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CHAPTER 7 ■ NAVIGATION 269

While moving inside the regions is no problem since we have been doing that, it’s navi-
gating from region to region inside the same room that we have not done. To help me with that,
I’ll create a new object called, simply enough, Room.
A Room will connect and orient all the regions in it relative to one another. I will do this by
connecting them with edges. This is convenient since we already have edges as DistanceVectors.
I will always construct the distance vectors so they are measured from each region’s center
point. To illustrate the creation of the region map in a real environment (my basement), see
Figure 7-12.

Figure 7-12. The basement model

The next step is to create a data structure that can represent this, called Room. The Room
class, like the region class, has regions as vertices and edges, which will be DistanceVectors.
I have added a sample Room in the static method called getBasement(), which defines the
room in the previous figure. See Example 7-17.

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