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import curses
import random
class ooPuzzle:
"""Encapsulates a oo puzzle state.
No rendering information is stored or interpreted here.
Attributes.
X,Y : horizontal and vertical size of the puzzle
pieces : dictionary mapping (x,y) to range(6)
orients : dictionary mapping (x,y) to range(4)
"""
def __init__(self, X, Y, game_id=None, inverted=False, toroidal=False):
"""Create a new ooPuzzle instance.
Arguments.
X,Y : horizontal and vertical size of the puzzle
game_id : passed to ooPuzzle.set_pieces_from_game_id
inverted : bool for swapping to "dark mode"
toroidal : bool for looping around the end of the puzzle
NotImplemented: inverted, toroidal
"""
self.X, self.Y = X, Y
self.inverted = inverted
self.toroidal = toroidal
self.pieces = {}
self.orients = {}
self.set_pieces_from_game_id(game_id)
EDGES_TO_PIECE_ORIENT = { (0, 0, 0, 0) : (0, 0),
(1, 0, 0, 0) : (1, 0),
(0, 1, 0, 0) : (1, 1),
(0, 0, 1, 0) : (1, 2),
(0, 0, 0, 1) : (1, 3),
(1, 1, 0, 0) : (2, 0),
(0, 1, 1, 0) : (2, 1),
(0, 0, 1, 1) : (2, 2),
(1, 0, 0, 1) : (2, 3),
(1, 0, 1, 0) : (3, 0),
(0, 1, 0, 1) : (3, 1),
(0, 1, 1, 1) : (4, 0),
(1, 0, 1, 1) : (4, 1),
(1, 1, 0, 1) : (4, 2),
(1, 1, 1, 0) : (4, 3),
(1, 1, 1, 1) : (5, 0) }
PIECE_ORIENT_TO_EDGES = { (0, 0) : (0, 0, 0, 0),
(0, 1) : (0, 0, 0, 0),
(0, 2) : (0, 0, 0, 0),
(0, 3) : (0, 0, 0, 0),
(1, 0) : (1, 0, 0, 0),
(1, 1) : (0, 1, 0, 0),
(1, 2) : (0, 0, 1, 0),
(1, 3) : (0, 0, 0, 1),
(2, 0) : (1, 1, 0, 0),
(2, 1) : (0, 1, 1, 0),
(2, 2) : (0, 0, 1, 1),
(2, 3) : (1, 0, 0, 1),
(3, 0) : (1, 0, 1, 0),
(3, 1) : (0, 1, 0, 1),
(3, 2) : (1, 0, 1, 0),
(3, 3) : (0, 1, 0, 1),
(4, 0) : (1, 1, 1, 1),
(4, 1) : (1, 1, 1, 1),
(4, 2) : (1, 1, 1, 1),
(4, 3) : (1, 1, 1, 1) }
def set_pieces_from_edges(self, horiz_edges, vert_edges):
"""Convert edge dictionaries into a puzzle state.
Adjacent edges in a solution must be
either both filled or both unfilled,
and so a bit of data is assigned to each pair.
vert_edges is the dictionary for vertical pairs
key: (x, row)
x: the usual x-coordinate of the piece
row: the y-coordinate or y+1, depending on whether
you want the pair above or below the piece
: row == 0 and row == self.Y are border edges
so it's good to think of row as 1-indexed
horiz_edges is the dictionary for horizontal pairs
key: (col, y)
col: the x-coord or x+1, same as row but left or right
y: the usual y-coord
"""
for x in range(self.X):
for y in range(self.Y):
left = horiz_edges[x , y]
right = horiz_edges[x+1, y]
up = vert_edges[x, y ]
down = vert_edges[x, y+1]
piece, orient = \
self.EDGES_TO_PIECE_ORIENT[left, up, right, down]
self.pieces [x, y] = piece
self.orients[x, y] = orient
#TODO: properly account for the borders if toroidal
def set_pieces_from_game_id(self, game_id=None):
"""Convert game_id value into a solution puzzle state.
game_id is an integer
if toroidal: in range(2**( 2*X*Y ))
if not toroidal: in range(2**( (X-1)*Y + X*(Y-1) ))
if None, then a random game_id is generated
"""
# compute:
# n_horiz, the number of horizontal edge pairs
# n_vert, the number of vertical edge pairs
shift = -int(not self.toroidal)
n_col = self.X + shift
n_row = self.Y + shift
n_horiz = n_col * self.Y
n_vert = self.X * n_row
# generate and record game_id
if game_id == None:
game_id = random.randrange(0, 2**(n_horiz + n_vert))
self.game_id = game_id
# prepare to record edges for self.set_pieces_from_edges
vert_edges = {}
horiz_edges = {}
# set the border edges
# if toroidal, these will be overwritten
for x in range(self.X):
vert_edges[x, 0] = 0
vert_edges[x, self.Y] = 0
for y in range(self.Y):
horiz_edges[ 0, y] = 0
horiz_edges[self.X, y] = 0
# set the edges determined by game_id
for i in range(n_vert):
row, x = divmod(i, self.X)
game_id, bit = divmod(game_id, 2)
vert_edges[x, row+1] = bit
for i in range(n_horiz):
col, y = divmod(i, self.Y)
game_id, bit = divmod(game_id, 2)
horiz_edges[col+1, y] = bit
# turn edges into pieces
self.set_pieces_from_edges(horiz_edges, vert_edges)
def random_state(self):
"""Randomly rotate the current pieces."""
for x in range(self.X):
for y in range(self.Y):
self.pieces[x, y] = random.randint(4)
def is_solved(self):
"""Checks whether the puzzle is in a solved state."""
# check internal edge pairs
for x in range(self.X - 1):
for y in range(self.Y - 1):
# check horizontal edge pair right of (x, y)
l_piece = self.pieces [x, y]
l_orient = self.orients[x, y]
r_piece = self.pieces [x+1, y]
r_orient = self.orients[x+1, y]
l_edge = self.PIECE_ORIENT_TO_EDGES[l_piece, l_orient][2]
r_edge = self.PIECE_ORIENT_TO_EDGES[r_piece, r_orient][0]
if l_edge != r_edge: return False
# check vertical edge pair below (x, y)
u_piece = self.pieces [x, y]
u_orient = self.orients[x, y]
d_piece = self.pieces [x, y+1]
d_orient = self.orients[x, y+1]
u_edge = self.PIECE_ORIENT_TO_EDGES[u_piece, u_orient][3]
d_edge = self.PIECE_ORIENT_TO_EDGES[d_piece, d_orient][1]
if u_edge != d_edge: return False
# check boundary edge pairs
#TODO: check boundary edges dependent on toroidal
return True
class ooPlay:
"""Encapsulates an oo game instance.
Renders and interacts with an ooPuzzle instance.
"""
def __init__(self, scr):
"""Create a new ooPlay instance.
Arguments.
scr : curses screen object used for display
"""
self.scr = scr
self.Y, self.X = self.scr.getmaxyx()
self.puzzle = ooPuzzle(self.X, self.Y-2)
self.puzzle.random_state()
self.scr.clear()
# draw the help area and board state
border_line = self.X * "═"
self.scr.addstr(self.Y - 2, 0, border_line)
self.display()
PIECE_ORIENT_TO_STRING = \
[" ",
"╸╵╺╷",
"┙┕┍┑",
"━│━│",
"┝┯┥┷",
"┿┿┿┿"]
def display(self):
"""Display the state of the board, refresh screen."""
pass
def keyloop(self):
"""Wait for and parse keypress."""
pass
def main():
curses.wrapper(ooPlay)
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