Puzzle Game in Python

Puzzle Game in Python

Who has not played a single puzzle game in their childhood? Probably everyone played once at least. Today, in this article, we will build a Puzzle Game in Python using the pygame library. Imagine a puzzle game at your fingertips that you can play anytime, anywhere. There are various puzzle games and today we will be building a game that revolves around arranging the number from 1-15 in a grid of 16 blocks.

We strongly believe this tutorial will be the perfect learning source. We have also added a dedicated section wherein you can get some reference links relating to Python, this topic is Puzzle Game in Python and the libraries that we use. Besides that, we have also added a list of top-level Tkinter projects that one must develop. Those projects are explained in detail along with source code and output. Now, let us start with our amazing project for today “Puzzle Game in Python using PyGame”. First of all, we will take a basic idea of what is the main logic behind the game, then we will move on to the features that we will add to this project, and then we will move on to the actual coding part for this project Puzzle Game In Python

Basic Idea

In Puzzle Game In Python, we will simply be developing a game wherein the player will have to arrange the blocks numbered from 1 to 15 in ascending order. The game will display 16 blocks and one block will be empty so that the player will be able to move the blocks. Once all the blocks are arranged then the game will get over. Now that we have a basic idea of what exactly needs to be developed, let us move on to the list of mandatory features that need to be there on the window of Puzzle Game in Python

Features of the Puzzle Game in Python

  • Auto shuffling of Puzzle Game In Python
  • Option for Resetting, New Game, and Auto Solving
  • Blocks of Puzzle Game In Python can be moved using Arrow keys or Mouse

Complete Code for Puzzle Game in Python

# baic library imports pygame and random
import pygame
import sys
import random
from pygame.locals import *

# this section holds all the variables that we will use in Puzzle Game In Python
w_of_board = 4  # total number of columns in the board of Puzzle Game In Python
h_of_board = 4  # total number of rows in the board
block_size = 80
win_width = 640
win_height = 480
FPS = 30
BLANK = None

# this is bascially for managing the different colors of the component
# we have also used variables for mantaining the text size in Puzzle Game In Python
BLACK = (0,   0,   0)
WHITE = (255, 255, 255)
BRIGHTBLUE = (0,  50, 255)
DARKTURQUOISE = (255, 255, 255)
BLUE = (0,  0, 0)
GREEN = (0, 128,   0)
RED = (255, 0, 0)


# this is to leave the space on both the sides of the block
XMARGIN = int((win_width - (block_size * w_of_board + (w_of_board - 1))) / 2)
YMARGIN = int((win_height - (block_size * h_of_board + (h_of_board - 1))) / 2)

# these are the variables for handling the keyboard keys
UP = 'up'
DOWN = 'down'
LEFT = 'left'
RIGHT = 'right'

# this is the main function

def main():

    FPSCLOCK = pygame.time.Clock()
    DISPLAYSURF = pygame.display.set_mode((win_width, win_height))
    # we gave a title using set_caption function in pygame
    pygame.display.set_caption('Slide Puzzle - CopyAssignment')
    BASICFONT = pygame.font.Font('freesansbold.ttf', BASICFONTSIZE)

    # these variables stores the various options that will be displayed to the right side of our main grid
    # these below only handles the design part of the options
    RESET_SURF, RESET_RECT = makeText(
        'Reset',    TEXT, BGCOLOR, win_width - 120, win_height - 310)
    NEW_SURF,   NEW_RECT = makeText(
        'New Game', TEXT, BGCOLOR, win_width - 120, win_height - 280)
    SOLVE_SURF, SOLVE_RECT = makeText(
        'Solve',    TEXT, BGCOLOR, win_width - 120, win_height - 250)

    mainBoard, solutionSeq = generateNewPuzzle(80)
    # this is simply the board that is same as that of the solved board in Puzzle Game In Python
    # bascially the game will shuffle all blocks of the solved game
    SOLVEDBOARD = start_playing()
    # a list that tracks the moves made from the solved configuration
    allMoves = []
    # main game loop
    while True:
        slideTo = None
        # the below variable contains the message to show in the top left corner.
        msg = 'Click a block or press arrow keys to slide the block.'
        if mainBoard == SOLVEDBOARD:
            msg = 'Solved!'

        drawBoard(mainBoard, msg)

