From the terrain editor you can drag & drop modules from the assets tab to create the terrain.

You can then add custom objects or enemies in the scene.

When you generate the project, it will generate html and javascript code that you can customize for your need.

It has built-in collision detect for the terrain: simply click on the cardboard button, and you will start/stop to move to the direcction you are looking. You can go up/down staircases, and it will detect collision with walls. You can also add primitives in the scene, and change the material to make it invisible, the collision will still work.

It has also built-in detect with objects so you have only to customize the onclicked method  wich will be called when the user clicks on the cardboard button while targeting the objects.

In the object's or enemy editor, you can define multiples "states" and associate models/animation on them. when you change from the code the object's state, the engine will automaticaly play the defined animation

test example at https://slashio.codinfinity.net/vr3

documentation is comming soon