PhysicsJS - Collision between two bodies never ends

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0

I've got this simple js:

Physics(function( world ){

    //Defining object
    var renderer = Physics.renderer('canvas', {
        el: 'viewport', // id of the canvas element
        width: 500,
        height: 500
    });

    var ball = Physics.body('circle', {
        x: 250,
        y: 250,
        radius:10,
        restitution: .8,
        mass: 3,
        vx: 0
    });

    var box = Physics.body('rectangle', 
        {
            x: 250,
            y: 350,
            width: 50,
            height: 20,
            restituion:.5,
            treatment: "static"
        }
    );

    // Add them to the world
    world.add( renderer );
    world.add( ball );
    world.add( box );        

    //Add physical behaviours
    world.add( Physics.behavior('constant-acceleration') );//add gravity
    world.add( Physics.behavior('body-impulse-response') );//make obdies bounce (react to impulse)
    world.add( Physics.behavior('body-collision-detection') );//detect collision between bodies
    world.add( Physics.behavior('sweep-prune') );
    world.add( Physics.behavior('edge-collision-detection', //dectect collision with edges
            {
                aabb: Physics.aabb(0, 0, 500, 500),
                restitution:.3
            }
        )  
    );


    //START playing
    world.on('render', function( data ){
        var renderer = data.renderer;
    });

    // subscribe to ticker to advance the simulation
    Physics.util.ticker.on(function( time, dt ){
        world.step( time );
    });

    world.on('step', function(){
        world.render();
        console.log(ball.state.vel._[1]);
    });

    // start the ticker
    Physics.util.ticker.start();        

});

that creates a world with a static platform and a ball falling on it. Ball falls and bounces, then bouncing slows and slows but it never ends. I've setted restitution < 1 in the bodies attributes.

Where am I wrong?

asked 1 min ago

Nemus

41

PhysicsJS - Collision between two bodies never ends