python实现贪吃蛇
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# encoding:utf-8
importtkMessageBox
fromTkinter import Tk, Canvas, Frame
from random import randint
import sys
class Grid:
def __init__(self, master = None, window_width = 500, window_height = 500, grid_width = 25):
self.width = grid_width
self.bg = 7
self.start = 2 # 50 / 25
self.end = 18 # 450 / 25
self.color = ['yellow', 'red', 'pink', 'black', 'orange', 'green', 'purple', 'cyan']
self.canvas = Canvas(master, width = window_width, height = window_height, bg = self.color[self.bg])
self.draw_wall()
self.canvas.pack()
defdraw_rect(self, x, y, clr):
self.canvas.create_rectangle(x, y, x + self.width, y + self.width, fill = self.color[clr], outline = self.color[self.bg])
defdraw_wall(self):
w = self.width
s = self.start * w
e = self.end * w
fori in range(s, e, w):
self.canvas.create_rectangle(i, s, i + w, s + w, fill = 'green', outline = self.color[self.bg])
self.canvas.create_rectangle(i, e - w, i + w, e, fill = 'green', outline = self.color[self.bg])
self.canvas.create_rectangle(s, i, s + w, i + w, fill = 'green', outline = self.color[self.bg])
self.canvas.create_rectangle(e - w, i, e, i + w, fill = 'green', outline = self.color[self.bg])
classsnakenode:
def __init__(self, clr, x, y):
self.clr = clr
self.x = x
self.y = y
class Food:
def __init__(self, Grid):
self.grid = Grid
self.set_food()
defset_food(self):
min = self.grid.start + 1
max = self.grid.end - 2
self.x = randint(min, max) * 25
self.y = randint(min, max) * 25
self.clr = randint(0, len(self.grid.color) - 2)
def display(self):
self.grid.draw_rect(self.x, self.y, self.clr)
class snake:
def __init__(self, Grid):
self.grid = Grid
self.init_snake()
self.direction = 'Up'
self.dir_x = [0, 0, -1, 1]
self.dir_y = [-1, 1, 0, 0]
self.dir = {'Up':0, 'Down':1, 'Left':2, 'Right':3}
self.pause = 1
self.dead = 0
self.food = Food(self.grid)
self.display_food()
definit_snake(self):
s1 = snakenode(0, 100, 300)
s2 = snakenode(1, 100, 325)
s3 = snakenode(2, 100, 350)
self.body = [s1, s2, s3]
defdisplay_snake(self):
for node in self.body:
self.grid.draw_rect(node.x, node.y, node.clr)
defdisplay_food(self):
for node in self.body:
ifnode.x == self.food.x and node.y == self.food.y:
self.food.set_food()
else:
break
self.food.display()
def move(self):
index = self.dir[self.direction]
m = self.dir_x[index] * self.grid.width + self.body[0].x
n = self.dir_y[index] * self.grid.width + self.body[0].y
if m == self.food.x and n == self.food.y: # 吃到食物sn = snakenode(self.food.clr, m, n)
self.body.insert(0, sn)
self.display_food()
return
s = (m / self.grid.width)
t = (n / self.grid.width)
b1 = s == self.grid.start or s == self.grid.end - 1
b2 = t == self.grid.start or t == self.grid.end - 1
if b1 or b2: # 撞到墙
self.dead = 1