Recently I have been preparing a few demos for the interview, in order to show themselves, so they are designed and implemented, one is to implement a snake in 50 lines of code, in order to illustrate my own practice of programming one way-write short, in order to understand the language details.
Copy CodeThe code is as follows:
Import SYS, pygame
From pygame.locals Import *
From random import Randrange
Up =lambda x: (X[0]-1,x[1])
Down = lambda x:(x[0]+1,x[1])
left = lambda x: (x[0],x[1]-1)
right = lambda x: (x[0],x[1]+1)
TL = lambda x:x<3 and x+1 or 0
tr = lambda x:x==0 and 3 or x-1
dire = [Up,left,down,right]
move = Lambda x,y:[y (x[0])]+x[:-1]
Grow = Lambda x,y:[y (x[0])]+x
s = [(5,5), (5,6), (5,7)]
D = Up
Food = Randrange (0,30), Randrange (0,40)
Fpsclock=pygame.time.clock ()
Pygame.init ()
Pygame.display.set_mode ((800,600))
Pygame.mouse.set_visible (0)
Screen = Pygame.display.get_surface ()
Screen.fill ((0,0,0))
times=0.0
While True:
time_passed = Fpsclock.tick (30)
If times>=150:
Times =0.0
s = Move (s,d)
Else
Times +=time_passed
For event in Pygame.event.get ():
if Event.type = = QUIT:
Sys.exit ()
if Event.type = = KEYDOWN and Event.key = = K_up:
s = Move (s,d)
if Event.type = = KEYDOWN and Event.key = = K_left:
D=DIRE[TL (Dire.index (d))]
if Event.type = = KEYDOWN and Event.key = = K_right:
D=DIRE[TR (Dire.index (d))]
If S[0]==food:
s = Grow (s,d)
Food =randrange (0,30), Randrange (0,40)
If S[0] in s[1:] or s[0][0]<0 or s[0][0] >= or s[0][1]<0 or s[0][1]>=40:
Break
Screen.fill ((0,0,0))
For R,c in S:
Pygame.draw.rect (screen, (255,0,0), (c*20,r*20,20,20))
Pygame.draw.rect (screen, (0,255,0), (food[1]*20,food[0]*20,20,20))
Pygame.display.update ()
Game:
Description
1. In fact, there is no need to pygame, in some conditions to change the judgment, estimated can be another short half. After your own Python level is high and then come back to try it.
2. But 50 lines of snake code, still readable, write too short to really no.
3. The key is to rotate, move, and so on. These algorithms are implemented with LAMDA expressions, as well as function objects.
4. Which "Walker" can write shorter, younger brother is willing to enlighten ....
Author: aiqier
