所以我正在设计一个将在谷歌应用程序引擎上运行的战舰后端系统......我昨天刚刚开始为游戏设计了一个框架。
不幸的是，我没有在python中编写太多代码，所以我不太熟悉该语言的细节。当我尝试运行程序时，我不断收到以下错误：
File "C:\Users\Shlomo\Desktop\eclipse\plugins\org.python.pydev_2.7.5.2013052819\pysrc\pydev_runfiles.py", line 432, in __get_module_from_str
mod = __import__(modname)
File "C:\Users\Shlomo\workspace\battleship\Battleship.py", line 222, in <module>
battleship = BattleshipGame("Shlomo",1,1,4,1,1,2,5,2,1,3,3,3,1,4,2,4,1,5,5,5,"John",1,1,4,1,1,2,5,2,1,3,3,3,1,4,2,4,1,5,5,5)
File "C:\Users\Shlomo\workspace\battleship\Battleship.py", line 210, in __init__
field = self.player1_field.getField()
AttributeError: 'NoneType' object has no attribute 'getField'
ERROR: Module: Battleship could not be imported (file: C:\Users\Shlomo\workspace\battleship\Battleship.py).
所以我翻译了这个错误，因为变量字段没有用PlayerField对象初始化......
这是我的代码：
import random
class Player:
player_name = None
player_id = None
game_id = None
your_turn = False
player_field = None
hit_field = None
opponent = None
def __init__(self,name,player_field,hit_field,opponent):
self.player_name = name
self.player_field = player_field
self.hit_field = hit_field
self.opponent = opponent
def getPlayerField(self):
return self.player_field
def performHit(self,x,y):
mark = None
hit = self.opponent.getPlayerField.hitAt(x,y)
if hit:
mark = 'X'
else:
mark = 'O'
self.hit_field.markHitField(x,y,mark)
class HitField:
hit_field = None
def __init__(self):
hit_field = [[0 for i in xrange(10)] for i in xrange(10)]
def markHitField(self,x,y,mark):
self.hitfield[x][y] = mark
class PlayerField:
player_field = [[0 for i in xrange(10)] for i in xrange(10)]
shipsOnField = []
goodToGo = False
def __init__(self,battleship,aircraft,destroyer,submarine,patrol):
if self.validPlacement(battleship)and self.validPlacement(aircraft)and self.validPlacement(destroyer) and self.validPlacement(submarine) and self.validPlacement(patrol):
self.placeShip(battleship)
self.placeShip(aircraft)
self.placeShip(destroyer)
self.placeShip(submarine)
self.placeShip(patrol)
self.shipsOnField.append(battleship)
self.shipsOnField.append(aircraft)
self.shipsOnField.append(destroyer)
self.shipsOnField.append(submarine)
self.shipsOnField.append(patrol)
self.goodToGo = True
else:
print "some pieces have been placed incorrectly"
def validPlacement(self,ship):
hx = ship.getHeadX;
hy = ship.getHeadY;
tx = ship.getTailX;
ty = ship.getTailY;
if not hx > 0 and not hx < 11:
return False
return True
def placeShip(self,ship):
hx = ship.getHeadX();
hy = ship.getHeadY();
tx = ship.getTailX();
ty = ship.getTailY();
for y in range(ty,hy):
for x in range(tx,hx):
self.player_field[x][y] = ship.getShipID
def hitAt(self,x,y):
hitPos = self.player_field[x][y]
if not hitPos == 0 and not hitPos == 'X':
self.getShipByID(hitPos).removeHealth
self.player_field[x][y] = 'X'
return True
def getShipByID(self,ID):
for ship in self.shipsOnField:
if ship.getShipID == ID:
return ship
def getField(self):
return self.player_field
class Ship(object):
ship_id = None
ship_name = None
max_health = None
remaining_health = None
head_pos_x = None
