snake: snake.py annotate

snake

annotate snake.py @ 36:639470c54107

snake.Rule.load: added check that rules are exactly 7 lines long

author	Daniil Alexeyevsky <me.dendik@gmail.com>
date	Sun, 19 Dec 2010 22:25:27 +0300
parents	dc8b4c81a72a
children	67e6785396e1

rev	line source
me@34	1 import engine
me@34	2
me@34	3 def preprocess(line):
me@34	4 if '//' in line:
me@34	5 line = line[:line.index('//')]
me@34	6 line = line.rstrip()
me@34	7 return line
martiran@30	8
martiran@30	9 class Snake(object):
martiran@32	10 def __init__ (self, cells, color):
martiran@32	11 self.cells = cells
martiran@32	12 self.color = color
martiran@32	13 self.rules = []
me@34	14
me@34	15 def load (self, file):
me@34	16 magic, name = preprocess(file.readline()).split(' ', 1)
me@34	17 assert magic == "snake", "This is not snake file"
me@34	18 while True:
me@34	19 line = preprocess(file.readline())
me@34	20 if line == 'end':
me@34	21 break
me@34	22 assert line == '', "Rules must be separated by empty lines"
me@34	23 self.rules.append(Rule().load(file))
me@34	24
martiran@30	25 def fill (self):
martiran@32	26 for cell in self.cells:
martiran@32	27 cell.snake = self
martiran@31	28 snake.cells[0].type = 'head'
martiran@31	29 snake.cells[-1].type = 'tail'
martiran@31	30 snake.cells[1:-1].type = 'body'
martiran@31	31 return
me@34	32
martiran@30	33 class Rule(object):
me@34	34
me@34	35 codes = {
me@34	36 'h': 'head',
me@34	37 'b': 'body',
me@34	38 't': 'tail',
me@34	39 '#': 'wall',
me@34	40 ' ': 'any',
me@34	41 '-': 'empty',
me@34	42 }
me@34	43
martiran@32	44 def __init__ (self, snake):
martiran@32	45 self.snake = snake
me@34	46 self.direction = (1, 0)
me@34	47 self.pattern = {}
me@34	48
me@34	49 def load (self, file):
me@34	50 y = 0
me@34	51 for line in file:
me@34	52 line = preprocess(line)
me@34	53 if y == 0 and line == '':
me@34	54 continue
me@36	55 if y == 7:
me@36	56 break
me@34	57 assert line[-1] == ';', "Rule lines must end with semicolon"
me@34	58 assert len(line) == 8, "Rule lines must be exactly 7 chars long"
me@34	59 for x, char in enumerate(line[:8]):
me@34	60 self.parse_cell(x, y, char)
me@34	61 y += 1
me@34	62
me@34	63 def parse_cell(self, x, y, char):
me@34	64 assert char.lower() in self.codes, "Illegal symbol in rule: %s" % char
me@34	65 cell = engine.Cell(x, y, None)
me@34	66 if char in 'htb':
me@34	67 if char.islower():
me@34	68 cell.snake = 'my'
me@34	69 else:
me@34	70 cell.snake = 'enemy'
me@34	71 cell.type = self.codes[char.lower()]
me@34	72 self.pattern[x, y] = cell
me@34	73
martiran@32	74 def applies (self, field, x, y):
me@35	75 pass
me@34	76
martiran@32	77 def rotate (self, rot):
martiran@30	78 pass
me@34	79
me@34	80 # vim: set ts=4 sts=4 sw=4 et: