public override string Part1(string input, object?args)
{
var m = new MovingIn2D
{
Face = ECardinals.Up,
Map = ParseMap(input),
DefaultMapValue = "."
};
var infectCount = 0;
for (var i = 0; i < (int)args; i++)
{
if (m.MapValue == ".")
{
m.Turn(ETurnOrders.Left);
m.MapValue = "#";
infectCount++;
m.MoveForward(1, false, true);
}
else if (m.MapValue == "#")
{
m.Turn(ETurnOrders.Right);
m.MapValue = ".";
m.MoveForward(1, false, true);
}
}
return(infectCount.ToString());
}
public override string Part1(string input, object?args)
{
var person = new MovingIn2D();
foreach (var direction in input.Split(','))
{
person.Turn(ParseTurnOrders(direction));
person.MoveForward(ParseSteps(direction), false, true);
}
return(person.DistanceFrom(0, 0).ToString());
}
public override string Part1(string input, object?args)
{
var sub = new MovingIn2D();
var commands = input.Split("\r\n", StringSplitOptions.RemoveEmptyEntries);
foreach (var command in commands)
{
var(direction, distance) = CommandParser(command);
sub.Move(direction, distance, false, true);
}
return((sub.LocationX * -sub.LocationY).ToString());
}
private (string, string) Move(string input)
{
var steps = 0;
var ret = new StringBuilder();
var p = new MovingIn2D
{
Map = input.StringTo2ArrayOfArrays("").InvertArray().ToDictionaryOfPointObject(),
Face = ECardinals.Down,
InvalidDestinationString = " ",
MoveAllowed = true,
LocationX = input.Lines()[0].IndexOf('|'),
LocationY = input.Lines().Length - 1,
ThrowOnInvalidMove = true
};
while (p.MoveAllowed)
{
try
{
p.MoveForward(1, false, false);
steps += 1;
if (char.IsLetter(p.MapValue[0]))
{
ret.Append(p.MapValue);
}
}
catch (InvalidOperationException)
{
if (p.MapValue == "+")
{
p.Face = (ECardinals)Enum.Parse(typeof(ECardinals), (((int)p.Face + 1) % 4).ToString());
try
{
p.Peek();
}
catch (InvalidOperationException)
{
p.Face = (ECardinals)Enum.Parse(typeof(ECardinals), (((int)p.Face + 2) % 4).ToString());
}
}
else
{
break;
}
}
}
return(ret.ToString(), (steps + 1).ToString());
}
public override string Part2(string input, object?args)
{
var sub = new MovingIn2D();
var commands = input.Split("\r\n", StringSplitOptions.RemoveEmptyEntries);
int hor;
int ver;
int aim = 0;
foreach (var command in commands)
{
(hor, ver, aim) = CommandParser2(command, aim);
sub.Move(ECardinals.Right, hor, false, true);
sub.Move(ECardinals.Down, ver, false, true);
}
return((sub.LocationX * -sub.LocationY).ToString());
}
public override string Part2(string input, object?args)
{
_bDone = false;
var person = new MovingIn2D();
person.AlreadyVisited += OnAlreadyVisited;
foreach (var direction in input.Split(','))
{
person.Turn(ParseTurnOrders(direction));
person.MoveForward(ParseSteps(direction), true, true);
if (_bDone)
{
break;
}
}
return(person.DistanceFrom(0, 0).ToString());
}
public override string Part1(string input, object?args)
{
var p = new MovingIn2D
{
LocationX = 1,
LocationY = 1,
InvalidDestinationString = "#",
Map = (Dictionary <Point, object>)args
};
var retVal = new StringBuilder();
foreach (var line in input.Lines())
{
foreach (var order in line)
{
p.Move(ParseCardinal(order.ToString()), 1, false, false);
}
retVal.Append(p.MapValue);
}
return(retVal.ToString());
}
protected int Part2Result(int input)
{
_dic = new Dictionary <Point, int>();
var p = new MovingIn2D
{
Face = ECardinals.Down,
LocationX = 0,
LocationY = 0
};
var currentNo = 1;
_dic.Add(new Point(0, 0), 1);
var reps = 0;
while (currentNo != input)
{
for (var i = 0; i < 2; i++)
{
p.Turn(ETurnOrders.Left);
var rep = 0;
while (rep <= reps)
{
p.MoveForward(1, true, true);
currentNo = GetCurrentNo(new Point(p.LocationX, p.LocationY));
if (input < currentNo)
{
return(currentNo);
}
_dic.Add(new Point(p.LocationX, p.LocationY), currentNo);
rep++;
}
}
reps++;
}
return(currentNo);
}
private void OnAlreadyVisited(MovingIn2D sender, int x, int y)
{
_bDone = true;
sender.MoveAllowed = false;
}