/usr/share/sugar/activities/Connect.activity/game.py is in sugar-connect-activity 22-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
from gettext import gettext as _
import gtk
from dbus import Interface
from dbus.service import method, signal
from dbus.gobject_service import ExportedGObject
SERVICE = "org.freedesktop.Telepathy.Tube.Connect"
IFACE = SERVICE
PATH = "/org/freedesktop/Telepathy/Tube/Connect"
_logger = logging.getLogger('connect-activity.game')
def redraw(grid):
"""Utility function to force a redraw of a Gtk widget."""
grid.queue_draw()
def dump_grid(seq):
grid = ''
for row in seq:
row_str = ''
for col in row:
if col == -1:
row_str += ' |'
else:
row_str += '%d|' % col
grid = '%s%s\n' % (grid, row_str)
_logger.debug('Grid state is now:\n%s', grid)
class ConnectGame(ExportedGObject):
def __init__(self, tube, grid, is_initiator, buddies_panel, info_panel,
owner, activity):
super(ConnectGame, self).__init__(tube, PATH)
self.tube = tube
self.grid = grid
self.is_initiator = is_initiator
self.entered = False
self.player_id = None
self.buddies_panel = buddies_panel
self.info_panel = info_panel
self.owner = owner
self.activity = activity
# list indexed by player ID
# 0, 1 are players 0, 1
# 2+ are the spectator queue, 2 is to play next
self.ordered_bus_names = []
self.tube.watch_participants(self.participant_change_cb)
self.grid.connect('insert-requested', self.insert_requested_cb)
def participant_change_cb(self, added, removed):
# Initiator is player 0, other player is player 1.
_logger.debug('adding participants: %r', added)
_logger.debug('removing participants: %r', removed)
for handle, bus_name in added:
buddy = self.tube.get_buddy(handle)
_logger.debug('Buddy %r was added', buddy)
if buddy is not None:
self.buddies_panel.add_watcher(buddy)
for handle in removed:
buddy = self.tube.get_buddy(handle)
_logger.debug('Buddy %r was removed', buddy)
if buddy is not None:
self.buddies_panel.remove_watcher(buddy)
try:
self.ordered_bus_names.remove(self.tube.participants[handle])
except ValueError:
# already absent
pass
if not self.entered:
self.tube.add_signal_receiver(self.insert_cb, 'Insert', IFACE,
path=PATH, sender_keyword='sender')
if self.is_initiator:
_logger.debug('I am the initiator, so making myself player 0')
self.add_hello_handler()
self.ordered_bus_names = [self.tube.get_unique_name()]
self.player_id = 0
self.buddies_panel.add_player(self.owner)
else:
_logger.debug('Hello, everyone! What did I miss?')
self.Hello()
self.entered = True
@signal(dbus_interface=IFACE, signature='')
def Hello(self):
"""Request that this player's Welcome method is called to bring it
up to date with the game state.
"""
@method(dbus_interface=IFACE, in_signature='aanas', out_signature='')
def Welcome(self, grid, bus_names):
"""To be called on the incoming player by the other players to
inform them of the game state.
FIXME: nominate a "referee" (initially the initiator) responsible
for saying Welcome, elect a new referee when the current referee
leaves? This could also be used to make the protocol robust against
cheating/bugs
"""
if self.player_id is None:
_logger.debug('Welcomed to the game. Player bus names are %r',
bus_names)
self.grid.grid = grid
dump_grid(grid)
self.ordered_bus_names = bus_names
self.player_id = bus_names.index(self.tube.get_unique_name())
# OK, now I'm synced with the game, I can welcome others
self.add_hello_handler()
buddy = self.tube.get_buddy(
self.tube.bus_name_to_handle[bus_names[0]])
self.buddies_panel.add_player(buddy)
buddy = self.tube.get_buddy(
self.tube.bus_name_to_handle[bus_names[1]])
self.buddies_panel.add_player(buddy)
if self.get_active_player() == self.player_id:
_logger.debug("It's my turn already!")
self.change_turn()
redraw(self.grid)
else:
_logger.debug("I've already been welcomed, doing nothing")
def add_hello_handler(self):
self.tube.add_signal_receiver(self.hello_cb, 'Hello', IFACE,
path=PATH, sender_keyword='sender')
@signal(dbus_interface=IFACE, signature='n')
def Insert(self, column):
"""Signal that the local player has placed a disc."""
assert column >= 0
assert column < 7
def hello_cb(self, sender=None):
"""Tell the newcomer what's going on."""
