public void setDuckedFactor(float factor) {
        duckedFactor = factor;
    }
Alter the height multiplier for ducking.

@param factor the factor by which the height should be multiplied when
ducking (&ge;0, &le;1)
jme3-jbullet/src/main/java/com/jme3/bullet/control/BetterCharacterControl.java