python中grid[pos_Python写的贪吃蛇游戏例子

python中grid[pos_Python写的贪吃蛇游戏例子

from Tkinter import *

import tkMessageBox,sys

from random import randint

class Grid(object):

def __init__(self,master=None,window_width=800,window_height=600,grid_width=50,offset=10):

self.height = window_height

self.width = window_width

self.grid_width = grid_width

self.offset = offset

self.grid_x = self.width/self.grid_width

self.grid_y = self.height/self.grid_width

self.bg = "#EBEBEB"

self.canvas = Canvas(master, width=self.width+2*self.offset, height=self.height+2*self.offset, bg=self.bg)

self.canvas.pack()

self.grid_list()

def draw(self, pos, color,):

x = pos[0]*self.grid_width + self.offset

y = pos[1]*self.grid_width + self.offset

self.canvas.create_rectangle(x, y, x+self.grid_width, y+self.grid_width,fill=color,outline=self.bg)

def grid_list(self):

grid_list = []

for y in range(0,self.grid_y):

for x in range(0,self.grid_x):

grid_list.append((x,y))

self.grid_list = grid_list

class Food(object):

def __init__(self, Grid):

self.grid = Grid

self.color = "#23D978"

self.set_pos()

def set_pos(self):

x = randint(0,self.grid.grid_x - 1)

y = randint(0,self.grid.grid_y - 1)

self.pos =  (x, y)

def display(self):

self.grid.draw(self.pos,self.color)

class Snake(object):

def __init__(self, Grid):

self.grid = Grid

self.body = [(10,6),(10,7),(10,8)]

self.direction = "Up"

self.status = ['run','stop']

self.speed = 300

self.color = "#5FA8D9"

self.food = Food(self.grid)

self.display_food()

self.gameover = False

self.score = 0

def available_grid(self):

return [i for i in self.grid.grid_list if i not in self.body[2:]]

def change_direction(self, direction):

self.direction = direction

def display(self):

for (x,y) in self.body:

self.grid.draw((x,y),self.color)

def display_food(self):

while(self.food.pos in self.body):

self.food.set_pos()

self.food.display()

def move(self):

head = self.body[0]

if self.direction == 'Up':

new = (head[0], head[1]-1)

elif self.direction == 'Down':

new = (head[0], head[1]+1)

elif self.direction == 'Left':

new = (head[0]-1,head[1])

else:

new = (head[0]+1,head[1])

if not self.food.pos == head:

pop = self.body.pop()

self.grid.draw(pop,self.grid.bg)

else:

self.display_food()

self.score += 1

self.body.insert(0,new)

if not new in self.available_grid():

self.status.reverse()

self.gameover = True

else:

self.grid.draw(new,color=self.color)

class SnakeGame(Frame):

def __init__(self,master=None, *args, **kwargs):

Frame.__init__(self, master)

self.master = master

self.grid = Grid(master=master,*args, **kwargs)

self.snake = Snake(self.grid)

self.bind_all("", self.key_release)

self.snake.display()

def run(self):

if not self.snake.status[0] == 'stop':

self.snake.move()

if self.snake.gameover == True:

message =  tkMessageBox.showinfo("Game Over", "your score: %d" % self.snake.score)

if message == 'ok':

sys.exit()

self.after(self.snake.speed,self.run)

def key_release(self, event):

key = event.keysym

key_dict = {"Up":"Down","Down":"Up","Left":"Right","Right":"Left"}

if key_dict.has_key(key) and not key == key_dict[self.snake.direction]:

self.snake.change_direction(key)

self.snake.move()

elif key == 'p':

self.snake.status.reverse()

if __name__ == '__main__':

root = Tk()

snakegame = SnakeGame(root)

snakegame.run()

snakegame.mainloop()