mainmenu.lua

			"Perttu Ahola (celeron55) <celeron55@gmail.com>,"..
			"Ryan Kwolek (kwolekr) <kwolekr@minetest.net>,"..
			"PilzAdam <pilzadam@minetest.net>," ..
			"Ilya Zhuravlev (xyz) <xyz@minetest.net>,"..
			"Lisa Milne (darkrose) <lisa@ltmnet.com>,"..
			"Maciej Kasatkin (RealBadAngel) <mk@realbadangel.pl>,"..
			"proller <proler@gmail.com>,"..
			"sfan5 <sfan5@live.de>,"..
			"kahrl <kahrl@gmx.net>,"..
			"sapier,"..
			"ShadowNinja <shadowninja@minetest.net>,"..
			"Nathanaël Courant (Nore/Novatux) <nore@mesecons.net>,"..
			","..
			"#FFFF00" .. fgettext("Active Contributors") .. "," ..
			"Vanessa Ezekowitz (VanessaE) <vanessaezekowitz@gmail.com>,"..
			"Jurgen Doser (doserj) <jurgen.doser@gmail.com>,"..
			"Jeija <jeija@mesecons.net>,"..
			"MirceaKitsune <mirceakitsune@gmail.com>,"..
			"dannydark <the_skeleton_of_a_child@yahoo.co.uk>,"..
			"0gb.us <0gb.us@0gb.us>,"..
			"," ..
			"#FFFF00" .. fgettext("Previous Contributors") .. "," ..
			"Guiseppe Bilotta (Oblomov) <guiseppe.bilotta@gmail.com>,"..
			"Jonathan Neuschafer <j.neuschaefer@gmx.net>,"..
			"Nils Dagsson Moskopp (erlehmann) <nils@dieweltistgarnichtso.net>,"..
			"Constantin Wenger (SpeedProg) <constantin.wenger@googlemail.com>,"..
			"matttpt <matttpt@gmail.com>,"..
			"JacobF <queatz@gmail.com>,"..
			";0;true]"
end

--------------------------------------------------------------------------------
function tabbuilder.init()
	tabbuilder.tabfuncs = {
		singleplayer  = tabbuilder.tab_singleplayer,
		multiplayer   = tabbuilder.tab_multiplayer,
		server        = tabbuilder.tab_server,
		settings      = tabbuilder.tab_settings,
		texture_packs = tabbuilder.tab_texture_packs,
		credits       = tabbuilder.tab_credits,
		dialog_create_world = tabbuilder.dialog_create_world,
		dialog_delete_world = tabbuilder.dialog_delete_world
	}

	tabbuilder.tabsizes = {
		dialog_create_world = {width=12, height=7},
		dialog_delete_world = {width=12, height=5.2}
	}

	tabbuilder.current_tab = engine.setting_get("main_menu_tab")
	
	if tabbuilder.current_tab == nil or
		tabbuilder.current_tab == "" then
		tabbuilder.current_tab = "singleplayer"
		engine.setting_set("main_menu_tab",tabbuilder.current_tab)
	end
	
	--initialize tab buttons
	tabbuilder.last_tab = nil
	tabbuilder.show_buttons = true
	
	tabbuilder.current_buttons = {}
	table.insert(tabbuilder.current_buttons,{name="singleplayer", caption=fgettext("Singleplayer")})
	table.insert(tabbuilder.current_buttons,{name="multiplayer", caption=fgettext("Client")})
	table.insert(tabbuilder.current_buttons,{name="server", caption=fgettext("Server")})
	table.insert(tabbuilder.current_buttons,{name="settings", caption=fgettext("Settings")})
	table.insert(tabbuilder.current_buttons,{name="texture_packs", caption=fgettext("Texture Packs")})
	
	if engine.setting_getbool("main_menu_game_mgr") then
		table.insert(tabbuilder.current_buttons,{name="game_mgr", caption=fgettext("Games")})
	end
	
	if engine.setting_getbool("main_menu_mod_mgr") then
		table.insert(tabbuilder.current_buttons,{name="mod_mgr", caption=fgettext("Mods")})
	end
	table.insert(tabbuilder.current_buttons,{name="credits", caption=fgettext("Credits")})
	
	
	for i=1,#tabbuilder.current_buttons,1 do
		if tabbuilder.current_buttons[i].name == tabbuilder.current_tab then
			tabbuilder.last_tab_index = i
		end
	end
	
	if tabbuilder.current_tab ~= "singleplayer" then
		menu.update_gametype(true)
	else
		menu.update_gametype()
	end
end

