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snake.py
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import pygame as pg
import sys
import time
import random
class Snake:
def __init__(self, snake_length=20) -> None:
self.snake_length = snake_length
self.snake_arr = []
self.snake_head = pg.Rect((0, 0), (0, 0))
self.snake_pos_x = 100
self.snake_pos_y = 100
def get_snake_length(self):
return self.snake_length
def increase_snake_length(self):
self.snake_length += 10
def get_snake_arr(self):
return self.snake_arr
def get_snake_head(self):
return self.snake_head
def set_snake_head(self, snake_head):
self.snake_head = snake_head
def update_snake_arr(self):
position = [self.snake_pos_x, self.snake_pos_y]
self.snake_arr.append(position)
def pop_snake_arr(self):
self.snake_arr.pop(0)
class Fruit:
def __init__(self) -> None:
self.fruit_pos_x = random.randint(150, 400)
self.fruit_pos_y = random.randint(150, 400)
self.fruit = pg.Rect((self.fruit_pos_x, self.fruit_pos_y), (20, 20))
def generate_new_position(self):
self.fruit_pos_x = random.randint(150, 400)
self.fruit_pos_y = random.randint(150, 400)
def make_new_fruit(self):
self.generate_new_position()
self.fruit = pg.Rect((self.fruit_pos_x, self.fruit_pos_y), (20, 20))
def get_fruit(self):
return self.fruit
class MainWindow:
def __init__(self) -> None:
self.window = pg.display.set_mode(
size=(640, 520), flags=0, depth=0, display=0, vsync=0)
self.score_surface = pg.Surface(size=(640, 45))
self.game_area_surface = pg.Surface(size=(640, 520))
self.border = pg.draw.rect(
self.game_area_surface, (202, 201, 245), pg.Rect(25, 25, 600, 425), 5)
def init_main_window(self):
pg.display.set_caption("Snake")
pg.init()
pg.display.init()
def draw_display_score_bar(self, score=0):
self.score_surface.fill((63, 150, 102))
self.window.blit(self.score_surface, (0, 0))
font = pg.font.SysFont(None, 40)
img = font.render('SCORE: {0}'.format(score), True, (144, 210, 245))
self.window.blit(img, (240, 10))
def draw_game_area(self):
self.game_area_surface.fill((202, 201, 245))
self.window.blit(self.game_area_surface, (0, 40))
def game_over(self):
font = pg.font.SysFont(None, 50)
img = font.render('GAME OVER', True, (144, 210, 245))
self.game_area_surface.fill((0, 0, 0))
self.window.blit(self.game_area_surface, (0, 0))
self.window.blit(img, (200, 240))
def draw_snake(self, snake):
snake_size = (25, 25)
snake_arr = snake.get_snake_arr()
for i, e in enumerate(snake_arr):
if i == len(snake_arr)-1:
snake_head = pg.draw.rect(
self.game_area_surface, (80, 145, 250), pg.Rect((e[0], e[1]), snake_size))
snake.set_snake_head(snake_head)
else:
if i % 4 == 0:
pg.draw.rect(self.game_area_surface, (42, 122,
250), pg.Rect((e[0], e[1]), snake_size))
else:
pg.draw.rect(self.game_area_surface, (83, 93,
110), pg.Rect((e[0], e[1]), snake_size))
if len(snake_arr) > snake.get_snake_length():
snake.pop_snake_arr()
self.window.blit(self.game_area_surface, (0, 40))
def draw_fruit(self, fruit):
pg.draw.rect(self.game_area_surface, (130, 13, 29), fruit.get_fruit())
self.window.blit(self.game_area_surface, (0, 40))
def get_border(self):
return self.border
class GameLoop:
def __init__(self) -> None:
self.score = 0
self.k_up = False
self.k_down = False
self.k_right = True
self.k_left = False
self.music = 'sound/Snake-Song-2-E.mp3'
self.capture_effect = 'sound/Snake-Capture-Fruit.mp3'
self.game_over_music = 'sound/Game-Over.mp3'
self.snake = Snake()
self.fruit = Fruit()
self.main_window = MainWindow()
def update_display(self):
pg.display.update()
def increase_score(self):
self.score += 1
def get_score(self):
return self.score
def background_music(self):
pg.mixer.music.load(self.music)
pg.mixer.music.set_volume(0.6)
pg.mixer.music.play(-1)
def capture_sound(self):
capture_sound = pg.mixer.Sound(self.capture_effect)
pg.mixer.Sound.play(capture_sound)
def game_over(self):
self.main_window.game_over()
pg.display.update()
pg.mixer.music.stop()
time.sleep(0.5)
pg.mixer.music.load(self.game_over_music)
pg.mixer.music.play(1)
time.sleep(6)
sys.exit(1)
def position_update(self, snake):
if self.k_up == True:
snake.snake_pos_y -= 3
elif self.k_down == True:
snake.snake_pos_y += 3
elif self.k_right == True:
snake.snake_pos_x += 3
elif self.k_left == True:
snake.snake_pos_x -= 3
snake.update_snake_arr()
def check_for_border_hit(self, snake, main_window):
snake_head = snake.get_snake_head()
border = main_window.get_border()
if snake_head.colliderect(border) == False:
self.game_over()
def check_for_self_hit(self, snake):
snake_head = snake.get_snake_head()
snake_arr = snake.get_snake_arr()
for e in snake_arr[:len(snake_arr)-15]:
if e[0] == snake_head.center[0] and e[1] == snake_head.center[1]:
self.game_over()
def check_fruit_capture(self, snake, fruit):
snake_head = snake.get_snake_head()
if snake_head.colliderect(fruit.get_fruit()) == True:
self.capture_sound()
self.increase_score()
fruit.make_new_fruit()
snake.increase_snake_length()
def event_loop(self):
for event in pg.event.get():
if event.type == pg.KEYDOWN:
if self.k_down != True and event.key == pg.K_UP:
self.k_up = True
self.k_down = False
self.k_right = False
self.k_left = False
elif self.k_up != True and event.key == pg.K_DOWN:
self.k_up = False
self.k_down = True
self.k_right = False
self.k_left = False
elif self.k_left != True and event.key == pg.K_RIGHT:
self.k_up = False
self.k_down = False
self.k_right = True
self.k_left = False
elif self.k_right != True and event.key == pg.K_LEFT:
self.k_up = False
self.k_down = False
self.k_right = False
self.k_left = True
if event.type == pg.QUIT:
sys.exit(1)
def init_window(self):
self.main_window.init_main_window()
self.main_window.draw_game_area()
self.main_window.draw_display_score_bar()
def main(self):
self.init_window()
self.background_music()
if pg.display.get_init() == True:
while True:
time.sleep(0.01)
self.position_update(self.snake)
self.main_window.draw_game_area()
self.main_window.draw_display_score_bar(self.get_score())
self.main_window.draw_snake(self.snake)
self.main_window.draw_fruit(self.fruit)
self.event_loop()
self.check_for_border_hit(self.snake, self.main_window)
self.check_for_self_hit(self.snake)
self.check_fruit_capture(self.snake, self.fruit)
self.update_display()
if __name__ == "__main__":
game = GameLoop()
game.main()