterHP = MonsterHP - 2 #takes damage
print("MonsterHP: " + str(MonsterHP))
if MonsterHP <= 0: #monster is defeated
print("The monster is dead!")
TextOnScreen("The Enemy is dead! You win!", (60, 200), 34) #win message
pygame.time.delay(700) #text stays on screen
PlayerHP = PlayerHP #updates global variable
Combat_Mode_Start = False #combat mode ends
PlayerStep = 10 #resets player step value
PlayerSprite.speed = 5 #returns player speed to original value
PlayerSprite.nomove == False #sprite can move again
screen.blit(background, (0,0)) #blits original background
screen.blit(PlayerSprite.image, PlayerSprite.rect) #blits sprite in same position
pygame.display.update() #updates screen
break #breaks loop
return #ends function
Player_Turn = False #ends player's turn
if event.key == K_2: #heal option
PlayerHP = PlayerHP + 10 #player regains health
TextOnScreen("You healed yourself!", (60, 90), 34)
pygame.time.delay(700) #text stays on screen for 700 miliseconds
pygame.display.update() #updates screen
print("PlayerHP: " + str(PlayerHP))
if PlayerHP > 15: #max health
TextOnScreen("You're at full health", (60,115), 34)
pygame.time.delay(700)
PlayerHP = 15 #value is reset to max health
Player_Turn = False #ends player's turn
if event.key == K_3:#'item's option
screen.fill((232,232,232)) #fills the background with the grey
pygame.draw.rect(screen, (255,250,191), [150,50,400,300]) #the yellow box
pygame.draw.rect(screen, (168, 157, 0), [150,50,400,300], 4) #the darker outline
TextOnScreen("No items collected", (160, 70), 36) #no items for the duration of the project
pygame.display.update()
#square that appears on screen listing items - currently empty
pygame.time.delay(1000)#keeps square on screen for 1000 miliseconds
Combat_Mode(MonsterHP, PlayerHP)#screen is redrawn
Player_Turn = False #ends player's turn
if event.key == K_4: #'flee' option - ends Combat Mode and returns to main screen
TextOnScreen("You escaped!", (60, 90), 34) #flee text
pygame.time.delay(900) #text stays on screen for 700 miliseconds
print("Combat Over")
PlayerHP = PlayerHP #updates global variable
Combat_Mode_Start = False #combat mode ends
PlayerSprite.speed = 5 #returns player speed to original value
PlayerSprite.canMove == True #sprite can move again
screen.blit(background, (0,0)) #blits original background
screen.blit(PlayerSprite.image, PlayerSprite.rect) #blits sprite in same position
pygame.display.update()#updates screen
break
return
最初调用该函数的代码：
#the sprite movement in the main portion of the game
while True: #while the screen is up and the program is running
for event in pygame.event.get(): #while an event takes place
if event.type == KEYDOWN and PlayerSprite.canMove: #if a button is pressed and the sprite can move
#actions based on which key is pressed - no diagonal movement
if event.key == K_w: #sprite moves up
PlayerSprite.moveup() #calls the moveup() function
elif event.key == K_s: #sprite moves down
PlayerSprite.movedown() #calls the movedown() function
elif event.key == K_a: #sprite moves right
PlayerSprite.moveright() #calls the moveright() function
elif event.key == K_d: #sprite moves left
PlayerSprite.moveleft() #calls the moveleft() function
elif event.key == K_z: #brings up the player info
pygame.draw.rect(screen, (255,255,255), [150,80,400,300]) #draws a box 400px by 300px on screen
pygame.draw.rect(screen, (0,0,0), [150,80,400,300], 4) #outlines the box
TextOnScreen("PlayerName", (160, 90), 36) #pastes player name on menu
TextOnScreen(("HP:" + str(PlayerHP)),(160,110),36) #pastes text on screen showing Player's health
TextOnScreen("EXP: 0",(160,130),36)#pastes text screen showing player experience points
TextOnScreen("LVL: 1",(160,150),36) #pastes text on screen showing player Level
pygame.time.delay(1000) #text and box appear on screen for 1000 miliseconds
pygame.display.update() #updates the screen
PlayerStep = PlayerStep - 1 #PlayerStep decreases by 1
pygame.event.pump() #event queue continues
pygame.display.update() #updates the screen
#gives Player warning when PlayerStep is low
if PlayerStep < 5 and PlayerStep != 0: #when PlayerStep is low
TextOnScreen("Wait!", (255,50), 30) #warning text
pygame.event.pump() #event queue continues
elif PlayerStep <= 0 and Combat_Mode_Start == False: #causes Combat Mode when PlayerStep is 0
PlayerSprite.nomove() #sprite cannot move
Combat_Mode(7,15) #Combat Mode starts with the value for MonsterHP as 7 and the PlayerHP as 15
Combat_Mode_Start = True
pygame.display.update() #updates the screen
有没有办法打破现在的功能？ 任何和所有的帮助将不胜感激！