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server.py
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server.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on May 23.05.17 14:45
@author: ephtron
"""
import json
import os.path
import base64, uuid
import tornado.escape
import tornado.web
import tornado.ioloop
from sqlalchemy.orm.collections import _PlainColumnGetter
from tornado import gen
from tornado.options import define, options
from lib.GameLogic import GameLogic
from lib.Event import PlayerEnterEvent, MessageEvent, GenericEvent
define("port", default=8888, help="run on the given port", type=int)
define("debug", default=False, help="run in debug mode")
class BaseHandler(tornado.web.RequestHandler):
def initialize(self, logic):
self.logic = logic
def get_current_user(self):
_player_name = self.get_secure_cookie("player")
if _player_name is not None:
return _player_name.decode('utf-8')
def get_current_player_obj(self):
_player_id = self.get_secure_cookie("player_id")
if _player_id is not None:
_player_id = int(_player_id.decode('utf-8'))
if _player_id in self.logic.players:
_player = self.logic.get_player(_player_id)
if _player:
return _player
def set_current_user(self, player_name):
if player_name:
self.set_secure_cookie("player", player_name)
_player_id = self.logic.create_player(player_name)
self.set_secure_cookie("player_id", str(_player_id))
else:
self.clear_cookie("player")
self.clear_cookie("player_id")
class GameHandler(BaseHandler):
@tornado.web.authenticated
def get(self):
self.render("game.html")
@tornado.web.authenticated
def post(self):
_command = self.get_argument('command', '')
if _command == "start":
self.redirect(u"/labyrinth/0/0")
else:
self.redirect(u"/")
class LabyrinthHandler(BaseHandler):
@tornado.web.authenticated
def get(self, level_id, tile_id):
level_id = int(level_id)
tile_id = int(tile_id)
# get current level and tile
_current_level = self.logic.get_level(level_id)
_current_tile = _current_level.get_tile(tile_id)
# get player and add her to the current tile
_player = self.get_current_player_obj()
print("player: ", _player)
_current_tile.player_enters(_player)
_player.set_current_tile(_current_tile)
# create player-joined event
# Todo: only send enter event when player really enters, not on refresh
_event = PlayerEnterEvent(_player.name)
self.logic.new_event([_event])
_event_cache_json = json.dumps([event.to_json() for event in self.logic.event_cache])
self.render("labyrinth.html",
tile=_current_tile,
tile_json=_current_tile.to_json(),
events=_event_cache_json)
class NewEventHandler(BaseHandler):
def post(self):
_player = self.get_current_player_obj()
if _player:
_event = MessageEvent(self.get_argument("body"), _player.get_name())
# old code: _event["player"] = self.get_current_user().decode('utf-8')
# to_basestring is necessary for Python 3's json encoder, which doesn't accept byte strings.
if self.get_argument("next", None):
print("get next", self.get_argument("next"))
self.redirect(self.get_argument("next"))
else:
_event_json = _event.to_json()
print("Writing:", _event_json)
self.write(_event_json)
self.logic.new_event([_event])
class EventUpdateHandler(BaseHandler):
@gen.coroutine
def post(self):
print("EventUpdateHandler received post")
cursor = self.get_argument("cursor", None)
# print("cursor out: ", cursor)
# Save the future returned by wait_for_events so we can cancel it in wait_for_events
self.future = self.logic.wait_for_events(cursor=cursor)
events = yield self.future
if self.request.connection.stream.closed():
print("closed")
return
# self.write({'status':'ok'})
print("my yielded events", events)
events_json = json.dumps({"events":[event.to_json() for event in events]})
# json = dict(events=events)
# _event_cache_json = json.dumps(self.logic.event_cache)
print("Sending json event:", events_json)
self.write(events_json)
def on_connection_close(self):
print("closed connection")
self.logic.cancel_wait(self.future)
class LoginHandler(BaseHandler):
def get(self):
self.render("login.html")
def post(self):
player_name = self.get_argument('player_name', '')
if player_name is not None:
if not self.get_secure_cookie('player'):
self.set_current_user(player_name)
self.redirect(u"/")
class LogoutHandler(BaseHandler):
@tornado.web.authenticated
def get(self):
self.clear_cookie("user")
self.redirect(u"/")
@tornado.web.authenticated
def post(self):
logout = self.get_argument('logout', '')
if logout == "logout":
self.clear_cookie("user")
self.redirect(u"/")
class GameApp(tornado.web.Application):
def __init__(self, logic):
handlers = [
(r"/", GameHandler, dict(logic=logic)),
(r"/event/new", NewEventHandler, dict(logic=logic)),
(r"/event/update", EventUpdateHandler, dict(logic=logic)),
(r"/login", LoginHandler, dict(logic=logic)),
(r"/logout", LogoutHandler, dict(logic=logic)),
(r"/labyrinth/([^/]*)/([^/]*)", LabyrinthHandler, dict(logic=logic))
]
# create random + safe cookie_secret key
secret = base64.b64encode(uuid.uuid4().bytes + uuid.uuid4().bytes)
settings = {
"static_path": os.path.join(os.path.dirname(__file__), "static"),
"template_path": os.path.join(os.path.dirname(__file__), "templates"),
"cookie_secret": secret,
"login_url": "/login",
"xsrf_cookies": True,
"debug": options.debug,
}
tornado.web.Application.__init__(self, handlers, **settings)
if __name__ == "__main__":
logic = GameLogic()
app = GameApp(logic)
app.listen(options.port)
tornado.ioloop.IOLoop.current().start()