cannon-es-control
Version:
A lightweight 3D physics engine written in JavaScript with control system tools
67 lines (54 loc) • 2.14 kB
HTML
<html lang="en">
<head>
<meta charset="utf-8" />
<title>cannon.js - events demo</title>
<link rel="stylesheet" href="css/style.css" type="text/css" />
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0" />
</head>
<body>
<script type="module">
import * as CANNON from '../dist/cannon-es-control.js'
import { Demo } from './js/Demo.js'
/**
* For demonstrating events.
*/
const demo = new Demo()
demo.addScene("'collide' event", function () {
const world = setupWorld(demo)
const size = 1
// Sphere
const sphere = new CANNON.Sphere(size)
const sphereBody = new CANNON.Body({ mass: 30 })
sphereBody.addShape(sphere)
sphereBody.position.set(0, size * 6, 0)
world.addBody(sphereBody)
demo.addVisual(sphereBody)
// When a body collides with another body, they both dispatch the "collide" event.
sphereBody.addEventListener('collide', (event) => {
console.log('The sphere just collided with the ground!')
console.log('Collided with body:', event.body)
console.log('Contact between bodies:', event.contact)
})
})
demo.start()
function setupWorld(demo) {
const world = demo.getWorld()
world.gravity.set(0, -20, 0)
// Tweak contact properties.
// Contact stiffness - use to make softer/harder contacts
world.defaultContactMaterial.contactEquationStiffness = 5e7
// Stabilization time in number of timesteps
world.defaultContactMaterial.contactEquationRelaxation = 4
// Static ground plane
const groundShape = new CANNON.Plane()
const groundBody = new CANNON.Body({ mass: 0 })
groundBody.addShape(groundShape)
groundBody.quaternion.setFromEuler(-Math.PI / 2, 0, 0)
world.addBody(groundBody)
demo.addVisual(groundBody)
return world
}
</script>
</body>
</html>