diff options
Diffstat (limited to 'game.py')
| -rw-r--r-- | game.py | 285 |
1 files changed, 285 insertions, 0 deletions
@@ -0,0 +1,285 @@ +# -*- coding: utf-8 -*- +#Copyright (c) 2011 Walter Bender + +# 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 3 of the License, or +# (at your option) any later version. +# +# You should have received a copy of the GNU General Public License +# along with this library; if not, write to the Free Software +# Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA + + +import gtk +import cairo +import gobject + +from math import sqrt +from random import uniform + +from gettext import gettext as _ + +import logging +_logger = logging.getLogger('reflection-activity') + +try: + from sugar.graphics import style + GRID_CELL_SIZE = style.GRID_CELL_SIZE +except ImportError: + GRID_CELL_SIZE = 0 + +from sprites import Sprites, Sprite + +# Grid dimensions must be even +MAX = 7 +WHITE = 2 +DOT_SIZE = 80 + + +class Game(): + + def __init__(self, canvas, parent=None, colors=['#A0FFA0', '#FF8080']): + self._activity = parent + self._colors = [colors[0]] + self._colors.append(colors[1]) + self._colors.append('#D0D0D0') + self._colors.append('#000000') + + self._canvas = canvas + if parent is not None: + parent.show_all() + self._parent = parent + + self._canvas.set_flags(gtk.CAN_FOCUS) + self._canvas.add_events(gtk.gdk.BUTTON_PRESS_MASK) + self._canvas.connect("expose-event", self._expose_cb) + self._canvas.connect("button-press-event", self._button_press_cb) + + self._width = gtk.gdk.screen_width() + self._height = gtk.gdk.screen_height() - (GRID_CELL_SIZE * 1.5) + self._scale = self._width / (10 * DOT_SIZE * 1.2) + self._dot_size = int(DOT_SIZE * self._scale) + self._space = int(self._dot_size / 5.) + self.we_are_sharing = False + self.edge = 4 + + # Generate the sprites we'll need... + self._sprites = Sprites(self._canvas) + self._dots = [] + self._generate_grid() + + def _generate_grid(self): + ''' Make a new set of dots for a grid of size edge ''' + i = 0 + for y in range(self.edge): + for x in range(self.edge): + xoffset = int((self._width - self.edge * self._dot_size - \ + (self.edge - 1) * self._space) / 2.) + if i < len(self._dots): + self._dots[i].move( + (xoffset + x * (self._dot_size + self._space), + y * (self._dot_size + self._space))) + else: + self._dots.append( + Sprite(self._sprites, + xoffset + x * (self._dot_size + self._space), + y * (self._dot_size + self._space), + self._new_dot(self._colors[0]))) + self._dots[i].type = 0 + i += 1 + + # and initialize a few variables we'll need. + self._all_clear() + + def _all_clear(self): + ''' Things to reinitialize when starting up a new game. ''' + self._press = None + self.saw_game_over = False + + # Clear dots + for dot in self._dots: + dot.type = 0 + dot.set_shape(self._new_dot(self._colors[0])) + + def _initiating(self): + return self._activity.initiating + + def more_dots(self): + ''' Enlarge the grid ''' + if self.edge < MAX: + self.edge += 1 + self._generate_grid() + self.new_game() + + def new_game(self): + ''' Start a new game. ''' + + self._all_clear() + + # Fill in a few dots to start + for i in range(MAX): + self._flip_them(int(uniform(0, self.edge * self.edge))) + + if self.we_are_sharing: + _logger.debug('sending a new game') + self._parent.send_new_game() + + def restore_game(self, dot_list): + ''' Restore a game from the Journal or share ''' + edge = int(sqrt(len(dot_list))) + if edge > MAX: + edge = MAX + while self.edge < edge: + self.more_dots() + for i, dot in enumerate(dot_list): + self._dots[i].type = dot + self._dots[i].set_shape(self._new_dot( + self._colors[self._dots[i].type])) + + def save_game(self): + ''' Return dot list for saving to Journal or + sharing ''' + dot_list = [] + for dot in self._dots: + dot_list.append(dot.type) + return dot_list + + def _set_label(self, string): + ''' Set the label in the toolbar or the window