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Author: rammya29

Diff for: PyGamesScripts/Reversegram/reversegram_game.py

@@ -0,0 +1,292 @@
+# Import the required modules
+
+import random
+import sys
+
+WIDTH = 8 # Board is 8 spaces wide.
+HEIGHT = 8 # Board is 8 spaces tall.
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def drawBoard(board): # Print the board passed to this function. Return None.
+    print('  12345678')
+    print(' +--------+')
+    for y in range(HEIGHT):
+        print('%s|' % (y+1), end='')
+        for x in range(WIDTH):
+            print(board[x][y], end='')
+        print('|%s' % (y+1))
+        print(' +--------+')
+        print('  12345678')
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def getNewBoard():
+     # Create a brand-new, blank board data structure.
+    board = []
+    for i in range(WIDTH):
+        board.append([' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '])
+    return board
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def isValidMove(board, tile, xstart, ystart):
+     # Return False if the player's move on space xstart, ystart is invalid.
+     # If it is a valid move, return a list of spaces that would become the player's if they made a move here.
+    if board[xstart][ystart] != ' ' or not isOnBoard(xstart, ystart):
+        return False
+    if tile == 'X':
+        otherTile = 'O'
+    else:
+        otherTile = 'X'
+
+    tilesToFlip = []
+    for xdirection, ydirection in [[0, 1], [1, 1], [1, 0], [1, -1],[0, -1], [-1, -1], [-1, 0], [-1, 1]]:
+        x, y = xstart, ystart
+        x += xdirection # First step in the x direction
+        y += ydirection # First step in the y direction
+        while isOnBoard(x, y) and board[x][y] == otherTile:
+             # Keep moving in this x & y direction.
+            x += xdirection
+            y += ydirection
+            if isOnBoard(x, y) and board[x][y] == tile:
+                 # There are pieces to flip over. Go in the reverse direction until we reach the original space, noting all the tiles along the way.
+                while True:
+                    x -= xdirection
+                    y -= ydirection
+                    if x == xstart and y == ystart:
+                        break
+                    tilesToFlip.append([x, y])
+ 
+    if len(tilesToFlip) == 0: # If no tiles were flipped, this is not a valid move.
+        return False
+    return tilesToFlip
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+ 
+def isOnBoard(x, y):
+     # Return True if the coordinates are located on the board.
+    return x >= 0 and x <= WIDTH - 1 and y >= 0 and y <= HEIGHT - 1
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def getBoardWithValidMoves(board, tile):
+      # Return a new board with periods marking the valid moves the player can make.
+    boardCopy = getBoardCopy(board)
+    for x, y in getValidMoves(boardCopy, tile):
+        boardCopy[x][y] = '.'
+    return boardCopy
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+ 
+def getValidMoves(board, tile):
+      # Return a list of [x,y] lists of valid moves for the given player on the given board.
+    validMoves = []
+    for x in range(WIDTH):
+        for y in range(HEIGHT):
+            if isValidMove(board, tile, x, y) != False:
+                validMoves.append([x, y])
+    return validMoves
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def getScoreOfBoard(board):
+     # Determine the score by counting the tiles. Return a dictionary with keys 'X' and 'O'.
+    xscore = 0
+    oscore = 0
+    for x in range(WIDTH):
+        for y in range(HEIGHT):
+            if board[x][y] == 'X':
+                xscore += 1
+            if board[x][y] == 'O':
+                oscore += 1
+    return {'X':xscore, 'O':oscore}
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def enterPlayerTile():
+     # Let the player enter which tile they want to be.
+      # Return a list with the player's tile as the first item and the computer's tile as the second.
+    tile = ''
+    while not (tile == 'X' or tile == 'O'):
+        print('Do you want to be X or O?')
+        tile = input().upper()
+
+      # The first element in the list is the player's tile, and the second is the computer's tile.
+    if tile == 'X':
+        return ['X', 'O']
+    else:
+        return ['O', 'X']
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def whoGoesFirst():
+     # Randomly choose who goes first.
+    if random.randint(0, 1) == 0:
+        return 'computer'
+    else:
+        return 'player'
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+    
+def makeMove(board, tile, xstart, ystart):
+     # Place the tile on the board at xstart, ystart and flip any of the opponent's pieces.
+     # Return False if this is an invalid move; True if it is valid.
+     tilesToFlip = isValidMove(board, tile, xstart, ystart)
+
+     if tilesToFlip == False:
+         return False
+
+     board[xstart][ystart] = tile
+     for x, y in tilesToFlip:
+         board[x][y] = tile
+     return True
+
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def getBoardCopy(board):
+     # Make a duplicate of the board list and return it.
