You should have the following files:

README
active.tu
animal.tu
ftree.tu
herbivor.tu
location.tu
main.t
mountain.tu
mouse.tu
object.tu
plain.tu
pq.tu
refresh.tu
set.tu
simvar.tu
stats.tu
terrain.tu
water.tu
world.tb
world.ti

To run the simulation:
   1. start up oot
   2. load main.t
   3. run it.

It will output several files:
   ftreeX.out  - family trees ( 1 <= X <= # of initial herbivores )
   stats.out   - some statistics

Modify the variables in simvar.tu to see some changes.