--------------------------------------------------------------------------------
function tabbuilder.checkretval(retval)

	if retval ~= nil then
		if retval.current_tab ~= nil then
			tabbuilder.current_tab = retval.current_tab
		end
		
		if retval.is_dialog ~= nil then
			tabbuilder.is_dialog = retval.is_dialog
		end
		
		if retval.show_buttons ~= nil then
			tabbuilder.show_buttons = retval.show_buttons
		end
		
		if retval.skipformupdate ~= nil then
			tabbuilder.skipformupdate = retval.skipformupdate
		end
	end
end

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- initialize callbacks
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
engine.button_handler = function(fields)
	--print("Buttonhandler: tab: " .. tabbuilder.current_tab .. " fields: " .. dump(fields))
	
	if fields["btn_error_confirm"] then
		gamedata.errormessage = nil
	end
	
	local retval = modmgr.handle_buttons(tabbuilder.current_tab,fields)
	tabbuilder.checkretval(retval)
	
	retval = gamemgr.handle_buttons(tabbuilder.current_tab,fields)
	tabbuilder.checkretval(retval)
	
	retval = modstore.handle_buttons(tabbuilder.current_tab,fields)
	tabbuilder.checkretval(retval)
	
	if tabbuilder.current_tab == "dialog_create_world" then
		tabbuilder.handle_create_world_buttons(fields)
	end
	
	if tabbuilder.current_tab == "dialog_delete_world" then
		tabbuilder.handle_delete_world_buttons(fields)
	end
	
	if tabbuilder.current_tab == "singleplayer" then
		tabbuilder.handle_singleplayer_buttons(fields)
	end
	
	if tabbuilder.current_tab == "texture_packs" then
		tabbuilder.handle_texture_pack_buttons(fields)
	end
	
	if tabbuilder.current_tab == "multiplayer" then
		tabbuilder.handle_multiplayer_buttons(fields)
	end
	
	if tabbuilder.current_tab == "settings" then
		tabbuilder.handle_settings_buttons(fields)
	end
	
	if tabbuilder.current_tab == "server" then
		tabbuilder.handle_server_buttons(fields)
	end
	
	--tab buttons
	tabbuilder.handle_tab_buttons(fields)
	
	--menubar buttons
	menubar.handle_buttons(fields)
	
	if not tabbuilder.skipformupdate then
		--update menu
		update_menu()
	else
		tabbuilder.skipformupdate = false
	end
end

--------------------------------------------------------------------------------
engine.event_handler = function(event)
	if event == "MenuQuit" then
		if tabbuilder.is_dialog then
			tabbuilder.is_dialog = false
			tabbuilder.show_buttons = true
			tabbuilder.current_tab = engine.setting_get("main_menu_tab")
			menu.update_gametype()
			update_menu()
		else
			engine.close()
		end
	end
end

--------------------------------------------------------------------------------
function menu.update_gametype(reset)
	if reset then
		mm_texture.reset()
		engine.set_topleft_text("")
		filterlist.set_filtercriteria(worldlist,nil)
	else
		local game = menu.lastgame()
		mm_texture.update(tabbuilder.current_tab,game)
		engine.set_topleft_text(game.name)
		filterlist.set_filtercriteria(worldlist,game.id)
	end
end

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- menu startup
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
init_globals()
mm_texture.init()
menu.init()
tabbuilder.init()
menubar.refresh()
modstore.init()

engine.sound_play("main_menu", true)

update_menu()