Match Game

import os
from random import shuffle, randint
from guizero import App, Box, Picture, PushButton, Text, TextBox, info, yesno

# global variables
GRID_SIZE   = 3
score       = 0
TimeLeft    = 30
emojis_dir  = "emojis"
emojis      = []
buttons     = []
pictures    = []

# Event Handlers

def imageClick(matched):
    global score
    if matched:
        lblResult.value = "Well done! 5 seconds gained!"
        score += 1
        txtTimeLeft.value = int(txtTimeLeft.value) + 5
        lblScore.value = f"Score: {score}"
        setupRound()
    else:
        lblResult.value = f"Incorrect! You have lost 2 seconds!"
        txtTimeLeft.value = int(txtTimeLeft.value) - 2

def btnInfoClicked():
    info('HELP','There is exactly one pair of matching images. \nClick on one of the matching pairs. \nEvery incorrect click loses 2 seconds.\nEvery match scores 1 point plus gain 5 seconds of time.')

# Helper Functions

def setupRound():
    global buttons, pictures, emojis, score

    # load emoji filenames
    emojis = [os.path.join(emojis_dir, f) for f in os.listdir(emojis_dir) if os.path.isfile(os.path.join(emojis_dir, f))]
    # shuffle the emojis
    shuffle(emojis)

    # for each picture and button in the list assign an emoji to its image feature
    for button in pictures:
        button.image = emojis.pop()
        button.update_command(imageClick, [False])

    for button in buttons:
        button.image = emojis.pop()
        button.update_command(imageClick, [False])

    # Select new image and place in both grids
    newImage = emojis.pop()

    pos = randint(0,len(buttons)-1)
    buttons[pos].image = newImage
    buttons[pos].update_command(imageClick, [True])

    pos = randint(0,len(pictures)-1)
    pictures[pos].image = newImage
    pictures[pos].update_command(imageClick, [True])

def decreaseTime():
    global score
    txtTimeLeft.value = int(txtTimeLeft.value) - 1
    if txtTimeLeft.value == '0':
        txtTimeLeft.cancel(decreaseTime)
        if yesno('OUT OF TIME',f'Game over. \nYour final score was {score}.\nPlay again?',app) == False:
            app.destroy()
        else:
            setupRound()
            txtTimeLeft.value = TimeLeft
            txtTimeLeft.repeat(1000,decreaseTime)
            score = 0
            lblScore.value = f"Score: {score}"

# .......................................................................................

# setup the app
app = App("emoji match", width = GRID_SIZE*200, height = 100+GRID_SIZE*100, bg = 'white')

# create a box for information
infoBox = Box(app, width = 'fill', align = 'top', height = 30)
infoBox.bg = 'black'
lblInstructions = PushButton(infoBox, command = btnInfoClicked, text = 'Information', width = 20, height = 'fill')
lblInstructions.text_color = 'white'

# create a box to house the grids
gameBox = Box(app)
space = Box(gameBox, width = "fill", height = 60, align='top')
lblInstruct = Text(space, text = 'Find the matching image!',height = 3)

# create a box to house the pictures
picturesBox = Box(gameBox, layout="grid",align='left')

# create a box to house the buttons
buttonsBox = Box(gameBox, layout="grid",align='left')

#create a box for feedback
resultBox = Box(app, width = "fill", height = 50,align = 'top')
resultBox.bg = 'light blue'
lblResult = Text(resultBox,text = '', height = 'fill', color = 'red', size = 12, align = 'left')
txtTimeLeft = TextBox(resultBox, text = '', align = 'right', height = 'fill')
lblTime = Text(resultBox, text='Time:',align = 'right', height = 'fill')
txtTimeLeft.text_size = 12

# create a box for score
scoreBox = Box(app, width = 'fill', height = 50, align='bottom')
lblScore = Text(scoreBox, text = '', width = 'fill', height = 'fill', color = 'blue')
lblScore.bg = 'light yellow'
lblScore.value = f"Score: {score}"

# create PushButtons with a different grid coordinate and add to the list
for x in range(0,GRID_SIZE):
    for y in range(0,GRID_SIZE):
        # put the pictures and buttons into the lists
        button = PushButton(picturesBox, grid=[x,y])
        pictures.append(button)

        button = PushButton(buttonsBox, grid=[x,y])
        buttons.append(button)

# call round setup
setupRound()
txtTimeLeft.value = TimeLeft
txtTimeLeft.repeat(1000,decreaseTime)

# Display app
app.display()