create space for app-specific settings

0001-on

@@ -15,4 +15,6 @@ on = {
   --   on.keychord_press (see keychord.lua in this repo)
   --   on.text_input (see love.textinput)
   --   on.key_release (see love.keyreleased)
+  --   on.load_settings(settings)  -- fan out settings table into any other global state
+  --   on.save_settings()  -- return a settings table which will be persisted to disk across restart
 }

main.lua

@@ -62,6 +62,7 @@ function settings()
   return {
     x=x, y=y, displayindex=displayindex,
     width=App.screen.width, height=App.screen.height,
+    app = on.save_settings and on.save_settings(),
   }
 end
 
@@ -77,6 +78,7 @@ function load_settings()
     App.screen.height = settings.height
     love.window.setMode(App.screen.width, App.screen.height, App.screen.flags)
     love.window.setPosition(settings.x, settings.y, settings.displayindex)
+    if on.load_settings then on.load_settings(settings.app) end
   else
     local font_height = 20
     love.graphics.setFont(love.graphics.newFont(font_height))