                        name: 'Gravity',
                        min: -10,
                        max: 10,
                        step: 0.1,
                        value: -gravity.y,
                        callback: value => {
                            gravity.y = -value;
                            physics.setGravity(gravity);
                        }
                    },
                    {
                        type: 'divider'
                    },
                    {
                    