/*
 * CSB Speedometer
 * Copyright (C) 2026 counter-strike-boost.com
 *
 * Shows the player's horizontal speed (units/s, from pev_velocity) as a live
 * HUD number, colours it against configurable thresholds, and tracks a KZ-style
 * peak speed for the current life. Refreshed on a short task and toggled per
 * player with say /speed.
 *
 * 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 <fakemeta>

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

new g_pEnabled, g_pMid, g_pFast, g_pShowPeak
new bool:g_bShow[33]
new Float:g_fPeak[33]
new g_iSync

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

    g_pEnabled  = register_cvar("csb_speed_enabled", "1")
    g_pMid      = register_cvar("csb_speed_mid", "300")
    g_pFast     = register_cvar("csb_speed_fast", "500")
    g_pShowPeak = register_cvar("csb_speed_peak", "1")

    register_clcmd("say /speed", "cmdToggle")
    register_clcmd("say_team /speed", "cmdToggle")

    register_event("ResetHUD", "eventSpawn", "b")

    g_iSync = CreateHudSyncObj()
    set_task(0.2, "taskSpeed", 0, _, _, "b")
}

public client_putinserver(id)
{
    g_bShow[id] = true
    g_fPeak[id] = 0.0
}

public cmdToggle(id)
{
    g_bShow[id] = !g_bShow[id]
    client_print(id, print_chat, "[CSB] Speedometer %s.", g_bShow[id] ? "enabled" : "disabled")
    return PLUGIN_HANDLED
}

public eventSpawn(id)
{
    g_fPeak[id] = 0.0
}

public taskSpeed()
{
    if (!get_pcvar_num(g_pEnabled))
        return

    new mid  = get_pcvar_num(g_pMid)
    new fast = get_pcvar_num(g_pFast)
    new bool:peak = get_pcvar_num(g_pShowPeak) != 0

    new players[32], num, id
    get_players(players, num, "a")

    for (new i = 0; i < num; i++)
    {
        id = players[i]

        if (!g_bShow[id])
            continue

        static Float:fVel[3]
        pev(id, pev_velocity, fVel)

        new Float:speed = floatsqroot(fVel[0] * fVel[0] + fVel[1] * fVel[1])
        new iSpeed = floatround(speed)

        if (speed > g_fPeak[id])
            g_fPeak[id] = speed

        new r = 0, g = 255, b = 0

        if (iSpeed >= fast)
        {
            r = 255
            g = 40
            b = 40
        }
        else if (iSpeed >= mid)
        {
            r = 255
            g = 200
            b = 0
        }

        set_hudmessage(r, g, b, -1.0, 0.82, 0, 0.0, 0.25, 0.0, 0.0, -1)

        if (peak)
            ShowSyncHudMsg(id, g_iSync, "%d u/s^nPeak: %d u/s", iSpeed, floatround(g_fPeak[id]))
        else
            ShowSyncHudMsg(id, g_iSync, "%d u/s", iSpeed)
    }
}