贪吃蛇游戏趣味版

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

游戏开始，出现普通绿色食物：

特殊变色食物，蛇吃了会变成食物的颜色：

金色食物，蛇吃了可以变回初始状态：

#coding=UTF-8from Tkinter import *from random import randintimport tkMessageBox

class 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()