Open the Ship.h file.

Add enum for the eight directions of the ship, as shown in the following code:

typedef NS_ENUM(NSInteger, ShipDirection) {
    DirectionNorth,
    DirectionSouth,
    DirectionWest,
    DirectionEast,
    DirectionNorthWest,
    DirectionNorthEast,
    DirectionSouthWest,
    DirectionSouthEast
};

Add another enum for the type of the ship, as shown in the following code:

typedef NS_ENUM(NSInteger, ShipType) {
    ShipPirate,
    ShipNormal
};

Change the _shootingClip instance variable to be a pointer to the NSArray class and remove the _idleImage instance variable, as shown in the following code:

NSArray *_shootingClip;

Add a property for the ship's hitpoints, as shown in the following line of code:

@property int hitpoints;

Add another property for type, as shown in the following line of code:

@property ShipType type;

The third property is the direction of the ship...