#!/usr/bin/env python3
-
import urwid
import plom_socket_io
import socket
import threading
+from parser import ArgError, Parser
+
+
+class Game:
+ turn = 0
+ log_text = ''
+ map_size = (5, 5)
+ terrain_map = ('?'*5)*5
+ things = []
+
+ class Thing:
+ def __init__(self, position, symbol):
+ self.position = position
+ self.symbol = symbol
+
+ def log(self, msg):
+ """Prefix msg plus newline to self.log_text."""
+ self.log_text = msg + '\n' + self.log_text
+
+ def cmd_THING(self, type_, yx):
+ """Add to self.things at .position yx with .symbol defined by type_."""
+ symbol = '?'
+ if type_ == 'TYPE:human':
+ symbol = '@'
+ elif type_ == 'TYPE:monster':
+ symbol = 'm'
+ self.things += [self.Thing(yx, symbol)]
+ cmd_THING.argtypes = 'string yx_tuple:nonneg'
+
+ def cmd_MAP_SIZE(self, yx):
+ """Set self.map_size to yx, redraw self.terrain_map as '?' cells."""
+ y, x = yx
+ self.map_size = (y, x)
+ self.terrain_map = ''
+ for y in range(self.map_size[0]):
+ self.terrain_map += '?' * self.map_size[1]# + '\n'
+ self.terrain_map = self.terrain_map[:-1]
+ cmd_MAP_SIZE.argtypes = 'yx_tuple:nonneg'
+
+ def cmd_TURN_FINISHED(self, n):
+ """Do nothing. (This may be extended later.)"""
+ pass
+ cmd_TURN_FINISHED.argtypes = 'int:nonneg'
+
+ def cmd_NEW_TURN(self, n):
+ """Set self.turn to n, empty self.things."""
+ self.turn = n
+ self.things = []
+ cmd_NEW_TURN.argtypes = 'int:nonneg'
+
+ def cmd_TERRAIN_LINE(self, y, terrain_line):
+ width_map = self.map_size[1]
+ if y >= self.map_size[0]:
+ raise ArgError('too large row number %s' % y)
+ width_line = len(terrain_line)
+ if width_line > width_map:
+ raise ArgError('too large map line width %s' % width_line)
+ self.terrain_map = self.terrain_map[:y * width_map] + \
+ terrain_line + self.terrain_map[(y + 1) * width_map:]
+ cmd_TERRAIN_LINE.argtypes = 'int:nonneg string'
+
+
+class WidgetManager:
+
+ def __init__(self, socket, game):
+ """Set up all urwid widgets we want on the screen."""
+ self.game = game
+ edit_widget = self.EditToSocketWidget(socket, 'SEND: ')
+ self.map_widget = urwid.Text('', wrap='clip')
+ self.turn_widget = urwid.Text('')
+ self.log_widget = urwid.Text('')
+ map_box = urwid.Padding(self.map_widget, width=50)
+ widget_pile = urwid.Pile([edit_widget, map_box, self.turn_widget,
+ self.log_widget])
+ self.top = urwid.Filler(widget_pile, valign='top')
+
+ def draw_map(self):
+ """Draw map view from .game.terrain_map, .game.things."""
+ map_lines = []
+ map_size = len(self.game.terrain_map)
+ start_cut = 0
+ while start_cut < map_size:
+ limit = start_cut + self.game.map_size[1]
+ map_lines += [self.game.terrain_map[start_cut:limit]]
+ start_cut = limit
+ for t in self.game.things:
+ line_as_list = list(map_lines[t.position[0]])
+ line_as_list[t.position[1]] = t.symbol
+ map_lines[t.position[0]] = ''.join(line_as_list)
+ return "\n".join(map_lines)
+
+ def update(self):
+ """Redraw all non-edit widgets."""
+ self.turn_widget.set_text('TURN: ' + str(self.game.turn))
+ self.log_widget.set_text(self.game.log_text)
+ self.map_widget.set_text(self.draw_map())
+
+ class EditToSocketWidget(urwid.Edit):
+ """Extends urwid.Edit with socket to send input on 'enter' to."""
