我目前在我的太空入侵者游戏中有一排11个入侵者，并且希望再添加5行，我需要在下面的代码中添加哪些代码？
导入系统 导入pygame 导入入侵者 进口导弹 来自pygame.locals import *
类SpaceInvaders：
# Constructor of the basic game class.
# This constructor calls initialize and main_loop method.
def __init__(self):
self.initialize()
self.main_loop()
# Initialization method. Allows the game to initialize different
# parameters and load assets before the game runs
def initialize(self):
pygame.init()
pygame.key.set_repeat(1, 1)
self.width = 1024
self.height = 768
self.screen = pygame.display.set_mode((self.width, self.height))
self.caption = "Space Invader!!"
pygame.display.set_caption(self.caption)
self.framerate = 30
self.clock = pygame.time.Clock()
self.missileXPos = -1
self.missileYPos = -1
self.missileFired = False
self.gameState = 1
self.font = pygame.font.Font(None, 40)
self.explosionSound = pygame.mixer.Sound("explosion.wav")
self.initializeGameVariables()
def initializeGameVariables(self):
self.starfieldImg = pygame.image.load('Starfield1024x768.png')
self.invaderImg = pygame.image.load('inv1.png')
self.altInvaderImg = pygame.image.load('inv12.png')
self.rocketLauncherImg = pygame.image.load('LaserBase.png')
self.missileImg = pygame.image.load('bullet.png')
self.rocketXPos = 512
self.alienDirection = -1
self.alienSpeed = 20
self.ticks = 0
self.invaders = []
xPos = 512
for i in range(11):
invader = Invader.Invader()
invader.setPosX(xPos)
invader.setPosY(100)
self.invaders.append(invader)
xPos += 32
self.missileFired = None
self.playerScore = 0
# main loop method keeps the game running. This method continuously
# calls the update and draw methods to keep the game alive.
def main_loop(self):
self.clock = pygame.time.Clock()
while True:
gametime = self.clock.get_time()
self.update(gametime)
self.draw(gametime)
self.clock.tick(self.framerate)
def updateStarted(self, gametime):
'''add action statements for start screen'''
events = pygame.event.get()
for event in events:
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_s:
self.gameState = 2
break
def updatePlaying(self, gametime):
events = pygame.event.get()
for event in events:
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT:
self.rocketXPos = self.rocketXPos + 4
elif event.key == pygame.K_LEFT:
self.rocketXPos = self.rocketXPos - 4
elif event.key == pygame.K_SPACE:
self.missileFired = Missile.Missile(self.rocketXPos, 650)
isInvaderRemaining = False
for i in range(11):
if self.invaders[i] != None:
isInvaderRemaining = True
break
if isInvaderRemaining == False:
self.gameState = 3
return
if self.missileFired != None:
self.missileFired.move()
if self.rocketXPos < 100:
self.rocketXPos = 100
if self.rocketXPos > 924:
self.rocketXPos = 924
self.ticks = self.ticks + gametime
if self.ticks > 500:
for i in range(11):
if self.invaders[i] != None:
self.invaders[i].moveHorizontal(self.alienSpeed * self.alienDirection)
leftMostInvader = None
rightMostInvader = None
for i in range(11):
if self.invaders[i] != None:
leftMostInvader = self.invaders[i]
break
for i in range(10, -1, -1):
if self.invaders[i] != None:
rightMostInvader = self.invaders[i]
break
if leftMostInvader.getPosX() < 96:
self.alienDirection = +1
xPos = 96
for i in range(11):
if self.invaders[i] != None:
self.invaders[i].moveVertical(4)
self.invaders[i].setPosX(xPos)
xPos = xPos + self.invaderImg.get_width()
if rightMostInvader.getPosX() > 924 :
self.alienDirection = -1
xPos = 924 - self.invaderImg.get_width() * 10
for i in range(11):
if self.invaders[i] != None:
self.invaders[i].moveVertical(4)
self.invaders[i].setPosX(xPos)
xPos = xPos + self.invaderImg.get_width()
self.ticks = 0
if self.missileFired != None:
rectMissile = pygame.Rect(self.missileFired.getPosX(), self.missileFired.getPosY(), self.missileImg.get_width(), self.missileImg.get_height())
for i in range(11):
if self.invaders[i] != None:
rectInvader = pygame.Rect(self.invaders[i].getPosX(), self.invaders[i].getPosY(), self.invaderImg.get_width(), self.invaderImg.get_height())
if rectMissile.colliderect(rectInvader):
self.missileFired = None
self.invaders[i] = None
self.playerScore = self.playerScore + 100
self.explosionSound.play()
break
def updateEnded(self, gametime):
'''add action statements for end screen'''
events = pygame.event.get()
for event in events:
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_x:
pygame.quit()
sys.exit()
elif event.key == pygame.K_r:
self.initializeGameVariables()
