diff --git a/main.lua b/main.lua
index 5699824..7c043c8 100644
--- a/main.lua
+++ b/main.lua
@@ -1,17 +1,26 @@
--- debug --
--- if os.getenv("LOCAL_LUA_DEBUGGER_VSCODE") == "1" then
---     require("lldebugger").start()
--- end
+-- debug
+if os.getenv("LOCAL_LUA_DEBUGGER_VSCODE") == "1" then
+    require("lldebugger").start()
+end
 
--- libraries --
+-- libraries
 Object = require 'lib/classic/classic'
 Baton = require 'lib/baton/baton'
 Timer = require 'lib/hump/timer'
 
--- objects --
-Healthbar = require 'obj/Healthbar'
+-- objects
+Room = require 'obj/Room'
 
 function love.load()
+    ---@type Room|nil
+    current_room = nil
+
+    -- load rooms
+    local room_files = {}
+    recursiveEnumerate('rooms', room_files)
+    requireFiles(room_files)
+
+    -- load input
     input = Baton.new {
         controls = {
             left = {'key:left', 'key:a'},
@@ -24,16 +33,46 @@ function love.load()
             move = {'left', 'right', 'up', 'down'}
         }
     }
-    timer = Timer()
-    health = Healthbar()
 end
 
 function love.update(dt)
     input:update(dt)
-    timer:update(dt)
-    health:update(dt)
+    if current_room then current_room:update(dt) end
 end
 
 function love.draw()
-    health:draw()
+    if current_room then current_room:draw() end
+end
+
+---Enumerates files in a folder and inserts them to a provided table.
+---@param folder string path to folder to scan
+---@param file_list table table to be inserted to
+function recursiveEnumerate(folder, file_list)
+    local items = love.filesystem.getDirectoryItems(folder)
+    for _, item in ipairs(items) do
+        local file = folder .. '/' .. item
+---@diagnostic disable-next-line: undefined-field
+        if love.filesystem.isFile(file) then
+            table.insert(file_list, file)
+---@diagnostic disable-next-line: undefined-field
+        elseif love.filesystem.isDirectory(file) then
+            recursiveEnumerate(file, file_list)
+        end
+    end
+end
+
+---Load files table as lua modules.
+---@param files table table containing files to be loaded
+function requireFiles(files)
+    for _, file in ipairs(files) do
+        local file = file:sub(1, -5)
+        require(file)
+    end
+end
+
+---Go to a specific room.
+---@param room_type string the name of the room as registered
+---@param ... any arguments passed to the room constructor
+function gotoRoom(room_type, ...)
+    current_room = _G[room_type](...)
 end
diff --git a/obj/Healthbar.lua b/obj/Healthbar.lua
deleted file mode 100644
index 70b39a4..0000000
--- a/obj/Healthbar.lua
+++ /dev/null
@@ -1,41 +0,0 @@
-local Healthbar = Object:extend()
-
-function Healthbar:new(x, y, hp)
-    self.x = x or 100
-    self.y = y or 100
-    self.hp = hp or 100
-    self.max_width = 200
-    self.qwidth = (self.hp / 100) * self.max_width
-    self.lwidth = self.qwidth
-end
-
-function Healthbar:decrease(amount)
-    if self.hp ~= 0 then
-        if fg then timer:cancel(fg) end
-        if bg then timer:cancel(bg) end
-        if self.hp - amount <= 0 then
-            self.hp = 0
-        else
-            self.hp = self.hp - amount
-        end
-        local target_width = self.max_width * (self.hp / 100)
-        fg = timer:tween(0.3, self, {qwidth = target_width}, 'in-out-cubic')
-        bg = timer:tween(0.6, self, {lwidth = target_width}, 'in-out-cubic')
-    end
-end
-
-function Healthbar:update(dt)
-    if input:pressed('right') then self:decrease(20) end
-end
-
-function Healthbar:draw()
-    -- trailing hp
-    love.graphics.setColor(1, 0.5, 0.5)
-    love.graphics.rectangle("fill", self.x, self.y, self.lwidth, 20)
-
-    -- healthbar
-    love.graphics.setColor(1, 0.2, 0.2)
-    love.graphics.rectangle("fill", self.x, self.y, self.qwidth, 20)
-end
-
-return Healthbar
diff --git a/obj/Room.lua b/obj/Room.lua
new file mode 100644
index 0000000..9afa923
--- /dev/null
+++ b/obj/Room.lua
@@ -0,0 +1,16 @@
+---@module 'obj/Room'
+
+---@class Room:Object
+local Room = Object:extend()
+
+---Instantiates room.
+function Room:new() end
+
+---Updates room (see [love.update()](lua://love.update))
+---@param dt number delta time
+function Room:update(dt) end
+
+---Draws graphics (see [love.draw()](lua://love.draw))
+function Room:draw() end
+
+return Room