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Content import buttons import display import leds import color import utime import urandom BLACK = (0, 0, 0) WHITE = (255, 255, 255) GREEN = (0, 255, 0) RED = (255, 0, 0) UP = 0 RIGHT = 1 DOWN = 2 LEFT = 3 class Game: def __init__(self): self.disp = display.open() self.just_pressed = False self.head = (10, 30) self.body = [self.head] self.direction = RIGHT self.length = 5 self.fruit = self.random_position() self.score = 0 self.loop() def loop(self): running = True while running: self.handle_buttons() running = self.tick() self.render() utime.sleep(0.1) self.game_over() def render(self): self.disp.clear() self.disp.pixel(*self.head, col=RED) for pos in self.body: self.disp.pixel(*pos, col=WHITE) f_x, f_y = self.fruit self.disp.pixel(f_x, f_y, col=GREEN) self.disp.pixel(f_x - 1, f_y - 1, col=GREEN) self.disp.pixel(f_x - 1, f_y + 1, col=GREEN) self.disp.pixel(f_x + 1, f_y - 1, col=GREEN) self.disp.pixel(f_x + 1, f_y + 1, col=GREEN) self.disp.update() def tick(self): self.body = self.body[(self.length * -1):] x, y = self.head if self.direction == UP: y -= 1 if self.direction == RIGHT: x += 1 if self.direction == DOWN: y += 1 if self.direction == LEFT: x -= 1 self.head = (self.wrap_around(x, 160), self.wrap_around(y, 80)) if self.head in self.body: return False if self.head == self.fruit: self.eat_fruit() self.body.append(self.head) return True def handle_buttons(self): pressed = buttons.read(buttons.BOTTOM_LEFT | buttons.BOTTOM_RIGHT) if pressed == 0: self.just_pressed = False return # Work around the fact that some button presses # are long enough to be registered twice. if self.just_pressed: return self.just_pressed = True if pressed & buttons.BOTTOM_LEFT != 0: if self.direction == UP: self.direction = LEFT else: self.direction -= 1 elif pressed & buttons.BOTTOM_RIGHT != 0: if self.direction == LEFT: self.direction = UP else: self.direction += 1 def eat_fruit(self): self.score += 1 self.length += (3 * self.score) self.fruit = self.random_position() def game_over(self): self.disp.clear() self.disp.print("Game Over!\n score: %d" % self.score, fg=RED) self.disp.update() def wrap_around(self, value, max_value): if value < 0: return max_value elif value > max_value: return 0 else: return value def random_position(self): return (urandom.randint(1, 160 - 1), urandom.randint(1, 80 - 1)) game = Game()