Welcome, guest | Sign In | My Account | Store | Cart

Another fun game that is fun to program and play. No special AI (yet). But still and entertaining game.

For more info about Battleships in Python follow the link.

Don't have Python Installed?

Install Python along with this recipe!

After Installation

  1. Edit the recipe.py file to modify the recipe.
  2. Run state run recipe to run the recipe and see your changes.
Python, 310 lines
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
import copy, random

def print_board(s,board):

	# WARNING: This function was crafted with a lot of attention. Please be aware that any
	#          modifications to this function will result in a poor output of the board 
	#          layout. You have been warn. 

	#find out if you are printing the computer or user board
	player = "Computer"
	if s == "u":
		player = "User"
	
	print "The " + player + "'s board look like this: \n"

	#print the horizontal numbers
	print " ",
	for i in range(10):
		print "  " + str(i+1) + "  ",
	print "\n"

	for i in range(10):
	
		#print the vertical line number
		if i != 9: 
			print str(i+1) + "  ",
		else:
			print str(i+1) + " ",

		#print the board values, and cell dividers
		for j in range(10):
			if board[i][j] == -1:
				print ' ',	
			elif s == "u":
				print board[i][j],
			elif s == "c":
				if board[i][j] == "*" or board[i][j] == "$":
					print board[i][j],
				else:
					print " ",
			
			if j != 9:
				print " | ",
		print
		
		#print a horizontal line
		if i != 9:
			print "   ----------------------------------------------------------"
		else: 
			print 

def user_place_ships(board,ships):

	for ship in ships.keys():

		#get coordinates from user and vlidate the postion
		valid = False
		while(not valid):

			print_board("u",board)
			print "Placing a/an " + ship
			x,y = get_coor()
			ori = v_or_h()
			valid = validate(board,ships[ship],x,y,ori)
			if not valid:
				print "Cannot place a ship there.\nPlease take a look at the board and try again."
				raw_input("Hit ENTER to continue")

		#place the ship
		board = place_ship(board,ships[ship],ship[0],ori,x,y)
		print_board("u",board)
		
	raw_input("Done placing user ships. Hit ENTER to continue")
	return board


def computer_place_ships(board,ships):

	for ship in ships.keys():
	
		#genreate random coordinates and vlidate the postion
		valid = False
		while(not valid):

			x = random.randint(1,10)-1
			y = random.randint(1,10)-1
			o = random.randint(0,1)
			if o == 0: 
				ori = "v"
			else:
				ori = "h"
			valid = validate(board,ships[ship],x,y,ori)

		#place the ship
		print "Computer placing a/an " + ship
		board = place_ship(board,ships[ship],ship[0],ori,x,y)
	
	return board


def place_ship(board,ship,s,ori,x,y):

	#place ship based on orientation
	if ori == "v":
		for i in range(ship):
			board[x+i][y] = s
	elif ori == "h":
		for i in range(ship):
			board[x][y+i] = s

	return board
	
def validate(board,ship,x,y,ori):

	#validate the ship can be placed at given coordinates
	if ori == "v" and x+ship > 10:
		return False
	elif ori == "h" and y+ship > 10:
		return False
	else:
		if ori == "v":
			for i in range(ship):
				if board[x+i][y] != -1:
					return False
		elif ori == "h":
			for i in range(ship):
				if board[x][y+i] != -1:
					return False
		
	return True

def v_or_h():

	#get ship orientation from user
	while(True):
		user_input = raw_input("vertical or horizontal (v,h) ? ")
		if user_input == "v" or user_input == "h":
			return user_input
		else:
			print "Invalid input. Please only enter v or h"

def get_coor():
	
	while (True):
		user_input = raw_input("Please enter coordinates (row,col) ? ")
		try:
			#see that user entered 2 values seprated by comma
			coor = user_input.split(",")
			if len(coor) != 2:
				raise Exception("Invalid entry, too few/many coordinates.");

			#check that 2 values are integers
			coor[0] = int(coor[0])-1
			coor[1] = int(coor[1])-1

			#check that values of integers are between 1 and 10 for both coordinates
			if coor[0] > 9 or coor[0] < 0 or coor[1] > 9 or coor[1] < 0:
				raise Exception("Invalid entry. Please use values between 1 to 10 only.")

