def game_loop(self):
# Creating game objects
snake = Snake(self.display_resolution, self.block_size)
apple = Apple(self.display_resolution, self.block_size)
snake.current_direction = Directions.RIGHT
apple.generate(snake)
self.score = 0
game_exit = False
while not game_exit:
for event in pg.event.get():
if event.type == pg.QUIT:
game_exit = True
sys.exit()
if event.type == pg.K_ESCAPE:
pg.quit()
game_exit = True
sys.exit()
if event.type == pg.KEYDOWN:
if event.key == pg.K_LEFT:
snake.move_left()
if event.key == pg.K_RIGHT:
snake.move_right()
if event.key == pg.K_UP:
snake.move_up()
if event.key == pg.K_DOWN:
snake.move_down()
snake.update(self)
if snake.head.x == apple.coords.x and snake.head.y == apple.coords.y:
snake.tail_extend()
self.score += 1
apple.generate(snake)
# Filling background with color (default white)
self.screen.fill(self.white)
self.show_score(self.screen, self.score)
self.screen.fill(self.background_color,
(20, 20, self.display_resolution[0],
self.display_resolution[1]))
# Drawing snakes head
pg.draw.rect(
self.screen, self.snake_color,
(snake.head.x, snake.head.y, self.block_size, self.block_size))
# Drawing snakes tail
for elem in snake.tail_coords:
pg.draw.rect(
self.screen, self.snake_color,
(elem.x, elem.y, self.block_size, self.block_size))
# Drawing walls
# Upper wall
pg.draw.rect(self.screen, self.walls_color,
(0, 20, self.display_resolution[0], 20))
# Left wall
pg.draw.rect(self.screen, self.walls_color,
(0, 20, 20, self.display_resolution[1]))
# Bottom wall
pg.draw.rect(self.screen, self.walls_color,
(0, self.display_resolution[1] - 20,
self.display_resolution[0], 20))
# Right wall
pg.draw.rect(self.screen, self.walls_color,
(self.display_resolution[0] - 20, 20, 20,
self.display_resolution[1]))
# Drawing apple
pg.draw.rect(self.screen, self.apple_color,
(apple.coords.x, apple.coords.y, self.block_size,
self.block_size))
pg.display.update()
self.clock.tick(self.fps)
