/*
    tws_t5_afk.gsc — .afk / .back chat toggle. Owns the [AFK] indicator element.
    Chat uses level waittill("say") — callbackPlayerSay never fires on T5 SP
    dedicated (see NOTES.md).
*/

#include maps\_utility;
#include common_scripts\utility;

init()
{
    if (GetDvar(#"zombiemode") != "1")
        return;

    scripts\sp\tws_t5_common::ensure_config();
    scripts\sp\tws_t5_common::register_help_command(".afk", "Pause with protection");
    scripts\sp\tws_t5_common::register_help_command(".back", "Return from AFK");

    afk_init();

    scripts\sp\tws_t5_common::register_spawn_handler(::afk_spawn);
}

afk_init()
{
    level.afk_grace_seconds = 2;    // invuln tail on .back

    level thread afk_chat_listener();
}

afk_chat_listener()
{
    for (;;)
    {
        level waittill("say", message, player);

        if (!isDefined(player) || !isDefined(message))
            continue;

        cmd = toLower(message);

        if (cmd == ".afk")
            player thread afk_enter();
        else if (cmd == ".back")
            player thread afk_exit();
    }
}

afk_spawn()
{
    self endon("disconnect");

    afk = scripts\sp\tws_t5_common::make_panel_text(
        self, level.hud_pad, level.hud_row_afk,
        "left", level.hud_font_afk, level.hud_c_afk);
    afk SetText("[AFK]");
    afk.alpha = 0;
    self.hud_afk_elem = afk;

    elems = [];
    elems[elems.size] = afk;
    self thread scripts\sp\tws_t5_common::destroy_on_disconnect(elems);
}

afk_enter()
{
    self endon("disconnect");

    if (is_true(self.hud_afk_on))
        return;

    self.hud_afk_on = true;
    self.ignoreme   = true;    // filters new targeting decisions (1-3s aggro drop)
    self enableInvulnerability();
    self freezeControls(true);

    if (isDefined(self.hud_afk_elem))
        self.hud_afk_elem.alpha = 1;

    self iPrintLnBold("AFK — type .back to return");
}

afk_exit()
{
    self endon("disconnect");

    if (!is_true(self.hud_afk_on))
        return;

    self.hud_afk_on = false;
    self freezeControls(false);

    if (isDefined(self.hud_afk_elem))
        self.hud_afk_elem.alpha = 0;

    self iPrintLnBold("Back in the fight");

    // grace tail: keep invuln through the wait so zombies don't re-acquire
    // and swing while controls are un-freezing
    wait level.afk_grace_seconds;

    if (!is_true(self.hud_afk_on))
    {
        self.ignoreme = false;
        self disableInvulnerability();
    }
}