if (active == 1)
{
    if (global.inv < 0)
    {
        instance_create_ch1(0, 0, obj_shake_ch1);
        snd_stop_ch1(snd_hurt1_ch1);
        snd_play_ch1(snd_hurt1_ch1);
        global.inv = global.invc * 40;
        for (i = 0; i < 3; i += 1)
        {
            temphp[i] = global.hp[global.char[i]];
            if (temphp[i] < 0)
                temphp[i] = 0;
        }
        if ((ceil(temphp[0] + temphp[1] + temphp[2]) / 3) >= 10)
        {
            for (i = 0; i < 3; i += 1)
            {
                if (temphp[i] > 0)
                    global.hp[global.char[i]] = ceil(global.hp[global.char[i]] * 0.7);
            }
        }
        else
        {
            scr_damage_all_ch1();
        }
    }
}