        # the below for loop is to handle the various events of keyboard
        for event in pygame.event.get():
            if event.type == MOUSEBUTTONUP:
                spotx, spoty = getSpotClicked(
                    mainBoard, event.pos[0], event.pos[1])

                if (spotx, spoty) == (None, None):
                    # this is to check if the user clicked on an option button
                    if RESET_RECT.collidepoint(event.pos):
                        # this below linw will come into action of the user clicked on Reset button
                        rst_animation(mainBoard, allMoves)
                        allMoves = []
                    elif NEW_RECT.collidepoint(event.pos):
                        # this below linw will come into action of the user clicked on New Game button
                        mainBoard, solutionSeq = generateNewPuzzle(80)
                        allMoves = []
                    elif SOLVE_RECT.collidepoint(event.pos):
                        # this below linw will come into action of the user clicked on Solve button
                        rst_animation(mainBoard, solutionSeq + allMoves)
                        allMoves = []
                    # this else block in Puzzle Game In Python is just to check that the moved tile has a blank
                    blankx, blanky = getBlankPosition(mainBoard)
                    if spotx == blankx + 1 and spoty == blanky:
                        slideTo = LEFT
                    elif spotx == blankx - 1 and spoty == blanky:
                        slideTo = RIGHT
                    elif spotx == blankx and spoty == blanky + 1:
                        slideTo = UP
                    elif spotx == blankx and spoty == blanky - 1:
                        slideTo = DOWN

            elif event.type == KEYUP:
                # this elif block will handle the checking if the user pressed a key to slide a tile
                if event.key in (K_LEFT, K_a) and isValidMove(mainBoard, LEFT):
                    slideTo = LEFT
                elif event.key in (K_RIGHT, K_d) and isValidMove(mainBoard, RIGHT):
                    slideTo = RIGHT
                elif event.key in (K_UP, K_w) and isValidMove(mainBoard, UP):
                    slideTo = UP
                elif event.key in (K_DOWN, K_s) and isValidMove(mainBoard, DOWN):
                    slideTo = DOWN
        # this block will handle the fucntionality of displaying the message for controls
        if slideTo:
            # show slide on screen
                mainBoard, slideTo, 'Click a block or press arrow keys to slide the block.', 8)
            take_turn(mainBoard, slideTo)

def terminate():

def check_exit_req():
    # get all the QUIT events
    for event in pygame.event.get(QUIT):
        # terminate() will kill all the events. terminate if any QUIT events are present
    # this for loop will get all the KEYUP events
    for event in pygame.event.get(KEYUP):
        if event.key == K_ESCAPE:
            # if the user presses the ESC key then it will terminate the session and if the KEYUP event was for the Esc key
        # put the other KEYUP event objects back

def start_playing():
    # Return a board structure with blocks in the solved state.
    counter = 1
    board = []
    for x in range(w_of_board):
        column = []
        for y in range(h_of_board):
            counter += w_of_board
        counter -= w_of_board * (h_of_board - 1) + w_of_board - 1

    board[w_of_board-1][h_of_board-1] = BLANK
    return board

def getBlankPosition(board):
    # Return the x and y of board coordinates of the blank space.
    for x in range(w_of_board):
        for y in range(h_of_board):
            if board[x][y] == BLANK:
                return (x, y)

def take_turn(board, move):
    blankx, blanky = getBlankPosition(board)

    if move == UP:
        board[blankx][blanky], board[blankx][blanky +
                                             1] = board[blankx][blanky + 1], board[blankx][blanky]
    elif move == DOWN:
        board[blankx][blanky], board[blankx][blanky -
                                             1] = board[blankx][blanky - 1], board[blankx][blanky]
    elif move == LEFT:
        board[blankx][blanky], board[blankx +
                                     1][blanky] = board[blankx + 1][blanky], board[blankx][blanky]
    elif move == RIGHT:
        board[blankx][blanky], board[blankx -
                                     1][blanky] = board[blankx - 1][blanky], board[blankx][blanky]

def isValidMove(board, move):
    blankx, blanky = getBlankPosition(board)
    return (move == UP and blanky != len(board[0]) - 1) or \
           (move == DOWN and blanky != 0) or \
           (move == LEFT and blankx != len(board) - 1) or \
           (move == RIGHT and blankx != 0)

def ramdom_moves(board, lastMove=None):
    # start with a full list of all four moves
    validMoves = [UP, DOWN, LEFT, RIGHT]

    # remove moves from the list as they are disqualified
    if lastMove == UP or not isValidMove(board, DOWN):
    if lastMove == DOWN or not isValidMove(board, UP):
    if lastMove == LEFT or not isValidMove(board, RIGHT):
    if lastMove == RIGHT or not isValidMove(board, LEFT):

    # this will perform the return nad it will return a random move from the list of remaining moves
    return random.choice(validMoves)

def getLeftTopOfTile(block_x, block_y):
    left = XMARGIN + (block_x * block_size) + (block_x - 1)
    top = YMARGIN + (block_y * block_size) + (block_y - 1)
    return (left, top)

def getSpotClicked(board, x, y):
    # from the x & y pixel coordinates, this for loop below will get the x & y board coordinates
    for block_x in range(len(board)):
        for block_y in range(len(board[0])):
            left, top = getLeftTopOfTile(block_x, block_y)
            tileRect = pygame.Rect(left, top, block_size, block_size)
            if tileRect.collidepoint(x, y):
                return (block_x, block_y)
    return (None, None)

