我用python创建了一个简单的太空入侵者游戏，但是，我想创建一个菜单和更多级别，但我不知道如何去做这个。有人可以告诉我如何创建菜单级别和其他附加级别？
from pygame import *
import random
init()
screen = display.set_mode((640, 480))
key.set_repeat(1, 1)
display.set_caption("Py-Invaders")
background = image.load("data/background.bmp")
class Sprite:
def __init__ (self, xposition, yposition, filename):
self.x = xposition
self.y = yposition
self.bitmap = image.load(filename)
self.bitmap.set_colorkey((0, 0, 0))
def set_position (self, xposition, yposition):
self.x = xposition
self.y = yposition
def render (self):
screen.blit(self.bitmap, (self.x, self.y))
def setImage (self, filename):
self.bitmap = image.load(filename)
def removeColor (self, colorkey):
self.bitmap.set_colorkey(colorkey)
def Intersect(x1, y1, x2, y2):
if (x1 > x2 - 32) and (x1 < x2 + 32) and (y1 > y2 - 32) and (y1 < y2 + 32):
return (1)
else:
return (0)
def rocketIntersect(x1, y1, x2, y2):
if (x1 > x2 - 32) and (x1 < x2 + 143) and (y1 > y2 - 32) and (y1 < y2 + 143):
return (1)
else:
return (0)
#Creating invaders1
invaders = []
x = 0
for i in range (10):
invaders.append(Sprite(50 * x + 50, 50, "data/invader.bmp"))
x += 1
#Creating invaders2
invaders2 = []
y = 0
for i in range (10):
invaders2.append(Sprite(50 * y + 50, 100, "data/invader.bmp"))
y += 1
ship = Sprite(20, 400, "data/ship/shipup.bmp")
shiplaser = Sprite(0, 480, "data/lasers/shiplaser.bmp")
shiprocket = Sprite(0, 480, "data/shiprocket.bmp")
invaderlaser = Sprite(0, 480, "data/lasers/invaderlaser.bmp")
invaderlaser2 = Sprite(0, 480, "data/lasers/invaderlaser.bmp")
quit = 0
invaderspeed = 3
invaderspeed2 = 3
while quit == 0: #Main game while loop
screen.blit(background, (0, 0))
#Moving the invaders
for i in range(len(invaders)):
invaders[i].x += + invaderspeed
invaders[i].render()
if invaders[len(invaders)-1].x > 590:
invaderspeed = -3
for i in range(len(invaders)):
invaders[i].y += 5
if invaders[0].x < 10:
invaderspeed = 3
for i in range(len(invaders)):
invaders[i].y += 5
#Moving the invaders2
for i in range(len(invaders2)):
invaders2[i].x += + invaderspeed2
invaders2[i].render()
if invaders2[len(invaders2)-1].x > 590:
invaderspeed2 = -3
for i in range(len(invaders2)):
invaders2[i].y += 5
if invaders2[0].x < 10:
invaderspeed2 = 3
for i in range(len(invaders2)):
invaders2[i].y += 5
#Moving the ship laser
if shiplaser.y < 479 and shiplaser.y > 0:
shiplaser.render()
shiplaser.y -= 5
#Moving the ship rocket
if shiprocket.y < 479 and shiprocket.y > -150:
shiprocket.render()
shiprocket.y -= 5
#Moving the invaders laser
if invaderlaser.y >= 480 and len(invaders) > 0:
invaderlaser.x = invaders[random.randint(0, len(invaders) - 1)].x
invaderlaser.y = invaders[0].y
#Moving the invaders2 laser
if invaderlaser2.y >= 480 and len(invaders2) > 0:
invaderlaser2.x = invaders2[random.randint(0, len(invaders2) - 1)].x
invaderlaser2.y = invaders2[0].y
#Ship collisions with invaders laser
if Intersect(ship.x, ship.y, invaderlaser.x, invaderlaser.y):
quit = 1
#Ship collisions with invaders2 laser
if Intersect(ship.x, ship.y, invaderlaser2.x, invaderlaser2.y):
quit = 1
#Invaders collision with ship laser
for i in range(0, len(invaders)):
if Intersect(shiplaser.x, shiplaser.y, invaders[i].x, invaders[i].y):
del invaders[i]
shiplaser.x = -1
shiplaser.y = -1
break
#Invaders2 collision with ship laser
for i in range(0, len(invaders2)):
if Intersect(shiplaser.x, shiplaser.y, invaders2[i].x, invaders2[i].y):
del invaders2[i]
shiplaser.x = -1
shiplaser.y = -1
break
#Invaders collision with ship rocket
for i in range(0, len(invaders)):
if Intersect(shiprocket.x, shiprocket.y, invaders[i].x, invaders[i].y):
del invaders[i]
break
#Invaders2 collision with ship rocket
for i in range(0, len(invaders2)):
if Intersect(shiprocket.x, shiprocket.y, invaders2[i].x, invaders2[i].y):
del invaders2[i]
break
if len(invaders) and len(invaders2) == 0:
quit = 1
for ourevent in event.get():
if ourevent.type == QUIT:
quit = 1
if ourevent.type == KEYDOWN:
if ourevent.key == K_RIGHT and ship.x < 590:
ship.x += 5
ship.setImage("data/ship/shipright.bmp")
ship.removeColor((0, 0, 0))
if ourevent.key == K_LEFT and ship.x > 10:
ship.x -= 5
ship.setImage("data/ship/shipleft.bmp")
ship.removeColor((0, 0, 0))
if ourevent.key == K_UP and ship.y > 10:
ship.y -= 5
ship.setImage("data/ship/shipup.bmp")
ship.removeColor((0, 0, 0))
if ourevent.key == K_DOWN and ship.y < 450:
ship.y += 5
ship.setImage("data/ship/shipdown.bmp")
ship.removeColor((0, 0, 0))
if ourevent.key == K_SPACE:
shiplaser.x = ship.x
shiplaser.y = ship.y
if ourevent.key == K_z:
shiprocket.x = ship.x
shiprocket.y = ship.y
if ourevent.key == K_p:
time.delay(10000)
invaderlaser.render()
invaderlaser.y += 5
invaderlaser2.render()
invaderlaser2.y += 5
ship.render()
display.update()
time.delay(5)
答案 0 :(得分：0)
阅读finite-state machines，然后将主循环变成一个。
答案 1 :(得分：0)
鉴于你的代码，我认为你是一个初学者程序员 - 因为你没有使用像functions那样的代码结构（也没有任何关于面向对象的东西，但这并不是真的需要）。所以，现在你必须更多地了解你所学到的东西：寻找Python教程并了解函数。做一些练习直到你理解它们。然后你“重构”你的代码，这样整个现有的级别就存在于一个函数中（它应该调用较小的函数，而不是像这样的大块）。
然后就完成了，你将创建你的菜单，使用完全不同的逻辑，可能使用一些其他帮助项目，使用Pygame创建菜单（它没有设置自己创建菜单，它可能比你的更复杂整场比赛）。然后一个“主要功能”将驱动你的游戏，要么调用要显示的菜单，要么调用要播放的级别。这个主要功能可以将参数传递给你的“级别”功能（基本上是你当前的整个游戏），这将使相同的代码对每个级别的行为都不同。 （例如，敌舰的数量，或速度是很好的参数，以告诉一个级别的另一个级别）