Silly Chess

chess.py

import sys
from subprocess import call
from time import sleep
import readchar

BOARD_L1=[
  '□■'*4,
  '■□'*4,
]*4

BOARD_L2=[
 '♜♞♝♛♚♝♞♜',
 "\u265f"*8,
 ' '*8,
 ' '*8,
 ' '*8,
 ' '*8,
 '♙'*8,
 '♖♘♗♕♔♗♘♖',
]
BOARD_L2=[list(l) for l in BOARD_L2]
POS=[0,0]
HOLD=[9,9]

def print_board(current, hold):
  call('clear')
  (ci, cj) = current
  (hi, hj) = hold
  print('  1 2 3 4 5 6 7 8')
  for i in range(0, 8):
    sys.stdout.write(chr(ord('a')+i))
    sys.stdout.write(' ')
    for j in range(0, 8):
     l2=BOARD_L2[i][j]
     sys.stdout.write(l2 if l2 != ' ' else BOARD_L1[i][j])
     sys.stdout.write('↩' if ci==i and cj==j else ('*' if hi==i and hj==j else ' '))
    sys.stdout.write("\n")
  print("\nUse arrows to move. Enter to select, <ctrl-D> to exit")

def move(i1, j1, i2, j2):
  a, b=BOARD_L2[i1][j1], BOARD_L2[i2][j2]
  BOARD_L2[i1][j1], BOARD_L2[i2][j2]=b,a

def on_key_release(key):
    if key == '\x1b[C':
        POS[1]+=1
    elif key == '\x1b[D':
        POS[1]-=1
    elif key == '\x1b[A':
        POS[0]-=1
    elif key == '\x1b[B':
        POS[0]+=1
    elif key == '\n':
        if HOLD[0]==9:
          HOLD[0]=POS[0]
          HOLD[1]=POS[1]
        else:
          return True
    elif key == '\x04':
        exit()
    return False

def loop():
  while True:
    print_board(POS,HOLD)
    ch = readchar.readkey()
    swap = on_key_release(ch)
    if swap:
      _from=HOLD
      _to=POS
      # TODO: validate the move...
      move(_from[0],_from[1], _to[0],_to[1])
      HOLD[0]=9
      HOLD[1]=9
      sleep(0.3)

loop()