Physics

Use

At this time, dlux does not use aframe-physics-system by Don McCurdy (GitHub Source) by default.

To create collisions with the ground, floor, and walls, we recommend a nav mesh to restrict player movement.

A nav mesh is an invisible floor that the player is allowed to move on. For example, if you do not want a player to walk through a wall, there should be a gap in the nav mesh so they are not permitted to move there.

This approach has better performance, and allows the use of glTF files with shapes more complex than primitive geometries, meaning your ground can be varied terrain, not just flat. Interaction with static and dynamic objects can be achieved with AABB Collider and SuperHands.

If you need physics, keep reading.

To use the physics system, you must attach body components to the entities you want to participate in the physics system:

static-body for the ground, floor, and walls
dynamic-body for anything that's moveable
kinematic-body for the camera rig (not required)

Each body requires a shape Ideally, we would use a model for our world, which would have varied terrain in a glTF format as we do with nav-mesh. Set its body type to static and its shape to mesh.

html

<!-- World -->
<a-entity gltf-model="navmesh.gltf"
          static-body="shape: mesh"
          nav-mesh></a-entity

Unfortunately, "shape: mesh" is depreciated, and does not work with the kinematic-body. Therefore, complex shapes are not supported, only simple geometries, like ramps, boxes, and spheres, where shape typically doesn't need to be defined, and the default is auto.

The big drawback to using the physics system is you can't have varied terrain for the floor because shape: mesh is depreciated. If your scene has a flat floor and you want to use physics, here's how:

Install

You will need:

A-Frame
A-Frame Extras
A-Frame Physics System
A-Frame Teleport Controls

html

<head>
<script src="https://aframe.io/releases/0.8.2/aframe.min.js"></script>
<script src="https://rawgit.com/donmccurdy/aframe-extras/master/dist/aframe-extras.js"></script>
<script src="https://cdn.rawgit.com/donmccurdy/aframe-physics-system/v3.3.0/dist/aframe-physics-system.min.js"></script>
<script src="https://rawgit.com/fernandojsg/aframe-teleport-controls/master/dist/aframe-teleport-controls.min.js"></script>
</head>

Add a static-body floor (primitives only)

html

<a plane id="floor" static-body height="20" width="20"></plane>

Add a kinematic-body camera rig

Physics ​

Use ​

Install ​

Physics

Use

Install