main.lua

--[[
    lama is a MUD server made in Lua.
    Copyright (C) 2013 Curtis Erickson

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
]]

--- Entry point for the game.
-- @author milkmanjack
package.path = package.path .. ";./src/?.lua"

-- local packages that provide extra functionality
require("config")
require("loader")
require("etc")

-- libraries we need
require("lfs")
require("socket")
require("md5")
require("logging")
require("logging.file")
require("logging.console")

-- show the current config settings
config.present()

--- if MCCP2 is enabled, load up lzlib
if config.MCCP2IsEnabled() then
	if not prequire("zlib") then
		print("MCCP2 disabled automatically. (lzlib not installed)")
		config.enableMCCP2=false
	else
		_G.zlib = require("zlib")
	end
end

-- load all game packages
loadPackages()

-- open the game for play
local port = select(1, ...) -- first given argument is the port to use
local _, err = Game.openOnPort(tonumber(port) or config.getDefaultPort())
if not _ then
  Game.error("failed to open game: " .. err)
	os.exit(0)
end

-- primary game loop
while Game.isReady() do
	Game.update()
	socket.select(nil,nil,0.1)

	-- handle hotboot
	-- hotboot is handled here instead of Game.update() due to context issues.
	if Game:getState() == GameState.HOTBOOT then
		Game.info("*** Hotbooting game...")

		local playerID = Game.playerID

		-- preserve players (disconnect the ones that haven't entered the game yet)
		local preservedData = {}
		for i,v in ipairs(Game.getPlayers()) do
			-- kill players that are out of game
			if v:getState() ~= PlayerState.PLAYING then
				v:sendMessage("\n\n*** HOTBOOT IN PROGRESS!!! ***\n***    COME BACK LATER!    ***\n\n")
				Game.disconnectPlayer(v)

			-- preserve players that are in-game
			else
				local client, mob = v:getClient(), v:getMob()
				DatabaseManager.saveCharacter(mob) -- save the mob

				-- compile this player's relevant data
				local data = {}
				data.id = v:getID()
				data.socket = client:getSocket()
				data.options = client.options
				data.name = mob:getName()
				table.insert(preservedData, data)

				-- let the player know what's up.
				Game.info(string.format("*** Preserved %s for hotboot.", tostring(v)))
				v:sendMessage("\n*** HOTBOOT ***\n") -- inform them of the hotboot
			end
		end

		local serverSocket = Game.server:getSocket()

		-- reload packages
		reloadPackages()
		-- A new Game has been loaded, along with a new everything else.

		-- grab Server package, load old game data.
		local Server = require("obj.Server")
		Game.playerID = playerID

		-- re-run the game, recover from hotboot
		local server = Server:new(serverSocket)
		Game.setState(GameState.HOTBOOT)
		Game.openOnServer(server)
		Game.recoverFromHotboot(preservedData)
	end
end

print("Game closed.")