Mercurial > rinkhals

annotate gamelib/savegame.py @ 509:77a3f7f1c856

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Add level name and timestamp to save games.
author Simon Cross <hodgestar@gmail.com>
date Thu, 26 Nov 2009 23:02:10 +0000
parents c2a4e3a24e9a
children 3e4bb2c9556c
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1 """Utilities and widgets for saving and restoring games."""
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2
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3 import xmlrpclib
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4 import os
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5 import StringIO
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6 import base64
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7 import zlib
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8 import datetime
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9
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10 from pgu import gui
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11 import pygame
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12
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13 import config
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14 import version
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15
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16 TIMESTAMP_FORMAT = "%Y-%m-%dT%H:%M:%S"
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17
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18 def read_savegame(fullpath):
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19 """Open a save game file."""
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20 try:
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21 xml = zlib.decompress(open(fullpath, "rb").read())
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22 params, methodname = xmlrpclib.loads(xml)
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23 if methodname != "foxassault":
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24 raise SaveGameError("File does not appear to be a "
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25 "Fox Assault save game.")
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26 save_version = params[0]
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27 if save_version != version.SAVE_GAME_VERSION:
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28 raise SaveGameError("Incompatible save game version.")
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29
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30 data = params[1]
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31
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32 try:
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33 snapshot = decode_snapshot(params[2])
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34 except Exception, e:
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35 snapshot = None
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36
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37 try:
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38 level_name = params[3]
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39 except Exception, e:
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40 level_name = None
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41
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42 try:
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43 timestamp = datetime.datetime.strptime(params[4], TIMESTAMP_FORMAT)
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44 except Exception, e:
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45 timestamp = None
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46
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47 except Exception, e:
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48 raise SaveGameError("Failed to load game: %s" % (e,))
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49
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50 return data, snapshot, level_name, timestamp
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51
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52 def write_savegame(fullpath, data, snapshot, level_name, timestamp):
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53 """Write a save game file."""
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54 try:
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55 snapshot_data = encode_snapshot(snapshot)
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56 timestamp_str = timestamp.strftime(TIMESTAMP_FORMAT)
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57 params = (version.SAVE_GAME_VERSION, data, snapshot_data, level_name, timestamp_str)
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58 xml = xmlrpclib.dumps(params, "foxassault")
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59 open(fullpath, "wb").write(zlib.compress(xml))
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60 except Exception, e:
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61 raise SaveGameError("Failed to save game: %s" % (e,))
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62
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63 def encode_snapshot(snapshot):
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64 """Encode a snapshot."""
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65 snapshot_file = StringIO.StringIO()
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66 pygame.image.save(snapshot, snapshot_file)
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67 data = snapshot_file.getvalue()
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68 data = base64.standard_b64encode(data)
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69 return data
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70
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71 def decode_snapshot(data):
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72 """Decode a snapshot."""
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73 data = base64.standard_b64decode(data)
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74 snapshot_file = StringIO.StringIO(data)
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75 snapshot = pygame.image.load(snapshot_file, "snapshot.tga")
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76 return snapshot
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78
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79 class SaveGameError(Exception):
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80 pass
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81
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82
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83 class BaseSaveRestoreDialog(gui.Dialog):
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84 """Save game dialog."""
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85
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86 TIMESTAMP_DISPLAY = "%H:%M, %d %b %Y"
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87
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88 def __init__(self, title_txt, button_txt, allow_new, cls="dialog"):
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89 self.value = None
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90 self.save_folder = config.config.save_folder
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92 self.save_games = {}
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93 self._populate_save_games()
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94
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95 if allow_new:
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96 self.name_input = gui.Input()
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97 else:
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98 self.name_input = None
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99
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100 td_style = {
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101 'padding_left': 4,
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102 'padding_right': 4,
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103 'padding_top': 2,
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104 'padding_bottom': 2,
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105 }
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106
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107 self.save_list = gui.List(width=350, height=250)
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108 games = self.save_games.keys()
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109 games.sort()
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110 for name in games:
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111 self.save_list.add(name, value=name)
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112 self.save_list.set_vertical_scroll(0)
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113 self.save_list.connect(gui.CHANGE, self._save_list_change)
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114
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115 self.image_container = gui.Container()
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116
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117 button_ok = gui.Button(button_txt)
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118 button_ok.connect(gui.CLICK, self._click_ok)
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119
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120 button_cancel = gui.Button("Cancel")
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121 button_cancel.connect(gui.CLICK, self._click_cancel)
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122
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123 body = gui.Table()
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124 body.tr()
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125 body.td(self.save_list, style=td_style, colspan=2)
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126 body.td(self.image_container, style=td_style, colspan=2)
486
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diff changeset
127 body.tr()
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diff changeset
128 if self.name_input:
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129 body.td(gui.Label("Save as:"), style=td_style, align=1)
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parents:
diff changeset
130 body.td(self.name_input, style=td_style)
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131 else:
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parents:
diff changeset
132 body.td(gui.Spacer(0, 0), style=td_style, colspan=2)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
133 body.td(button_ok, style=td_style, align=1)
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parents:
diff changeset
134 body.td(button_cancel, style=td_style, align=1)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
135
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
136 title = gui.Label(title_txt, cls=cls + ".title.label")
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
137 gui.Dialog.__init__(self, title, body)
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diff changeset
138
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
139 def get_fullpath(self):
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diff changeset
140 """Return the fullpath of the select save game file or None."""
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
141 if self.value is None:
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diff changeset
142 return None
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
143 return os.path.join(self.save_folder, self.value + ".xml")
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
144
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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145 def _populate_save_games(self):
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146 """Read list of save games."""
