How do I simulate swarm movement of drones with ns-3? - ns-3

Question

First of all, I'm still an absolute beginner in ns-3. I am trying to simulate swarm movement of drones using ns-3. I've gotten some source codes/tutorial from youtube which is partly what I want. So far, the codes are simulating FANET(Flying Ad Hoc Network) together with a 3D Gauss Markov Mobility model. I'm thinking that maybe I can add to these codes to also simulate swarm movement together.
Problem is I don't know where to begin and also have not been able to find much resources online. Could someone maybe give some ideas as to what I should do or maybe provide relevant resources? I will attach the codes that I have right now.
Reference: https://www.nsnam.com/2020/11/flying-adhoc-network-simulation-fanet.html
#include "ns3/point-to-point-module.h"
#include "ns3/ipv4-global-routing-helper.h"
#include <fstream>
#include <string>
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/applications-module.h"
#include "ns3/mobility-module.h"
#include "ns3/config-store-module.h"
#include "ns3/wifi-module.h"
#include "ns3/aodv-helper.h"
#include "ns3/internet-module.h"
#include "ns3/netanim-module.h"
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("Mob");
int main (int argc, char *argv[])
{
CommandLine cmd;
cmd.Parse (argc, argv);
NodeContainer c;
c.Create (20); //20 wireless nodes
WifiHelper wifi;
wifi.SetStandard (WIFI_PHY_STANDARD_80211b);
//80211a, 80211b, 80211n, 2.4g and 5G, 80211ac, 80211ax is also supported.80211p (VANETs, WAVE)
WifiMacHelper mac;
mac.SetType ("ns3::AdhocWifiMac");
//AdhocWifiMac, StaWifiMac, ApWifiMac
wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
"DataMode", StringValue ("OfdmRate54Mbps"));
YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();
YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();
wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
wifiChannel.AddPropagationLoss ("ns3::FriisPropagationLossModel");
wifiPhy.SetChannel (wifiChannel.Create ());
NetDeviceContainer cDevices = wifi.Install (wifiPhy, mac, c);
//
NS_LOG_INFO ("Enabling AODV routing on all backbone nodes");
AodvHelper aodv;
//AODV protocol is being using FANETs.
InternetStackHelper internet;
internet.SetRoutingHelper (aodv); // has effect on the next Install ()
internet.Install (c);
//
// Assign IPv4 addresses to the device drivers (actually to the associated
// IPv4 interfaces) we just created.
//
Ipv4AddressHelper ipAddrs;
ipAddrs.SetBase ("192.168.0.0", "255.255.255.0");
Ipv4InterfaceContainer cInterfaces;
cInterfaces=ipAddrs.Assign (cDevices);
//Mobility Model -3D
MobilityHelper mobility;
mobility.SetMobilityModel ("ns3::GaussMarkovMobilityModel",
"Bounds", BoxValue (Box (0, 100, 0, 100, 0, 100)),
"TimeStep", TimeValue (Seconds (0.5)),
"Alpha", DoubleValue (0.85),
"MeanVelocity", StringValue ("ns3::UniformRandomVariable[Min=800|Max=1200]"),
"MeanDirection", StringValue ("ns3::UniformRandomVariable[Min=0|Max=6.283185307]"),
"MeanPitch", StringValue ("ns3::UniformRandomVariable[Min=0.05|Max=0.05]"),
"NormalVelocity", StringValue ("ns3::NormalRandomVariable[Mean=0.0|Variance=0.0|Bound=0.0]"),
"NormalDirection", StringValue ("ns3::NormalRandomVariable[Mean=0.0|Variance=0.2|Bound=0.4]"),
"NormalPitch", StringValue ("ns3::NormalRandomVariable[Mean=0.0|Variance=0.02|Bound=0.04]"));
mobility.SetPositionAllocator ("ns3::RandomBoxPositionAllocator",
"X", StringValue ("ns3::UniformRandomVariable[Min=0|Max=100]"),
"Y", StringValue ("ns3::UniformRandomVariable[Min=0|Max=100]"),
"Z", StringValue ("ns3::UniformRandomVariable[Min=0|Max=100]"));
mobility.Install (c);
UdpEchoServerHelper echoServer (9);
ApplicationContainer serverApps = echoServer.Install (c.Get(0));
serverApps.Start (Seconds (1.0));
serverApps.Stop (Seconds (10.0));
UdpEchoClientHelper echoClient (cInterfaces.GetAddress(0), 9);
echoClient.SetAttribute ("MaxPackets", UintegerValue (1));
echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));
echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
ApplicationContainer clientApps = echoClient.Install (c.Get(1));
clientApps.Start (Seconds (2.0));
clientApps.Stop (Seconds (10.0));
wifiPhy.EnablePcapAll ("Fanet3D"); //Packet Capture.
//Network Animation using NetAnim.
AnimationInterface anim("Fanet3D.xml");
//Ascii Trace Metrics can be processed using Tracemetrics Software.
AsciiTraceHelper ascii;
wifiPhy.EnableAsciiAll(ascii.CreateFileStream("Fanet3D.tr"));
Simulator::Stop (Seconds (10.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}