public void setPhysicsDamping(float physicsDamping) {
        this.physicsDamping = physicsDamping;
    }
Alter how much motion in the local X-Z plane is damped.

@param physicsDamping the desired damping factor (0&rarr;no damping, 1=no
external forces, default=0.9)
jme3-jbullet/src/main/java/com/jme3/bullet/control/BetterCharacterControl.java