A variation on the classic game. A ship of random length will be placed on a board whose size is determined by you, the player. You may also select the number of turns you would like to use to try to sink it. After each guess, the board will be updated to show your hits and misses. If you hit all of the blocks in the ship before you run out of turns, you win!
To play the game, execute the code in cells 1, 2, and 3. If you do not yet have the ipythonblocks module installed, execute cell 4 first.
The original code from the Codecademy lesson is included at the bottom so you can see how the project evolved from that.
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from random import randint
from ipythonblocks import BlockGrid
from IPython.display import clear_output
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def place_ship(boardsize):
'''
Place a ship randomly on the board
of size boardsize x boardsize.
Randomly decide whether it is vertical
or horizontal, what length ship, the
placement of the first block, and check
that it will fit on the board. If not,
adjust the placement.
'''
#Select vertical or horizontal ship
shipdir = randint(0,1)
#random ship length
shiplength = randint(1,boardsize-2)
shipstart = randint(0,boardsize-1)
shipend = shipstart - 1 + shiplength
shipdiff = boardsize - 1 - shipend
if shipdiff < 0:
shipstart += shipdiff
shipend += shipdiff
#print shipdir, shiplength, shipstart, shipend, shipdiff
shipside = randint(0,boardsize-1)
ship = []
if randint(0,1) == 1:
for i in range(shiplength):
ship.append((shipstart+i,shipside))
else:
for i in range(shiplength):
ship.append((shipside,shipstart+i))
return ship
BLACK = (0,0,0)
RED = (255,0,0)
ORANGE = (255,150,0)
OCEAN = (13, 123, 234)
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print "Let's play Battleship!"
boardsize = input("How big should the ocean be? (Enter an integer from 4 to 20)")
nturns = input("How many shots would you like?")
board = BlockGrid(boardsize, boardsize, fill=OCEAN)
board.show()
ship = place_ship(boardsize)
nhits = 0
for turn in range(nturns):
#print ship
guess_row = input("Guess Row:")
guess_col = input("Guess Col:")
if (guess_row < 0 or guess_row >= board.height) or (guess_col < 0 or guess_col >= board.width):
clear_output()
board.show()
print "Oops, that's not even in the ocean."
else:
guessblock = board[guess_row,guess_col]
if (guess_row,guess_col) in ship:
clear_output()
board[guess_row,guess_col] = RED
board.show()
print "It's a hit!"
nhits += 1
elif (guessblock.red,guessblock.green,guessblock.blue) == BLACK or (guessblock.red,guessblock.green,guessblock.blue) == RED:
clear_output()
board.show()
print "You guessed that one already."
else:
clear_output()
board[guess_row,guess_col] = BLACK
board.show()
print "You missed my battleship!"
if nhits == len(ship):
clear_output()
board[guess_row,guess_col] = RED
board.show()
print "Congratulations! You sunk my battleship!"
break
if turn+1 == nturns:
clear_output()
#Reveal location of ship in yellow
for block in ship:
current = board[block[0],block[1]]
if (current.red,current.green,current.blue) == RED:
pass
else:
board[block[0],block[1]] = ORANGE
board.show()
print "Sorry, you are out of turns. Game Over."
else:
print "Remaining turns: ",nturns-1-turn
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#Upgrade the Python package installer, pip, then install ipythonblocks, if not already present.
!pip install --upgrade pip
!pip install ipythonblocks
This project can be assigned after a student completes the Codecademy Python lesson and becomes familiar with the module ipythonblocks .
Battleship and use ipythonblocks to make it more visual.
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from random import randint
board = []
for x in range(5):
board.append(["O"] * 5)
def print_board(board):
for row in board:
print " ".join(row)
print "Let's play Battleship!"
print_board(board)
def random_row(board):
return randint(0, len(board) - 1)
def random_col(board):
return randint(0, len(board[0]) - 1)
ship_row = random_row(board)
ship_col = random_col(board)
# Everything from here on should go in your for loop!
# Be sure to indent four spaces!
for turn in range(4):
guess_row = input("Guess Row:")
guess_col = input("Guess Col:")
if guess_row == ship_row and guess_col == ship_col:
print "Congratulations! You sunk my battleship!"
break
else:
if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4):
print "Oops, that's not even in the ocean."
elif(board[guess_row][guess_col] == "X"):
print "You guessed that one already."
else:
print "You missed my battleship!"
board[guess_row][guess_col] = "X"
# Print (turn + 1) here!
if turn == 3:
print "Ship was located at row " + str(ship_row) + ", col " + str(ship_col)
print "Game Over"
else:
print turn+1
print_board(board)