//
// P_FindNextLowestFloor()
//
// Passed a sector and a floor height, returns the fixed point value
// of the largest floor height in a surrounding sector smaller than
// the floor height passed. If no such height exists the floorheight
// passed is returned.
//
// jff 02/03/98 Twiddled Lee's P_FindNextHighestFloor to make this
//
fixed_t sector_t::FindNextLowestFloor (vertex_t **v) const
{
fixed_t height;
fixed_t heightdiff;
fixed_t ofloor, floor;
sector_t *other;
vertex_t *spot;
line_t *check;
int i;
if (linecount == 0) return GetPlaneTexZ(sector_t::floor);
spot = lines[0]->v1;
height = floorplane.ZatPoint (spot);
heightdiff = FIXED_MAX;
for (i = 0; i < linecount; i++)
{
check = lines[i];
if (NULL != (other = getNextSector (check, this)))
{
if (other - sectors == 6)
other = other;
ofloor = other->floorplane.ZatPoint (check->v1);
floor = floorplane.ZatPoint (check->v1);
if (ofloor < floor && floor - ofloor < heightdiff && !IsLinked(other, false))
{
heightdiff = floor - ofloor;
height = ofloor;
spot = check->v1;
}
ofloor = other->floorplane.ZatPoint (check->v2);
floor = floorplane.ZatPoint (check->v2);
if (ofloor < floor && floor - ofloor < heightdiff && !IsLinked(other, false))
{
heightdiff = floor - ofloor;
height = ofloor;
spot = check->v2;
}
}
}
if (v != NULL)
*v = spot;
return height;
}
//
// P_FindNextLowestCeiling()
//
// Passed a sector and a ceiling height, returns the fixed point value
// of the largest ceiling height in a surrounding sector smaller than
// the ceiling height passed. If no such height exists the ceiling height
// passed is returned.
//
// jff 02/03/98 Twiddled Lee's P_FindNextHighestFloor to make this
//
fixed_t sector_t::FindNextLowestCeiling (vertex_t **v) const
{
fixed_t height;
fixed_t heightdiff;
fixed_t oceil, ceil;
sector_t *other;
vertex_t *spot;
line_t *check;
int i;
if (linecount == 0) return GetPlaneTexZ(sector_t::ceiling);
spot = lines[0]->v1;
height = ceilingplane.ZatPoint (spot);
heightdiff = FIXED_MAX;
for (i = 0; i < linecount; i++)
{
check = lines[i];
if (NULL != (other = getNextSector (check, this)))
{
oceil = other->ceilingplane.ZatPoint (check->v1);
ceil = ceilingplane.ZatPoint (check->v1);
if (oceil < ceil && ceil - oceil < heightdiff && !IsLinked(other, true))
{
heightdiff = ceil - oceil;
height = oceil;
spot = check->v1;
}
oceil = other->ceilingplane.ZatPoint (check->v2);
ceil = ceilingplane.ZatPoint (check->v2);
if (oceil < ceil && ceil - oceil < heightdiff && !IsLinked(other, true))
{
heightdiff = ceil - oceil;
height = oceil;
spot = check->v2;
}
}
}
if (v != NULL)
*v = spot;
return height;
}
//
// P_FindLowestFloorSurrounding()
// FIND LOWEST FLOOR HEIGHT IN SURROUNDING SECTORS
//
fixed_t sector_t::FindLowestFloorSurrounding (vertex_t **v) const
{
int i;
sector_t *other;
line_t *check;
fixed_t floor;
fixed_t ofloor;
vertex_t *spot;
if (linecount == 0) return GetPlaneTexZ(sector_t::floor);
spot = lines[0]->v1;
floor = floorplane.ZatPoint (spot);
for (i = 0; i < linecount; i++)
{
check = lines[i];
if (NULL != (other = getNextSector (check, this)))
{
ofloor = other->floorplane.ZatPoint (check->v1);
if (ofloor < floor && ofloor < floorplane.ZatPoint (check->v1))
{
floor = ofloor;
spot = check->v1;
}
ofloor = other->floorplane.ZatPoint (check->v2);
if (ofloor < floor && ofloor < floorplane.ZatPoint (check->v2))
{
floor = ofloor;
spot = check->v2;
}
}
}
if (v != NULL)
*v = spot;
return floor;
}
//
// FIND HIGHEST CEILING IN THE SURROUNDING SECTORS
//
fixed_t sector_t::FindHighestCeilingSurrounding (vertex_t **v) const
{
fixed_t height;
fixed_t oceil;
sector_t *other;
vertex_t *spot;
line_t *check;
int i;
if (linecount == 0) return GetPlaneTexZ(sector_t::ceiling);
spot = lines[0]->v1;
height = FIXED_MIN;
for (i = 0; i < linecount; i++)
{
check = lines[i];
if (NULL != (other = getNextSector (check, this)))
{
oceil = other->ceilingplane.ZatPoint (check->v1);
if (oceil > height)
{
height = oceil;
spot = check->v1;
}
oceil = other->ceilingplane.ZatPoint (check->v2);
if (oceil > height)
{
height = oceil;
spot = check->v2;
}
}
}
if (v != NULL)
*v = spot;
return height;
}