Interactive items

Simple interaction can be added to your program by using InteractiveItem.tscn scene. It represents an object that can be activated, for example a switch on a wall or a button on a keyboard.

There are 3 types of iteractive items:

• NORMAL: can be activated multiple times, e.g. a door that opens and closes
• SINGLE_USE: can be activated only once, e.g. a rock pushed from a cliff
• INVENTORY: activating it removes the interactive item and adds an inventory item

Interactive item contains a collision shape that is detected by raycasts. A default collision shape is provided, but you can easily change it. You can also configure sounds that will be played randomly when the item is activated.

Note: interactive items don’t have any visible elements by default. If you want to associate them with a 3D model, add a mesh as interactive item’s child. You can also use models added elsewhere, but it will not work correctly with INVENTORY items (which should be removed after activation).

When an interactive item is in range (that is: close enough and in front of the camera or under the mouse cursor) it will be selected. This state is indicated by an interaction icon:

When an item is selected, LMB click will activate it. RMB click will call an alternative activation, which for INVENTORY type items works like normal activation (the item will be picked up), and for other items shows the context inventory screen.

Interactive items work both in the environment and in the inventory, however, in inventory mode alternative activation is not supported.

Each interactive item should have a unique name, which will be used to send signals (more about it later). Moreover, for INVENTORY items you need to configure the name of the inventory item that will be added after interactive item is activated (inventory items configuration will be explained later).