Code for 006 & final code

#Modified by Y@shu

import pygame
import time
import random

# Initializing pygame
pygame.init()

# colors
white = (255,255,255)
black = (0,0,0)
red = (255,0,0)

# window surface sizes
window_width = 800
window_height = 600

gameDisplay = pygame.display.set_mode((window_width,window_height))

# window name
pygame.display.set_caption('Sanke Game by Y@shu')

clock = pygame.time.Clock() # set for to create an object to help track time
FPS = 30
blockSize = 10
noPixel = 0

# text font
font = pygame.font.SysFont(None, 25, bold=True)

# function to each block of draw snake
def snake(blockSize, snakelist):
    for size in snakelist:
        pygame.draw.rect(gameDisplay, black,[size[0],size[1],blockSize,blockSize])

def message_to_screen(msg, color):
    screen_text = font.render(msg, True, color)
    # position of text on surface
    gameDisplay.blit(screen_text, [window_width/2, window_height/2])

# game loop/event loop
def gameLoop():
    # game status
    gameExit = False
    gameOver = False

    lead_x = window_width/2
    lead_y = window_height/2

    change_pixels_of_x = 0
    change_pixels_of_y = 0
    # Initialize snake dimensions
    snakelist = []
    snakeLength = 1

# food position
# round for round off values for integer
    randomAppleX = round(random.randrange(0, window_width-blockSize)/10.0)*10.0 # generating random apple
    randomAppleY = round(random.randrange(0, window_height-blockSize)/10.0)*10.0 # generating random apple

    while not gameExit:
# Execution of below while loop when game will over
        while gameOver == True:
            gameDisplay.fill(white)
            message_to_screen("Game over, press c to play again or Q to quit", red)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    gameOver = False
                    gameExit = True

                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        gameExit = True
                        gameOver = False
                    if event.key == pygame.K_c:
                        gameLoop()
# Logic 1 is for the keypress
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                gameExit = True

            if event.type == pygame.KEYDOWN:

                leftArrow = event.key == pygame.K_LEFT
                rightArrow = event.key == pygame.K_RIGHT
                upArrow = event.key == pygame.K_UP
                downArrow = event.key == pygame.K_DOWN

# Androids

# leftArrow = event.key == pygame.K_4

# rightArrow = event.key ==pygame.K_6

# upArrow = event.key == pygame.K_2

# downArrow = event.key == pygame.K_8

#Reduce and exceed from opposite ends as per instructions as left ,right, up , down
                if leftArrow:
                    change_pixels_of_x = -blockSize
                    change_pixels_of_y = noPixel
                elif rightArrow:
                    change_pixels_of_x = blockSize
                    change_pixels_of_y = noPixel
                elif upArrow:
                    change_pixels_of_y = -blockSize
                    change_pixels_of_x = noPixel
                elif downArrow:
                    change_pixels_of_y = blockSize
                    change_pixels_of_x = noPixel

# Logic 2 to maintain the boundary
            if lead_x >= window_width or lead_x < 0 or lead_y >= window_height or lead_y < 0:
                gameOver = True

        lead_x += change_pixels_of_x
        lead_y += change_pixels_of_y

        gameDisplay.fill(white)

# About food position and size in terminal in back-end

# Logic 3 is to generate the random apple and draw the apple
        AppleThickness = 10
        pygame.draw.rect(gameDisplay, red, [randomAppleX,randomAppleY,AppleThickness,AppleThickness])

        snakehead = []
        snakehead.append(lead_x)
        snakehead.append(lead_y)
        snakelist.append(snakehead)

        if len(snakelist) > snakeLength:
            del snakelist[0]

        for eachSegment in snakelist [:-1]:
            if eachSegment == snakehead:
                gameOver = True

# Logic 4 is to draw the snake
        snake(blockSize, snakelist)

        pygame.display.update()

# Comparision of food and snake mouth position

# Logic 5 is to eat the apple
        if lead_x >= randomAppleX and lead_x <= randomAppleX + AppleThickness:
            if lead_y >= randomAppleY and lead_y <= randomAppleY + AppleThickness:
                randomAppleX = round(random.randrange(0, window_width-blockSize)/10.0)*10.0
                randomAppleY = round(random.randrange(0, window_height-blockSize)/10.0)*10.0
                snakeLength += 1

        # Frames per second here it is 5fps
        clock.tick(FPS)

    pygame.quit()
    quit()
gameLoop()