You can do this in folllowing manner.

1. Add a static routing table to aodv.h and popolate it manually in aodv.cc

2. Look for the the code in aodv.cc where a node actually forwading the received paket. That shoud be in "recv" fuction and it will look something like

forward((aodv_rt_entry*) 0, p, NO_DELAY);

3. The argumnet of the forward function "(aodv_rt_entry*)0" gives e pointer to the next hop.

You can comment this line and write you own something like this

forward(destination id from your routing table, p, NO_DELAY);

In summary you just have to change the next-hop id as per your routing table just before forwading the packet