87 lines
2.2 KiB
Python
87 lines
2.2 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/>.
|
|
#
|
|
# ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
|
|
#
|
|
# direction.py
|
|
# --------------------
|
|
# date created : Tue Aug 7 2012
|
|
# copyright : (C) 2012 Niels G. W. Serup
|
|
# maintained by : Niels G. W. Serup <ns@metanohi.name>
|
|
|
|
"""Directions."""
|
|
|
|
class Direction(object):
|
|
@staticmethod
|
|
def next_pos(pos):
|
|
raise NotImplementedError
|
|
|
|
@staticmethod
|
|
def to_str():
|
|
raise NotImplementedError
|
|
|
|
@staticmethod
|
|
def from_sakse(p):
|
|
return {(0, -1): Up,
|
|
(0, 1): Down,
|
|
(-1, 0): Left,
|
|
(1, 0): Right}[p]
|
|
|
|
class Up(Direction):
|
|
@staticmethod
|
|
def next_pos(pos):
|
|
x, y = pos
|
|
return x, y - 1
|
|
|
|
@staticmethod
|
|
def to_str():
|
|
return 'up'
|
|
|
|
class Right(Direction):
|
|
@staticmethod
|
|
def next_pos(pos):
|
|
x, y = pos
|
|
return x + 1, y
|
|
|
|
@staticmethod
|
|
def to_str():
|
|
return 'right'
|
|
|
|
class Down(Direction):
|
|
@staticmethod
|
|
def next_pos(pos):
|
|
x, y = pos
|
|
return x, y + 1
|
|
|
|
@staticmethod
|
|
def to_str():
|
|
return 'down'
|
|
|
|
class Left(Direction):
|
|
@staticmethod
|
|
def next_pos(pos):
|
|
x, y = pos
|
|
return x - 1, y
|
|
|
|
@staticmethod
|
|
def to_str():
|
|
return 'left'
|
|
|
|
all_directions = [Up, Right, Down, Left]
|
|
_sp = lambda n: lambda d: all_directions[(all_directions.index(d) + n) % 4]
|
|
succ, pred = _sp(1), _sp(-1)
|
|
isDirection = all_directions.__contains__
|