格式化
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@ -59,69 +59,80 @@ def show_end(settings, screen):
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pygame.time.wait(1500)
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settings.game_mode = 0
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def draw_grid(settings, screen):
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#绘制横向线
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# 绘制横向线
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for x in range(0, settings.width, settings.cell_size):
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pygame.draw.line(screen,(40,40,40),(x,0),(x,settings.height))
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#绘制竖向线
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pygame.draw.line(screen, (40, 40, 40), (x, 0), (x, settings.height))
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# 绘制竖向线
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for y in range(0, settings.height, settings.cell_size):
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pygame.draw.line(screen,(40,40,40),(0, y),(settings.width,y))
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pygame.draw.line(screen, (40, 40, 40), (0, y), (settings.width, y))
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def update_screen(settings, screen):
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screen.fill(settings.bg_color)
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draw_grid(settings, screen)
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#绘制蛇
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# 绘制蛇
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def draw_snake(ai_settings, screen, snake):
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#头部用白色
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# 头部用白色
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x = snake.coords[0]['x'] * ai_settings.cell_size
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y = snake.coords[0]['y'] * ai_settings.cell_size
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snake_head_rect = pygame.Rect(x, y, ai_settings.cell_size, ai_settings.cell_size)
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pygame.draw.rect(screen,(255,255,255), snake_head_rect)
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#蛇身内部用浅绿，外框用深绿
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snake_head_rect = pygame.Rect(
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x, y, ai_settings.cell_size, ai_settings.cell_size)
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pygame.draw.rect(screen, (255, 255, 255), snake_head_rect)
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# 蛇身内部用浅绿，外框用深绿
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for coord in snake.coords[1: -1]:
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x = coord['x'] * ai_settings.cell_size
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y = coord['y'] * ai_settings.cell_size
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snake_part_rect = pygame.Rect(x, y, ai_settings.cell_size, ai_settings.cell_size)
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pygame.draw.rect(screen,(0,155,0), snake_part_rect)
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snake_part_inner_rect = pygame.Rect(x + 4, y + 4, ai_settings.cell_size - 8, ai_settings.cell_size - 8)
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pygame.draw.rect(screen,(0,255,0), snake_part_inner_rect)
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#蛇尾用浅绿
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snake_part_rect = pygame.Rect(
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x, y, ai_settings.cell_size, ai_settings.cell_size)
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pygame.draw.rect(screen, (0, 155, 0), snake_part_rect)
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snake_part_inner_rect = pygame.Rect(
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x + 4, y + 4, ai_settings.cell_size - 8, ai_settings.cell_size - 8)
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pygame.draw.rect(screen, (0, 255, 0), snake_part_inner_rect)
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# 蛇尾用浅绿
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coord = snake.coords[-1]
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x = coord['x'] * ai_settings.cell_size
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y = coord['y'] * ai_settings.cell_size
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snake_tail_rect = pygame.Rect(x, y, ai_settings.cell_size, ai_settings.cell_size)
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pygame.draw.rect(screen,(0,255,0), snake_tail_rect)
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snake_tail_rect = pygame.Rect(
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x, y, ai_settings.cell_size, ai_settings.cell_size)
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pygame.draw.rect(screen, (0, 255, 0), snake_tail_rect)
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# 绘制游戏界面
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#绘制游戏界面
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def update_screen(settings, screen, snake):
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screen.fill(settings.bg_color)
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draw_grid(settings, screen)
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#移动蛇
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del snake.coords[-1]#加蛇头
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snake.update()#去蛇尾
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# 移动蛇
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del snake.coords[-1] # 加蛇头
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snake.update() # 去蛇尾
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if not is_game_over(settings, snake):
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settings.game_mode = -1
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else:
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draw_snake(settings, screen, snake)
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pygame.display.flip()
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#暂停一下
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# 暂停一下
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settings.my_clock.tick(settings.clock_frq)
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def is_game_over(settings,snake):
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#碰到左右墙壁
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def is_game_over(settings, snake):
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# 碰到左右墙壁
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if (snake.coords[snake.head_index]['x'] == -1 or snake.coords[snake.head_index]['x'] == settings.cell_w):
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return False
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#碰到上下墙壁
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if(snake.coords[snake.head_index]['y'] == -1 or snake.coords[snake.head_index]['y'] == settings.cell_h):
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# 碰到上下墙壁
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if (snake.coords[snake.head_index]['y'] == -1 or snake.coords[snake.head_index]['y'] == settings.cell_h):
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return False
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#碰到自己
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if(snake.coords[snake.head_index] in snake.coords[1:]):
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# 碰到自己
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if (snake.coords[snake.head_index] in snake.coords[1:]):
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return False
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return True
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#检测游戏过程中的按键
