public static ManhattanLocation MoveForward(ManhattanLocation position, int directionFacing, int amount, int multiplier = 1)
{
ManhattanLocation endingPosition = new(position.HorizontalPosition, position.VerticalPosition);
switch (directionFacing)
{
case Direction.EAST:
endingPosition.HorizontalPosition += amount * multiplier;
break;
case Direction.WEST:
endingPosition.HorizontalPosition -= amount * multiplier;
break;
case Direction.NORTH:
endingPosition.VerticalPosition += amount * multiplier;
break;
case Direction.SOUTH:
endingPosition.VerticalPosition -= amount * multiplier;
break;
default:
throw new Exception("Invalid move direction.");
}
return(endingPosition);
}
public static ManhattanLocation MoveDirectionally(ManhattanLocation position, char direction, int amount, int multiplier = 1)
{
ManhattanLocation endingPosition = new(position.HorizontalPosition, position.VerticalPosition);
switch (direction)
{
case Directive.MOVE_NORTH:
endingPosition.VerticalPosition += amount;
break;
case Directive.MOVE_SOUTH:
endingPosition.VerticalPosition -= amount;
break;
case Directive.MOVE_EAST:
endingPosition.HorizontalPosition += amount;
break;
case Directive.MOVE_WEST:
endingPosition.HorizontalPosition -= amount;
break;
}
return(endingPosition);
}
public static ManhattanLocation MoveToWaypoint(ManhattanLocation waypointLocation, ManhattanLocation shipLocation, int multiplier)
{
ManhattanLocation endingWaypointPosition = new(waypointLocation.HorizontalPosition * multiplier, waypointLocation.VerticalPosition *multiplier);
ManhattanLocation endingShipPosition = new(endingWaypointPosition.HorizontalPosition + shipLocation.HorizontalPosition, endingWaypointPosition.VerticalPosition + shipLocation.VerticalPosition);
return(endingShipPosition);
}
public static ManhattanLocation RotateWaypoint(ManhattanLocation waypointLocation, char rotateDirection, int amount)
{
if (amount != 360 && amount != 270 && amount != 180 && amount != 90 && amount != 0)
{
throw new Exception("Unknown rotation amount.");
}
ManhattanLocation endingPosition = new(waypointLocation.HorizontalPosition, waypointLocation.VerticalPosition);
switch (amount)
{
case 90:
endingPosition.VerticalPosition = waypointLocation.HorizontalPosition * -1;
endingPosition.HorizontalPosition = waypointLocation.VerticalPosition;
if (rotateDirection == Directive.ROTATE_LEFT)
{
endingPosition.VerticalPosition = endingPosition.VerticalPosition * -1; // undo
endingPosition.HorizontalPosition = endingPosition.HorizontalPosition * -1;
}
break;
case 180:
endingPosition.VerticalPosition = waypointLocation.HorizontalPosition * -1;
endingPosition.HorizontalPosition = waypointLocation.VerticalPosition * -1;
break;
case 270:
endingPosition.VerticalPosition = waypointLocation.HorizontalPosition;
endingPosition.HorizontalPosition = waypointLocation.VerticalPosition * -1;
if (rotateDirection == Directive.ROTATE_LEFT)
{
endingPosition.VerticalPosition = endingPosition.VerticalPosition * -1;
endingPosition.HorizontalPosition = endingPosition.HorizontalPosition * -1; // undo
}
break;
case 360:
case 0:
break;
}
return(endingPosition);
}
