simplemud.py

#!/usr/bin/env python

"""A simple Multi-User Dungeon (MUD) game. Players can talk to each
other, examine their surroundings and move between rooms.

Some ideas for things to try adding:
    * More rooms to explore
    * An 'emote' command e.g. 'emote laughs out loud' -> 'Mark laughs
        out loud'
    * A 'whisper' command for talking to individual players
    * A 'shout' command for yelling to players in all rooms
    * Items to look at in rooms e.g. 'look fireplace' -> 'You see a
        roaring, glowing fire'
    * Items to pick up e.g. 'take rock' -> 'You pick up the rock'
    * Monsters to fight
    * Loot to collect
    * Saving players accounts between sessions
    * A password login
    * A shop from which to buy items

author: Mark Frimston - mfrimston@gmail.com
"""

import logging
import sys
import time

from game_data import rooms
from mudserver import MudServer
from lib.constants import DEFAULT_START_LOCATION
from lib.command import Commands
from lib.models.game_state import GameState
from lib.models.player import Player

game = GameState(MudServer())
commands = Commands(game)

log = logging.getLogger()

def init_logging():
    formatter = logging.Formatter("%(asctime)s [%(name)s] %(levelname)s: "\
                                    "%(message)s")
    consoleHandler = logging.StreamHandler()
    consoleHandler.setFormatter(formatter)
    log.addHandler(consoleHandler)

def handle_new_player(player: Player):
    # Any new command event will become the player's name.
    player.name = command.capitalize()

    game.broadcast(f"{player.name} entered the game.")

    player.message(f"Welcome to the game, {player.name}.")
    player.message("Type 'help' for a list of commands. Have fun!")
    player.move(DEFAULT_START_LOCATION)

if __name__ == '__main__':
    init_logging()
    log.setLevel(logging.DEBUG)

    log.info("Starting up...")
    try:
        # main game loop. We loop forever (i.e. until the program is terminated)
        while True:

            # pause for 1/5 of a second on each loop, so that we don't constantly
            # use 100% CPU time
            time.sleep(0.2)

            # 'update' must be called in the loop to keep the game running and give
            # us up-to-date information
            game.update()

            # go through any newly connected players
            new_players = game.handle_player_join()

            # go through any recently disconnected players
            game.handle_player_leave()

            # go through any new commands sent from players
            for event in game.server.get_commands():
                client = event.client
                command = event.command
                params = event.params
                
                player = game.find_player_by_client_id(client.uuid)

                # if for any reason the player isn't in the player map, skip them and
                # move on to the next one
                if not player:
                    continue

                if player.name is None:
                    handle_new_player(player)
                    continue

                # each of the possible commands is handled below. Try adding new
                # commands to the game!
                commands.execute_command(player, command, params)
    except KeyboardInterrupt:
        log.info("Terminated by user. Exiting gracefully.")
        sys.exit(1)