This is how to make a Gold HUD with a scripted Window. No scripting needed, just a single common event (per HUD) and two switches (per HUD). I will provide an example of a Gold_Window HUD.
Can be used with ANY type of HUD, more examples of other HUDs in the Demo attached.
Get two switches ready. Call 'em what you want.
Switch 1: Gold_HUD
Switch 2: Gold_HUD Check
Make a new common event, make it parralel process and make the trigger switch Switch 1.
Make a conditional branch now.
Conditonal Branch: Switch 2 = OFF (no else handler).
Now type THIS in a call script command:
@gold_window = Window_Gold.new
@gold_window.x = 0
@gold_window.y = 416
After the End Branch, make a loop command.
Inside it, type the following in a Call Script command:
@gold_window.update
DONE! I made using a normal event, so tell me if it doesn't work with a Common Event...