I can provide you with a simplified example to help you understand the process. Please note that this is a basic illustration and not a fully functional routing protocol. Developing a robust and functional protocol requires a deep understanding of networking, NS$-3,$ and the specific requirements of your scenario.

#include $"$ns$3/$core$-$module.h$"$

#include $"$ns$3/$network$-$module.h$"$

#include $"$ns$3/$mobility$-$module.h$"$

#include $"$ns$3/$internet$-$module.h$"$

#include $"$ns$3/$applications$-$module.h$"$

#include $"$ns$3/$aodv$-$module.h$"$

#include $"$ns$3/$olsr$-$module.h$"$

using namespace ns$3$;

$//$ Define custom routing protocol type

enum RoutingProtocol $\{$

AODV,

OLSR

$\}$;

$//$ Structure to represent a routing table entry

struct RouteEntry $\{$

Ipv$4$Address dest;

Ipv$4$Address nextHop;

RoutingProtocol protocol; $//$ AODV or OLSR

$//...$ other information

$\}$;

std::vector routingTable;

$//$ Function to check if a node is within an AODV zone

bool isAODVZone$($Ptr node$)\{$

$//$ Check if node is within an AODV zone $($e$.$g$.,$ based on location$)$

$//...$ implementation

$\}$

$//$ Custom AODV RouteRequest

void customAODVRouteRequest$($Ptr source, Ipv$4$Address destAddress$)\{$

Ptr packet $=$ Create$()$;

Ipv$4$Header ipv$4$Header;

ipv$4$Header.SetSource$($source$->$GetObject$()->$GetAddress$(1,0).$GetLocal$())$;

ipv$4$Header.SetDestination$($destAddress$)$;

packet$->$AddHeader$($ipv$4$Header$)$;

packet$->$AddHeader$($AodvHeader$())$;

source$->$Send$($packet$)$;

$\}$

$//$ Custom AODV RouteReply

void customAODVRouteReply$($Ptr node, RouteEntry route$)\{$

Ptr reply $=$ Create$()$;

reply$->$AddHeader$($route$)$;

node$->$Send$($reply$)$;

$\}$

int main$()\{$

$//$ Create a node

Ptr node $=$ CreateObject$()$;

$//$ Set up mobility model

Ptr mobility $=$ CreateObject$()$;

node$->$AggregateObject$($mobility$)$;

$//$ Zone$-$Based Switching

if $($isAODVZone$($node$))\{$

$//$ Use AODV routing

customAODVRouteRequest$($node$,"192\mathrm{.}168\mathrm{.}1\mathrm{.}2")$;

$\}$ else $\{$

$//$ Use OLSR routing

$//...$ implement OLSR routing logic

$\}$

$//...$

return $0$;

$\}$ Can you complete this code. Also show me which part is hybrid for aodv, olsr vanet. needc full implementation code for ns $3\mathrm{.}36\mathrm{.}1$ and when you are finished aodv olsr routing protocols hybrid method. nned to measure packet delivery ratio, end to end delay, rthroughput, routing overhead. Also, i need implementation of these to$.$