private ShipPosition SplitPositionString(string position)
{
// TODO: Expand to handle any whitespace as per spec.
var parts = position.Split(' ');
var shipPosition = new ShipPosition();
// TODO: Add handling for invalid input
shipPosition.XCoordinate = Int16.Parse(parts[0]);
shipPosition.YCoordinate = Int16.Parse(parts[1]);
shipPosition.Direction = parts[2][0];
return shipPosition;
}
private ShipPosition ApplyTransition(ShipPosition currentPosition, char navigationalOperation)
{
if(navigationalOperation == 'F')
{
switch(currentPosition.Direction)
{
case 'N':
currentPosition.YCoordinate++;
break;
case 'E':
currentPosition.XCoordinate++;
break;
case 'S':
currentPosition.YCoordinate--;
break;
case 'W':
currentPosition.XCoordinate--;
break;
}
}
if(navigationalOperation == 'L')
{
switch(currentPosition.Direction)
{
case 'N':
currentPosition.Direction = 'W';
break;
case 'E':
currentPosition.Direction = 'N';
break;
case 'S':
currentPosition.Direction = 'E';
break;
case 'W':
currentPosition.Direction = 'S';
break;
}
}
if(navigationalOperation == 'R')
{
switch(currentPosition.Direction)
{
case 'N':
currentPosition.Direction = 'E';
break;
case 'E':
currentPosition.Direction = 'S';
break;
case 'S':
currentPosition.Direction = 'W';
break;
case 'W':
currentPosition.Direction = 'N';
break;
}
}
return currentPosition;
}