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# 检测游戏过程中的按键
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def check_play_events(snake):
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for event in pygame.event.get():
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if event.type == pygame.QUIT:
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13
main.py
13
main.py
@ -4,27 +4,30 @@ import game_functions as gf
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from snake import Snake
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settings = Settings()
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#设置屏幕
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# 设置屏幕
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screen = pygame.display.set_mode((settings.width, settings.height))
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#添加游戏标题
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# 添加游戏标题
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pygame.display.set_caption('贪吃蛇')
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#创建蛇
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# 创建蛇
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snake = Snake(settings)
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def run_game1():
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gf.check_play_events(snake)
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gf.update_screen(settings, screen, snake)
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def run_game():
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while True:
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if settings.game_mode == 0:
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gf.show_start(settings,screen)
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gf.show_start(settings, screen)
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elif settings.game_mode == -1:
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gf.show_end(settings,screen)
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gf.show_end(settings, screen)
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snake.reset(settings)
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elif settings.game_mode == 1:
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run_game1()
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if __name__ == "__main__":
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pygame.init()
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run_game()
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@ -1,6 +1,7 @@
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import pygame
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import sys
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class Settings:
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def __init__(self):
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self.bg_color = (0, 0, 0) # 背景颜色
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47
snake.py
47
snake.py
@ -1,38 +1,39 @@
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import random
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class Snake():
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def __init__(self,settings):
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def __init__(self, settings):
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self.reset(settings)
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#蛇的初始化
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def reset(self,settings):
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#蛇头的坐标
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# 蛇的初始化
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def reset(self, settings):
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# 蛇头的坐标
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self.start_x = random.randint(5, settings.cell_w - 6)
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self.start_y = random.randint(5, settings.cell_h - 6)
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self.head_index = 0
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#蛇的初始运动方向
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# 蛇的初始运动方向
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self.direction = 'right'
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#蛇的初始坐标字典，初始蛇为蛇头位置及其左边的两个格子
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self.coords = [{'x' : self.start_x, 'y': self.start_y},
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{'x' : self.start_x - 1, 'y': self.start_y},
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{'x' : self.start_x - 2, 'y': self.start_y}]
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#更新蛇，每次蛇移动一步，因此相当于每次移动在蛇的坐标字典中再插入一个新蛇头
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#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
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#因为如果蛇吃了食物，此时蛇尾其实并没有移动
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# 蛇的初始坐标字典，初始蛇为蛇头位置及其左边的两个格子
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self.coords = [{'x': self.start_x, 'y': self.start_y},
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{'x': self.start_x - 1, 'y': self.start_y},
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{'x': self.start_x - 2, 'y': self.start_y}]
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# 更新蛇，每次蛇移动一步，因此相当于每次移动在蛇的坐标字典中再插入一个新蛇头
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# 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
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# 因为如果蛇吃了食物，此时蛇尾其实并没有移动
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def update(self):
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newHead = {}
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#根据移动方向确定蛇头
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# 根据移动方向确定蛇头
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if self.direction == 'up':
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newHead = {'x' : self.coords[self.head_index]['x'],
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'y' : self.coords[self.head_index]['y'] - 1}
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newHead = {'x': self.coords[self.head_index]['x'],
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'y': self.coords[self.head_index]['y'] - 1}
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elif self.direction == 'down':
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newHead = {'x' : self.coords[self.head_index]['x'],
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'y' : self.coords[self.head_index]['y'] + 1}
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newHead = {'x': self.coords[self.head_index]['x'],
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'y': self.coords[self.head_index]['y'] + 1}
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elif self.direction == 'left':
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newHead = {'x' : self.coords[self.head_index]['x'] - 1,
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'y' : self.coords[self.head_index]['y']}
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newHead = {'x': self.coords[self.head_index]['x'] - 1,
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'y': self.coords[self.head_index]['y']}
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elif self.direction == 'right':
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newHead = {'x' : self.coords[self.head_index]['x'] + 1,
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'y' : self.coords[self.head_index]['y']}
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self.coords.insert(0,newHead)
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newHead = {'x': self.coords[self.head_index]['x'] + 1,
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'y': self.coords[self.head_index]['y']}
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self.coords.insert(0, newHead)
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