/*
 *        s_door.cc
 *        Make door from sector
 *        AYM 1998-02-03
 */


/*
This file is part of Yadex.

Yadex incorporates code from DEU 5.21 that was put in the public domain in
1994 by Raphaël Quinet and Brendon Wyber.

The rest of Yadex is Copyright © 1997-2003 André Majorel and others.

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.
*/


#include "yadex.h"
#include "dialog.h"
#include "levels.h"
#include "objid.h"
#include "selectn.h"


/*
   turn a sector into a door: change the linedefs and sidedefs
*/

void MakeDoorFromSector(int sector)        // SWAP!
{
    int sd1, sd2;
    int n, s;
    SelPtr ldok, ldflip, ld1s;

    ldok = NULL;
    ldflip = NULL;
    ld1s = NULL;
    s = 0;
// build lists of linedefs that border the sector
    for (n = 0; n < NumLineDefs; n++)
    {
        sd1 = LineDefs[n].sidedef1;
        sd2 = LineDefs[n].sidedef2;
        if (sd1 >= 0 && sd2 >= 0)
        {
            if (SideDefs[sd2].sector == sector)
            {
                SelectObject(&ldok, n);        // already ok
                s++;
            }
            if (SideDefs[sd1].sector == sector)
            {
                SelectObject(&ldflip, n);        // must be flipped
                s++;
            }
        }
        else if (sd1 >= 0 && sd2 < 0)
        {
            if (SideDefs[sd1].sector == sector)
                SelectObject(&ld1s, n);        // wall (one-sided)
        }
    }
// a normal door has two sides...
    if (s < 2)
    {
        Beep();
        Notify(-1, -1, "The door must be connected to two other Sectors.",
               NULL);
        ForgetSelection(&ldok);
        ForgetSelection(&ldflip);
        ForgetSelection(&ld1s);
        return;
    }
    if ((s > 2)
        && !(cfg.expert
             || Confirm(-1, -1, "The door will have more than two sides.",
                        "Do you still want to create it?")))
    {
        ForgetSelection(&ldok);
        ForgetSelection(&ldflip);
        ForgetSelection(&ld1s);
        return;
    }
// flip the linedefs that have the wrong orientation
    if (ldflip != NULL)
        FlipLineDefs(ldflip, 1);
// merge the two selection lists
    while (ldflip != NULL)
    {
        if (!IsSelected(ldok, ldflip->objnum))
            SelectObject(&ldok, ldflip->objnum);
        UnSelectObject(&ldflip, ldflip->objnum);
    }
// change the linedefs and sidedefs
    while (ldok != NULL)
    {
        // give the "normal door" type and flags to the linedef
        n = ldok->objnum;
        LineDefs[n].type = 1;
        LineDefs[n].flags = 0x04;
        sd1 = LineDefs[n].sidedef1;        // outside
        sd2 = LineDefs[n].sidedef2;        // inside
        // adjust the textures for the sidedefs
        if (strncmp(SideDefs[sd1].tex3, "-", WAD_TEX_NAME))
        {
            if (!strncmp(SideDefs[sd1].tex1, "-", WAD_TEX_NAME))
                strncpy(SideDefs[sd1].tex1, SideDefs[sd1].tex3, WAD_TEX_NAME);
            strncpy(SideDefs[sd1].tex3, "-", WAD_TEX_NAME);
        }
        if (!strncmp(SideDefs[sd1].tex1, "-", WAD_TEX_NAME))
            strncpy(SideDefs[sd1].tex1, "BIGDOOR2", WAD_TEX_NAME);
        strncpy(SideDefs[sd2].tex3, "-", WAD_TEX_NAME);
        UnSelectObject(&ldok, n);
    }
    while (ld1s != NULL)
    {
        // give the "door side" flags to the linedef
        n = ld1s->objnum;
        LineDefs[n].flags = 0x11;
        sd1 = LineDefs[n].sidedef1;
        // adjust the textures for the sidedef
        if (!strncmp(SideDefs[sd1].tex3, "-", WAD_TEX_NAME))
            strncpy(SideDefs[sd1].tex3, "DOORTRAK", WAD_TEX_NAME);
        strncpy(SideDefs[sd1].tex1, "-", WAD_TEX_NAME);
        strncpy(SideDefs[sd1].tex2, "-", WAD_TEX_NAME);
        UnSelectObject(&ld1s, n);
    }
// adjust the ceiling height
    Sectors[sector].ceilh = Sectors[sector].floorh;
}