lab3 start

README.md

@@ -34,3 +34,20 @@ Code is required in the following locations:
 |``utilities.py``   |``draw_ships:18``      | draw ships on a board |
 |``player_state.py``| ``place_ships:43``    | randomly place ships  |
 |``sprites.py``     | ``--global--:28``     | create sprite objects |
+
+
+Lab 3: Playing the Computer
+---------------------------
+By the end of this lab you should be able to play a game of battleship against
+your computer. Code is required in the following locations:
+
+| File Name          | Function:Line     | Description                    |
+|--------------------|-------------------|--------------------------------|
+|``human.py``        | ``get_guess:26``  | get a guess from the keyboard  |
+|``computer.py``     | ``__init__:20``   | initialize _unguessed_spaces   |
+|``computer.py``     | ``get_guess:34``  | make a random guess            |
+|``engine.py``       | ``play:55``       | run player2's turn             |
+|``utilities.py``    | ``draw_hits:26``  | add hit sprites to a board     |
+|``utilities.py``    | ``draw_misses:35``| add miss sprites to a board    |
+|``player_state.py`` | ``all_sunk:72``   | determine if a player has lost |
+|``ship.py``         | ``is_hit:38``     | determine if a ship is hit     |

engine.py

+import pygame
+import sys
+from pygame.locals import *
+
+import players
+import utilities
+
+
+class Engine:
+
+    def __init__(self, player1: players.Player, board1, player2: players.Player, board2, alert):
+        self.player1 = player1
+        self.board1 = board1
+        self.player2 = player2
+        self.board2 = board2
+        self.alert = alert
+
+    def play(self) -> players.Player:
+        player2_hits = []
+        player2_misses = []
+        player1_hits = []
+        player1_misses = []
+
+        while True:
+            # ==== Player1's turn ====
+            guess = self.player1.get_guess(self.alert)
+            self.player2.send_guess(guess)
+
+            player2_state = self.player2.get_state()
+            self.player1.send_state(player2_state)
+
+            if player2_state.is_hit():
+                player2_hits.append(guess)
+            else:
+                player2_misses.append(guess)
+
+            utilities.draw_ships(self.board2, player2_state.sunk_ships())
+            utilities.draw_hits(self.board2, player2_hits)
+            utilities.draw_misses(self.board2, player2_misses)
+            self.board2.draw()
+            pygame.display.update()
+
+            # Did Player1 win?
+            if player2_state.all_sunk():
+                return self.player1
+
+            # ==== Player2's turn ====
+
+            # --------- BEGIN YOUR CODE ----------
+
+            # Following the pattern above implement the logic for Player2's turn
+
+            # --------- END YOUR CODE ----------
+
+            # process event queue, quit if user clicks 'X' button
+            # if you don't do this the game will appear frozen
+            for event in pygame.event.get():
+                if event.type == QUIT:
+                    pygame.quit()
+                    sys.exit()

main.py

@@ -2,6 +2,7 @@ import pygame
 from pygame.locals import *
 import sys
 
+import engine
 import players
 import sprites
 import colors
@@ -13,11 +14,12 @@ NBLOCKS = 11
 TOP_MARGIN = 30
 PADDING = 10
 
+screen: pygame.Surface = pygame.display.set_mode(((BLOCK_SIZE * NBLOCKS) * 2 + PADDING * 3,
+                                                  BLOCK_SIZE * NBLOCKS + TOP_MARGIN + PADDING))
+
 
 def main():
     pygame.init()
-    screen: pygame.Surface = pygame.display.set_mode(((BLOCK_SIZE * NBLOCKS) * 2 + PADDING * 3,
-                                                      BLOCK_SIZE * NBLOCKS + TOP_MARGIN + PADDING))
     screen.fill(colors.screen_bkgd)
     pygame.display.set_caption('USNA Battleship')
     sprites.initialize()
@@ -48,23 +50,36 @@ def main():
     utilities.draw_ships(my_board, me.state.all_ships())
     my_board.draw()
 
