diff --git a/apple.py b/apple.py new file mode 100644 index 0000000..a0a9473 --- /dev/null +++ b/apple.py @@ -0,0 +1,11 @@ +import random + + +class Apple(): + def __init__(self,settings): + self.x = random.randint(1, settings.cell_w - 1) + self.y = random.randint(1, settings.cell_h - 1) + + def spawn(self,settings): + self.x = random.randint(1, settings.cell_w - 1) + self.y = random.randint(1, settings.cell_h - 1) \ No newline at end of file diff --git a/game_functions.py b/game_functions.py index 52e1c99..bf74099 100644 --- a/game_functions.py +++ b/game_functions.py @@ -19,6 +19,30 @@ def check_events(settings): elif event.key == pygame.K_2: settings.game_mode = 2 + +def check_play_events(snake): + """检测游戏过程中的按键""" + for event in pygame.event.get(): + if event.type == pygame.QUIT: + pygame.quit() + sys.exit() + elif event.type == pygame.KEYDOWN: + if event.key == pygame.K_ESCAPE: + pygame.quit() + sys.exit() + elif event.key == pygame.K_LEFT and not snake.direction == 'right': #防止反向移动 + snake.direction = 'left' + break + elif event.key == pygame.K_RIGHT and not snake.direction == 'left': + snake.direction = 'right' + break + elif event.key == pygame.K_UP and not snake.direction == 'down': + snake.direction = 'up' + break + elif event.key == pygame.K_DOWN and not snake.direction == 'up': + snake.direction = 'down' + break + def show_start(settings, screen): """模式选择界面""" @@ -33,10 +57,11 @@ def show_start(settings, screen): presskey_rect = presskey_image.get_rect() presskey_rect.centerx = title_rect.centerx presskey_rect.top = title_rect.bottom + + screen.fill(settings.bg_color) # 绘制屏幕 + screen.blit(title_image, title_rect) # 绘制标题 + screen.blit(presskey_image, presskey_rect) # 绘制说明文字 while True: - screen.fill(settings.bg_color) # 绘制屏幕 - screen.blit(title_image, title_rect) # 绘制标题 - screen.blit(presskey_image, presskey_rect) # 绘制说明文字 check_events(settings) # 检测键盘 if settings.game_mode != 0: # 说明按了1或2，退出循环 break @@ -69,84 +94,75 @@ def draw_grid(settings, screen): pygame.draw.line(screen, (40, 40, 40), (0, y), (settings.width, y)) -def update_screen(settings, screen): - screen.fill(settings.bg_color) - draw_grid(settings, screen) - -# 绘制蛇 - - -def draw_snake(ai_settings, screen, snake): +def draw_snake(settings, screen, snake): # 头部用白色 - x = snake.coords[0]['x'] * ai_settings.cell_size - y = snake.coords[0]['y'] * ai_settings.cell_size + head_index = snake.coords[0] + x = head_index['x'] * settings.cell_size + y = head_index['y'] * settings.cell_size snake_head_rect = pygame.Rect( - x, y, ai_settings.cell_size, ai_settings.cell_size) + x, y, settings.cell_size, settings.cell_size) pygame.draw.rect(screen, (255, 255, 255), snake_head_rect) # 蛇身内部用浅绿，外框用深绿 - for coord in snake.coords[1: -1]: - x = coord['x'] * ai_settings.cell_size - y = coord['y'] * ai_settings.cell_size + for bodies_index in snake.coords[1: -1]: + x = bodies_index['x'] * settings.cell_size + y = bodies_index['y'] * settings.cell_size snake_part_rect = pygame.Rect( - x, y, ai_settings.cell_size, ai_settings.cell_size) + x, y, settings.cell_size, settings.cell_size) pygame.draw.rect(screen, (0, 155, 0), snake_part_rect) snake_part_inner_rect = pygame.Rect( - x + 4, y + 4, ai_settings.cell_size - 8, ai_settings.cell_size - 8) + x + 4, y + 4, settings.cell_size - 8, settings.cell_size - 8) pygame.draw.rect(screen, (0, 255, 0), snake_part_inner_rect) # 蛇尾用浅绿 - coord = snake.coords[-1] - x = coord['x'] * ai_settings.cell_size - y = coord['y'] * ai_settings.cell_size + tail_index = snake.coords[-1] + x = tail_index['x'] * settings.cell_size + y = tail_index['y'] * settings.cell_size snake_tail_rect = pygame.Rect( - x, y, ai_settings.cell_size, ai_settings.cell_size) + x, y, settings.cell_size, settings.cell_size) pygame.draw.rect(screen, (0, 255, 0), snake_tail_rect) + +def draw_apple(apple,settings,screen): + x = apple.x * settings.cell_size + y = apple.y * settings.cell_size + apple_rect = pygame.Rect( + x, y, settings.cell_size, settings.cell_size) + pygame.draw.rect(screen, (255, 0, 0), apple_rect) + + # 绘制游戏界面 - - -def update_screen(settings, screen, snake): +def update_screen(settings, screen, snake,apple): screen.fill(settings.bg_color) draw_grid(settings, screen) + draw_apple(apple,settings,screen) # 移动蛇 - del snake.coords[-1] # 加蛇头 - snake.update() # 去蛇尾 - if not is_game_over(settings, snake): + snake.move_head() # 加蛇头 + if game_over(snake,settings): settings.game_mode = -1 + elif eat_apple(snake,apple): + apple.spawn(settings) + draw_apple(apple,settings,screen) else: - draw_snake(settings, screen, snake) - pygame.display.flip() - # 暂停一下 - settings.my_clock.tick(settings.clock_frq) + del snake.coords[-1] # 去蛇尾 + draw_snake(settings, screen, snake) + pygame.display.flip() + # 暂停一下 + settings.my_clock.tick(settings.clock_frq) -def is_game_over(settings, snake): +def game_over(snake,settings): # 碰到左右墙壁 if (snake.coords[snake.head_index]['x'] == -1 or snake.coords[snake.head_index]['x'] == settings.cell_w): - return False + return True # 碰到上下墙壁 if (snake.coords[snake.head_index]['y'] == -1 or snake.coords[snake.head_index]['y'] == settings.cell_h): - return False + return True # 碰到自己 if (snake.coords[snake.head_index] in snake.coords[1:]): - return False - return True + return True + return False -# 检测游戏过程中的按键 -def check_play_events(snake): - for event in pygame.event.get(): - if event.type == pygame.QUIT: - pygame.quit() - sys.exit() - elif event.type == pygame.KEYDOWN: - if event.key == pygame.K_ESCAPE: - pygame.quit() - sys.exit() - elif event.key == pygame.K_LEFT and not snake.direction == 'right': - snake.direction = 'left' - elif event.key == pygame.K_RIGHT and not snake.direction == 'left': - snake.direction = 'right' - elif event.key == pygame.K_UP and not snake.direction == 'down': - snake.direction = 'up' - elif event.key == pygame.K_DOWN and not snake.direction == 'up': - snake.direction = 'down' +def eat_apple(snake,apple): + if (snake.coords[snake.head_index]['x'] == apple.x and snake.coords[snake.head_index]['y'] == apple.y): + return True + return False \ No newline at end of file diff --git a/main.py b/main.py index cb87385..1cc8299 100644 --- a/main.py +++ b/main.py @@ -2,6 +2,7 @@ import pygame from settings import Settings import game_functions as gf from snake import Snake +from apple import Apple settings = Settings() # 设置屏幕 @@ -10,11 +11,13 @@ screen = pygame.display.set_mode((settings.width, settings.height)) pygame.display.set_caption('贪吃蛇') # 创建蛇 snake = Snake(settings) +# 创建苹果 +apple = Apple(settings) - +#手动模式 def run_game1(): gf.check_play_events(snake) - gf.update_screen(settings, screen, snake) + gf.update_screen(settings, screen, snake,apple) def run_game(): diff --git a/settings.py b/settings.py index cd2df09..2ca95b9 100644 --- a/settings.py +++ b/settings.py @@ -16,8 +16,9 @@ class Settings: self.game_mode = 0 # 游戏状态 self.score = 0 # 游戏得分 - self.clock_frq = 5 # 刷新频率 + self.clock_frq = 3 # 刷新频率 self.my_clock = pygame.time.Clock() + if sys.platform.startswith("linux"): self.font_name = pygame.font.match_font('wenquanyizenhei') else: diff --git a/snake.py b/snake.py index 422113c..da37a31 100644 --- a/snake.py +++ b/snake.py @@ -21,7 +21,7 @@ class Snake(): # 按常识，每次移动后，不仅仅是蛇头向前移动一个，更重要的是蛇尾也要向前移，但是在该函数中先不处理蛇尾 # 因为如果蛇吃了食物，此时蛇尾其实并没有移动 - def update(self): + def move_head(self): newHead = {} # 根据移动方向确定蛇头 if self.direction == 'up':