# Logika hry Had – Řešení [10]

```import random
from pathlib import Path

import pyglet

TILE_SIZE = 64

class State:
def __init__(self):
self.snake = [(0, 0), (1, 0)]
self.snake_direction = 0, 1
self.width = 10
self.height = 10
self.food = []
self.alive = True

def move(self):
if not self.alive:
return

old_x, old_y = self.snake[-1]
dir_x, dir_y = self.snake_direction
new_x = old_x + dir_x
new_y = old_y + dir_y

# Kontrola vylezení z hrací plochy
if new_x < 0:
self.alive = False
if new_y < 0:
self.alive = False
if new_x >= self.width:
self.alive = False
if new_y >= self.height:
self.alive = False

self.alive = False

else:
del self.snake[0]

for try_number in range(100):
x = random.randrange(self.width)
y = random.randrange(self.height)
position = x, y
if (position not in self.snake) and (position not in self.food):
self.food.append(position)
return

snake_tiles = {}
for start in ['bottom', 'end', 'left', 'right', 'top']:
for end in ['bottom', 'end', 'left', 'right', 'top', 'dead', 'tongue']:
key = start + '-' + end
image = pyglet.image.load('snake-tiles/' + key + '.png')
snake_tiles[key] = image

window = pyglet.window.Window()

state = State()
state.width = window.width // TILE_SIZE
state.height = window.height // TILE_SIZE

@window.event
def on_draw():
window.clear()
pyglet.gl.glEnable(pyglet.gl.GL_BLEND)
pyglet.gl.glBlendFunc(pyglet.gl.GL_SRC_ALPHA, pyglet.gl.GL_ONE_MINUS_SRC_ALPHA)
for x, y in state.snake:
after = 'end'      #  složitější vybírání políčka)
if after == 'end' and not state.alive:
snake_tiles[before + '-' + after].blit(
x * TILE_SIZE, y * TILE_SIZE, width=TILE_SIZE, height=TILE_SIZE)
for x, y in state.food:
red_image.blit(
x * TILE_SIZE, y * TILE_SIZE, width=TILE_SIZE, height=TILE_SIZE)

@window.event
def on_key_press(key_code, modifier):
if key_code == pyglet.window.key.LEFT:
state.snake_direction = -1, 0
if key_code == pyglet.window.key.RIGHT:
state.snake_direction = 1, 0
if key_code == pyglet.window.key.DOWN:
state.snake_direction = 0, -1
if key_code == pyglet.window.key.UP:
state.snake_direction = 0, 1

def move(dt):
state.move()

pyglet.clock.schedule_interval(move, 1/6)

pyglet.app.run()
```

Toto je stránka lekce z kurzu, který probíhá nebo proběhl naživo s instruktorem.