+    them = players.Computer()
     their_board.initialize()
     their_board.draw()
 
     pygame.display.update()
 
+    # Create an engine to run the game
+    game = engine.Engine(me, my_board, them, their_board, display_message)
+
+    # Play battleship!
+    winner = game.play()
+
+    # Display the winner in a message box
+    if winner == me:
+        display_message(screen, "You Win!")
+    elif winner == them:
+        display_message(screen, "You Lose!")
+
     # wait until the user closes the game
     while True:
         for event in pygame.event.get():
             if event.type == QUIT:
-                _display_message(screen, "Bye!")
+                display_message("Bye!")
                 pygame.display.update()
                 pygame.time.wait(1000)
                 pygame.quit()
                 sys.exit()
 
 
-def _display_message(screen: pygame.Surface, msg: str):
+def display_message(msg: str):
     """
     Display [msg] in the message box sprite in the center of the screen
     """
@@ -72,6 +87,9 @@ def _display_message(screen: pygame.Surface, msg: str):
     # make a copy of the msg_box sprite because we need to edit it
     box = sprites.msg_box.copy()
 
+    # save a copy of the original screen
+    backup = screen.copy()
+
     # --------- BEGIN YOUR CODE ----------
 
     # create a text object with size 42 font of [msg]
@@ -85,6 +103,13 @@ def _display_message(screen: pygame.Surface, msg: str):
 
     # --------- END YOUR CODE ----------
 
+    # wait 1 second
+    pygame.time.wait(1000)
+
+    # restore the original screen
+    screen.blit(backup, (0, 0))
+    pygame.display.update()
+
 
 if __name__ == "__main__":
     main()

players/__init__.py

+from .computer import Computer
 from .human import Human
 from .player import Player

players/computer.py

+from random import randint
+import time
+from typing import List, Tuple, Callable
+
+from .player import Player
+from .player_state import PlayerState
+
+
+class Computer(Player):
+    """ A computer player"""
+
+    def __init__(self):
+        self.priority = 1
+        # list of board spaces that have not been guessed
+        # eg: _unguessed_spaces = [(0,0), (0,1), (0,2),...]
+        self._unguessed_spaces = []
+
+        # --------- BEGIN YOUR CODE ----------
+
+        # Populate _unguessed_spaces with every possible board space
+        # Hint: use two nested for loops
+
+        # --------- END YOUR CODE ----------
+
+        self.state = PlayerState()
+        # the debug flag prints ship locations to the terminal
+        self.state.place_ships(debug=False)
+
+    def get_state(self):
+        return self.state
+
+    def get_guess(self, alert: Callable[[str], None]) -> Tuple[int, int]:
+        # --------- BEGIN YOUR CODE ----------
+
+        # guess a random entry from _unguessed_spaces
+
+        # remove the guess from _unguessed_spaces
+
+        # enforce a short delay to make the computer
+        # appear to "think" about its guess
+        time.sleep(0.5)
+
+        return 0, 0  # <-- remove this!
+
+        # --------- END YOUR CODE ----------
+
+    def send_guess(self, guess: Tuple[int, int]):
+        self.state.add_guess(guess)
+

players/human.py

 import string
-from typing import Tuple
+from typing import Tuple, Callable
 
 from .player import Player
 from .player_state import PlayerState
-
+import utilities
 
