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#!/usr/bin/env python

# coding: utf-8

# In[ ]:

import pygame,sys

import time

import random

pygame.init()

white = (255,255,255)

black = (100,0,0)

red = (255,0,0)

window_width = 800

window_height = 600

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

pygame.display.set_caption('slither')

clock = pygame.time.Clock()

FPS = 5

blockSize = 20

noPixel = 0

'''

sizeGrd = window_width // blockSize

row = 0

col = 0

for nextline in range(sizeGrd):

'''

def myquit():

''' Self explanatory '''

pygame.quit()

sys.exit(0)

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

def drawGrid():

sizeGrd = window_width // blockSize

def snake(blockSize, snakelist):

#x = 250 - (segment_width + segment_margin) * i

for size in snakelist:

pygame.draw.rect(gameDisplay, black,[size[0]+5,size[1],blockSize,blockSize],2)

def message_to_screen(msg, color):

screen_text = font.render(msg, True, color)

gameDisplay.blit(screen_text, [window_width/2, window_height/2])

def gameLoop():

gameExit = False

gameOver = False

lead_x = window_width/2

lead_y = window_height/2

change_pixels_of_x = 0

change_pixels_of_y = 0

snakelist = []

snakeLength = 1

randomAppleX = round(random.randrange(0, window_width-blockSize)/10.0)*10.0

randomAppleY = round(random.randrange(0, window_height-blockSize)/10.0)*10.0

while not gameExit:

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()

for event in pygame.event.get():

if event.type == pygame.QUIT:

gameExit = True

if event.type == pygame.KEYDOWN:

if event.key == pygame.K_ESCAPE:

myquit()

leftArrow = event.key == pygame.K_LEFT

rightArrow = event.key == pygame.K_RIGHT

upArrow = event.key == pygame.K_UP

downArrow = event.key == pygame.K_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

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)

AppleThickness = 20

print([int(randomAppleX),int(randomAppleY),AppleThickness,AppleThickness])

pygame.draw.rect(gameDisplay, red, [randomAppleX,randomAppleY,AppleThickness,AppleThickness])

allspriteslist = []

allspriteslist.append(lead_x)

allspriteslist.append(lead_y)

snakelist.append(allspriteslist)

if len(snakelist) > snakeLength:

del snakelist[0]

for eachSegment in snakelist [:-1]:

if eachSegment == allspriteslist:

gameOver = True

snake(blockSize, snakelist)

pygame.display.update()

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

clock.tick(FPS)

pygame.quit()

quit()

gameLoop()