How I am pausing the physics engine

PhysicEngine-pausing.js

function pause() {
    FamousEngine.renderLoop.stop();
    _SceneTwo.paused = true;
}

function resume() {
    FamousEngine.renderLoop.start();
    _SceneTwo.paused = false;
}


var updateLoop = appNode.addComponent({
    state: 'running',
    timeLastPaused: null,
    timeAfterPaused: null,

    onUpdate: function(time) {
        if (_SceneTwo.paused && this.state == 'running') {
            this.timeLastPaused = clock.getTime();
            this.state = 'paused';
        }

        if (_SceneTwo.paused && this.state != 'running') {
            this.timeAfterPaused = time;
        }

        if (!_SceneTwo.paused && this.state != 'running') {
            this.state = 'running';
        }



        if (this.timeLastPaused != null && this.timeAfterPaused != null) {
            time = this.timeLastPaused + (time - this.timeAfterPaused);
        }

        if (!_SceneTwo.paused) {
            _SceneTwo.world.update(time);
            //.. do logic stuff here
        }
        FamousEngine.requestUpdateOnNextTick(this);
    }
});