#include "wireless_comm_signal.hpp" #include "sim_time.hpp" WirelessCommSignal::WirelessCommSignal(const Location& location,    double dbStrength, double wavelength,    double transmitterGain, PacketPtr packet)    : Signal(location, dbStrength), m_packetPtr(packet),    m_wavelength(wavelength), m_transmitterGain(transmitterGain),    m_channelId(m_DEFAULT_CHANNEL_ID) {    assert(m_wavelength > 0.0);    assert(m_transmitterGain > 0.0);    assert(m_packetPtr.get() != 0); } WirelessCommSignal::WirelessCommSignal(const WirelessCommSignal& rhs)    : Signal(rhs), m_wavelength(rhs.m_wavelength),    m_transmitterGain(rhs.m_transmitterGain),    m_channelId(rhs.m_channelId) {    m_packetPtr = Packet::create(*rhs.m_packetPtr); } SignalPtr WirelessCommSignal::clone() const {    SignalPtr p(new WirelessCommSignal(*this));    return p; } SimTime WirelessCommSignal::getDuration() const {    ConstPacketPtr packet = getPacketPtr();    assert(packet.get() != 0);    return packet->getDuration(); }