我在程序中加入了分数显示，三种特殊食物，将贪吃蛇的游戏逻辑写到了SnakeGame的类中，而不是在Snake类中。

特殊食物:

1.绿色：普通，吃了增加体型

2.红色：吃了减少体型

3.金色：吃了回到最初体型

4.变色食物：吃了会根据食物颜色改变蛇的颜色

#coding=UTF-8from Tkinter import *from random import randintimport tkMessageBoxclass Grid(object): def __init__(self, master=None,height=16, width=24, offset=10, grid_width=50, bg="#808080"): self.height = height self.width = width self.offset = offset self.grid_width = grid_width self.bg = bg self.canvas = Canvas(master, width=self.width*self.grid_width+2*self.offset, height=self.height*self.grid_width+ 2*self.offset, bg=self.bg) self.canvas.pack(side=RIGHT, fill=Y) def draw(self, pos, color, ): x = pos[0] * self.grid_width + self.offset y = pos[1] * self.grid_width + self.offset #outline属性要与网格的背景色（self.bg）相同，要不然会很丑 self.canvas.create_rectangle(x, y, x + self.grid_width, y + self.grid_width, fill=color, outline=self.bg)class Food(object): def __init__(self, grid, color = "#23D978"): self.grid = grid self.color = color self.set_pos() self.type = 1 def set_pos(self): x = randint(0, self.grid.width - 1) y = randint(0, self.grid.height - 1) self.pos = (x, y) def display(self): self.grid.draw(self.pos, self.color)class Snake(object): def __init__(self, grid, color = "#000000"): self.grid = grid self.color = color self.body = [(8, 11), (8, 12), (8, 13)] self.direction = "Up" for i in self.body: self.grid.draw(i, self.color) #这个方法用于游戏重新开始时初始化贪吃蛇的位置 def initial(self): while not len(self.body) == 0: pop = self.body.pop() self.grid.draw(pop, self.grid.bg) self.body = [(8, 11), (8, 12), (8, 13)] self.direction = "Up" self.color = "#000000" for i in self.body: self.grid.draw(i, self.color) #蛇像一个指定点移动 def move(self, new): self.body.insert(0, new) pop = self.body.pop() self.grid.draw(pop, self.grid.bg) self.grid.draw(new, self.color) #蛇像一个指定点移动，并增加长度 def add(self ,new): self.body.insert(0, new) self.grid.draw(new, self.color) #蛇吃到了特殊食物1，剪短自身的长度 def cut_down(self,new): self.body.insert(0, new) self.grid.draw(new, self.color) for i in range(0,3): pop = self.body.pop() self.grid.draw(pop, self.grid.bg) #蛇吃到了特殊食物2，回到最初长度 def init(self, new): self.body.insert(0, new) self.grid.draw(new, self.color) while len(self.body) > 3: pop = self.body.pop() self.grid.draw(pop, self.grid.bg) #蛇吃到了特殊食物3，改变了自身的颜色,纯属好玩 def change(self, new, color): self.color = color self.body.insert(0, new) for item in self.body: self.grid.draw(item, self.color)class SnakeGame(Frame): def __init__(self, master): Frame.__init__(self, master) self.grid = Grid(master) self.snake = Snake(self.grid) self.food = Food(self.grid) self.gameover = False self.score = 0 self.status = ['run', 'stop'] self.speed = 300 self.grid.canvas.bind_all("<KeyRelease>", self.key_release) self.display_food() #用于设置变色食物 self.color_c = ("#FFB6C1","#6A5ACD","#0000FF","#F0FFF0","#FFFFE0","#F0F8FF","#EE82EE","#000000","#5FA8D9","#32CD32") self.i = 0 #界面左侧显示分数 self.m = StringVar() self.ft1 = ('Fixdsys', 40, "bold") self.m1 = Message(master, textvariable=self.m, aspect=5000, font=self.ft1, bg="#696969") self.m1.pack(side=LEFT, fill=Y) self.m.set("Score:"+str(self.score)) #这个方法用于游戏重新开始时初始化游戏 def initial(self): self.gameover = False self.score = 0 self.m.set("Score:"+str(self.score)) self.snake.initial() #type1:普通食物 type2:减少2 type3:大乐透，回到最初状态 type4:吃了会变色 def display_food(self): self.food.color = "#23D978" self.food.type = 1 if randint(0, 40) == 5: self.food.color = "#FFD700" self.food.type = 3 while (self.food.pos in self.snake.body): self.food.set_pos() self.food.display() elif randint(0, 4) == 2: self.food.color = "#EE82EE" self.food.type = 4 while (self.food.pos in self.snake.body): self.food.set_pos() self.food.display() elif len(self.snake.body) > 10 and randint(0, 16) == 5: self.food.color = "#BC8F8F" self.food.type = 2 while (self.food.pos in self.snake.body): self.food.set_pos() self.food.display() else: while (self.food.pos in self.snake.body): self.food.set_pos() self.food.display() def key_release(self, event): key = event.keysym key_dict = {"Up": "Down", "Down": "Up", "Left": "Right", "Right": "Left"} #蛇不可以像自己的反方向走 if key_dict.has_key(key) and not key == key_dict[self.snake.direction]: self.snake.direction = key self.move() elif key == 'p': self.status.reverse() def run(self): #首先判断游戏是否暂停 if not self.status[0] == 'stop': #判断游戏是否结束 if self.gameover == True: message = tkMessageBox.showinfo("Game Over", "your score: %d" % self.score) if message == 'ok': self.initial() if self.food.type == 4: color = self.color_c[self.i] self.i = (self.i+1)%10 self.food.color = color self.food.display() self.move(color) else: self.move() self.after(self.speed, self.run) def move(self, color="#EE82EE"): # 计算蛇下一次移动的点 head = self.snake.body[0] if self.snake.direction == 'Up': if head[1] - 1 < 0: new = (head[0], 16) else: new = (head[0], head[1] - 1) elif self.snake.direction == 'Down': new = (head[0], (head[1] + 1) % 16) elif self.snake.direction == 'Left': if head[0] - 1 < 0: new = (24, head[1]) else: new = (head[0] - 1, head[1]) else: new = ((head[0] + 1) % 24, head[1]) #撞到自己，设置游戏结束的标志位，等待下一循环 if new in self.snake.body: self.gameover=True #吃到食物 elif new == self.food.pos: if self.food.type == 1: self.snake.add(new) elif self.food.type == 2: self.snake.cut_down(new) elif self.food.type == 4: self.snake.change(new, color) else: self.snake.init(new) self.display_food() self.score = self.score+1 self.m.set("Score:" + str(self.score)) #什么都没撞到，继续前进 else: self.snake.move(new)if __name__ == '__main__': root = Tk() snakegame = SnakeGame(root) snakegame.run() snakegame.mainloop()

总结

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