			#if everything is ok, return coordinates
			return coor
		
		except ValueError:
			print "Invalid entry. Please enter only numeric values for coordinates"
		except Exception as e:
			print e

def make_move(board,x,y):
	
	#make a move on the board and return the result, hit, miss or try again for repeat hit
	if board[x][y] == -1:
		return "miss"
	elif board[x][y] == '*' or board[x][y] == '$':
		return "try again"
	else:
		return "hit"

def user_move(board):
	
	#get coordinates from the user and try to make move
	#if move is a hit, check ship sunk and win condition
	while(True):
		x,y = get_coor()
		res = make_move(board,x,y)
		if res == "hit":
			print "Hit at " + str(x+1) + "," + str(y+1)
			check_sink(board,x,y)
			board[x][y] = '$'
			if check_win(board):
				return "WIN"
		elif res == "miss":
			print "Sorry, " + str(x+1) + "," + str(y+1) + " is a miss."
			board[x][y] = "*"
		elif res == "try again":
			print "Sorry, that coordinate was already hit. Please try again"	

		if res != "try again":
			return board

def computer_move(board):
	
	#generate user coordinates from the user and try to make move
	#if move is a hit, check ship sunk and win condition
	while(True):
		x = random.randint(1,10)-1
		y = random.randint(1,10)-1
		res = make_move(board,x,y)
		if res == "hit":
			print "Hit at " + str(x+1) + "," + str(y+1)
			check_sink(board,x,y)
			board[x][y] = '$'
			if check_win(board):
				return "WIN"
		elif res == "miss":
			print "Sorry, " + str(x+1) + "," + str(y+1) + " is a miss."
			board[x][y] = "*"

		if res != "try again":
			
			return board
	
def check_sink(board,x,y):

	#figure out what ship was hit
	if board[x][y] == "A":
		ship = "Aircraft Carrier"
	elif board[x][y] == "B":
		ship = "Battleship"
	elif board[x][y] == "S":
		ship = "Submarine" 
	elif board[x][y] == "D":
		ship = "Destroyer"
	elif board[x][y] == "P": 
		ship = "Patrol Boat"
	
	#mark cell as hit and check if sunk
	board[-1][ship] -= 1
	if board[-1][ship] == 0:
		print ship + " Sunk"
		

def check_win(board):
	
	#simple for loop to check all cells in 2d board
	#if any cell contains a char that is not a hit or a miss return false
	for i in range(10):
		for j in range(10):
			if board[i][j] != -1 and board[i][j] != '*' and board[i][j] != '$':
				return False
	return True

def main():

	#types of ships
	ships = {"Aircraft Carrier":5,
		     "Battleship":4,
 		     "Submarine":3,
		     "Destroyer":3,
		     "Patrol Boat":2}

	#setup blank 10x10 board
	board = []
	for i in range(10):
		board_row = []
		for j in range(10):
			board_row.append(-1)
		board.append(board_row)

	#setup user and computer boards
	user_board = copy.deepcopy(board)
	comp_board = copy.deepcopy(board)

	#add ships as last element in the array
	user_board.append(copy.deepcopy(ships))
	comp_board.append(copy.deepcopy(ships))

	#ship placement
	user_board = user_place_ships(user_board,ships)
	comp_board = computer_place_ships(comp_board,ships)

	#game main loop
	while(1):

		#user move
		print_board("c",comp_board)
		comp_board = user_move(comp_board)

		#check if user won
		if comp_board == "WIN":
			print "User WON! :)"
			quit()
			
		#display current computer board
		print_board("c",comp_board)
		raw_input("To end user turn hit ENTER")

		#computer move
		user_board = computer_move(user_board)
		
		#check if computer move
		if user_board == "WIN":
			print "Computer WON! :("
			quit()
			
		#display user board
		print_board("u",user_board)
		raw_input("To end computer turn hit ENTER")
	
if __name__=="__main__":
	main()

1 comment

Grant Jenks 4 years, 4 months ago  # | flag

Fun to play and entertaining. Reminds of younger days. I have developed a library of Free Python Games at http://www.grantjenks.com/docs/freegames/ Would you consider contributing your game? I would be glad to include it myself with your permission. Also would need some simplifying but I think it's fun.