self.gameState = 1
# Update method contains game update logic, such as updating the game
# variables, checking for collisions, gathering input, and
# playing audio.
def update(self, gametime):
if self.gameState == 1:
self.updateStarted(gametime)
elif self.gameState == 2:
self.updatePlaying(gametime)
elif self.gameState == 3:
self.updateEnded(gametime)
def drawStarted(self, gametime):
'''add drawing statements for start screen'''
self.screen.blit(self.starfieldImg, (0,0))
width, height = self.font.size("S P A C E I N V A D E R S!")
text = self.font.render("S P A C E I N V A D E R S!", True, (255, 0, 0))
xPos = (1024 - width)/2
self.screen.blit(text, (xPos, 200))
width, height = self.font.size("P R E S S 'S' T O S T A R T")
text = self.font.render("P R E S S 'S' T O S T A R T", True, (255, 0, 0))
xPos = (1024 - width)/2
self.screen.blit(text, (xPos, 400))
pygame.display.flip()
def drawPlaying(self, gametime):
self.screen.blit(self.starfieldImg, (0,0))
score_text = self.font.render("Score : %d" %self.playerScore, True, (255, 0, 0))
self.screen.blit(score_text, (10, 10))
self.screen.blit(self.rocketLauncherImg, (self.rocketXPos, 650))
if self.missileFired != None:
self.screen.blit(self.missileImg, (self.missileFired.getPosX(), self.missileFired.getPosY() - self.missileImg.get_height()))
for i in range(11):
if self.invaders[i] != None:
self.screen.blit(self.invaderImg, self.invaders[i].getPosition())
pygame.display.flip()
# Draw method, draws the current state of the game on the screen
def draw(self, gametime):
if self.gameState == 1:
self.drawStarted(gametime)
elif self.gameState == 2:
self.drawPlaying(gametime)
elif self.gameState == 3:
self.drawEnded(gametime)
def drawEnded(self, gametime):
'''add drawing statements for end screen'''
self.screen.blit(self.starfieldImg, (0,0))
width, height = self.font.size("P R E S S 'R' T O R E S T A R T G A M E")
text = self.font.render("P R E S S 'R' T O R E S T A R T G A M E", True, (255, 0, 0))
xPos = (1024 - width)/2
self.screen.blit(text, (xPos, 200))
width, height = self.font.size("P R E S S 'X' T O E X I T G A M E")
text= self.font.render("P R E S S 'X' T O E X I T G A M E", True, (255, 0, 0))
xPos = (1024 - width)/2
self.screen.blit(text, (xPos, 300))
pygame.display.flip()
如果名称 ==＆＃34; 主要＆＃34;： game = SpaceInvaders（）
答案 0 :(得分：0)
我认为最好的方法是创建一个专门处理外星人的新类。您可以使用position属性创建该类。这样你就可以根据需要创建尽可能多的东西，并将它们放在你想要的任何地方。 这些方面的东西：
class Invaders(position, screen): # where position is the tuple of the position
def __init__(self):
self.screen = screen
self.x = position[0] # assign the initial x and y
self.y = position[1]
self.image = # load the image
# other code, i.e. load the image of the invaders and other proprierties
def update(self): # use this method to update the position of the alien and blit the new image
self.x = self.x + #add here a method or function that compute the new relative position
self.x = self.x + #add here a method or function that compute the new relative position
self.screen.blit(self.image, (self.x, self.y))