Matter.js for Meta Spark

This is a fork of the Matter.js 2D physics library for use in Meta Spark projects.

Usage

Just drop build/matter.js into your Spark AR project. Note that the Runner and Renderer classes have been removed from this build. You need to implement your own runner and update the objects in the Spark world according to the positions of your bodies.

Example

const fps = 1000 / 30;
const engine = Engine.create({ ... your engine options here ... });

// the scene objects you want to simulate
const sparkBodies = [ ... ];

Time.ms.monitor().subscribe(evt => {

  const deltaTime = (evt.newValue - evt.oldValue);
  update(deltaTime);

});

function update(deltaTime) {

  // update world
  Engine.update(engine, fps);

  // now move the Spark bodies
  sparkBodies.forEach(obj => {
    obj.update(deltaTime);
  });
}