Collision settings are fairly easy to get started with. There are three classes of intersection for collisions:
- Ignore: Collisions that pass through each other without any notification.
- Overlap: Collisions that trigger the OnBeginOverlap and OnEndOverlap events. Interpenetration of objects with an Overlap setting is allowed.
- Block: Collisions that prevent all interpenetration, and prevent objects from overlapping each other at all.
Objects are classed into one of many Object Types. The Collision settings for a particular Blueprint's Component allow you to class the object as an Object Type of your choice, as well as specify how that object collides with all other objects of all other types. This takes a tabular format in the Details | Collision section of the Blueprint Editor.
For example, the following screenshot shows the Collision settings for a character's CapsuleComponent:
