AddPlane pn1
        /Bounciness:1.0
        /IsKinematic:true
        /Position:0, -10, 0
        /Scale:5, 1, 5
void loop()
{
    x = random(-10, 11)
    y = random(-10, 11)
    z = random(-10, 11)
    AddSphere 
            /Position:{x}, {y}, {z}
            /Bounciness:1.0
}