craft-server-image/server-ddb.py [387:450]:
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        if rows:
            log('rows from sqlite',rows[0][0])
            return rows[0][0]
        return self.get_default_block(x, y, z)
    def next_client_id(self):
        result = 1
        client_ids = set(x.client_id for x in self.clients)
        while result in client_ids:
            result += 1
        return result
    def on_connect(self, client):
        client.client_id = self.next_client_id()
        client.nick = 'guest%d' % client.client_id
        #log('CONN', client.client_id, *client.client_address)
        client.position = SPAWN_POINT
        self.clients.append(client)
        client.send(YOU, client.client_id, *client.position)
        client.send(TIME, time.time(), DAY_LENGTH)
        client.send(TALK, 'Welcome to Craft!')
        client.send(TALK, 'Type "/help" for a list of commands.')
        self.send_position(client)
        self.send_positions(client)
        self.send_nick(client)
        self.send_nicks(client)
    def on_data(self, client, data):
        #log('RECV', client.client_id, data)
        args = data.split(',')
        command, args = args[0], args[1:]
        if command in self.commands:
            func = self.commands[command]
            func(client, *args)
    def on_disconnect(self, client):
        #log('DISC', client.client_id, *client.client_address)
        self.clients.remove(client)
        self.send_disconnect(client)
        #self.send_talk('%s has disconnected from the server.' % client.nick)
    def on_version(self, client, version):
        if client.version is not None:
            return
        version = int(version)
        if version != 1:
            client.stop()
            return
        client.version = version
        # TODO: client.start() here
    def on_authenticate(self, client, username, access_token):
        user_id = None
        if username and access_token:
            payload = {
                'username': username,
                'access_token': access_token,
            }
            response = requests.post(AUTH_URL, data=payload)
            if response.status_code == 200 and response.text.isdigit():
                user_id = int(response.text)
        client.user_id = user_id
        if user_id is None:
            client.nick = 'guest%d' % client.client_id
            client.send(TALK, 'Visit craft.michaelfogleman.com to register!')
        else:
            client.nick = username
        self.send_nick(client)
        # TODO: has left message if was already authenticated
        self.send_talk('%s has joined the game.' % client.nick)
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craft-server-image/server.py [322:385]:
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        if rows:
            log('rows from sqlite',rows[0][0])
            return rows[0][0]
        return self.get_default_block(x, y, z)
    def next_client_id(self):
        result = 1
        client_ids = set(x.client_id for x in self.clients)
        while result in client_ids:
            result += 1
        return result
    def on_connect(self, client):
        client.client_id = self.next_client_id()
        client.nick = 'guest%d' % client.client_id
        #log('CONN', client.client_id, *client.client_address)
        client.position = SPAWN_POINT
        self.clients.append(client)
        client.send(YOU, client.client_id, *client.position)
        client.send(TIME, time.time(), DAY_LENGTH)
        client.send(TALK, 'Welcome to Craft!')
        client.send(TALK, 'Type "/help" for a list of commands.')
        self.send_position(client)
        self.send_positions(client)
        self.send_nick(client)
        self.send_nicks(client)
    def on_data(self, client, data):
        #log('RECV', client.client_id, data)
        args = data.split(',')
        command, args = args[0], args[1:]
        if command in self.commands:
            func = self.commands[command]
            func(client, *args)
    def on_disconnect(self, client):
        #log('DISC', client.client_id, *client.client_address)
        self.clients.remove(client)
        self.send_disconnect(client)
        #self.send_talk('%s has disconnected from the server.' % client.nick)
    def on_version(self, client, version):
        if client.version is not None:
            return
        version = int(version)
        if version != 1:
            client.stop()
            return
        client.version = version
        # TODO: client.start() here
    def on_authenticate(self, client, username, access_token):
        user_id = None
        if username and access_token:
            payload = {
                'username': username,
                'access_token': access_token,
            }
            response = requests.post(AUTH_URL, data=payload)
            if response.status_code == 200 and response.text.isdigit():
                user_id = int(response.text)
        client.user_id = user_id
        if user_id is None:
            client.nick = 'guest%d' % client.client_id
            client.send(TALK, 'Visit craft.michaelfogleman.com to register!')
        else:
            client.nick = username
        self.send_nick(client)
        # TODO: has left message if was already authenticated
        self.send_talk('%s has joined the game.' % client.nick)
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