You can create automatic doors that open when the player comes near them and close when the player goes away using the Event System.

To achieve this, we need two simple events that will move the door game object on Trigger Enter and Trigger Exit event interactions. In this tutorial, we’ll create an automatic door that slides up and down – you can create other doors the same way with a different event setup, e.g. sliding them sideways or use a Rotation Step to rotate them open instead.

Open door event

This event is used when the player enters the trigger of the door and will move the door upwards. The event and the door will be two separate objects, allowing us to use the event object as reference position for the door movement. Open the ORK Framework editor and navigate to Events. Click on New Game Event to create a new game event.

Event Settings

We need two actors, click on Add Actor to add the first actor.

Click on Add Actor again to add the 2nd actor.

Change Position

Add > Movement > Movement > Change Position

And that’s it for this event – click on Save Event and save it as doorUp in Assets/Events/Scene/.

Close door event

This event is used when the player exits the trigger of the door and will move the door back to the original position (i.e. the event’s position). Since this event is the same as the other except for one single setting, we’ll just edit the previous event and save it as a new event.

Change Position

Change the following setting.

And that’s it for this event – click on Save Event As … and save it as doorDown in Assets/Events/Scene/.

Scene setup

We’ll add a door to the entrance of the town, so open the town scene (1 Town, can be found in Assets/Tutorial Resources/Scenes/) and add an empty object to the scene using Unity’s menu: Game Object > Create Empty

Change the following settings.

Transform

Box Collider

Add a Box Collider component and change the following settings.

Now, create a new game object, this time it’ll be a Cube: Game Object > 3D Object > Cube

Make the new cube a child object of the Door Event game object by dragging it onto the event object in the scene hierarchy. Now change the following settings.

Transform

Door Up Interaction

Now, select the Door Event game object again and add an Event Interaction component.

Click on Ok and change the following settings in the interaction’s inspector.

Event Settings

Actor Settings

Door Down Interaction

Add another Event Interaction component.

Click on Ok and change the following settings in the interaction’s inspector.

Event Settings

Actor Settings

And that’s it – don’t forget to save the scene.

Now, when playing the game, the automatic door will open and close each time you enter or leave the town.

Tip: Restricting access