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game_functions.py
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game_functions.py
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import sys
import pygame
from food import Food
from snake import Snake
from random import randint
import os
cwd =os.getcwd()
def check_events(body,stats,play_button,screen):
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
if event.type==pygame.KEYDOWN:
if event.key==pygame.K_SPACE:
stats.game_active=True
reset(body,screen)
if event.key==pygame.K_q:
sys.exit()
if event.key==pygame.K_d:
if body[0].direction==1:
continue
else:
body[0].direction=0
elif event.key==pygame.K_a:
if body[0].direction==0:
continue
else:
body[0].direction=1
elif event.key==pygame.K_w:
if body[0].direction==3:
continue
else:
body[0].direction=2
elif event.key==pygame.K_s:
if body[0].direction==2:
continue
else:
body[0].direction=3
elif event.type==pygame.MOUSEBUTTONDOWN:
mouse_x,mouse_y=pygame.mouse.get_pos()
check_play(stats,play_button,mouse_x,mouse_y,screen,body)
def check_play(stats,play_button,mouse_x,mouse_y,screen,body):
if play_button.rect.collidepoint(mouse_x, mouse_y):
stats.game_active = True
reset(body,screen)
def grow(body,screen):
block=Snake(screen)
block.rect.x,block.rect.y=-10,-10
body.append(block)
def check_fail(stats,body,ssettings,screen,foods):
for i in range(5,len(body)):
if body[0].rect.collidepoint(body[i].rect.center):
stats.game_active=False
def reset(body,screen):
del body[1:]
body=[]
body.append(Snake(screen))
body[0]=Snake(screen)
body[0].x=randint(0,1000)
body[0].x=randint(0,800)
def update_screen(body,stats,ssettings,screen,foods):
body[0].update(ssettings)
if len(foods)<1:
create_food(foods,ssettings)
foods.draw(screen)
check_fail(stats,body,ssettings,screen,foods)
if stats.game_active==True:
change_direction(body,stats,ssettings)
else:
reset(body,screen)
if pygame.sprite.pygame.sprite.pygame.sprite.spritecollideany(body[0], foods):
eat_food(foods)
grow(body,screen)
grow(body,screen)
body[0].blitme()
for i in range(0,len(body)-1):
body[i].blitme()
pygame.display.flip()
def create_food(foods,ssettings):
food=Food(ssettings)
foods.add(food)
def eat_food(foods):
foods.empty()
def make_border(screen):
image=pygame.image.load(os.path.join(cwd,"images/border.png"))
rect=image.get_rect()
rect.center=screen.get_rect().center
screen.blit(image,rect)
def change_direction(body,stats,ssettings):
body[0].updatecount+=1
if(body[0].updatecount>20):
for i in range(len(body)-1,0,-1):
body[i].rect.x=body[i-1].rect.x
body[i].rect.y=body[i-1].rect.y
body[0].updatecount=0
if(body[0].direction==0):
if(body[0].rect.right<ssettings.screen_width):
body[0].x+=ssettings.snake_speed
else:
stats.game_active=False
if(body[0].direction==1):
if(body[0].rect.x>0):
body[0].x-=ssettings.snake_speed
else:
stats.game_active=False
if(body[0].direction==2):
if(body[0].rect.y>0):
body[0].y-=ssettings.snake_speed
else:
stats.game_active=False
if(body[0].direction==3):
if(body[0].rect.bottom<ssettings.screen_height):
body[0].y+=ssettings.snake_speed
else:
stats.game_active=False