Mercurial > rinkhals

annotate gamelib/savegame.py @ 536:1a224ba50edf

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Correctly set the position of newly hatched chickens in buildings
author Neil Muller <drnlmuller@gmail.com>
date Fri, 27 Nov 2009 23:29:32 +0000
parents b112bcf4d435
children 882b582da618
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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 import gameboard
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16 import serializer
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17
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18 TIMESTAMP_FORMAT = "%Y-%m-%dT%H:%M:%S"
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19
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20 def read_savegame(fullpath):
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21 """Open a save game file."""
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22 try:
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23 xml = zlib.decompress(open(fullpath, "rb").read())
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24 params, methodname = xmlrpclib.loads(xml)
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25 if methodname != "foxassault":
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26 raise SaveGameError("File does not appear to be a "
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27 "Fox Assault save game.")
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28 save_version = params[0]
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29 if save_version != version.SAVE_GAME_VERSION:
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30 raise SaveGameError("Incompatible save game version.")
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31
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32 data = params[1]
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33
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34 try:
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35 snapshot = decode_snapshot(params[2])
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36 except Exception, e:
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37 snapshot = None
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38
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39 try:
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40 level_name = params[3]
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41 except Exception, e:
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42 level_name = None
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43
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44 try:
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45 timestamp = datetime.datetime.strptime(params[4], TIMESTAMP_FORMAT)
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46 except Exception, e:
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47 timestamp = None
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48
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49 except Exception, e:
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50 raise SaveGameError("Failed to load game: %s" % (e,))
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51
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52 return data, snapshot, level_name, timestamp
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53
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54 def write_savegame(fullpath, data, snapshot, level_name, timestamp):
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55 """Write a save game file."""
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56 try:
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57 snapshot_data = encode_snapshot(snapshot)
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58 timestamp_str = timestamp.strftime(TIMESTAMP_FORMAT)
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59 params = (version.SAVE_GAME_VERSION, data, snapshot_data, level_name, timestamp_str)
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60 xml = xmlrpclib.dumps(params, "foxassault")
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61 open(fullpath, "wb").write(zlib.compress(xml))
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62 except Exception, e:
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63 raise SaveGameError("Failed to save game: %s" % (e,))
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64
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65 def encode_snapshot(snapshot):
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66 """Encode a snapshot."""
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67 snapshot_file = StringIO.StringIO()
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68 pygame.image.save(snapshot, snapshot_file)
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69 data = snapshot_file.getvalue()
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70 data = base64.standard_b64encode(data)
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71 return data
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72
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73 def decode_snapshot(data):
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74 """Decode a snapshot."""
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75 data = base64.standard_b64decode(data)
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76 snapshot_file = StringIO.StringIO(data)
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77 snapshot = pygame.image.load(snapshot_file, "snapshot.tga")
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78 return snapshot
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79
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80
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81 class SaveGameError(Exception):
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82 pass
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83
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84
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85 class BaseSaveRestoreDialog(gui.Dialog):
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86 """Save game dialog."""
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87
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88 TIMESTAMP_DISPLAY = "%H:%M, %d %b %Y"
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89
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90 def __init__(self, title_txt, button_txt, allow_new, cls="dialog"):
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91 self.value = None
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92 self.save_folder = config.config.save_folder
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93
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94 self.save_games = {}
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95 self._populate_save_games()
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96
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97 if allow_new:
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98 self.name_input = gui.Input()
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99 else:
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100 self.name_input = None
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101
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102 td_style = {
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103 'padding_left': 4,
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104 'padding_right': 4,
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105 'padding_top': 2,
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106 'padding_bottom': 2,
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107 }
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108
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109 self.save_list = gui.List(width=350, height=250)
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110 games = self.save_games.keys()
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111 games.sort()
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112 for name in games:
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113 self.save_list.add(name, value=name)
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114 self.save_list.set_vertical_scroll(0)
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115 self.save_list.connect(gui.CHANGE, self._save_list_change)
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116
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117 self.image_container = gui.Container()
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118
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119 button_ok = gui.Button(button_txt)
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120 button_ok.connect(gui.CLICK, self._click_ok)
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121
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122 button_cancel = gui.Button("Cancel")
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123 button_cancel.connect(gui.CLICK, self._click_cancel)
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124
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125 body = gui.Table()
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126 body.tr()
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diff changeset
127 body.td(self.save_list, style=td_style, colspan=2)
491
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diff changeset
128 body.td(self.image_container, style=td_style, colspan=2)
486
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diff changeset
129 body.tr()
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130 if self.name_input:
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diff changeset
131 body.td(gui.Label("Save as:"), style=td_style, align=1)
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132 body.td(self.name_input, style=td_style)
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133 else:
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diff changeset
134 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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diff changeset
135 body.td(button_ok, style=td_style, align=1)
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diff changeset
136 body.td(button_cancel, style=td_style, align=1)
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diff changeset
137
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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138 title = gui.Label(title_txt, cls=cls + ".title.label")
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diff changeset
139 gui.Dialog.__init__(self, title, body)
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140
510
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
141 if games:
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
142 self.save_list.group.value = games[0]
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parents: 509
diff changeset
143
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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144 def get_fullpath(self):
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145 """Return the fullpath of the select save game file or None."""
