}
protected PhysicsComponent setupPhysics(CollisionComponent physicsCC, PhysicsSystem physicsSystem, Node rootNode) {
if (physicsCC!=null && physicsCC instanceof JBulletCollisionComponent && physicsSystem instanceof JBulletPhysicsSystem) {
JBulletPhysicsComponent pc = ((JBulletPhysicsSystem)physicsSystem).createPhysicsComponent((JBulletCollisionComponent)physicsCC);
CellPhysicsPropertiesComponent prop = cell.getComponent(CellPhysicsPropertiesComponent.class);
if (prop!=null) {
PhysicsProperties phy = prop.getPhysicsProperties(CellPhysicsPropertiesComponent.DEFAULT_NAME);
if (phy!=null) {
System.err.println("---------------> setting mass on "+this);
pc.setMass(phy.getMass());
}
}