+    boardCopy = getNewBoard()
+
+    for x in range(WIDTH):
+        for y in range(HEIGHT):
+            boardCopy[x][y] = board[x][y]
+
+    return boardCopy
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def isOnCorner(x, y):
+     # Return True if the position is in one of the four corners.
+    return (x == 0 or x == WIDTH - 1) and (y == 0 or y == HEIGHT - 1)
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def getPlayerMove(board, playerTile):
+     # Let the player enter their move.
+     # Return the move as [x, y] (or return the strings 'hints' or 'quit').
+    DIGITS1TO8 = '1 2 3 4 5 6 7 8'.split()
+    while True:
+        print('Enter your move, "quit" to end the game, or "hints" to toggle hints.')
+        move = input().lower()
+        if move == 'quit' or move == 'hints':
+            return move
+
+        if len(move) == 2 and move[0] in DIGITS1TO8 and move[1] in DIGITS1TO8:
+            x = int(move[0]) - 1
+            y = int(move[1]) - 1
+            if isValidMove(board, playerTile, x, y) == False:
+                continue
+            else:
+                break
+        else:
+            print('That is not a valid move. Enter the column (1-8) and then the row (1-8).')
+            print('For example, 81 will move on the top-right corner.')
+
+    return [x, y]
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def getComputerMove(board, computerTile):
+     # Given a board and the computer's tile, determine where to
+     # move and return that move as an [x, y] list.
+    possibleMoves = getValidMoves(board, computerTile)
+    random.shuffle(possibleMoves) # Randomize the order of the moves.
+
+     # Always go for a corner if available.
+    for x, y in possibleMoves:
+        if isOnCorner(x, y):
+            return [x, y]
+
+     # Find the highest-scoring move possible.
+    bestScore = -1
+    for x, y in possibleMoves:
+        boardCopy = getBoardCopy(board)
+        makeMove(boardCopy, computerTile, x, y)
+        score = getScoreOfBoard(boardCopy)[computerTile]
+        if score > bestScore:
+            bestMove = [x, y]
+            bestScore = score
+    return bestMove
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def printScore(board, playerTile, computerTile):
+    scores = getScoreOfBoard(board)
+    print('You: %s points. Computer: %s points.' % (scores[playerTile], scores[computerTile]))
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+def playGame(playerTile, computerTile):
+    showHints = False
+    turn = whoGoesFirst()
+    print('The ' + turn + ' will go first.')
+
+    # Clear the board and place starting pieces.
+    board = getNewBoard()
+    board[3][3] = 'X'
+    board[3][4] = 'O'
+    board[4][3] = 'O'
+    board[4][4] = 'X'
+
+    while True:
+        playerValidMoves = getValidMoves(board, playerTile)
+        computerValidMoves = getValidMoves(board, computerTile)
+
+        if playerValidMoves == [] and computerValidMoves == []:
+            return board # No one can move, so end the game.
+
+        elif turn == 'player': # Player's turn
+            if playerValidMoves != []:
+                if showHints:
+                    validMovesBoard = getBoardWithValidMoves(board,playerTile)
+                    drawBoard(validMovesBoard)
+                else:
+                    drawBoard(board)
+                printScore(board, playerTile, computerTile)
+
+                move = getPlayerMove(board, playerTile)
+                if move == 'quit':
+                    print('Thanks for playing!')
+                    sys.exit() # Terminate the program.
+                elif move == 'hints':
+                    showHints = not showHints
+                    continue
+                else:
+                    makeMove(board, playerTile, move[0], move[1])
+            turn = 'computer'
+
+        elif turn == 'computer': # Computer's turn
+            if computerValidMoves != []:
+                drawBoard(board)
+                printScore(board, playerTile, computerTile)
+
+                input('Press Enter to see the computer\'s move.')
+                move = getComputerMove(board, computerTile)
+                makeMove(board, computerTile, move[0], move[1])
+            turn = 'player'
+
+#------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+print('Welcome to Reversegam!')
+
+playerTile, computerTile = enterPlayerTile()
+
+while True:
+    finalBoard = playGame(playerTile, computerTile)
+
+     # Display the final score.
+    drawBoard(finalBoard)
+    scores = getScoreOfBoard(finalBoard)
+    print('X scored %s points. O scored %s points.' % (scores['X'], scores['O']))
+    if scores[playerTile] > scores[computerTile]:
+        print('You beat the computer by %s points! Congratulations!' %(scores[playerTile] - scores[computerTile]))
+    elif scores[playerTile] < scores[computerTile]:
+        print('You lost. The computer beat you by %s points.' %(scores[computerTile] - scores[playerTile]))
+    else:
+        print('The game was a tie!')
+
+    print('Do you want to play again? (yes or no)')
+    if not input().lower().startswith('y'):
+        break