+ def __init__(self, socket, *args, **kwargs):
+ super().__init__(*args, **kwargs)
+ self.socket = socket
-class UrwidSetup():
+ def keypress(self, size, key):
+ """Extend super(): on Enter, send .edit_text, and empty it."""
+ if key != 'enter':
+ return super().keypress(size, key)
+ plom_socket_io.send(self.socket, self.edit_text)
+ self.edit_text = ''
- def __init__(self, socket):
+
+class PlomRogueClient:
+
+ def __init__(self, game, socket):
"""Build client urwid interface around socket communication.
Sets up all widgets for writing to the socket and representing data
- from it. Sending via a self.EditToSocket widget is straightforward;
- polling the socket for input from the server in parallel to the urwid
- main loop not so much:
+ from it. Sending via a WidgetManager.EditToSocket widget is
+ straightforward; polling the socket for input from the server in
+ parallel to the urwid main loop not so much:
The urwid developers warn against sharing urwid resources among
threads, so having a socket polling thread for writing to an urwid
mechanism instead: using a pipe from non-urwid threads into a single
urwid thread. We use self.recv_loop_thread to poll the socket, therein
write socket.recv output to an object that is then linked to by
- self.server_output (which is known the urwid thread), and then use the
+ self.server_output (which is known to the urwid thread), then use the
pipe to urwid to trigger it pulling new data from self.server_output to
- handle via self.InputHandler. (We *could* pipe socket.recv output
+ handle via self.handle_input. (We *could* pipe socket.recv output
directly, but then we get complicated buffering situations here as well
- as in the urwid code that receives the pipe output. It's much easier to
- just tell the urwid code where it finds a full new server message to
- handle.)
+ as in the urwid code that receives the pipe output. It's easier to just
+ tell the urwid code where it finds full new server messages to handle.)
"""
+ self.game = game
+ self.parser = Parser(self.game)
self.socket = socket
- self.main_loop = urwid.MainLoop(self.setup_widgets())
- self.server_output = ['']
- input_handler = getattr(self.InputHandler(self.reply_widget,
- self.map_widget,
- self.server_output),
- 'handle_input')
- self.urwid_pipe_write_fd = self.main_loop.watch_pipe(input_handler)
+ self.widget_manager = WidgetManager(self.socket, self.game)
+ self.server_output = []
+ self.urwid_loop = urwid.MainLoop(self.widget_manager.top)
+ self.urwid_pipe_write_fd = self.urwid_loop.watch_pipe(self.
+ handle_input)
self.recv_loop_thread = threading.Thread(target=self.recv_loop)
- def setup_widgets(self):
- """Return container widget with all widgets we want on our screen.
+ def handle_input(self, trigger):
+ """On input from recv_loop thread, parse and enact commands.
- Sets up an urwid.Pile inside a returned urwid.Filler; top to bottom:
- - an EditToSocket widget, prefixing self.socket input with 'SEND: '
- - self.reply_widget, a urwid.Text widget printing self.socket replies
- - a 50-col wide urwid.Padding container for self.map_widget, which is
- to print clipped map representations
- """
- edit_widget = self.EditToSocket(self.socket, 'SEND: ')
- self.reply_widget = urwid.Text('')
- self.map_widget = urwid.Text('', wrap='clip')
- map_box = urwid.Padding(self.map_widget, width=50)
- widget_pile = urwid.Pile([edit_widget, self.reply_widget, map_box])
- return urwid.Filler(widget_pile)
-
- class EditToSocket(urwid.Edit):
- """Extends urwid.Edit with socket to send input on 'enter' to."""
-
- def __init__(self, socket, *args, **kwargs):
- super().__init__(*args, **kwargs)
- self.socket = socket
-
- def keypress(self, size, key):
- """Extend super(): on Enter, send .edit_text, and empty it."""
