bbPress.org

The simplest and most straight forward solution is to work out what you want to do, and code that directly.

In this case:

<?php

if ( is_user_logged_in() || bb_is_user_logged_in() ) {

// Logged in user

// Hardcode your form here

} else {

// Not logged in

// Hardcode your form here

}

?>

You cannot call bb_is_user_logged_in() without prior inclusion of bb-load.php, though…