/*
 * CSB Fireworks
 * Copyright (C) 2026 counter-strike-boost.com
 *
 * Fires a short fireworks show - timed bursts of TE_EXPLOSION and TE_SPARKS
 * tempents at random points above the players, each with an explosion sound -
 * automatically at round end (a match/holiday celebration) or on the admin
 * command amx_fireworks.
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version. It is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See <https://www.gnu.org/licenses/> for details.
 */

#include <amxmodx>
#include <amxmisc>
#include <fun>

new const PLUGIN[] = "CSB Fireworks"
new const VERSION[] = "1.0.0"
new const AUTHOR[]  = "counter-strike-boost.com"

#define SVC_TEMPENTITY 23
#define TE_EXPLOSION   3
#define TE_SPARKS      9

new g_iExploSpr
new g_pEnabled, g_pRoundEnd, g_pBursts

public plugin_precache()
{
    g_iExploSpr = precache_model("sprites/zerogxplode.spr")
    precache_sound("weapons/explode3.wav")
}

public plugin_init()
{
    register_plugin(PLUGIN, VERSION, AUTHOR)

    g_pEnabled  = register_cvar("csb_fw_enabled", "1")
    g_pRoundEnd = register_cvar("csb_fw_roundend", "1")
    g_pBursts   = register_cvar("csb_fw_bursts", "10")

    register_concmd("amx_fireworks", "cmdFireworks", ADMIN_LEVEL_A, "- launch a fireworks show")
    register_logevent("eventRoundEnd", 2, "1=Round_End")
}

public eventRoundEnd()
{
    if (get_pcvar_num(g_pEnabled) && get_pcvar_num(g_pRoundEnd))
        startShow()
}

public cmdFireworks(id, level, cid)
{
    if (!cmd_access(id, level, cid, 1))
        return PLUGIN_HANDLED

    if (!get_pcvar_num(g_pEnabled))
    {
        console_print(id, "[CSB] Fireworks are disabled (csb_fw_enabled 0).")
        return PLUGIN_HANDLED
    }

    new aname[32]
    if (id)
        get_user_name(id, aname, charsmax(aname))
    else
        copy(aname, charsmax(aname), "CONSOLE")

    log_amx("[CSB Fireworks] %s launched a show", aname)
    startShow()

    return PLUGIN_HANDLED
}

startShow()
{
    new bursts = get_pcvar_num(g_pBursts)
    if (bursts < 1)
        bursts = 1
    if (bursts > 40)
        bursts = 40

    for (new i = 0; i < bursts; i++)
        set_task(0.3 * float(i) + 0.1, "taskBurst")
}

public taskBurst()
{
    new players[32], num
    get_players(players, num, "c")

    new x, y, z

    if (num)
    {
        new origin[3]
        get_user_origin(players[random_num(0, num - 1)], origin)
        x = origin[0] + random_num(-300, 300)
        y = origin[1] + random_num(-300, 300)
        z = origin[2] + random_num(160, 420)
    }
    else
    {
        x = random_num(-500, 500)
        y = random_num(-500, 500)
        z = random_num(200, 500)
    }

    /* the burst */
    message_begin(MSG_BROADCAST, SVC_TEMPENTITY)
    write_byte(TE_EXPLOSION)
    write_coord(x)
    write_coord(y)
    write_coord(z)
    write_short(g_iExploSpr)
    write_byte(random_num(15, 30))   // scale
    write_byte(20)                   // framerate
    write_byte(2)                    // flags: no sound, no smoke (we handle sound)
    message_end()

    /* extra sparkle */
    message_begin(MSG_BROADCAST, SVC_TEMPENTITY)
    write_byte(TE_SPARKS)
    write_coord(x)
    write_coord(y)
    write_coord(z)
    message_end()

    /* boom for everyone */
    new pid
    for (new i = 0; i < num; i++)
    {
        pid = players[i]
        emit_sound(pid, CHAN_STATIC, "weapons/explode3.wav", 0.6, ATTN_NORM, 0, random_num(90, 120))
    }
}