Use Python to write a snake

Reference Code http://blog.csdn.net/leepwang/article/details/7640880

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-8
From Tkinter Import *
From random import Randint
Import 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) is the same, otherwise it will be ugly
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, and increase the 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 its length.
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, 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, changing the color of their own, is purely fun
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 ', Max, "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: General food type2: reduced by 2 Type3: Lotto, back to the original state type4: Eating will change color
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) > 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"):
# Calculate the next point the snake moves
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 = (Head[1])
Else
New = (Head[0]-1, head[1])
Else
New = ((Head[0] + 1)%, head[1])
#撞到自己, set the game to the end of the flag bit, waiting 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.snake.init (New)
Self.display_food ()
Self.score = self.score+1
Self.m.set ("Score:" + str (self.score))
#什么都没撞到, move on.
Else
Self.snake.move (New)

if __name__ = = ' __main__ ':
root = Tk ()
Snakegame = Snakegame (Root)
Snakegame.run ()
Snakegame.mainloop ()

Use Python to write a snake