- if key != 'enter':
- return super().keypress(size, key)
- plom_socket_io.send(self.socket, self.edit_text)
- self.edit_text = ''
+ Serves as a receiver to urwid's watch_pipe mechanism, with trigger the
+ data that a pipe defined by watch_pipe delivers. To avoid buffering
+ trouble, we don't care for that data beyond the fact that its receival
+ triggers this function: The sender is to write the data it wants to
+ deliver into the container referenced by self.server_output, and just
+ pipe the trigger to inform us about this.
- class InputHandler:
- """Delivers data from other thread to widget via message_container.
-
- The class only exists to provide handle_input as a bound method, with
- widget and message_container pre-set, as (bound) handle_input is used
- as a callback in urwid's watch_pipe – which merely provides its
- callback target with one parameter for a pipe to read data from an
- urwid-external thread.
+ If the message delivered is 'BYE', quits Urwid. Otherwise tries to
+ parse it as a command, and enact it. In all cases but the 'BYE', calls
+ self.widget_manager.update.
"""
-
- def __init__(self, widget1, widget2, message_container):
- self.widget1 = widget1
- self.widget2 = widget2
- self.message_container = message_container
-
- def handle_input(self, trigger):
- """On input from other thread, either quit or write to widget text.
-
- Serves as a receiver to urwid's watch_pipe mechanism, with trigger
- the data that a pipe defined by watch_pipe delivers. To avoid
- buffering trouble, we don't care for that data beyond the fact that
- its receival triggers this function: The sender is to write the
- data it wants to deliver into the container referenced by
- self.message_container, and just pipe the trigger to inform us
- about this.
-
- If the message delivered is 'BYE', quits Urbit.
- """
- if self.message_container[0] == 'BYE':
- raise urwid.ExitMainLoop()
- return
- self.widget1.set_text('SERVER: ' + self.message_container[0])
- self.widget2.set_text('loremipsumdolorsitamet '
- 'loremipsumdolorsitamet'
- 'loremipsumdolorsitamet '
- 'loremipsumdolorsitamet\n'
- 'loremipsumdolorsitamet '
- 'loremipsumdolorsitamet')
+ msg = self.server_output[0]
+ if msg == 'BYE':
+ raise urwid.ExitMainLoop()
+ try:
+ command = self.parser.parse(msg)
+ if command is None:
+ self.game.log('UNHANDLED INPUT: ' + msg)
+ else:
+ command()
+ except ArgError as e:
+ self.game.log('ARGUMENT ERROR: ' + msg + '\n' + str(e))
+ self.widget_manager.update()
+ del self.server_output[0]
def recv_loop(self):
- """Loop to receive messages from socket and deliver them to urwid.
+ """Loop to receive messages from socket, deliver them to urwid thread.
- Writes finished messages from the socket to self.server_output[0],
- then sends a single b' ' through self.urwid_pipe_write_fd to trigger
- the urwid code to read from it.
+ Waits for self.server_output to become empty (this signals that the
+ input handler is finished / ready to receive new input), then writes
+ finished message from socket to self.server_output, then sends a single
+ b' ' through self.urwid_pipe_write_fd to trigger the input handler.
"""
import os
for msg in plom_socket_io.recv(self.socket):
- self.server_output[0] = msg
+ while len(self.server_output) > 0: # Wait until self.server_output
+ pass # is emptied by input handler.
+ self.server_output += [msg]
os.write(self.urwid_pipe_write_fd, b' ')
def run(self):
- """Run in parallel main and recv_loop thread."""
+ """Run in parallel urwid_loop and recv_loop threads."""
self.recv_loop_thread.start()
- self.main_loop.run()
+ self.urwid_loop.run()
self.recv_loop_thread.join()
-s = socket.create_connection(('127.0.0.1', 5000))
-u = UrwidSetup(s)
-u.run()
-s.close()
+if __name__ == '__main__':
+ game = Game()
+ s = socket.create_connection(('127.0.0.1', 5000))
+ p = PlomRogueClient(game, s)
+ p.run()
+ s.close()
projects / plomrogue2-experiments / blobdiff