feat: added intro sequence, fixed norman's sprite, placed him in various places

inc/window/window.game.lua

@@ -2,9 +2,7 @@
 local _available_decisions = {}
 local _selected_decision_index = 1
 
---- Draws the game window.
---- @within GameWindow
-function GameWindow.draw()
+local function draw_game_scene(underlay_draw)
   local screen = Screen.get_by_id(Context.game.current_screen)
   if not screen then return end
   if screen.background then
@@ -12,6 +10,9 @@ function GameWindow.draw()
   elseif screen.background_color then
     rect(0, 0, Config.screen.width, Config.screen.height, screen.background_color)
   end
+  if underlay_draw then
+    underlay_draw()
+  end
   if not Context.stat_screen_active and #_available_decisions > 0 then
     Decision.draw(_available_decisions, _selected_decision_index)
   end
@@ -20,6 +21,19 @@ function GameWindow.draw()
   screen.draw()
 end
 
+--- Draws the game window.
+--- @within GameWindow
+function GameWindow.draw()
+  draw_game_scene()
+end
+
+--- Draws the game window with a custom underlay.
+--- @within GameWindow
+--- @param underlay_draw function A draw callback rendered after the background but before overlays.<br/>
+function GameWindow.draw_with_underlay(underlay_draw)
+  draw_game_scene(underlay_draw)
+end
+
 --- Updates the game window logic.
 --- @within GameWindow
 function GameWindow.update()
@@ -31,12 +45,13 @@ function GameWindow.update()
   end
 
   local screen = Screen.get_by_id(Context.game.current_screen)
+  if not screen or not screen.update then return end
   screen.update()
 
   -- Handle current situation updates
   if Context.game.current_situation then
     local current_situation_obj = Situation.get_by_id(Context.game.current_situation)
-    if current_situation_obj and current_situation_obj.update then
+    if current_situation_obj and type(current_situation_obj.update) == "function" then
       current_situation_obj.update()
     end
   end