我用Python和Pygame Zero创建了一个游戏。当用户达到 200 分时，会出现一个带有按钮的屏幕。当用户单击按钮(下一级(时，应出现一个新级别。我尝试使用游戏模式 = 3 和游戏开始 = 1 来管理它(请参阅代码(。但是当用户点击"下一级"时，没有任何反应。那么，如何添加多个级别？
from random import randint
import pygame
WIDTH = 800
HEIGHT = 800
apple = Actor("apple")
apple.pos = randint(0, 800), randint(-800, 0)
pear = Actor("pear")
pear.pos = randint(0, 800), randint(-800, 0)
plum = Actor("plum")
plum.pos = randint(0, 800), randint(-800, 0)
donut = Actor("donut")
donut.pos = randint(0, 800), randint(-800, 0)
ice = Actor("ice")
ice.pos = randint(0, 800), randint(-800, 0)
chips = Actor("chips")
chips.pos = randint(0, 800), randint(-800, 0)
happysmiley = Actor("happysmiley")
happysmiley.pos = 300, 750
start = Actor("start")
start.pos = 700,750
quitgame = Actor("quit")
quitgame.pos = 600, 750
creditsinfo = Actor("credits")
creditsinfo.pos = 485, 750
back = Actor("back")
back.pos = 600, 100
nextlevel = Actor("nextlevel")
nextlevel.pos = 700, 750
gameover = False
score = 0
gamemode = 1
gamestart = 0
background = pygame.image.load("images\background.png")
pygame.mixer.init()
pygame.mixer.music.load("music\funmusic.mp3")
pygame.mixer.music.play(-1)
def draw():
screen.clear()
if score >= 200:
endoflevel1()
else:
drawgame()
def drawgame():
global gamemode
if gamemode == 1:
screen.clear()
screen.blit("background",(0,0))
apple.draw()
pear.draw()
plum.draw()
donut.draw()
ice.draw()
chips.draw()
quitgame.draw()
happysmiley.draw()
start.draw()
creditsinfo.draw()
screen.draw.text("Punkte: " + str(score), (700, 5), color = "black")
elif gamemode == 0:
screen.clear()
screen.blit("background",(0,0))
apple.draw()
pear.draw()
plum.draw()
donut.draw()
ice.draw()
chips.draw()
happysmiley.draw()
screen.draw.text("Punkte: " + str(score), (700, 5), color = "black")
elif gamemode == 2:
screen.clear()
screen.fill("orange")
back.draw()
screen.draw.text("Credits", topleft=(350,10), fontsize=40)
pygame.display.flip()
elif gamemode == 3:
screen.clear()
screen.blit("background",(0,0))
apple.draw()
pear.draw()
plum.draw()
donut.draw()
ice.draw()
chips.draw()
happysmiley.draw()
screen.draw.text("Punkte: " + str(score), (700, 5), color = "black")
def update():
global score, gamestart
if gamestart == 1:
if score >= 200:
pygame.mixer.music.stop()
return
if apple.y < 800:
apple.y = apple.y + 4
else:
apple.x = randint(0, 800)
apple.y = randint(-800, 0)
if pear.y < 800:
pear.y = pear.y + 4
else:
pear.x = randint(0, 800)
pear.y = randint(-800, 0)
if plum.y < 800:
plum.y = plum.y + 4
else:
plum.x = randint(0, 800)
plum.y = randint(-800, 0)
if donut.y < 800:
donut.y = donut.y + 4
else:
donut.x = randint(0, 800)
donut.y = randint(-800, 0)
if ice.y < 800:
ice.y = ice.y + 4
else:
ice.x = randint(0, 800)
ice.y = randint(-800, 0)
if chips.y < 800:
chips.y = chips.y + 4
else:
chips.x = randint(0, 800)
chips.y = randint(-800, 0)
if keyboard.left:
happysmiley.x = happysmiley.x - 5
elif keyboard.right:
happysmiley.x = happysmiley.x + 5
if happysmiley.collidepoint (apple.x, apple.y):
score = score + 2
effect = pygame.mixer.Sound("sounds\bonus.wav")
effect.play()
if happysmiley.collidepoint (pear.x, pear.y):
score = score + 1
effect = pygame.mixer.Sound("sounds\bonus.wav")
effect.play()
if happysmiley.collidepoint (plum.x, plum.y):
score = score + 1
effect = pygame.mixer.Sound("sounds\bonus.wav")
effect.play()
if happysmiley.collidepoint (donut.x, donut.y):
score = score - 1
effect = pygame.mixer.Sound("sounds\no.wav")
effect.play()
if happysmiley.collidepoint (ice.x, ice.y):
score = score - 1
effect = pygame.mixer.Sound("sounds\no.wav")
effect.play()
if happysmiley.collidepoint (chips.x, chips.y):
score = score - 1
effect = pygame.mixer.Sound("sounds\no.wav")
effect.play()
def on_mouse_down(pos): # wurde Maustaste gedrückt?
global score, gamestart, gamemode
if start.collidepoint(pos):
gamestart = 1
gamemode = 0
if quitgame.collidepoint(pos):
exit()
if creditsinfo.collidepoint(pos):
gamemode = 2
if back.collidepoint(pos):
gamemode = 1
def endoflevel1():
global score, gamemode, gamestart
screen.clear()
screen.fill("green")
screen.draw.text("Congratulations! You have successfully completed the 1st level!", topleft=(100,350), fontsize=30, color = "black")
nextlevel.draw()
if nextlevel.collidepoint:
gamemode = 3
gamestart = 1
pygame.display.flip()
我做到了。在 endoflevel1 函数中，有必要使用 pygame 事件处理程序来检查鼠标按钮是否被单击并与"下一级"图形匹配位置。这是现在正在运行的 endoflevel1 函数的代码。在 endoflevel1 函数中，不可能像 on_mouse_down(pos( 函数那样使用"简单方法"来检查鼠标按钮是否被单击并与指定的图形/演员匹配：
def endoflevel1():
global score, gamemode, gamestart, level
screen.clear()
screen.fill("green")
screen.draw.text("Congratulations! You have successfully completed the 1st level!", topleft=(100,350), fontsize=30, color = "black")
nextlevel.draw()
gamestart = 0
pygame.display.flip()
running = True
while (running):
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONDOWN:
if nextlevel.collidepoint(event.pos):
score = 0
gamemode = 3
gamestart = 1
level = 2
running = False