{
if( v.getProperty( "pinned" ) == null || v.getProperty( "pinned" ).equals("false"))
{
difference.set( v.getForce() );
length = difference.length();
difference.normalize();
difference.dotProduct( Math.min( length, temperature ) );
v.move( difference, true, false );
// v.getPosition().setX( Math.min( width / 2.0f, Math.max(
// -width / 2.0f, v.getPosition().getX() ) ) );
// v.getPosition().setY( Math.min( height / 2.0f, Math.max(