public static (int fullyFinishedRounds, int totalHitpoints, bool anyElfDied) ProcessGame(string pathToInputFile, int elvesAttackPower = 3)
{
var lines = File.ReadAllLines(pathToInputFile);
Day15Map game = new Day15Map(lines[0].Length, lines.Length);
for (int y = 0; y < lines.Length; y++)
{
var line = lines[y];
for (int x = 0; x < line.Length; x++)
{
switch (line[x])
{
case '#':
game.Set(x, y);
break;
case 'G':
game.AddUnit(new Day15Unit(Day15UnitType.Goblin, new Point(x, y), 3));
break;
case 'E':
game.AddUnit(new Day15Unit(Day15UnitType.Elf, new Point(x, y), elvesAttackPower));
break;
}
}
}
int elvesonTheBattleField = game.AllUnits.Where(x => x.Type == Day15UnitType.Elf).Count();
int roundCounter = 0;
PrintAndWait();
while (!game.MakeARound())
{
roundCounter++;
PrintAndWait();
}
PrintAndWait();
void PrintAndWait()
{
//game.Print();
//Console.WriteLine(roundCounter);
//Console.ReadLine();
}
return(roundCounter, game.AllUnits.Sum(x => x.hitPoints), elvesonTheBattleField != game.AllUnits.Where(x => x.Type == Day15UnitType.Elf).Count());
}
public bool TakeATurn(Day15Map map)
{
var allEnemyUnits = map.AllUnits.Where(x => x.IsTarget(Type)).ToList();
if (!allEnemyUnits.Any())
{
return(false);
}
var costs = map.GetCosts(Position);
(Point point, int cost)? GetCost(Day15Unit unit)
{
List <(Point point, int cost)> reachablePoints = new List <(Point point, int cost)>();
foreach (var offset in offsets)
{
var copy = unit.Position;
copy.Offset(offset);
if (costs.ContainsKey(copy))
{
var value = costs[copy];
if (value > 0)
{
reachablePoints.Add((copy, value));
}
}
}
if (reachablePoints.Any())
{
return(reachablePoints.OrderBy(x => x.cost).ThenBy(x => x.point.Y).ThenBy(x => x.point.X).First());
}
return(null);
}
List <Day15Unit> possibleAttackUnits = new List <Day15Unit>();
foreach (var offset in offsets)
{
var copy = Position;
copy.Offset(offset);
var enemy = allEnemyUnits.FirstOrDefault(x => x.Position.Equals(copy));
if (enemy != null && !enemy.IsDead)
{
possibleAttackUnits.Add(enemy);
}
}
var unitToAttack = possibleAttackUnits.OrderBy(x => x.hitPoints).ThenBy(x => x.Position.Y).ThenBy(x => x.Position.X).FirstOrDefault();
if (unitToAttack == null)
{
var pointToReach = allEnemyUnits.Select(GetCost).Where(x => x != null).OrderBy(x => x.Value.cost).ThenBy(x => x.Value.point.Y).ThenBy(x => x.Value.point.X).FirstOrDefault();
if (pointToReach != null)
{
var newPoint = map.GetPath(Position, pointToReach.Value.point);
if (newPoint == null)
{
throw new Exception();
}
if (newPoint.Value.cost != pointToReach.Value.cost)
{
throw new Exception();
}
Position = newPoint.Value.firstStep;
}
else
{
}
}
//var possibleTargets = map.GetAllTargets().ToList();
//if (possibleTargets.Where(x => x.unit.IsTarget(Type)).Count() == 0)
// return false;
//var possible = possibleTargets.Select(x => (x, map.GetPaths(Position, x.unit.Position))).Where(x => x.Item2 != null).OrderBy(x => x.Item2.Value.lenght).ThenBy(x => x.Item2.Value.firstStep.Y).ThenBy(x => x.Item2.Value.firstStep.X);
//if (!possible.Where(x => x.Item1.unit.IsTarget(Type)).Any())
// return true;
//var f = possible.Where(x => x.Item1.unit.IsTarget(Type) && x.Item2.Value.lenght < 1000);
//if (f.Any() && f.Min(x => x.Item2.Value.lenght) > 1)
//{
// var actual = f.Where(x => !possibleTargets.Select(y => y.unit.Position).Contains(x.Item2.Value.firstStep)).SkipWhile(x => !x.Item1.canBeTargeted).FirstOrDefault();
// if (actual.Item2 != null)
// Position = actual.Item2.Value.firstStep;
//}
//attack
//List<Day15Unit> possibleAttackUnits = new List<Day15Unit>();
foreach (var offset in offsets)
{
var copy = Position;
copy.Offset(offset);
var enemy = allEnemyUnits.FirstOrDefault(x => x.Position.Equals(copy));
if (enemy != null && !enemy.IsDead)
{
possibleAttackUnits.Add(enemy);
}
}
unitToAttack = possibleAttackUnits.OrderBy(x => x.hitPoints).ThenBy(x => x.Position.Y).ThenBy(x => x.Position.X).FirstOrDefault();
if (unitToAttack != null)
{
unitToAttack.hitPoints -= attackPower;
}
return(true);
}