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146 if self.value is None:
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147 return None
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148 return os.path.join(self.save_folder, self.value + ".xml")
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149
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150 def _populate_save_games(self):
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151 """Read list of save games."""
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152 for filename in os.listdir(self.save_folder):
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153 fullpath = os.path.join(self.save_folder, filename)
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154 root, ext = os.path.splitext(filename)
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155 if not os.path.isfile(fullpath):
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156 continue
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157 if ext != ".xml":
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diff changeset
158 continue
510
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
159 self.save_games[root] = (fullpath, None)
491
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
160
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
161 def _create_image_widget(self, fullpath):
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
162 """Create an image showing the contents of a save game file."""
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
163 try:
509
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
164 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
165 except SaveGameError:
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
166 return gui.Label("Bad Save Game")
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diff changeset
167
509
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
168 tbl = gui.Table()
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
169
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
170 tbl.tr()
491
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parents: 486
diff changeset
171 if screenshot is None:
509
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
172 tbl.td(gui.Label("No screenshot"))
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
173 else:
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diff changeset
174 tbl.td(gui.Image(screenshot))
491
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
175
509
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
176 tbl.tr()
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
177 if level_name is None:
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
178 tbl.td(gui.Label("Level: ???"))
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
179 else:
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parents: 499
diff changeset
180 tbl.td(gui.Label("Level: %s" % (level_name,)))
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
181
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parents: 499
diff changeset
182 if timestamp is not None:
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parents: 499
diff changeset
183 tbl.tr()
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
184 tbl.td(gui.Label(timestamp.strftime(self.TIMESTAMP_DISPLAY)))
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
185
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
186 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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187
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188 def _save_list_change(self):
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189 if self.name_input:
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190 self.name_input.value = self.save_list.value
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diff changeset
191
491
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parents: 486
diff changeset
192 for w in self.image_container.widgets:
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diff changeset
193 self.image_container.remove(w)
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diff changeset
194
510
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
195 name = self.save_list.value
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parents: 509
diff changeset
196 fullpath, widget = self.save_games[name]
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
197 if widget is None:
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
198 widget = self._create_image_widget(fullpath)
3e4bb2c9556c Lazy loading of save game snapshots.
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diff changeset
199 self.save_games[name] = (fullpath, widget)
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
200
3e4bb2c9556c Lazy loading of save game snapshots.
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parents: 509
diff changeset
201 self.image_container.add(widget, 0, 0)
491
75ef6ea3b7a6 Start of support for save game snapshots.
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diff changeset
202
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
203 def _click_ok(self):
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diff changeset
204 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
205 self.value = self.name_input.value
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parents:
diff changeset
206 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
207 self.value = self.save_list.value
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parents:
diff changeset
208 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
209 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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diff changeset
210 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
211
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 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
213 self.value = None
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parents:
diff changeset
214 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
215 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
216
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
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
218 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
219 """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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diff changeset
220
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
221 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
222 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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parents:
diff changeset
223 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
224
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
225 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
226 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
227 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.
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parents:
diff changeset
228 return
496
bf90a2948e34 Basic snapshot support in save games added.
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parents: 491
diff changeset
229
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
230 data = gameboard.save_game()
496
bf90a2948e34 Basic snapshot support in save games added.
Simon Cross <hodgestar@gmail.com>
parents: 491
diff changeset
231 snapshot = gameboard.snapshot()
509
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
232 level_name = gameboard.level.level_name
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
233 timestamp = datetime.datetime.now()
496
bf90a2948e34 Basic snapshot support in save games added.
Simon Cross <hodgestar@gmail.com>
parents: 491
diff changeset
234
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
235 try:
509
77a3f7f1c856 Add level name and timestamp to save games.
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parents: 499
diff changeset
236 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
237 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.
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parents:
diff changeset
238 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
239
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
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
241 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.
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parents:
diff changeset
242 """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
243
512
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
244 def __init__(self, restore_func):
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
245 BaseSaveRestoreDialog.__init__(self, "Load Game ...", "Load", allow_new=False)
512
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
246 self.connect(gui.CHANGE, self._restore, restore_func)
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
247
512
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
248 def _restore(self, restore_func):
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:
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249 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:
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250 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.
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parents:
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251 return
491
75ef6ea3b7a6 Start of support for save game snapshots.
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parents: 486
diff changeset
252
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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253 try:
509
77a3f7f1c856 Add level name and timestamp to save games.
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diff changeset
254 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.
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parents:
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255 except Exception, e:
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256 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.
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parents:
diff changeset
257 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:
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258
512
b112bcf4d435 Add restore game button to main menu.
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parents: 510
diff changeset
259 if 'refid' not in data or 'class' not in data or data['class'] != gameboard.GameBoard.__name__:
b112bcf4d435 Add restore game button to main menu.
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parents: 510
diff changeset
260 print "Failed to load game: Invalid game data."
b112bcf4d435 Add restore game button to main menu.
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parents: 510
diff changeset
261 return
b112bcf4d435 Add restore game button to main menu.
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parents: 510
diff changeset
262
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
263 try:
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
264 new_gameboard = serializer.unsimplify(data)
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
265 except Exception, e:
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
266 print "Failed to load game: %s" % (e,)
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
267 return
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
268
b112bcf4d435 Add restore game button to main menu.
Simon Cross <hodgestar@gmail.com>
parents: 510
diff changeset
269 restore_func(new_gameboard)