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Simple Onscreen Inventory

This code adds a simple, items only inventory that will remain onscreen until you set $ showitems = False .

init python:   
    showitems = True
   
    def display_items_overlay():
        if showitems:
            inventory_show = "Inventory: "
            for i in range(0, len(items)):
                item_name = items[i].title()
                if i > 0:
                    inventory_show += ", "
                inventory_show += item_name
            ui.frame()
            ui.text(inventory_show)
    config.overlay_functions.append(display_items_overlay)

##
$ items.append("stone") #when you want to add items
$ items.remove("stone")#when you want to remove items
$ showitems = False #when you don't want to show the inventory onscreen (cutscenes and the like)
$ showitems = True #when you want to reshow the inventory after the cutscene is over

Money/Affection

With some adaptation, we can also use this code to display the current amount of money, or display an "Affection Meter" for a romantic interest.

init python:
    showaffection= False
    affection = 0
    def display_affection():
        if showaffection:   
            ui.frame() #This is optional. It adds a frame around the text.
            ui.text("Affection: %d" %affection)
    config.overlay_functions.append(display_affection)

###

$ showaffection = False #Hides the Affection box thing
$ affection +=5 #This adds 5 affection to the current score
$ affection -=5 #Likewise, this subtracts 5 affection from the current score

An onscreen money system is virtually the same.

init python:
    showmoney= False
    money = 0
    def display_affection():
        if showmoney:   
            ui.frame() #This is optional. It adds a frame around the text.
            ui.text("$ %d" %money)
    config.overlay_functions.append(display_money)

###

$ showmoney = False #Hides the Money box thing
$ money +=5 #This adds $5 to the current score
$ money -=5 #Likewise, this subtracts $5 from the current score