head_pos_y = None
tail_pos_x = None
tail_pos_y = None
def __init__(self,id,name,max,hx,hy,tx,ty):
self.ship_id = id
self.max_health = max
self.remaining_health = max
self.ship_name = name
self.head_pos_x = hx
self.head_pos_y = hy
self.tail_pos_x = tx
self.tail_pos_y = ty
self.remaining_health = max
def removeHealth(self):
self.remaining_health -= 1
def getHeadX(self):
return self.head_pos_x
def getHeadY(self):
return self.head_pos_y
def getTailX(self):
return self.tail_pos_x
def getTailY(self):
return self.tail_pos_y
def getRemainingHealth(self):
return self.remaining_health
def getShipID(self):
return self.ship_id
class Battleship(Ship):
def __init__(self,hx,hy,tx,ty):
Ship.__init__(self,1,"Battle Ship",4,hx,hy,tx,ty)
class AircraftCarrier(Ship):
def __init__(self,hx,hy,tx,ty):
Ship.__init__(self,2,"Aircraft Carrier",5,hx,hy,tx,ty)
class Destroyer(Ship):
def __init__(self,hx,hy,tx,ty):
Ship.__init__(self,3,"Destroyer",3,hx,hy,tx,ty)
class Submarine(Ship):
def __init__(self,hx,hy,tx,ty):
Ship.__init__(self,4,"Submarine",3,hx,hy,tx,ty)
class PatrolBoat(Ship):
def __init__(self,hx,hy,tx,ty):
Ship.__init__(self,5,"Patrol Boat",2,hx,hy,tx,ty)
class BattleshipGame:
current_turn = None
player1 = None
player2 = None
player1_field = None
player1_opponent = player2
player2_field = None
player2_opponent = player1
def firstTurn(self):
rand = random.randint(1,2)
if rand==1:
return self.player1
else:
return self.player2
def printGameBoard(self):
field = self.player1_field.getField()
for y in range(1,10):
for x in range(1,10):
print field[x][y]
print '\n'
def __init__(self,p1name,p1bshx,p1bshy,p1bstx,p1bsty
,p1dhx,p1dhy,p1dtx,p1dty
,p1shx,p1shy,p1stx,p1sty
,p1pbhx,p1pbhy,p1pbtx,p1pbty
,p1achx,p1achy,p1actx,p1acty
,p2name,p2bshx,p2bshy,p2bstx,p2bsty
,p2dhx,p2dhy,p2dtx,p2dty
,p2shx,p2shy,p2stx,p2sty
,p2pbhx,p2pbhy,p2pbtx,p2pbty
,p2achx,p2achy,p2actx,p2acty):
player1_field = PlayerField(Battleship(p1bshx,p1bshy,p1bstx,p1bsty),
AircraftCarrier(p1achx,p1achy,p1actx,p1acty),
Destroyer(p1dhx,p1dhy,p1dtx,p1dty),
Submarine(p1shx,p1shy,p1stx,p1sty),
PatrolBoat(p1pbhx,p1pbhy,p1pbtx,p1pbty))
player2_field = PlayerField(Battleship(p2bshx,p2bshy,p2bstx,p2bsty),
AircraftCarrier(p2achx,p2achy,p2actx,p2acty),
Destroyer(p2dhx,p2dhy,p2dtx,p2dty),
Submarine(p2shx,p2shy,p2stx,p2sty),
PatrolBoat(p2pbhx,p2pbhy,p2pbtx,p2pbty))
player1 = Player(p1name,self.player1_field,HitField(),self.player2)
player2 = Player(p2name,self.player2_field,HitField(),self.player1)
self.current_turn = self.firstTurn()
battleship = BattleshipGame("Player1",1,1,4,1,1,2,5,2,1,3,3,3,1,4,2,4,1,5,5,5,"Player2",1,1,4,1,1,2,5,2,1,3,3,3,1,4,2,4,1,5,5,5)
battleship.printGameBoard()
对于sytax感到抱歉，我无法以代码格式粘贴它。这段代码可能有一些问题，但我还没有能够通过这个问题......
我做错了什么？
答案 0 :(得分：1)
在__init__中，您将分配给局部变量player1_field而不是实例数据。而不是：
player1_field = PlayerField(...
你想：
self.player1_field = PlayerField(...
如果没有这个，你试图推断你的类的值为player1_field，即无。
答案 1 :(得分：1)
Python不是Java或您尝试编写的任何语言。这些可变类属性不太可能按照您的想法执行。
class PlayerField:
player_field = [[0 for i in xrange(10)] for i in xrange(10)]
shipsOnField = []
goodToGo = False