static void xyz_move_notify(object old_env)
{
mixed nx, ny, nz;
object common;
object new_env;
new_env = query_environment();
if (!old_env || !new_env) {
return;
}
common = THING_SUBD->query_common_container(old_env, new_env);
if (!common) {
nx = 0;
ny = 0;
nz = 0;
} else {
nx = query_x_position();
ny = query_y_position();
nz = query_z_position();
for (; old_env != common; old_env = old_env->query_environment()) {
nx += old_env->query_x_position();
ny += old_env->query_y_position();
nz += old_env->query_z_position();
}
for (; new_env != common; new_env = new_env->query_environment()) {
nx -= new_env->query_x_position();
ny -= new_env->query_y_position();
nz -= new_env->query_z_position();
}
}
set_x_position(nx);
set_y_position(ny);
set_z_position(nz);
}
}
if (!target) {
send_out("Oops, " + TEXT_SUBD->generate_brief_definite(exit) + " doesn't have a destination.\n");
return;
}
if (actor->query_property("is_immobile")) {
send_out("You're stuck like glue and can't move.\n");
return;
}
if (query_user()->query_class() >= 2) {
emit_from(actor, actor, " ", ({ "leave", "leaves" }), " through ", exit, ".");
actor->set_x_position(exit->query_x_position());
actor->set_y_position(exit->query_y_position());
actor->set_z_position(exit->query_z_position());
actor->move(target, 1);
} else {
int heavy, big;
if (!target->query_virtual()) {
if (actor->query_total_mass() > target->query_max_mass() - target->query_contained_mass()) {
heavy = 1;
}
if (actor->query_total_volume() > target->query_capacity() - target->query_contained_volume()) {
big = 1;
}
if (heavy) {