def draw_block(block_x, block_y, number, adjx=0, adjy=0):
    # draw a tile at board coordinates block_x and block_y, optionally a few
    left, top = getLeftTopOfTile(block_x, block_y)
    pygame.draw.rect(DISPLAYSURF, TILECOLOR, (left + adjx,
                     top + adjy, block_size, block_size))
    text_renderign = BASICFONT.render(str(number), True, TEXTCOLOR)
    text_in_rect = text_renderign.get_rect()
    text_in_rect.center = left + \
        int(block_size / 2) + adjx, top + int(block_size / 2) + adjy
    DISPLAYSURF.blit(text_renderign, text_in_rect)

def makeText(text, color, bgcolor, top, left):
    # create the Surface and Rect objects for some text.
    text_renderign = BASICFONT.render(text, True, color, bgcolor)
    text_in_rect = text_renderign.get_rect()
    text_in_rect.topleft = (top, left)
    return (text_renderign, text_in_rect)

# this function will draw the board wherein the player can play.
# it holds the code for displaying different color and logic behind the game

def drawBoard(board, message):
    if message:
        text_renderign, text_in_rect = makeText(
            message, MESSAGECOLOR, BGCOLOR, 5, 5)
        DISPLAYSURF.blit(text_renderign, text_in_rect)

    for block_x in range(len(board)):
        for block_y in range(len(board[0])):
            if board[block_x][block_y]:
                draw_block(block_x, block_y, board[block_x][block_y])

    left, top = getLeftTopOfTile(0, 0)
    width = w_of_board * block_size
    height = h_of_board * block_size
    pygame.draw.rect(DISPLAYSURF, BORDERCOLOR, (left - 5,
                     top - 5, width + 11, height + 11), 4)


# this function is to handle the animation that are displayed when a user starts a new Game
# a user can see the sliding animation over the blocks
# this is made possible using the below function

def sliding_animation(board, direction, message, animationSpeed):
    blankx, blanky = getBlankPosition(board)
    if direction == UP:
        move_in_xaxis = blankx
        move_in_yaxis = blanky + 1
    elif direction == DOWN:
        move_in_xaxis = blankx
        move_in_yaxis = blanky - 1
    elif direction == LEFT:
        move_in_xaxis = blankx + 1
        move_in_yaxis = blanky
    elif direction == RIGHT:
        move_in_xaxis = blankx - 1
        move_in_yaxis = blanky

    # prepare the base surface
    drawBoard(board, message)
    baseSurf = DISPLAYSURF.copy()
    # draw a blank space over the moving block on the baseSurf Surface.
    take_left, take_top = getLeftTopOfTile(move_in_xaxis, move_in_yaxis)
    pygame.draw.rect(baseSurf, BGCOLOR, (take_left,
                     take_top, block_size, block_size))

    for i in range(0, block_size, animationSpeed):
        # this is to handle the animation of the tile sliding over
        DISPLAYSURF.blit(baseSurf, (0, 0))
        if direction == UP:
            draw_block(move_in_xaxis, move_in_yaxis,
                       board[move_in_xaxis][move_in_yaxis], 0, -i)
        if direction == DOWN:
            draw_block(move_in_xaxis, move_in_yaxis,
                       board[move_in_xaxis][move_in_yaxis], 0, i)
        if direction == LEFT:
            draw_block(move_in_xaxis, move_in_yaxis,
                       board[move_in_xaxis][move_in_yaxis], -i, 0)
        if direction == RIGHT:
            draw_block(move_in_xaxis, move_in_yaxis,
                       board[move_in_xaxis][move_in_yaxis], i, 0)


def generateNewPuzzle(numSlides):
    # this to display the animation of blocks
    sequence = []
    board = start_playing()
    drawBoard(board, '')
    # we used time.wait() to pause 500 milliseconds for effect
    lastMove = None
    for i in range(numSlides):
        move = ramdom_moves(board, lastMove)
        sliding_animation(board, move, 'Generating new puzzle...',
                          animationSpeed=int(block_size / 3))
        take_turn(board, move)
        lastMove = move
    return (board, sequence)

def rst_animation(board, allMoves):
    # make all of the moves in reverse
    reverse_moves = allMoves[:]

    for move in reverse_moves:
        if move == UP:
            opp_moves = DOWN
        elif move == DOWN:
            opp_moves = UP
        elif move == RIGHT:
            opp_moves = LEFT
        elif move == LEFT:
            opp_moves = RIGHT
        sliding_animation(board, opp_moves, '',
                          animationSpeed=int(block_size / 2))
        take_turn(board, opp_moves)

# this is the call to main fucntion
if __name__ == '__main__':


Output - Puzzle Game in Python
Puzzle Game in Python started


The tutorial for making a Puzzle Game in Python using PyGame is now finished. In this lecture, we did our utmost to completely explain each idea. We really hope that this essay will be a useful resource for you. It is now up to you to expand this Puzzle Game in Python using PyGame by adding more difficult routines. We have already created several fundamental to intermediate-level functions while utilizing a variety of libraries.

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