finddpos
static coord finddpos(int, int, int, int);
cc = finddpos(xx, croom->ly, xx, croom->hy);
tt = finddpos(tx, troom->ly, tx, troom->hy);
cc = finddpos(croom->lx, yy, croom->hx, yy);
tt = finddpos(troom->lx, ty, troom->hx, ty);
cc = finddpos(xx, croom->ly, xx, croom->hy);
tt = finddpos(tx, troom->ly, tx, troom->hy);
cc = finddpos(croom->lx, yy, croom->hx, yy);
tt = finddpos(troom->lx, ty, troom->hx, ty);
dd = finddpos(aroom->lx, aroom->hy + 1, aroom->hx, aroom->hy + 1);
dd = finddpos(aroom->lx, aroom->ly - 1, aroom->hx, aroom->ly - 1);