老师，运行出现这个错误，该怎么解决呢
#coding=utf-8
import pygame,time,random
SCREEN_WIDTH=600
SCREEN_HEIGHT=500
BG_COLOR=pygame.Color(0,0,0)
TEXT_COLOR=pygame.Color(255,0,0)
class MainGame():
window = None
my_tank = None
enemyTankList = []
enemyTankCount = 5
def __init__(self):
pass
def startGame(self):
pygame.display.init()
MainGame.my_tank=Tank(300,250)
self.creatEnemyTank()
MainGame.window=pygame.display.set_mode((SCREEN_WIDTH,SCREEN_HEIGHT),0,32)
pygame.display.set_caption("坦克大战")
while True:
time.sleep(0.02)
MainGame.window.fill(BG_COLOR)
self.getEvent()
MainGame.window.blit(self.getTextSurface("敌方坦克剩余数量%d"%6),(10,10))
MainGame.my_tank.displayTank()
self.blitEnemyTank()
if not MainGame.my_tank.stop:
MainGame.my_tank.move()
pygame.display.update()
def creatEnemyTank(self):
top=100
for i in range(MainGame.enemyTankCount):
left=random.randint(0,600)
speed=random.randint(1,4)
enemy=EnemyTank(left,top,speed)
MainGame.enemyTankList.append(enemy)
def blitEnemyTank(self):
for enemyTank in MainGame.enemyTankList:
enemyTank.displayTank()
def getEvent(self):
eventlist=pygame.event.get()
for event in eventlist:
if event.type==pygame.QUIT:
self.endGame()
if event.type==pygame.KEYDOWN:
if event.key==pygame.K_LEFT:
MainGame.my_tank.direction="L"
MainGame.my_tank.stop=False
#print("按下左键，坦克向左移动")
elif event.key==pygame.K_RIGHT:
MainGame.my_tank.direction = "R"
MainGame.my_tank.stop = False
#print("按下右键，坦克向右移动")
elif event.key==pygame.K_UP:
MainGame.my_tank.direction = "U"
MainGame.my_tank.stop = False
#print("按下上键，坦克向上移动")
elif event.key==pygame.K_DOWN:
MainGame.my_tank.direction = "D"
MainGame.my_tank.stop = False
#print("按下下键，坦克向下移动")
elif event.key == pygame.K_SPACE:
pass
#print("发射子弹")
if event.type == pygame.KEYUP:
if event.key==pygame.K_DOWN or event.key==pygame.K_UP or event.key==pygame.K_RIGHT or event.key==pygame.K_RIGHT:
MainGame.my_tank.stop=True
def endGame(self):
print("谢谢使用，欢迎再次使用")
exit()
def getTextSurface(self,text):
pygame.font.init()
font=pygame.font.SysFont("kaiti",18)
textSurface=font.render(text,True,TEXT_COLOR)
return textSurface
class Tank():
def __init__(self,left,top):
self.images={
"U":pygame.image.load("img/p1tankU.gif"),
"D": pygame.image.load("img/p1tankD.gif"),
"L": pygame.image.load("img/p1tankL.gif"),
"R": pygame.image.load("img/p1tankR.gif")}
self.direction="U"
self.image=self.images[self.direction]
self.rect=self.image.get_rect()
self.rect.left=left
self.rect.top=top
self.speed=5
self.flag=True
def randDirection(self):
num=random.randint(1,4)
if num==1:
return "U"
elif num==2:
return "D"
elif num==3:
return "L"
elif num==4:
return "R"
def move(self):
if self.direction=="L":
if self.rect.left>0:
self.rect.left-=self.speed
elif self.direction=="R":
if self.rect.left+self.rect.height <SCREEN_WIDTH:
self.rect.left+=self.speed
elif self.direction == "U":
if self.rect.top > 0:
self.rect.top -= self.speed
elif self.direction == "D":
if self.rect.top + self.rect.height < SCREEN_HEIGHT:
self.rect.top += self.speed
def displayTank(self):
self.image = self.images[self.direction]
MainGame.window.blit(self.image,self.rect)
class EnemyTank(Tank):
def __init__(self,left,top,speed):
self.images={
'U':pygame.image.load('img/enemy1U.gif'),
'D':pygame.image.load('img/enemy1D.gif'),
'L':pygame.image.load('img/enemy1L.gif'),
'R':pygame.image.load('img/enemy1R.gif')
}
self.direction=self.randDirection()
self.image=self.images[self.direction]
self.rect=self.image.get_rect()
self.rect.left=left
self.rect.top=top
self.speed=speed
self.flag=True
if __name__=="__main__":
MainGame().startGame()
我学着视频里检查了一下yml文件，yml文件没有问题，但还是出现了和视频里相似的报错
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