if (instance_exists(obj_mainchara))
{
    if (obj_mainchara.x < 440 || obj_mainchara.x > 460)
    {
        if (obj_mainchara.y > 526)
            obj_mainchara.y = 526;
    }
    if (obj_mainchara.x > 170 && obj_mainchara.y > 130 && obj_mainchara.x < (room_width - 170) && obj_mainchara.y < (room_height - 160) && lock == 0)
    {
        tone = caster_load("music/creepy_ambience.ogg");
        tone1 = caster_loop(mus_creepy_ambience, 0, 1.1);
        tone2 = caster_loop(mus_creepy_ambience, 0, 1);
        tone3 = caster_loop(mus_creepy_ambience, 0, 0.9);
        tonevol = 0;
        lock = 1;
    }
    else
    {
        if (obj_mainchara.x < 180)
            obj_mainchara.x = 180;
        if (obj_mainchara.x > (room_width - 180))
            obj_mainchara.x = room_width - 180;
        if (obj_mainchara.y < 170)
            obj_mainchara.y = 170;
    }
    if (lock == 1)
    {
        if (locktime >= 250)
        {
            tonevol = (locktime - 250) / 250;
            caster_set_volume(mus_creepy_ambience, tonevol);
        }
        obj_mainchara.x = room_width / 2;
        obj_mainchara.y = room_height / 2;
        if (obj_mainchara.moving == 1)
            locktime += 1;
        if (locktime >= 550)
        {
            caster_free(tone);
            snd_play(snd_noise);
            obj_mainchara.visible = false;
            global.interact = 1;
            alarm[4] = 90;
            lock = 2;
        }
    }
}