frame. ''' + self._activity.status.set_label(string) + + def _button_press_cb(self, win, event): + win.grab_focus() + x, y = map(int, event.get_coords()) + + spr = self._sprites.find_sprite((x, y), inverse=True) + if spr == None: + return + + if spr.type is not None: + self._flip_them(self._dots.index(spr)) + self._test_game_over() + + if self.we_are_sharing: + _logger.debug('sending a click to the share') + self._parent.send_dot_click(self._dots.index(spr)) + return True + + def _flip_them(self, dot): + ''' flip the dot and its neighbors ''' + x, y = self._dot_to_grid(dot) + self._flip(self._dots[dot]) + if x > 0: + self._flip(self._dots[dot - 1]) + if y > 0: + self._flip(self._dots[dot - self.edge]) + if x < self.edge - 1: + self._flip(self._dots[dot + 1]) + if y < self.edge - 1: + self._flip(self._dots[dot + self.edge]) + + def _flip(self, spr): + ''' flip a dot ''' + spr.type += 1 + spr.type %= 2 + spr.set_shape(self._new_dot(self._colors[spr.type])) + + def remote_button_press(self, dot): + ''' Receive a button press from a sharer ''' + self._flip_them(dot) + self._test_game_over() + + def set_sharing(self, share=True): + _logger.debug('enabling sharing') + self.we_are_sharing = share + + def _test_game_over(self): + ''' Check to see if game is over: all dots the same color ''' + match = self._dots[0].type + for y in range(self.edge): + for x in range(self.edge): + if self._dots[y * self.edge + x].type != match: + self._set_label(_('keep trying')) + return False + self._set_label(_('good work')) + gobject.timeout_add(2000, self.more_dots) + return True + + def _grid_to_dot(self, pos): + ''' calculate the dot index from a column and row in the grid ''' + return pos[0] + pos[1] * self.edge + + def _dot_to_grid(self, dot): + ''' calculate the grid column and row for a dot ''' + return [dot % self.edge, int(dot / self.edge)] + + def game_over(self, msg=_('Game over')): + ''' Nothing left to do except show the results. ''' + self._set_label(msg) + self.saw_game_over = True + + def _expose_cb(self, win, event): + self.do_expose_event(event) + + def do_expose_event(self, event): + ''' Handle the expose-event by drawing ''' + # Restrict Cairo to the exposed area + cr = self._canvas.window.cairo_create() + cr.rectangle(event.area.x, event.area.y, + event.area.width, event.area.height) + cr.clip() + # Refresh sprite list + self._sprites.redraw_sprites(cr=cr) + + def _destroy_cb(self, win, event): + gtk.main_quit() + + def _new_dot(self, color): + ''' generate a dot of a color color ''' + self._dot_cache = {} + if not color in self._dot_cache: + self._stroke = color + self._fill = color + self._svg_width = self._dot_size + self._svg_height = self._dot_size + pixbuf = svg_str_to_pixbuf( + self._header() + \ + self._circle(self._dot_size / 2., self._dot_size / 2., + self._dot_size / 2.) + \ + self._footer()) + + surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, + self._svg_width, self._svg_height) + context = cairo.Context(surface) + context = gtk.gdk.CairoContext(context) + context.set_source_pixbuf(pixbuf, 0, 0) + context.rectangle(0, 0, self._svg_width, self._svg_height) + context.fill() + self._dot_cache[color] = surface + + return self._dot_cache[color] + + def _header(self): + return '<svg\n' + 'xmlns:svg="http://www.w3.org/2000/svg"\n' + \ + 'xmlns="http://www.w3.org/2000/svg"\n' + \ + 'xmlns:xlink="http://www.w3.org/1999/xlink"\n' + \ + 'version="1.1"\n' + 'width="' + str(self._svg_width) + '"\n' + \ + 'height="' + str(self._svg_height) + '">\n' + + def _circle(self, r, cx, cy): + return '<circle style="fill:' + str(self._fill) + ';stroke:' + \ + str(self._stroke) + ';" r="' + str(r - 0.5) + '" cx="' + \ + str(cx) + '" cy="' + str(cy) + '" />\n' + + def _footer(self): + return '</svg>\n' + + +def svg_str_to_pixbuf(svg_string): + """ Load pixbuf from SVG string """ + pl = gtk.gdk.PixbufLoader('svg') + pl.write(svg_string) + pl.close() + pixbuf = pl.get_pixbuf() + return pixbuf |