the user should be able to select an item from the inventory bar by clicking on it
selecting the item will need a graphical indicator of the fact that it has been selected (a silhouette or a colored square behind the object inside the inventory bar)
after selecting the item, if the user clicks on something different than an interactable object on the scene, the selection should be removed
after selecting the item, if the user clicks on an interactable object, but the two objects are not meant to be used together, the game should display a text box with some kind of dialogue that suggest that the main character can't do anything with it (optional: give clear or semiclear suggestion of what the selected item should be, for example, the only object that should interact with a door is a key or a crowbar, stuff like that)
after selecting the item, if the user clicks on an interactable object, and the two objects are meant to be used together, perform an action, like for example removing objects from the scene, change the scene, removing items from the inventory, trigger a dialogue, etc
Acceptance criteria: