我是一名使用Pygame编写Python语言游戏的新手。我的游戏循环有问题。我只能运行我的游戏然后我再也无法让我的游戏循环。我将在下面发布我的代码：
这是我基于鼠标的菜单（Menu.py）
import pygame, os, sys
from pygame.locals import *
pygame.init()
def play_music(name, volume=0.7, loop=-1):
fullname = os.path.join('data', name)
try:
pygame.mixer.music.load(fullname)
pygame.mixer.music.set_volume(volume)
pygame.mixer.music.play(loop)
except:
raise SystemExit, "Can't load: " + fullname
def load_sound(name, volume=0.05):
fullname = os.path.join('data', name)
try:
sound = pygame.mixer.Sound(fullname)
sound.set_volume(volume)
except:
raise SystemExit, "Can't load: " + fullname
return sound
def run_game():
import Grab
def reset_highscore():
open("data/highscore.sav", "w").write(str(0))
print "Grab High score reset to 0"
class GrabMenu():
os.environ["SDL_VIDEO_CENTERED"] = "1"
pygame.mouse.set_visible(0) #make the mouse cursor invisible
pygame.display.set_caption("Grab") #name the game
pygame.display.set_icon(pygame.image.load("data/Icon.png")) #set an icon for the game
screen = pygame.display.set_mode((800, 800)) #screen resolution width and height
background = pygame.Surface(screen.get_size()) #make the background
background = pygame.image.load("data/BG.png").convert() #convert background
background = pygame.transform.scale(background,(800, 800)) #scale the background down to the screen resulution
cursor = pygame.image.load("data/Hand1.png") #make a new cursor inside the game
WHITE = (255, 255, 255) # colors
YELLOW = (255, 216, 0)
running = True # value for main loop
clock = pygame.time.Clock()
font = pygame.font.SysFont("times new roman", 28, bold=True) # menu font and text.
fontcolor = WHITE
fontcolor2 = WHITE
fontcolor3 = WHITE
fontcolor4 = WHITE
mousetrigger = False
mouseclick = load_sound("Click.wav", 3.5) # mouse click
Menu1 = True
Menu2 = False #options menu
Menu3 = False #reset score menu
#JOYSTICK
try:
j = pygame.joystick.Joystick(0) # create a joystick instance
j.init() # init instance
print 'Enabled joystick: ' + j.get_name()
except:
pass
#main_loop
while running == True:
clock.tick(30)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
running = False, sys.exit()
if event.type == MOUSEBUTTONDOWN and event.button == 1: # if mouse button is pressed, (left mouse key only)
if Menu1:
if ren_r.collidepoint(pygame.mouse.get_pos()): # play the game
if Menu1 == False:
pass
else:
mouseclick.play()
run_game()
elif ren2_r.collidepoint(pygame.mouse.get_pos()): #options
if Menu1 == False:
pass
else:
mouseclick.play()
Menu1 = False
Menu2 = True
elif ren3_r.collidepoint(pygame.mouse.get_pos()): #how to play
if Menu1 == False:
pass
else:
mouseclick.play()
elif ren4_r.collidepoint(pygame.mouse.get_pos()): #quit the game
if Menu1 == False:
pass
else:
mouseclick.play()
running = False, pygame.quit(), sys.exit()
elif Menu2:
if ren5_r.collidepoint(pygame.mouse.get_pos()): #reset high score
mouseclick.play()
reset_highscore()
elif ren6_r.collidepoint(pygame.mouse.get_pos()): #go back
mouseclick.play()
Menu1 = True
Menu2 = False
screen.blit(background, (0, 0)) #draw the background
screen.blit(cursor, pygame.mouse.get_pos()) #set the cursor image as the new mouse cursor
if Menu1:
ren = font.render("Play", True, (fontcolor))
ren_r = ren.get_rect()