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147 for filename in os.listdir(self.save_folder):
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148 fullpath = os.path.join(self.save_folder, filename)
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diff changeset
149 root, ext = os.path.splitext(filename)
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150 if not os.path.isfile(fullpath):
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parents:
diff changeset
151 continue
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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152 if ext != ".xml":
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diff changeset
153 continue
491
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
154 self.save_games[root] = self._create_image_widget(fullpath)
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diff changeset
155
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
156 def _create_image_widget(self, fullpath):
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diff changeset
157 """Create an image showing the contents of a save game file."""
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parents: 486
diff changeset
158 try:
509
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
159 data, screenshot, level_name, timestamp = read_savegame(fullpath)
491
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
160 except SaveGameError:
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
161 return gui.Label("Bad Save Game")
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
162
509
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
163 tbl = gui.Table()
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
164
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
165 tbl.tr()
491
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
166 if screenshot is None:
509
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
167 tbl.td(gui.Label("No screenshot"))
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
168 else:
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
169 tbl.td(gui.Image(screenshot))
491
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
170
509
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
171 tbl.tr()
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
172 if level_name is None:
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
173 tbl.td(gui.Label("Level: ???"))
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
174 else:
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
175 tbl.td(gui.Label("Level: %s" % (level_name,)))
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
176
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
177 if timestamp is not None:
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
178 tbl.tr()
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
179 tbl.td(gui.Label(timestamp.strftime(self.TIMESTAMP_DISPLAY)))
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parents: 499
diff changeset
180
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
181 return tbl
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
182
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parents:
diff changeset
183 def _save_list_change(self):
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diff changeset
184 if self.name_input:
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parents:
diff changeset
185 self.name_input.value = self.save_list.value
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parents:
diff changeset
186
491
75ef6ea3b7a6 Start of support for save game snapshots.
Simon Cross <hodgestar@gmail.com>
parents: 486
diff changeset
187 for w in self.image_container.widgets:
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Simon Cross <hodgestar@gmail.com>
parents: 486
diff changeset
188 self.image_container.remove(w)
75ef6ea3b7a6 Start of support for save game snapshots.
Simon Cross <hodgestar@gmail.com>
parents: 486
diff changeset
189
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
190 image_widget = self.save_games[self.save_list.value]
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parents: 486
diff changeset
191 self.image_container.add(image_widget, 0, 0)
75ef6ea3b7a6 Start of support for save game snapshots.
Simon Cross <hodgestar@gmail.com>
parents: 486
diff changeset
192
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
193 def _click_ok(self):
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parents:
diff changeset
194 if self.name_input:
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
195 self.value = self.name_input.value
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
196 else:
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
197 self.value = self.save_list.value
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
198 if self.value:
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
199 self.send(gui.CHANGE)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
200 self.close()
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
201
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
202 def _click_cancel(self):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
203 self.value = None
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
204 self.send(gui.CHANGE)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
205 self.close()
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
206
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
207
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
208 class SaveDialog(BaseSaveRestoreDialog):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
209 """Save game dialog."""
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
210
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
211 def __init__(self, gameboard):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
212 BaseSaveRestoreDialog.__init__(self, "Save Game ...", "Save", allow_new=True)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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diff changeset
213 self.connect(gui.CHANGE, self._save, gameboard)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
214
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
215 def _save(self, gameboard):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
216 filename = self.get_fullpath()
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
217 if filename is None:
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
218 return
496
bf90a2948e34 Basic snapshot support in save games added.
Simon Cross <hodgestar@gmail.com>
parents: 491
diff changeset
219
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
220 data = gameboard.save_game()
496
bf90a2948e34 Basic snapshot support in save games added.
Simon Cross <hodgestar@gmail.com>
parents: 491
diff changeset
221 snapshot = gameboard.snapshot()
509
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
222 level_name = gameboard.level.level_name
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
223 timestamp = datetime.datetime.now()
496
bf90a2948e34 Basic snapshot support in save games added.
Simon Cross <hodgestar@gmail.com>
parents: 491
diff changeset
224
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
225 try:
509
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
226 write_savegame(filename, data, snapshot, level_name, timestamp)
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
227 except Exception, e:
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
228 print "Failed to save game: %s" % (e,)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
229
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
230
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
231 class RestoreDialog(BaseSaveRestoreDialog):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
232 """Restore game dialog."""
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
233
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
234 def __init__(self, gameboard):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
235 BaseSaveRestoreDialog.__init__(self, "Load Game ...", "Load", allow_new=False)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
236 self.connect(gui.CHANGE, self._restore, gameboard)
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
237
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
238 def _restore(self, gameboard):
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
239 filename = self.get_fullpath()
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
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parents:
diff changeset
240 if filename is None:
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
241 return
491
75ef6ea3b7a6 Start of support for save game snapshots.
Simon Cross <hodgestar@gmail.com>
parents: 486
diff changeset
242
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
243 try:
509
77a3f7f1c856 Add level name and timestamp to save games.
Simon Cross <hodgestar@gmail.com>
parents: 499
diff changeset
244 data, screenshot, level_name, timestamp = read_savegame(filename)
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
245 except Exception, e:
491
75ef6ea3b7a6 Start of support for save game snapshots.
Simon Cross <hodgestar@gmail.com>
parents: 486
diff changeset
246 print "Failed to load game: %s" % (e,)
486
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
247 return
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
248
8897a436a8cb Factor out save game logic and (new, simplified) dialogs into their own module. Add preferences folder to concept to config. Save games under preferences folder.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
249 gameboard.restore_game(data)