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# -*- 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 gobject
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
TEN = 10
SIX = 6
DOT_SIZE = 40
class Game():
def __init__(self, canvas, parent=None, colors=['#A0FFA0', '#FF8080']):
self._activity = parent
self._colors = ['#FFFFFF']
self._colors.append(colors[0])
self._colors.append(colors[1])
self._colors.append('#000000')
self._canvas = canvas
parent.show_all()
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._orientation = 'horizontal'
# Generate the sprites we'll need...
self._sprites = Sprites(self._canvas)
self._dots = []
for y in range(SIX):
for x in range(TEN):
xoffset = int((self._width - TEN * self._dot_size - \
(TEN - 1) * self._space) / 2.)
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[-1].type = 0 # not set
self.vline = Sprite(self._sprites,
int(self._width / 2.) - 1,
0, self._line(vertical=True))
n = SIX / 2.
self.hline = Sprite(
self._sprites, 0,
int(self._dot_size * n + self._space * (n - 0.5)) - 1,
self._line(vertical=False))
self.hline.hide()
# 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
if self._orientation == 'horizontal':
self.hline.hide()
self.vline.set_layer(1000)
elif self._orientation == 'vertical':
self.hline.set_layer(1000)
self.vline.hide()
else:
self.hline.set_layer(1000)
self.vline.set_layer(1000)
# Clear dots
for dot in self._dots:
if dot.type > 0:
dot.type = 0
dot.set_shape(self._new_dot(self._colors[0]))
if self._orientation == 'horizontal':
self._set_label(
_('Click on the dots to make a horizontal reflection.'))
elif self._orientation == 'vertical':
self._set_label(
_('Click on the dots to make a vertical reflection.'))
else:
self._set_label(
_('Click on the dots to make a bilateral reflection.'))
def _initiating(self):
return self._activity.initiating
def new_game(self, orientation='horizontal'):
''' Start a new game. '''
self._orientation = orientation
self._all_clear()
# Fill in a few dots to start
for i in range(25):
n = int(uniform(0, TEN * SIX))
self._dots[n].type = int(uniform(0, 4))
self._dots[n].set_shape(self._new_dot(
self._colors[self._dots[n].type]))
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:
spr.type += 1
spr.type %= 4
spr.set_shape(self._new_dot(self._colors[spr.type]))
self._test_game_over()
return True
def _test_game_over(self):
''' Check to see if game is over '''
if self._orientation == 'horizontal':
for y in range(SIX):
for x in range(SIX):
if self._dots[y * TEN + x].type != \
self._dots[y * TEN + TEN - x - 1].type:
self._set_label(_('keep trying'))
return False
self._set_label(_('good work'))
return True
if self._orientation == 'vertical':
for y in range(int(SIX / 2)):
for x in range(TEN):
if self._dots[y * TEN + x].type != \
self._dots[(SIX - y - 1) * TEN + x].type:
self._set_label(_('keep trying'))
return False
self._set_label(_('good work'))
else:
for y in range(SIX):
for x in range(SIX):
if self._dots[y * TEN + x].type != \
self._dots[y * TEN + TEN - x - 1].type:
self._set_label(_('keep trying'))
return False
for y in range(int(SIX / 2)):
for x in range(TEN):
if self._dots[y * TEN + x].type != \
self._dots[(SIX - y - 1) * TEN + x].type:
self._set_label(_('keep trying'))
return False
self._set_label(_('good work'))
def _grid_to_dot(self, pos):
''' calculate the dot index from a column and row in the grid '''
return pos[0] + pos[1] * TEN
def _dot_to_grid(self, dot):
''' calculate the grid column and row for a dot '''
return [dot % TEN, int(dot / SIX)]
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._stroke = color
self._fill = color
self._svg_width = self._dot_size
self._svg_height = self._dot_size
return svg_str_to_pixbuf(
self._header() + \
self._circle(self._dot_size / 2., self._dot_size / 2.,
self._dot_size / 2.) + \
self._footer())
def _line(self, vertical=True):
''' Generate a center line '''
if vertical:
self._svg_width = 3
self._svg_height = self._height
_logger.debug(
self._header() + \
self._rect(3, self._height, 0, 0) + \
self._footer())
return svg_str_to_pixbuf(
self._header() + \
self._rect(3, self._height, 0, 0) + \
self._footer())
else:
self._svg_width = self._width
self._svg_height = 3
return svg_str_to_pixbuf(
self._header() + \
self._rect(self._width, 3, 0, 0) + \
self._footer())
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 _rect(self, w, h, x, y):
svg_string = ' <rect\n'
svg_string += ' width="%f"\n' % (w)
svg_string += ' height="%f"\n' % (h)
svg_string += ' rx="%f"\n' % (0)
svg_string += ' ry="%f"\n' % (0)
svg_string += ' x="%f"\n' % (x)
svg_string += ' y="%f"\n' % (y)
svg_string += 'style="fill:#000000;stroke:#000000;"/>\n'
return svg_string
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
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