class PySnake(MyGame):
"贪吃蛇游戏"
def __init__(self):
super(PySnake, self).__init__(GAME_NAME, SCREEN_SIZE, FPS,
"resources/Minecraft.ttf", 16,
"resources/pysnake.png")
self.background.fill(BACKGROUND_COLOR)
for i in range(CELL_SIZE, SCREEN_WIDTH, CELL_SIZE):
pygame.draw.line(self.background, GRID_COLOR, (i, 0),
(i, SCREEN_HEIGHT))
for i in range(CELL_SIZE, SCREEN_HEIGHT, CELL_SIZE):
pygame.draw.line(self.background, GRID_COLOR, (0, i),
(SCREEN_WIDTH, i))
self.field = Field(self, COLUMNS, ROWS)
self.apple_counter = 0
self.apple = Apple(self)
# self.snake = Snake(self)
self.snake = Snake(self, SNAKE_DEFAULT_X, SNAKE_DEFAULT_Y,
SNAKE_DEFAULT_LENGTH, RIGHT, SNAKE_DEFAULT_SPEED,
SNAKE_COLOR_SKIN, SNAKE_COLOR_BODY,
SNAKE_COLOR_HEAD)
# 控制按键设定
self.key_bind(KEY_EXIT, self.quit)
self.key_bind(KEY_UP, self.snake.turn, direction=UP)
self.key_bind(KEY_DOWN, self.snake.turn, direction=DOWN)
self.key_bind(KEY_LEFT, self.snake.turn, direction=LEFT)
self.key_bind(KEY_RIGHT, self.snake.turn, direction=RIGHT)
self.key_bind(pygame.K_EQUALS, self.snake.speed_up)
self.key_bind(pygame.K_MINUS, self.snake.speed_down)
self.key_bind(KEY_RESPAWN, self.restart)
self.add_draw_action(self.show_score)
def restart(self):
if not self.snake.alive:
self.apple_counter = 0
self.field.clear() # 移除尸体
self.apple.drop()
self.snake.respawn()
def show_score(self):
text = "Apple {}".format(self.apple_counter)
output = self.font.render(text, True, (255, 255, 33))
self.screen.blit(output, (0, 0))
if not self.snake.alive:
text = " GAME OVER"
output = self.font.render(text, True, (255, 33, 33), WHITE)
self.screen.blit(output, (320 - 54, 240 - 10))
text = " press R to restart"
output = self.font.render(text, True, GREY, DARK_GREY)
self.screen.blit(output, (320 - 94, 260 - 10))
if not self.running and self.snake.alive:
text = " GAME PAUSED"
output = self.font.render(text, True, LIGTH_GREY, DARK_GREY)
self.screen.blit(output, (320 - 54, 240 - 10))
class PySnake(MyGame):
"""贪吃蛇游戏"""
def __init__(self):
super(PySnake, self).__init__(GAME_NAME, ICON,
SCREEN_WIDTH, SCREEN_HEIGHT,
DISPLAY_MODE, LOOP_SPEED,
FONT_NAME, FONT_SIZE)
self.draw_background_line()
self.snake = Snake(self)
self.apple = Apple(self)
self.apple_count = 0
# 绑定按键
self.add_key_binding(KEY_UP, self.snake.turn, direction=UP)
self.add_key_binding(KEY_DOWN, self.snake.turn, direction=DOWN)
self.add_key_binding(KEY_LEFT, self.snake.turn, direction=LEFT)
self.add_key_binding(KEY_RIGHT, self.snake.turn, direction=RIGHT)
self.add_key_binding(KEY_REBORN, self.restart)
self.add_key_binding(KEY_EXIT, self.game_quit)
self.add_draw_action(self.show_score)
def draw_background_line(self):
self.background.fill(COLOR_BG)
for col in range(CELL_SIZE, SCREEN_WIDTH, CELL_SIZE):
self.draw.line(self.background, COLOR_GRID,
(col, 0), (col, SCREEN_HEIGHT))
for row in range(CELL_SIZE, SCREEN_HEIGHT, CELL_SIZE):
self.draw.line(self.background, COLOR_GRID,
(0, row), (SCREEN_WIDTH, row))
def show_score(self):
text = "Apple %d" % self.apple_count
self.draw_text(text, (0, 0), COLOR_SCORE)
if not self.snake.alive:
self.draw_text(" GAME OVER ",
(SCREEN_WIDTH // 2 - 65, SCREEN_HEIGHT // 2 - 40),
COLOR_DEFEAT, WHITE)
self.draw_text(" PRESS R TO RESTART ",
(SCREEN_WIDTH // 2 - 120, SCREEN_HEIGHT // 2),
GREY, LIGHT_GREY)
if not self.running and self.snake.alive:
self.draw_text(" GAME PAUSED ",
(SCREEN_WIDTH // 2 - 80, SCREEN_HEIGHT // 2 - 20),
LIGHT_GREY, DARK_GREY)
def restart(self):
if not self.snake.alive:
self.apple_count = 0
self.apple.drop()
self.snake.reborn()
self.running = True
