1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#Copyright (c) 2009-11 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 pygtk
pygtk.require('2.0')
import gtk
from gettext import gettext as _
try:
from sugar.graphics import style
GRID_CELL_SIZE = style.GRID_CELL_SIZE
except:
GRID_CELL_SIZE = 0
from grid import Grid
from sprites import Sprites
from math import sqrt
CARD_DIM = 135
#
# handle launch from both within and without of Sugar environment
#
class Game():
def __init__(self, canvas, path, parent=None):
self.activity = parent
self.path = path
# starting from command line
# we have to do all the work that was done in CardSortActivity.py
if parent is None:
self.sugar = False
self.canvas = canvas
# starting from Sugar
else:
self.sugar = True
self.canvas = canvas
parent.show_all()
self.canvas.set_flags(gtk.CAN_FOCUS)
self.canvas.add_events(gtk.gdk.BUTTON_PRESS_MASK)
self.canvas.add_events(gtk.gdk.BUTTON_RELEASE_MASK)
self.canvas.connect("expose-event", self._expose_cb)
self.canvas.connect("button-press-event", self._button_press_cb)
self.canvas.connect("button-release-event", self._button_release_cb)
self.width = gtk.gdk.screen_width()
self.height = gtk.gdk.screen_height()-GRID_CELL_SIZE
self.card_dim = CARD_DIM
self.scale = 0.8 * self.height / (self.card_dim * 3)
# Initialize the sprite repository
self.sprites = Sprites(self.canvas)
# Initialize the grid
self.grid = Grid(self)
# Start solving the puzzle
self.press = -1
self.release = -1
self.start_drag = [0, 0]
#
# Button press
#
def _button_press_cb(self, win, event):
win.grab_focus()
x, y = map(int, event.get_coords())
self.start_drag = [x, y]
self.grid.hide_masks()
spr = self.sprites.find_sprite((x,y))
if spr is None:
self.press = -1
self.release = -1
return True
# take note of card under button press
self.press = int(spr.labels[0])
return True
#
# Button release
#
def _button_release_cb(self, win, event):
win.grab_focus()
self.grid.hide_masks()
x, y = map(int, event.get_coords())
spr = self.sprites.find_sprite((x, y))
if spr is None:
self.press = -1
self.release = -1
return True
# take note of card under button release
self.release = int(spr.labels[0])
# if the same card (click) then rotate
if self.press == self.release:
# check to see if it was an aborted move
if self.distance(self.start_drag, [x, y]) < 20:
self.grid.card_table[self.press].rotate_ccw()
# self.grid.card_table[self.press].print_card()
# if different card (drag) then swap
else:
self.grid.swap(self.press,self.release)
# self.grid.print_grid()
self.press = -1
self.release = -1
if self.test() == True:
if self.sugar is True:
self.activity.results_label.set_text(
_("You solved the puzzle."))
self.activity.results_label.show()
else:
self.win.set_title(_("CardSort") + ": " + \
_("You solved the puzzle."))
else:
if self.sugar is True:
self.activity.results_label.set_text(_("Keep trying."))
self.activity.results_label.show()
else:
self.win.set_title(_("CardSort") + ": " + _("Keep trying."))
return True
#
# Measure length of drag between button press and button release
#
def distance(self, start, stop):
dx = start[0] - stop[0]
dy = start[1] - stop[1]
return sqrt(dx * dx + dy * dy)
#
# Repaint
#
def _expose_cb(self, win, event):
''' Callback to handle window expose events '''
self.do_expose_event(event)
return True
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)
#
# callbacks
#
def _destroy_cb(self, win, event):
gtk.main_quit()
|
