Drawing the snake – Řešení [3]

import pyglet

TILE_SIZE = 64

class GameState:
    def initialize(self):
        self.snake = [(1, 2), (2, 2), (3, 2), (3, 3), (3, 4), (3, 5), (4, 5)]
        self.food = [(2, 0), (5, 1), (1, 4)]

    def draw(self):
        for x, y in self.snake:
            snake_tiles['end-end'].blit(x * TILE_SIZE, y * TILE_SIZE,
                                        width=TILE_SIZE, height=TILE_SIZE)
        for x, y in self.food:
            apple_image.blit(x * TILE_SIZE, y * TILE_SIZE,
                             width=TILE_SIZE, height=TILE_SIZE)

state = GameState()
state.initialize()

apple_image = pyglet.image.load('apple.png')
green_image = pyglet.image.load('green.png')
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()

@window.event
def on_draw():
    window.clear()
    # Lepší vykreslování (pro nás zatím kouzelné zaříkadlo)
    pyglet.gl.glEnable(pyglet.gl.GL_BLEND)
    pyglet.gl.glBlendFunc(pyglet.gl.GL_SRC_ALPHA, pyglet.gl.GL_ONE_MINUS_SRC_ALPHA)

    state.draw()

pyglet.app.run()