/**
 * @(#) $RCSfile: HandLoop.as,v $ $Revision: 1.6 $ $Date: 2003/03/05 19:52:16 $
 *
 * Copyright 2003 Orgdot AS. All Rights Reserved.
 * http://dev.swfit.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/**
 * Loop script for the ACGT dispenser.
 *
 * @author      Olaf Havnes
 * @version     $Revision: 1.6 $ $Date: 2003/03/05 19:52:16 $
 * @since       SWFIT1.0
 */

if (dragging)
{
    // Implement the mouse interface.
    xp += /:change_mouse_x;
    xv = /:change_mouse_x;
    // Set the lock point to the closest lock point
    pos_lock = int ( (xp - x_min) / pos_wdt);
    gap = xp - x_min - pos_lock * pos_wdt;
    if (gap > pos_hlf) pos_lock += 1;

}
else
{
    // Implement the keyboard interface.
    xd = (x_min + pos_lock * pos_wdt) - xp;

    // Compute the speed based on distance we have to travel.
    xv += ac * xd - fr * xv;

    // Set the new x pos.
    xp += xv;
}

// If we hit a wall, reverse the speed
if (xp < x_min)
{
    xv = - xv;
    xp = 2 * x_min - xp;
}
else if (xp > x_max)
{
    xv = - xv;
    xp = 2 * x_max - xp;
}

// Are we close to a lock pos ?
x_lock = x_min + pos_lock * pos_wdt;
if ((xp - x_lock) * (xp - x_lock) < 0.5)
{
    xp = x_lock;
    if (drop_init && xv * xv < 0.5 && eval ("../:drag_name") ne "")
    {
        // We are at rest, and the drop button has been pressed
        drop_init = false;
        drop_done = true;
        
        // Mark the drag piece with our lock pos
        set ("../" add eval ("../:drag_name") add ":pos_lock", pos_lock + 1);

        // Play a "droppy" sound
        /:drop_acgt_audio_play ++;
    }
}
_x = int (xp);

if (drop_drag)
{
    if (eval ("../:drag_name") ne "")
    setProperty ("../" add eval ("../:drag_name"), _x, int (xp) + piece_shift);
}