Python implementation of Snake game instance code

This article mainly introduces the use of Python to write a snake game instance code, very good, with reference value, need to refer to a friend

I added a score display in the program, three kinds of special food, the game logic of the snake is written into the Snakegame class, rather than in the snake class.

Special foods:

1. Green: normal, eat to increase body size

2. Red: Eat to reduce body size

3. Gold: Eat back to the original body

4. Changing food: Eating will change the color of the snake depending on the color of the food.

#coding =utf-8from Tkinter Import *from random import Randintimport tkmessageboxclass Grid (object): Def __init__ (self, MAS Ter=none,height=16, width=24, offset=10, grid_width=50, bg= "#808080"): self.height = height self.width = width se Lf.offset = Offset Self.grid_width = grid_width self.bg = BG Self.canvas = Canvas (Master, WIDTH=SELF.WIDTH*SELF.G Rid_width+2*self.offset, height=self.height*self.grid_width+ 2*self.offset, b g=self.bg) Self.canvas.pack (Side=right, fill=y) def draw (self, POS, color,): x = pos[0] * self.grid_width + SELF.O Ffset y = pos[1] * self.grid_width + self.offset #outline属性要与网格的背景色 (self.bg) is the same, otherwise it will be ugly self.canvas.create_rectangl E (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, S    Elf.color) class Snake (object): Def __init__ (self, grid, color = "#000000"): Self.grid = Grid Self.color = Color   Self.body = [(8, one), (8, 8)] 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): When not len (self.body) = = 0:pop = Self.body.pop () Self.grid. Draw (pop, self.grid.bg) self.body = [(8, one), (8, 8)] self.direction = "up" Self.color = "#000000" F  Or 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, and add length def add (self , new): Self.body.insert (0, new) Self.grid.draw (new, Self.color) #蛇吃到了特殊食物1, cut the length of its own def Cut_down (self,new): Sel   F.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, back to the original length 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, changed its own color, pure fun def change (SE LF, new, color): Self.color = Color Self.body.insert (0, new) for item in Self.body:self.grid.draw (item, SEL    F.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 = 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 ', ' max ', ' bold ') Self.m1 = Message (Master, Textvariab LE=SELF.M, aspect=5000, Font=self.ft1, bg= "#696969") Self.m1.pack (Side=left, fill=y) Self.m.set ("Score:" +str (Self.sc Ore)) #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: normal food type2: reduced by 2 Type3: Lotto, back to the original state type4: Eat will change color def display_food (self): Self.food. color = "#23D978" Self.food.type = 1 if randint (0, +) = = 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) > Ten and Randint (0, +) = = 5:self.food.colo r = "#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-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 Go if Key_dict.has_key (key) and not key = = Key_dict[self.snake.direction]: self.snake.direction = key Self.mov      E () elif key = = ' P ': Self.status.reverse () def run: #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.scor        e) 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"): # Calculates the next moving point of the snake head = self.snake.body[0] If Self.sna Ke.direction = = ' up ': if HEAD[1]-1 < 0:new = (Head[0], +) Else:new = (Head[0], head[1]-1       ) elif self.snake.direction = = ' down ': New = (Head[0], (head[1] + 1)% of elif self.snake.direction = = ' Left ':  If head[0]-1 < 0:new = ((, head[1]) Else:new = (Head[0]-1, head[1]) else:new =     ((Head[0] + 1)%, head[1]) #撞到自己, set the end-of-game flag and wait for the next loop 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.sna Ke.init (new) Self.display_food () Self.score = Self.score+1 Self.m.set ("Score:" + str (self.score)) #什么都没撞 Come on, move on Else:selF.snake.move (new) if __name__ = = ' __main__ ': root = Tk () Snakegame = Snakegame (root) snakegame.run () Snakegame.mainloop ()

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