Mercurial > pyntnclick

annotate pyntnclick/main.py @ 750:ef4bda7d623d pyntnclick

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Better state and inventory management.
author Jeremy Thurgood <firxen@gmail.com>
date Sun, 20 Jan 2013 20:20:36 +0200
parents a453731e4531
children f4853f817a7a
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1 '''Game main module.
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2
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3 Contains the entry point used by the run_game.py script.
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4
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5 '''
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6 import sys
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7 from optparse import OptionParser
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8
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9 import pygame
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10 from pygame.locals import SWSURFACE
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11
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12 from pyntnclick.engine import Engine
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13 from pyntnclick.gamescreen import DefMenuScreen, DefEndScreen, GameScreen
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14 from pyntnclick.constants import GameConstants, DEBUG_ENVVAR
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15 from pyntnclick.resources import Resources
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16 from pyntnclick.sound import Sound
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17 from pyntnclick import state
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18
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19 from pyntnclick.tools.rect_drawer import (RectEngine, RectDrawerError,
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20 make_rect_display)
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21 from pyntnclick.tools.utils import list_scenes
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22
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23
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24 class GameDescriptionError(Exception):
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25 """Raised when an GameDescription is invalid."""
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26
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27
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28 class GameDescription(object):
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29
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30 # initial scene for start of game (unless overridden by debug)
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31 INITIAL_SCENE = None
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32
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33 # list of game scenes
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34 SCENE_LIST = None
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35
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36 # starting menu
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37 SCREENS = {
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38 'menu': DefMenuScreen,
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39 'end': DefEndScreen,
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40 }
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41
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42 START_SCREEN = 'menu'
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43
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44 # Modules
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45 RESOURCE_MODULE = 'data'
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46 SCENE_MODULE = 'gamelib.scenes'
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47
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48 def __init__(self):
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49 if self.INITIAL_SCENE is None:
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50 raise GameDescriptionError("A game must have an initial scene.")
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51 if not self.SCENE_LIST:
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52 raise GameDescriptionError("A game must have a non-empty list"
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53 " of scenes.")
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54 if 'game' in self.SCREENS:
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55 raise GameDescriptionError("The 'game' screen is reserved for the"
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56 " game itself.")
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57 self._initial_scene = self.INITIAL_SCENE
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58 self._scene_list = self.SCENE_LIST
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59 self._resource_module = self.RESOURCE_MODULE
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60 self._debug_rects = False
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61 self._screens = self.SCREENS.copy()
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62 self._screens['game'] = GameScreen
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63 self.resource = Resources(self._resource_module)
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64 self.sound = Sound(self.resource)
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65 self.constants = self.game_constants()
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66 self.debug_options = []
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67 self.running = False
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68
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69 def initial_state(self):
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70 """Create a copy of the initial game state."""
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71 initial_state = state.Game(self)
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72 initial_state.set_debug_rects(self._debug_rects)
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73 for scene in self._scene_list:
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74 initial_state.load_scenes(scene)
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75 initial_state.change_scene(self._initial_scene)
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76 return initial_state
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77
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78 def game_state(self):
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79 return state.GameState()
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80
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81 def game_constants(self):
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82 return GameConstants()
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83
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84 def option_parser(self):
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85 parser = OptionParser()
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86 parser.add_option("--no-sound", action="store_false", default=True,
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87 dest="sound", help="disable sound")
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88 # We flag these, so we can warn the user that these require debug mode
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89 self.debug_options = ['--scene', '--no-rects', '--rect-drawer',
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90 '--list-scenes', '--details']
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91 if self.constants.debug:
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92 parser.add_option("--scene", type="str", default=None,
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93 dest="scene", help="initial scene")
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94 parser.add_option("--no-rects", action="store_false", default=True,
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95 dest="rects", help="disable debugging rects")
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96 parser.add_option("--rect-drawer", action="store_true",
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97 default=False, dest="rect_drawer",
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98 help="Launch the rect drawing helper tool. Specify the"
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99 " scene with --scene")
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100 parser.add_option("--list-scenes", action="store_true",
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101 default=False, dest='list_scenes', help="List all scenes"
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102 " that can be used with --scene and exit.")
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103 parser.add_option("--detail", type="str", default=None,
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104 dest="detail", help="Detailed view for rect_drawer")
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105 return parser
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106
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107 def warn_debug(self, option):
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108 """Warn the user that he needs debug mode"""
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109 print '%s is only valid in debug mode' % option
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110 print 'set %s to enable debug mode' % DEBUG_ENVVAR
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111 print
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112
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113 def main(self):
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114 parser = self.option_parser()
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115 # This is a bit hack'ish, but works
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116 if not self.constants.debug:
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117 for option in self.debug_options:
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118 if option in sys.argv:
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119 self.warn_debug(option)
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120 opts, _ = parser.parse_args(sys.argv)
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121 pygame.display.init()
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122 pygame.font.init()
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123 if opts.sound:
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124 self.sound.enable_sound(self.constants)
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125 else:
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126 self.sound.disable_sound()
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127 if self.constants.debug:
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128 if opts.scene is not None:
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129 # debug the specified scene
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130 self._initial_scene = opts.scene
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131 self._debug_rects = opts.rects
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132 if self.constants.debug and opts.list_scenes:
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133 # FIXME: Horrible hack to avoid image loading issues for
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134 # now
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135 pygame.display.set_mode(self.constants.screen,
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136 SWSURFACE)
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137 list_scenes(self.initial_state)
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138 sys.exit(0)
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parents: 589
diff changeset
139 if self.constants.debug and opts.rect_drawer:
589
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
140 if opts.scene is None:
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
141 print 'Need to supply a scene to use the rect drawer'
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
142 sys.exit(1)
661
5dc866e1d71d Misc pep8 and pyflakes fixes
Neil Muller <neil@dip.sun.ac.za>
parents: 655
diff changeset
143 make_rect_display()
589
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
144 try:
691
60bf20849231 Fix detail loading in rect_drawer. Improve error reporting when loading fails
Neil Muller <neil@dip.sun.ac.za>
parents: 673
diff changeset
145 self.engine = RectEngine(self, opts.detail)
60bf20849231 Fix detail loading in rect_drawer. Improve error reporting when loading fails
Neil Muller <neil@dip.sun.ac.za>
parents: 673
diff changeset
146 except RectDrawerError, e:
60bf20849231 Fix detail loading in rect_drawer. Improve error reporting when loading fails
Neil Muller <neil@dip.sun.ac.za>
parents: 673
diff changeset
147 print 'RectDrawer failed with: %s' % e
589
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
148 sys.exit(1)
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
149 else:
600
fabce47e542f Stop using albow (at least for the menu). Breaks the world. Please fix it, kthx
Stefano Rivera <stefano@rivera.za.net>
parents: 599
diff changeset
150 pygame.display.set_mode(self.constants.screen, SWSURFACE)
732
4f34b36ee7c5 Add constants subclass to gamelib, and get the title + icon from it
Stefano Rivera <stefano@rivera.za.net>
parents: 692
diff changeset
151 if self.constants.icon:
4f34b36ee7c5 Add constants subclass to gamelib, and get the title + icon from it
Stefano Rivera <stefano@rivera.za.net>
parents: 692
diff changeset
152 pygame.display.set_icon(self.resource.get_image(
4f34b36ee7c5 Add constants subclass to gamelib, and get the title + icon from it
Stefano Rivera <stefano@rivera.za.net>
parents: 692
diff changeset
153 self.constants.icon, basedir='icons'))
4f34b36ee7c5 Add constants subclass to gamelib, and get the title + icon from it
Stefano Rivera <stefano@rivera.za.net>
parents: 692
diff changeset
154 if self.constants.title:
4f34b36ee7c5 Add constants subclass to gamelib, and get the title + icon from it
Stefano Rivera <stefano@rivera.za.net>
parents: 692
diff changeset
155 pygame.display.set_caption(self.constants.title)
589
ebc48b397fd5 Turn rect_drawer into a command line option
Neil Muller <neil@dip.sun.ac.za>
parents: 587
diff changeset
156
608
a25cd1c6335a Pass screens through engine by name
Neil Muller <neil@dip.sun.ac.za>
parents: 603
diff changeset
157 self.engine = Engine(self)
a25cd1c6335a Pass screens through engine by name
Neil Muller <neil@dip.sun.ac.za>
parents: 603
diff changeset
158 # Initialize the special screens in the engine
614
974cc69d3762 Special cases aren't special enough to be named special.
Simon Cross <hodgestar+bzr@gmail.com>
parents: 613
diff changeset
159 for name, cls in self._screens.iteritems():
608
a25cd1c6335a Pass screens through engine by name
Neil Muller <neil@dip.sun.ac.za>
parents: 603
diff changeset
160 screen = cls(self)
a25cd1c6335a Pass screens through engine by name
Neil Muller <neil@dip.sun.ac.za>
parents: 603
diff changeset
161 self.engine.add_screen(name, screen)
600
fabce47e542f Stop using albow (at least for the menu). Breaks the world. Please fix it, kthx
Stefano Rivera <stefano@rivera.za.net>
parents: 599
diff changeset
162 # Should we allow the menu not to be the opening screen?
608
a25cd1c6335a Pass screens through engine by name
Neil Muller <neil@dip.sun.ac.za>
parents: 603
diff changeset
163 self.engine.set_screen(self.START_SCREEN)
107
5213b45fcc7e Initial event sound support
Neil Muller <neil@dip.sun.ac.za>
parents: 105
diff changeset
164 try:
608
a25cd1c6335a Pass screens through engine by name
Neil Muller <neil@dip.sun.ac.za>
parents: 603
diff changeset
165 self.engine.run()
554
99a1420097df Create GameDescription object.
Simon Cross <hodgestar+bzr@gmail.com>
parents: 553
diff changeset
166 except KeyboardInterrupt:
99a1420097df Create GameDescription object.
Simon Cross <hodgestar+bzr@gmail.com>
parents: 553
diff changeset
167 pass