Swift 4 Protocol-Oriented Programming - Third Edition

Requirements for the sample code

When we develop applications, we usually have a set of requirements that we need to work towards. Our sample project in this chapter and the next are no different. The following is a list of requirements for the vehicle types that we will be creating:

• We will have three categories of vehicle: sea, land, and air. A vehicle can be a member of multiple categories.
• Vehicles may move or attack when they are on a tile that matches any of the categories they are in.
• Vehicles will be unable to move to or attack on a tile that does not match any of the categories they are in.
• When a vehicle's hit points reach zero, the vehicle will be considered incapacitated. We will need to keep all active vehicles in a single array ...