ren_r.x, ren_r.y = 340, 530
ren2 = font.render("Options", True, (fontcolor2))
ren2_r = ren2.get_rect()
ren2_r.x, ren2_r.y = 340, 590
ren3 = font.render("How to Play", True, (fontcolor3))
ren3_r = ren3.get_rect()
ren3_r.x, ren3_r.y = 340, 650
ren4 = font.render("Quit Game", True, (fontcolor4))
ren4_r = ren4.get_rect()
ren4_r.x, ren4_r.y = 340, 710
screen.blit(ren, (340, 530))
screen.blit(ren2, (340, 590))
screen.blit(ren3, (340, 650))
screen.blit(ren4, (340, 710))
if ren_r.collidepoint(pygame.mouse.get_pos()):
mousetrigger = True
fontcolor = YELLOW
else:
fontcolor = WHITE
if ren2_r.collidepoint(pygame.mouse.get_pos()):
mousetrigger = True
fontcolor2 = YELLOW
else:
fontcolor2 = WHITE
if ren3_r.collidepoint(pygame.mouse.get_pos()):
mousetrigger = True
fontcolor3 = YELLOW
else:
fontcolor3 = WHITE
if ren4_r.collidepoint(pygame.mouse.get_pos()):
mousetrigger = True
fontcolor4 = YELLOW
else:
fontcolor4 = WHITE
elif Menu2:
options = font.render("Options", 1, (WHITE))
ren5 = font.render("Reset High Score", True, (fontcolor))
ren5_r = ren5.get_rect()
ren5_r.x, ren5_r.y = 350, 650
ren6 = font.render("Go back", True, (fontcolor2))
ren6_r = ren6.get_rect()
ren6_r.x, ren6_r.y = 350, 700
screen.blit(options, (350, 600))
screen.blit(ren5, (350, 650))
screen.blit(ren6, (350, 700))
if ren5_r.collidepoint(pygame.mouse.get_pos()):
mousetrigger = True
fontcolor = YELLOW
else:
fontcolor = WHITE
if ren6_r.collidepoint(pygame.mouse.get_pos()):
mousetrigger = True
fontcolor2 = YELLOW
else:
fontcolor2 = WHITE
pygame.display.update()
此外，当我按下菜单上的“播放”文字时，我会使用此功能：
def run_game():
import Grab
启动我的主程序“Grab.py”：
import pygame, time, math, sys, random, os
from pygame.locals import *
pygame.init() #make pygame ready
pygame.joystick.init
#my game code
done = False
while done == False:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
elif event.key == K_ESCAPE:
if highscore == 0:
pass
if highscore < get_highscore():
pass
else:
save_highscore(highscore)
if score == 0:
pass
else:
save_score(score)
save_level(level)
save_world(world)
done = True
pygame.mixer.music.stop()
主游戏循环在此结束，并将我发回我的菜单，就像我想要的那样。但是，当我尝试从菜单中再次导入抓取时，没有任何反应。我去谷歌搜索“Python导入周期”，我发现了一些东西，但我仍然卡住了。必须有一种更简单的方法来制作Grab.py循环：
def run_game():
import Grab
非常感谢任何帮助。 关心HJ。
答案 0 :(得分：3)
一般来说，使用import加载常量，函数或类的定义。不要用它来运行一堆语句。调用函数来运行一堆语句。
为了提高效率，Python仅导入模块一次。第一次加载后，模块将缓存在sys.modules中。每次Python遇到import语句时，都会检查模块是否在sys.modules中并使用缓存模块（如果存在）。仅当模块不在sys.modules中时，Python才会执行模块中的代码。因此，模块中的代码永远不会执行多次。这就是为什么import Grab在第二次到达import语句时不执行Grab.py中的代码的原因。
因此，重构Grab.py以将您希望在函数中运行多次的所有代码放在一起：
import pygame, time, math, sys, random, os
from pygame.locals import *
pygame.init() #make pygame ready
pygame.joystick.init() # <-- Note you need parentheses to *call* the init function
def main():
done = False
while done == False:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
elif event.key == K_ESCAPE:
if highscore == 0:
pass
if highscore < get_highscore():
pass
else:
save_highscore(highscore)
if score == 0:
pass
else:
save_score(score)
save_level(level)
save_world(world)
done = True
pygame.mixer.music.stop()
然后更改
import Grab
到
import Grab
Grab.main()
您可以将import Grab移至Menu.py的顶部;一般来说，它是任何Python脚本或模块的recommended to put all the import statements at the top。