_logger.debug('Newcomer %s has joined', sender)
self.ordered_bus_names.append(sender)
if len(self.ordered_bus_names) == 2:
buddy = self.tube.get_buddy(self.tube.bus_name_to_handle[sender])
self.buddies_panel.add_player(buddy)
_logger.debug('Bus names are now: %r', self.ordered_bus_names)
_logger.debug('Welcoming newcomer and sending them the game state')
self.tube.get_object(sender, PATH).Welcome(self.grid.grid,
self.ordered_bus_names,
dbus_interface=IFACE)
if (self.player_id == 0 and len(self.ordered_bus_names) == 2):
_logger.debug("This is my game and an opponent has joined. "
"I go first")
self.change_turn()
def insert_cb(self, column, sender=None):
# Someone placed a disc
handle = self.tube.bus_name_to_handle[sender]
_logger.debug('Insert(%d) from %s', column, sender)
if self.tube.self_handle == handle:
_logger.debug('Ignoring Insert signal from myself: %d', column)
return
try:
winner = self.grid.insert(column, self.get_active_player())
except ValueError:
return
dump_grid(self.grid.grid)
if winner is not None:
_logger.debug('Player with handle %d wins', handle)
self.info_panel.show(_('The other player wins!'))
redraw(self.grid)
return
if self.grid.is_full():
_logger.debug('Game drawn')
self.info_panel.show(_('Game ended in a draw'))
redraw(self.grid)
return
self.change_turn()
def change_turn(self):
try:
bus_name = self.ordered_bus_names[self.get_active_player()]
buddy = self.tube.get_buddy(
self.tube.bus_name_to_handle[bus_name])
self.buddies_panel.set_is_playing(buddy)
except:
_logger.error('argh!', exc_info=1)
raise
if self.get_active_player() == self.player_id:
_logger.debug('It\'s my turn now')
self.info_panel.show(_('Your turn'))
self.grid.selected_column = 3
self.activity.grab_focus()
else:
_logger.debug('It\'s not my turn')
self.grid.selected_column = None
redraw(self.grid)
def get_active_player(self):
count = {}
for row in self.grid.grid:
for player in row:
if player > -1:
count[player] = count.get(player, 0) + 1
if count.get(0, 0) > count.get(1, 0):
return 1
else:
return 0
def key_press_event(self, widget, event):
if self.grid.selected_column is None:
_logger.debug('Ignoring keypress - not my turn')
return
_logger.debug('Keypress: keyval %s', event.keyval)
if event.keyval in (gtk.keysyms.Left,):
_logger.debug('<--')
if self.grid.selected_column > 0:
self.grid.selected_column -= 1
redraw(self.grid)
elif event.keyval in (gtk.keysyms.Right,):
_logger.debug('-->')
if self.grid.selected_column < 6:
self.grid.selected_column += 1
redraw(self.grid)
elif event.keyval in (gtk.keysyms.Down, gtk.keysyms.space):
_logger.debug('v')
self.insert_requested_cb(self.grid, self.grid.selected_column)
def insert_requested_cb(self, grid, col):
winner = grid.insert(col, self.player_id)
if winner == -1:
return
_logger.debug('Inserting at %d', col)
dump_grid(grid.grid)
redraw(grid)
self.Insert(col)
self.change_turn()
if winner is not None:
_logger.debug("I win")
self.info_panel.show(_('You win!'))
else:
self.info_panel.show(_('Other player\'s turn'))
if self.grid.is_full():
_logger.debug('Game drawn')
self.info_panel.show(_('Game ended in a draw'))
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