As well as being able to show icons that tell us whether we have certain keys or not, we can also use the Hub Door component to generate a similar feature in the game, but applied differently:
The Hub Door component is designed to change the visual state of a sprite depending on which and how many items we have in our inventory. Let's take the Zone2 example:
The first time we get to the zone, the door state is completely inactive, as we can see in the previous screenshot. After we pick up the key, the ...
