NearestCity

Will return the name and location of the closest city to the specified point in space. To do this correctly, you may want to use an algorithm using a PriorityQueue, such as this or this - otherwise, you might not be fast enough.

Parameters (In output order)

• x
• y

Possible <output>

The output will contain one city tag which is the nearest city. This is an example of a city tag:

   <city name="city1" x="coordx" y="coordy" color="color1" radius="radius1"/>

Possible <error> types

• mapIsEmpty

<success> Example

   <success>
       <command name="nearestCity"/>
       <parameters>
           <x value="1"/>
           <y value="2"/>
       </parameters>
       <output>
           <city name="Annapolis" x="20" y="30" color="red" radius="12"/>
       </output>
   </success>

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