 class Human(Player):
     """ A human player"""
@@ -13,3 +13,28 @@ class Human(Player):
         self.state = PlayerState()
         # add ships to the board randomly
         self.state.place_ships()
+
+    def get_state(self, all_ships=False):
+        return self.state
+
+    def get_guess(self, alert: Callable[[str], None]) -> Tuple[int, int]:
+        """
+        Get a row,column guess from the user. The user should enter a lower case letter
+        followed by a number.
+        """
+
+        # --------- BEGIN YOUR CODE ----------
+        # Use the get_key_input from the utilities module to read
+        # keyboard input, return a numeric tuple indicating the coordinates (row,col) of the user's guess
+
+        # If the user enters anything besides a-f for the row, use the alert function
+        #  to display "bad row" and let the user make a new guess
+        # If the user enters anything besides 0-9 for the column, use the alert function
+        #  to display "bad column" and let the user make a new guess (starting with the row)
+
+        return 0, 0  # <-- remove this!
+
+        # --------- END YOUR CODE ----------
+
+    def send_guess(self, guess: Tuple[int, int]):
+        self.state.add_guess(guess)

players/player.py

-from typing import Tuple
+from typing import Tuple, Callable
 from .player_state import PlayerState
 
 
@@ -9,7 +9,7 @@ class Player:
     def send_state(self, state: PlayerState, reveal=False):
         pass
 
-    def get_guess(self) -> Tuple[int, int]:
+    def get_guess(self, alert: Callable[[str], None]) -> Tuple[int, int]:
         pass
 
     def send_guess(self, guess: Tuple[int, int]):

players/player_state.py

@@ -56,6 +56,29 @@ class PlayerState:
                 print("")
             print("=" * 10)
 
+    def add_guess(self, guess):
+        for ship in self._ships:
+            if ship.is_hit(guess):
+                self._hits.append(guess)
+                self._hit = True
+                return
+        self._misses.append(guess)
+        self._hit = False
+
+    def is_hit(self) -> bool:
+        return self._hit
+
+    def all_sunk(self) -> bool:
+        # --------- BEGIN YOUR CODE ----------
+
+        # return True if all of the ships are sunk
+        # return False otherwise
+        return False  # <-- remove this!
+
+        # --------- END YOUR CODE ----------
+
     def all_ships(self):
         return self._ships
 
+    def sunk_ships(self):
+        return [ship for ship in self._ships if ship.is_sunk()]

ship.py

-
-
 class Ship:
 
     def __init__(self, length: int, row: int,
@@ -29,4 +27,22 @@ class Ship:
         self.col = col
         self.is_vertical = is_vertical
 
+        # keep track of which parts of the ship are hit
+        self._hits = []
+
+    def is_hit(self, guess):
+        # ignore duplicate guesses
+        if guess in self._hits:
+            return True
+
+        # --------- BEGIN YOUR CODE ----------
+
+        # check if the guess corresponds to part of the ship
+        # if so add the guess to _hits and return True
+        # otherwise return False
+
+        return False  # <-- remove this!
+        # --------- END YOUR CODE ----------
 
+    def is_sunk(self):
+        return len(self._hits) == self.length

utilities.py

-from typing import List
+from typing import List, Tuple
 import pygame
 
 import sprites
 import ship
 import game_board
 
+import sys
+from pygame import QUIT
+
 FONT_PATH = 'assets/FutilePro.ttf'
 
 
@@ -21,3 +24,31 @@ def draw_ships(board: game_board.GameBoard, ships: List[ship.Ship]):
     pass  # <-- remove this
 
     # --------- END YOUR CODE ----------
+
+
+def draw_hits(board: game_board.GameBoard, hits: List[Tuple[int, int]]):
+    # --------- BEGIN YOUR CODE ----------
+
+    # add a "hit" sprite at every hit
+    pass  # <-- remove this
+
+    # --------- END YOUR CODE ----------
+
+
+def draw_misses(board: game_board.GameBoard, misses: List[Tuple[int, int]]):
+    # --------- BEGIN YOUR CODE ----------
+
+    # add a "miss" sprite at every miss
+    pass  # <-- remove this
+
+    # --------- END YOUR CODE ----------
+
+
+def get_key_input() -> str:
+    while True:
+        for event in pygame.event.get():
+            if event.type == QUIT:
+                pygame.quit()
+                sys.exit()
+            if event.type == pygame.KEYDOWN:
+                return event.unicode