Physics

XR.js uses Physijs for physics simulation.

Physics can be configured when creating a Reality().

new XR.Reality({
   physics: true,         // default is true
   gravity: [0, -10, 0],  // downward gravity
});

Add a new object

new XR.Box({
   physics: true,
   gravity: -10,
   bounce: 1,
   friction: 1,
   mass: 100
});

Parameters

an object's physics can be configured with these parameters

Name	Type	Options	Default	Description
`physics`	bool		`true`	physics on or off
`bounce`	float		`0.5`	amount of bounce
`friction`	float		`0.5`	amount of friction
`mass`	int	> 0 (`0 is off`)	`1`	mass of object

We can turn physics on/off per object.

new XR.Box({
   physics: false   
});

if a single number, gravity will exist along the y axis

if an array, there can me multi-dimensional gravity [x_force,y_force,z_force]

if 0, object will be fixed in space (but other objects will still bounce off it)