94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
#!/usr/bin/env python
|
|
|
|
# This file is part of ROBOTGAME
|
|
#
|
|
# ROBOTGAME is free software: you can redistribute it and/or modify it under the
|
|
# terms of the GNU General Public License as published by the Free Software
|
|
# Foundation, either version 3 of the License, or (at your option) any later
|
|
# version.
|
|
#
|
|
# ROBOTGAME is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along with
|
|
# ROBOTGAME. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
|
|
#
|
|
# rollingstone.py
|
|
# --------------------
|
|
# date created : Tue Aug 7 2012
|
|
# copyright : (C) 2012 Niels G. W. Serup
|
|
# maintained by : Niels G. W. Serup <ns@metanohi.name>
|
|
|
|
"""Logic for rolling."""
|
|
|
|
from __future__ import print_function
|
|
|
|
class RollingStoneError(Exception):
|
|
pass
|
|
|
|
class Field(object):
|
|
def next_posdir(self):
|
|
raise NotImplementedError
|
|
|
|
class Start(Field):
|
|
def __init__(self, direction):
|
|
self.direction = direction
|
|
|
|
def next_posdir(self, pos, direc):
|
|
return self.direction.next_pos(pos), self.direction
|
|
|
|
class Turn(Field):
|
|
def __init__(self, direction):
|
|
self.direction = direction
|
|
|
|
def next_posdir(self, pos, direc):
|
|
return self.direction.next_pos(pos), self.direction
|
|
|
|
class Goal(Field):
|
|
def next_posdir(self, pos, direc):
|
|
return pos, direc
|
|
|
|
class Stone(Field):
|
|
def next_posdir(self, pos, direc):
|
|
return pos, direc
|
|
|
|
|
|
def step(playfield, pos, direc):
|
|
field = _at(playfield, pos)
|
|
if field is not None:
|
|
return field.next_posdir(pos, direc)
|
|
return direc.next_pos(pos), direc
|
|
|
|
def reaches_goal(playfield, max_steps):
|
|
pos = _find_start(playfield)
|
|
direc = None
|
|
for i in range(max_steps):
|
|
pos, direc = step(playfield, pos, direc)
|
|
if isGoal(playfield, pos):
|
|
return True
|
|
if isStone(playfield, pos):
|
|
return False
|
|
return False
|
|
|
|
def _find_start(playfield):
|
|
for y in range(len(playfield)):
|
|
for x in range(len(playfield[y])):
|
|
if isStart(playfield, (x, y)):
|
|
return (x, y)
|
|
raise RollingStoneError("Missing Start field")
|
|
|
|
def _at(playfield, pos):
|
|
x, y = pos
|
|
return playfield[y][x]
|
|
|
|
_is = lambda t: lambda playfield, pos: isinstance(_at(playfield, pos), t)
|
|
|
|
(isGoal, isTurn, isStart, isStone) = (_is(Goal), _is(Turn), _is(Start), _is(Stone))
|
|
|
|
|
|
|
|
def generate_playfield():
|