Snake-game/main.py at master · Eritrix/Snake-game · GitHub

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import pygame
import random
pygame.init()

#creating game window
gameWindow =pygame.display.set_mode((900,600))
pygame.display.set_caption("Snakes!!")


clock=pygame.time.Clock()
font=pygame.font.Font(None,55)

# functions

def screen_text (text,colour,size,x,y):
   font=pygame.font.Font(None,size)
   screen_text=font.render(text,True,colour)
   gameWindow.blit(screen_text,(x,y))


def plot_snake (gameWindow,colour,snake_list,snake_size):
  for x,y in snake_list:
      pygame.draw.rect(gameWindow,colour,[x,y,snake_size,snake_size])


#main game loop
def game_loop():

 #game variables
 white=(255,255,255)
 green=(0,255,0)
 red=(255,0,0)
 black=(0,0,0)

 exit_game=False
 game_over=False

 snake_x,snake_y=450,300
 snake_size=30
 vel_x,vel_y=0,0
 food_x,food_y=random.randint(20,850),random.randint(20,550)

 snake_list=[]
 snake_length=1

 score=0
 fps=35

 while not exit_game:

    for event in pygame.event.get():
        if event.type==pygame.QUIT:
          exit_game=True
        if event.type==pygame.KEYDOWN:
         if not game_over:

           if event.key==pygame.K_d:
             vel_x=2
             vel_y=0

           if event.key==pygame.K_a:
             vel_x=-2
             vel_y=0

           if event.key==pygame.K_w:
             vel_y=-2
             vel_x=0

           if event.key==pygame.K_s:
             vel_y=2
             vel_x=0
         else:
           if event.key==pygame.K_RETURN:
             exit_game=True
             return exit_game

    if game_over==True:
       gameWindow.fill(white)
       screen_text("Game Over!!",red,100,270,260)
       screen_text("Press 'enter' to restart",black,40,300,320)
       pygame.display.update()
       clock.tick(fps)
       continue

    if abs(snake_x-food_x)<25 and abs(snake_y-food_y)<25:
       score +=10
       food_x=random.randint(20,850)
       food_y=random.randint(20,550)
       snake_length+=5

    fps=min(35+(score//20)*5,60)

    if snake_x==0 or snake_x==900 or snake_y==0 or snake_y==600:
      score -=20


    snake_x = vel_x + snake_x
    snake_y+=vel_y


    if snake_x<0:
       snake_x=899
    elif snake_x>900:
       snake_x=1
    if snake_y<0:
       snake_y=599
    elif snake_y>600:
       snake_y=1


    gameWindow.fill(white)


   #snake tail growth
    head=[snake_x,snake_y]
    snake_list.append(head)
    if len(snake_list)>snake_length:
       del snake_list[0]
    plot_snake(gameWindow,green,snake_list,snake_size)
    pygame.draw.rect(gameWindow,red,[food_x,food_y,snake_size,snake_size])

    if head in snake_list[:-1]:
       game_over=True


    if not game_over:
     screen_text(("Score:"+str(score)),black,55,30,20)


    pygame.display.update()
    clock.tick(fps)

running=True
while running:
 running=game_loop()

pygame.quit()
quit()