#include sdktools

#define L4D2_WEPUPGFLAG_LASER  (1 << 2)

static int bHasLaser[MAXPLAYERS+1] = 0;
public void OnMapStart()
{
    decl String:map[128];
    GetCurrentMap(map, 128);
    if (StrContains(map, "m1", false) != -1)
    {
        for(int i = 1; i <= MaxClients; ++i)
        {
            bHasLaser[i] = 0;
        }
    }
}

public void OnPluginStart()
{
    RegConsoleCmd("sm_l", CmdLaserToggle);
    HookEvent("player_death", PlayerLoseLaser);
}

public Action PlayerLoseLaser(Event event, const char[] name, bool dontBroadcast)
{
    int death = GetClientOfUserId(event.GetInt("userid"));
    bHasLaser[death] = 0;
}

public Action:CmdLaserToggle(client, args)
{
    new priWeapon = GetPlayerWeaponSlot(client, 0);
    if (priWeapon <= 0 || !IsValidEntity(priWeapon))
    return;

    new upgrades = L4D2_GetWeaponUpgrades(priWeapon);
    if (upgrades & L4D2_WEPUPGFLAG_LASER)
    {
        if (bHasLaser[client])
        {
            PrintHintText(client, "Зачем тебе ещё 1 лазер?");
        }
        CheatCommand(client, "upgrade_remove", "LASER_SIGHT");
        bHasLaser[client]++;
        PrintHintText(client, "Лазер снят.");
    }
    if (upgrades != L4D2_WEPUPGFLAG_LASER)
    {
        if (bHasLaser[client] == 1)
        {
            CheatCommand(client, "upgrade_add", "LASER_SIGHT");
            bHasLaser[client] = 0;
            PrintHintText(client, "Лазер установлен.");
        }
        PrintHintText(client, "У тебя нету лазера.");
    }
}

stock L4D2_GetWeaponUpgrades(weapon)
{
    return GetEntProp(weapon, Prop_Send, "m_upgradeBitVec");
}

stock CheatCommand(client, const String:command[], const String:arguments[])
{
    if (!client) return;
    new admindata = GetUserFlagBits(client);
    SetUserFlagBits(client, ADMFLAG_ROOT);
    new flags = GetCommandFlags(command);
    SetCommandFlags(command, flags & ~FCVAR_CHEAT);
    FakeClientCommand(client, "%s %s", command, arguments);
    SetCommandFlags(command, flags);
    SetUserFlagBits(client, admindata);
}