public static CompassEnum NextPosition(CompassEnum heading, string instruction)
{
CompassEnum newHeading;
if (instruction == "L")
{
newHeading = TurnLeft(heading);
}
else if (instruction == "R")
{
newHeading = TurnRight(heading);
}
else
{
newHeading = heading;
}
return(newHeading);
}
public static Coordinate NewLocation(CompassEnum heading, Coordinate xy, Coordinate area)
{
Coordinate xyNew = xy;
switch (heading)
{
case CompassEnum.North:
{
xyNew = new Coordinate(xy.X, xy.Y + 1);
}
break;
case CompassEnum.East:
{
xyNew = new Coordinate(xy.X + 1, xy.Y);
}
break;
case CompassEnum.South:
{
xyNew = new Coordinate(xy.X, xy.Y - 1);
}
break;
case CompassEnum.West:
{
xyNew = new Coordinate(xy.X - 1, xy.Y);
}
break;
}
if (area.X < xy.X)
{
return(xy);
}
if (area.Y < xy.Y)
{
return(xy);
}
return(xyNew);
}
public string GetLocation(Coordinate xy, Coordinate area, CompassEnum compass, string directions)
{
var directionSplit = directions.ToCharArray();
var currentLocation = xy;
var currentHeading = compass;
CompassEnum newHeading;
for (var i = 0; i < directionSplit.Length; i++)
{
var instruction = directionSplit[i].ToString();
newHeading = CompassDirector.NextPosition(currentHeading, instruction);
if (newHeading == currentHeading)
{
currentLocation = CoordinateDirector.NewLocation(newHeading, currentLocation, area);
}
currentHeading = newHeading;
}
var finalLocation = currentLocation.X.ToString() + currentLocation.Y.ToString() + CompassConvertor(currentHeading);
return(finalLocation);
}
private CompassEnum CompassConvertor(string heading)
{
CompassEnum compHeading = CompassEnum.North;
switch (heading)
{
case "N":
compHeading = CompassEnum.North;
break;
case "E":
compHeading = CompassEnum.East;
break;
case "S":
compHeading = CompassEnum.South;
break;
case "W":
compHeading = CompassEnum.West;
break;
}
return(compHeading);
}
private string CompassConvertor(CompassEnum heading)
{
string stringHeading = string.Empty;
switch (heading)
{
case CompassEnum.North:
stringHeading = "N";
break;
case CompassEnum.East:
stringHeading = "E";
break;
case CompassEnum.South:
stringHeading = "S";
break;
case CompassEnum.West:
stringHeading = "W";
break;
}
return(stringHeading);
}
private static CompassEnum TurnRight(CompassEnum heading)
{
CompassEnum newHeading = heading;
switch (heading)
{
case CompassEnum.North:
{ newHeading = CompassEnum.East; }
break;
case CompassEnum.East:
{ newHeading = CompassEnum.South; }
break;
case CompassEnum.South:
{ newHeading = CompassEnum.West; }
break;
case CompassEnum.West:
{ newHeading = CompassEnum.North; }
break;
}
return(newHeading);
}
