Try replacing a piece of code
PHP Code:
public fm_PlayerPreThink(player)
{
if (!is_user_alive(player) || !zp_get_user_zombie(id))
return FMRES_IGNORED
if (zp_get_user_zombie_class(player) != g_zclass_ai_zombie)
return FMRES_IGNORED
if (!(pev(id, pev_flags) & FL_DUCKING))
{
set_pev(id, pev_rendermode, kRenderNormal)
set_pev(id, pev_renderamt, 255.0)
new iRandomNum = random_num(zisA, zisB)
if (iRandomNum == zisA)
{
emit_sound(player, CHAN_VOICE, zombie_idle_sound1, VOL_NORM, ATTN_NORM, 0, PITCH_NORM)
}
else if (iRandomNum == zisB)
{
emit_sound(player, CHAN_VOICE, zombie_idle_sound2, VOL_NORM, ATTN_NORM, 0, PITCH_NORM)
}
}
else
{
set_pev(player, pev_rendermode, kRenderTransAlpha)
set_pev(player, pev_renderamt, get_pcvar_float(g_ai_zombie_invisible))
}
return FMRES_IGNORED
}
====>>>
PHP Code:
public fm_PlayerPreThink(id)
{
if (!is_user_alive(id) || !zp_get_user_zombie(id))
return FMRES_IGNORED
if (zp_get_user_zombie_class(id) != g_zclass_ai_zombie)
return FMRES_IGNORED
if (!(pev(id, pev_flags) & FL_DUCKING))
{
set_pev(id, pev_rendermode, kRenderNormal)
set_pev(id, pev_renderamt, 255.0)
new iRandomNum = random_num(zisA, zisB)
if (iRandomNum == zisA)
{
emit_sound(id, CHAN_VOICE, zombie_idle_sound1, VOL_NORM, ATTN_NORM, 0, PITCH_NORM)
}
else if (iRandomNum == zisB)
{
emit_sound(id, CHAN_VOICE, zombie_idle_sound2, VOL_NORM, ATTN_NORM, 0, PITCH_NORM)
}
}
else
{
set_pev(id, pev_rendermode, kRenderTransAlpha)
set_pev(id, pev_renderamt, get_pcvar_float(g_ai_zombie_invisible))
}
return FMRES_IGNORED
}