/*
 * CSB Damage HUD
 * Copyright (C) 2026 counter-strike-boost.com
 *
 * Shows a short-lived floating damage number to the attacker every time a hit
 * lands (read from Ham_TakeDamage) and keeps a running total of the damage
 * dealt to the current victim in the corner of the screen. Each player can
 * turn it off for themselves with /dmghud.
 *
 * Inspired by the "Damage HUD" plugin by Alka. This is an independent GPL
 * re-implementation; no original code is reused.
 *
 * 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 the GNU General
 * Public License for more details: <https://www.gnu.org/licenses/>.
 */

#include <amxmodx>
#include <hamsandwich>

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

new bool:g_bEnabled[33] = { true, ... }
new g_iLastVictim[33]
new g_iRunningTotal[33]

new g_pEnabled

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

    g_pEnabled = register_cvar("csb_dmghud_enabled", "1")

    RegisterHam(Ham_TakeDamage, "player", "fwTakeDamage")

    register_event("HLTV", "eNewRound", "a", "1=0", "2=0")

    register_clcmd("say /dmghud", "cmdToggle")
    register_clcmd("say_team /dmghud", "cmdToggle")
    register_clcmd("csb_dmghud", "cmdToggle")
}

public client_putinserver(id)
{
    g_bEnabled[id] = true
    g_iLastVictim[id] = 0
    g_iRunningTotal[id] = 0
}

public eNewRound()
{
    for (new i = 1; i <= 32; i++)
    {
        g_iLastVictim[i] = 0
        g_iRunningTotal[i] = 0
    }
}

public cmdToggle(id)
{
    g_bEnabled[id] = !g_bEnabled[id]

    client_print(id, print_chat, "[CSB] Floating damage numbers are now %s.",
        g_bEnabled[id] ? "ON" : "OFF")

    return PLUGIN_HANDLED
}

public fwTakeDamage(victim, inflictor, attacker, Float:damage, damagebits)
{
    if (!get_pcvar_num(g_pEnabled))
        return HAM_IGNORED

    if (attacker < 1 || attacker > 32 || victim < 1 || victim > 32 || attacker == victim)
        return HAM_IGNORED

    if (!is_user_connected(attacker) || !g_bEnabled[attacker])
        return HAM_IGNORED

    new dmg = floatround(damage)

    if (dmg <= 0)
        return HAM_IGNORED

    /* running total resets when the attacker switches to a new victim */
    if (g_iLastVictim[attacker] != victim)
    {
        g_iLastVictim[attacker] = victim
        g_iRunningTotal[attacker] = 0
    }

    g_iRunningTotal[attacker] += dmg

    /* floating hit number, slightly randomised so successive hits do not overlap */
    new Float:x = 0.45 + random_float(-0.06, 0.06)
    new Float:y = 0.48 + random_float(-0.05, 0.05)

    set_hudmessage(255, 40, 40, x, y, 2, 0.02, 0.7, 0.02, 0.1, 4)
    show_hudmessage(attacker, "-%d", dmg)

    /* running total to the victim in the corner */
    new vname[32]
    get_user_name(victim, vname, charsmax(vname))

    set_hudmessage(255, 190, 40, 0.72, 0.20, 0, 0.0, 1.2, 0.05, 0.1, 5)
    show_hudmessage(attacker, "%s^n%d dmg total", vname, g_iRunningTotal[attacker])

    return HAM_IGNORED
}