Content import tidal import random from app import App import vga2_8x8 as default_font UP = 1 DOWN = 2 LEFT = 3 RIGHT = 4 class Snake(App): def on_start(self): super().on_start() def on_activate(self): super().on_activate() self.buttons.on_press(tidal.JOY_UP, lambda: self.set_direction(UP)) self.buttons.on_press(tidal.JOY_DOWN, lambda: self.set_direction(DOWN)) self.buttons.on_press(tidal.JOY_LEFT, lambda: self.set_direction(LEFT)) self.buttons.on_press(tidal.JOY_RIGHT, lambda: self.set_direction(RIGHT)) self.game_restart() def set_direction(self, dir): # this joystick makes it annoyingly easy to kill yourself by doing a 180 # by accident, so only allow the direction to change by 90 degrees at a time if self.direction == UP or self.direction == DOWN: if dir == LEFT or dir == RIGHT: self.direction = dir elif self.direction == LEFT or self.direction == RIGHT: if dir == UP or dir == DOWN: self.direction = dir def update(self): new_x = self.body[0][0] new_y = self.body[0][1] if self.direction == UP: new_y -= 8 elif self.direction == DOWN: new_y += 8 elif self.direction == LEFT: new_x -= 8 elif self.direction == RIGHT: new_x += 8 new_y %= 240 new_x %= 128 # smaller than the 135 window but needs to be divisible by 8 if (new_x, new_y) in self.body or (new_x, new_y) in self.walls: self.die() else: if (new_x, new_y) == self.target: self.score += 1 self.new_food() self.body = [(new_x, new_y)] + self.body else: tidal.display.fill_rect(self.body[-1][0], self.body[-1][1], 8, 8, tidal.BLACK) self.body = [(new_x, new_y)] + self.body[:-1] tidal.display.fill_rect(new_x, new_y, 8, 8, tidal.YELLOW) def on_deactivate(self): super().on_deactivate() self.timer_task.cancel() def update_score(self): tidal.display.fill_rect(0,232,135,16, tidal.BLACK) tidal.display.text(default_font, " {:>5} {}".format(self.score, self.lives), 0, 232) def die(self): self.lives -= 1 if self.lives == 0: # print the game over screen tidal.display.fill(tidal.BLACK) tidal.display.text(default_font, "GAME", (135-32)//2, 92) tidal.display.text(default_font, "OVER", (135-32)//2, 100) tidal.display.text(default_font, f"Score: {self.score}", 25, 120) tidal.display.text(default_font, "Press Joystick", 10, 170) tidal.display.text(default_font, "to play again", 14, 178) self.timer_task.cancel() self.buttons.on_press(tidal.JOY_CENTRE, self.game_restart) else: self.level_restart() def new_food(self): while True: new_x = random.randrange(0,128,8) new_y = random.randrange(0,224,8) if (not (new_x, new_y) in self.walls) and (not (new_x, new_y) in self.body): break self.target = (new_x, new_y) tidal.display.fill_rect(new_x, new_y, 8, 8, tidal.GREEN) tidal.display.fill_rect(0, 0, 8, 8, tidal.RED) # this doesn't do anything for some reason but if you remove it the line above doesn't do anything self.update_score() def game_restart(self): self.buttons.on_press(tidal.JOY_CENTRE, None) self.score = 0 self.lives = 3 self.level_restart() self.timer_task = self.periodic(100, self.update) def level_restart(self): self.direction = UP self.body = [(72,120), (72,128)] tidal.display.fill(tidal.BLACK) for b in self.body: tidal.display.fill_rect(b[0], b[1], 8, 8, tidal.YELLOW) self.walls = [] for x in range(0,128,8): self.walls.append((x,0)) self.walls.append((x,216)) for y in range(0,224,8): self.walls.append((0,y)) self.walls.append((120,y)) for w in self.walls: tidal.display.fill_rect(w[0], w[1], 8, 8, tidal.RED) self.new_food() tidal.display.text(default_font, " Score Lives", 0, 224) tidal.display.text(default_font, " {:>5} {}".format(self.score, self.lives), 0, 232) main = Snake