This process is continued until the fruited tree is in sight of the troop. We assume
that the typical tree could be seen at a distance of 17 m from the tree. We also
assume that the troop cannot travel exactly in the direction it desires to go because
of the lack of suitable branches. So the chosen direction is modified in the model by
a small random angle.
Figure 28.1 shows that part of the model dealing with the location and movement
of the monkeys. Here, the state variables are the coordinates X and Y at which the
Fig. 28.1
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28 Monkey Travels