public void OnPluginStart()
{
    HookEvent("player_hurt", Player_Life);
}

public Action Player_Life(Handle event, const char[] name, bool dontBroadcast)
{
    int attacked = GetClientOfUserId(GetEventInt(event, "userid"));
    int iLife = GetClientHealth(attacked);

    if (!IsClientInGame(attacked))
    {
        PrintToChat(attacked, "Rejoins les T ou CT");
        return Plugin_Handled;
    }
    else if(IsClientInGame(attacked))
    {
        SetHudTextParams(0.043, -1.0, 1000.0, 5, 200, 255, 50, 2, 6.0, 0.1, 0.1);
        ShowHudText(attacked, -1, "HP: %s", iLife);

        return Plugin_Handled;
    }

    return Plugin_Continue;
}