Taking Our Game to the Next Level - jMonkeyEngine 3.0 - page 467

How it works...
The InteractionTrigger instance has several things in common with Enter-
ableTrigger , which we created in the Creating a trigger system recipe, and it also has a
new functionality. Rather than firing the trigger as soon as the player enters it, it sets the
inside flag, which defines whether it's possible to interact with it or not. It also displays
a text on the GUI for the player.
Once the InteractionTrigger receives a call to its onAction method from In-
putManager , it checks whether inside is true and calls trigger . To brush up your
knowledge on how input is handled, check out Chapter 2 , Cameras and Game Control .