6 from parser import ArgError, Parser
10 class MapSquare(game_common.Map):
12 def list_terrain_to_lines(self, terrain_as_list):
13 terrain = ''.join(terrain_as_list)
16 while start_cut < len(terrain):
17 limit = start_cut + self.game.world.map_.size[1]
18 map_lines += [terrain[start_cut:limit]]
20 return "\n".join(map_lines)
23 class MapHex(game_common.Map):
25 def list_terrain_to_lines(self, terrain_as_list):
26 new_terrain_list = [' ']
29 for c in terrain_as_list:
30 new_terrain_list += [c, ' ']
33 new_terrain_list += ['\n']
37 new_terrain_list += [' ']
38 return ''.join(new_terrain_list)
41 map_manager = game_common.MapManager(globals())
44 class World(game_common.World):
46 def __init__(self, game, *args, **kwargs):
47 """Extend original with local classes and empty default map.
49 We need the empty default map because we draw the map widget
50 on any update, even before we actually receive map data.
52 super().__init__(*args, **kwargs)
54 self.map_ = self.game.map_manager.get_map_class('Hex')()
57 class Game(game_common.CommonCommandsMixin):
60 self.map_manager = map_manager
61 self.world = World(self)
65 """Prefix msg plus newline to self.log_text."""
66 self.log_text = msg + '\n' + self.log_text
68 def symbol_for_type(self, type_):
72 elif type_ == 'monster':
76 def cmd_LAST_PLAYER_TASK_RESULT(self, msg):
78 self.log_text = msg + '\n' + self.log_text
79 cmd_LAST_PLAYER_TASK_RESULT.argtypes = 'string'
81 def cmd_TURN_FINISHED(self, n):
82 """Do nothing. (This may be extended later.)"""
84 cmd_TURN_FINISHED.argtypes = 'int:nonneg'
86 def cmd_NEW_TURN(self, n):
87 """Set self.turn to n, empty self.things."""
89 self.world.things = []
90 cmd_NEW_TURN.argtypes = 'int:nonneg'
92 def cmd_VISIBLE_MAP_LINE(self, y, terrain_line):
93 self.world.map_.set_line(y, terrain_line)
94 cmd_VISIBLE_MAP_LINE.argtypes = 'int:nonneg string'
99 def __init__(self, socket, game):
100 """Set up all urwid widgets we want on the screen."""
102 edit_widget = self.EditToSocketWidget(socket, 'SEND: ')
103 self.map_widget = urwid.Text('', wrap='clip')
104 self.turn_widget = urwid.Text('')
105 self.log_widget = urwid.Text('')
106 map_box = urwid.Padding(self.map_widget, width=50)
107 widget_pile = urwid.Pile([edit_widget, map_box, self.turn_widget,
109 self.top = urwid.Filler(widget_pile, valign='top')
112 """Draw map view from .game.map_.terrain, .game.things."""
113 terrain_as_list = list(self.game.world.map_.terrain[:])
114 for t in self.game.world.things:
115 pos_i = self.game.world.map_.get_position_index(t.position)
116 terrain_as_list[pos_i] = self.game.symbol_for_type(t.type_)
117 return self.game.world.map_.list_terrain_to_lines(terrain_as_list)
120 """Redraw all non-edit widgets."""
121 self.turn_widget.set_text('TURN: ' + str(self.game.world.turn))
122 self.log_widget.set_text(self.game.log_text)
123 self.map_widget.set_text(self.draw_map())
125 class EditToSocketWidget(urwid.Edit):
126 """Extends urwid.Edit with socket to send input on 'enter' to."""
128 def __init__(self, socket, *args, **kwargs):
129 super().__init__(*args, **kwargs)
132 def keypress(self, size, key):
133 """Extend super(): on Enter, send .edit_text, and empty it."""
135 return super().keypress(size, key)
136 plom_socket_io.send(self.socket, self.edit_text)
140 class PlomRogueClient:
142 def __init__(self, game, socket):
143 """Build client urwid interface around socket communication.
145 Sets up all widgets for writing to the socket and representing data
146 from it. Sending via a WidgetManager.EditToSocket widget is
147 straightforward; polling the socket for input from the server in
148 parallel to the urwid main loop not so much:
150 The urwid developers warn against sharing urwid resources among
151 threads, so having a socket polling thread for writing to an urwid
152 widget while other widgets are handled in other threads would be
153 dangerous. Urwid developers recommend using urwid's watch_pipe
154 mechanism instead: using a pipe from non-urwid threads into a single
155 urwid thread. We use self.recv_loop_thread to poll the socket, therein
156 write socket.recv output to an object that is then linked to by
157 self.server_output (which is known to the urwid thread), then use the
158 pipe to urwid to trigger it pulling new data from self.server_output to
159 handle via self.handle_input. (We *could* pipe socket.recv output
160 directly, but then we get complicated buffering situations here as well
161 as in the urwid code that receives the pipe output. It's easier to just
162 tell the urwid code where it finds full new server messages to handle.)
165 self.parser = Parser(self.game)
167 self.widget_manager = WidgetManager(self.socket, self.game)
168 self.server_output = []
169 self.urwid_loop = urwid.MainLoop(self.widget_manager.top)
170 self.urwid_pipe_write_fd = self.urwid_loop.watch_pipe(self.
172 self.recv_loop_thread = threading.Thread(target=self.recv_loop)
174 def handle_input(self, trigger):
175 """On input from recv_loop thread, parse and enact commands.
177 Serves as a receiver to urwid's watch_pipe mechanism, with trigger the
178 data that a pipe defined by watch_pipe delivers. To avoid buffering
179 trouble, we don't care for that data beyond the fact that its receival
180 triggers this function: The sender is to write the data it wants to
181 deliver into the container referenced by self.server_output, and just
182 pipe the trigger to inform us about this.
184 If the message delivered is 'BYE', quits Urwid. Otherwise tries to
185 parse it as a command, and enact it. In all cases but the 'BYE', calls
186 self.widget_manager.update.
188 msg = self.server_output[0]
190 raise urwid.ExitMainLoop()
192 command = self.parser.parse(msg)
194 self.game.log('UNHANDLED INPUT: ' + msg)
197 except ArgError as e:
198 self.game.log('ARGUMENT ERROR: ' + msg + '\n' + str(e))
199 self.widget_manager.update()
200 del self.server_output[0]
203 """Loop to receive messages from socket, deliver them to urwid thread.
205 Waits for self.server_output to become empty (this signals that the
206 input handler is finished / ready to receive new input), then writes
207 finished message from socket to self.server_output, then sends a single
208 b' ' through self.urwid_pipe_write_fd to trigger the input handler.
211 for msg in plom_socket_io.recv(self.socket):
212 while len(self.server_output) > 0: # Wait until self.server_output
213 pass # is emptied by input handler.
214 self.server_output += [msg]
215 os.write(self.urwid_pipe_write_fd, b' ')
218 """Run in parallel urwid_loop and recv_loop threads."""
219 self.recv_loop_thread.start()
220 self.urwid_loop.run()
221 self.recv_loop_thread.join()
224 if __name__ == '__main__':
226 s = socket.create_connection(('127.0.0.1', 5000))
227 p = PlomRogueClient(game, s)