import pygame
import time
import random

pygame.init()

white=(255,255,255)
yellow=(255,255,102)
black=(0,0,0)
red=(213,50,80)
blue=(50,153,213)
green=(0,255,0)

dis_width=600
dis_height=400

dis=pygame.display.set_mode((dis_width,dis_height))
pygame.display.set_caption('Snake Game By Eshan')

clock = pygame.time.Clock()

snake_block=10
snake_speed=15

font_style=pygame.font.SysFont("bahnschrift", 25)
score_font=pygame.font.SysFont("comicsansms", 35)

def the_score(score) :
    value = score_font.render("Your Score is: "+ str(score), True, yellow)
    dis.blit(value,[0,0])

def our_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])

def message(msg,color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width/6, dis_height/3])

def gameLoop():
    game_over=False
    game_close=False

    x1 = dis_width/2
    y1 = dis_height/2

    x1_change = 0
    y1_change = 0

    snake_List = []
    Lenght_of_snake = 1

    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0

    while not game_over:
        while game_close == True:
            dis.fill(blue)
            message("You Lost! Pres Q-Quit or C-Play Again",red)

            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over=True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change=-snake_block
                    y1_change=0
                elif event.key == pygame.K_RIGHT:
                    x1_change=snake_block
                    y1_change=0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close=True

        x1 += x1_change
        y1 += y1_change
        dis.fill(blue)
        pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Lenght_of_snake:
            del snake_List[0]
        
        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close= True

        our_snake(snake_block, snake_List)
        the_score(Lenght_of_snake-1)

        pygame.display.update()
        # pygame.draw.rect(dis, black, [x1,y1,snake_block,snake_block])

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
            Lenght_of_snake += 1

        clock.tick(snake_speed)

    pygame.quit()
    quit()

gameLoop()