worked in A*, completed day 01, 2024

AdvendOfCode.Runner/AdventOfCode.Runner.csproj

@@ -8,6 +8,11 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\AdventOfCode.Solutions\AdventOfCode.Solutions.csproj" />
   </ItemGroup>

AdvendOfCode.Runner/Program.cs

@@ -1,14 +1,27 @@
-using AdventOfCode.Solutions._2023;
+using AdventOfCode.Solutions;
 using AdventOfCode.Core.Shared;
 using AdventOfCode.Core;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.DependencyInjection;
 
-InputReader inputReader = new()
-{
-    //IsDebug = true
-};
 
-IChallange challange = new Day12(inputReader);
+IChallange challange = Host.CreateDefaultBuilder()
+    .ConfigureServices(ConfigureServices)
+    .Build()
+    .Services
+    .GetService<SolutionManager>()
+    .GetChallange(2024, 1);
 
 Console.WriteLine($"Part 1: {await challange.GetSolutionPart1()}");
 
-Console.WriteLine($"Part 2: {await challange.GetSolutionPart2()}");
+Console.WriteLine($"Part 2: {await challange.GetSolutionPart2()}");
+
+static void ConfigureServices(IServiceCollection services)
+{
+
+
+    services
+        .AddChallanges()
+        .AddTransient<InputReader, InputReader>()
+        .AddScoped<SolutionManager>();
+}

AdventOfCode.Core/Shared/A-Star/AStarGrid.cs

@@ -1,20 +1,19 @@
 namespace AdventOfCode.Core.Shared.A_Star
 {
-    public class AStarGrid(AStarNode[] data) : Grid<AStarNode>(data)
+    public class AStarGrid<T>(T[] data) : Grid<T>(data) where T : AStarNode
     {
         public int TileMoveCost { get; set; }
 
-        public int MinimalSteps(AStarNode start, AStarNode destination)
+        public int MinimalSteps(T start, T destination)
         {
-            List<AStarNode> openNodes = [start];
-            List<AStarNode> closedNodes = [];
+            List<T> openNodes = [start];
+            List<T> closedNodes = [];
 
             while(openNodes.Count != 0)
             {
                 // get the lowest F-cost node
-                AStarNode current = openNodes.OrderBy(n => n.FCost).First();
+                T current = openNodes.OrderBy(n => n.FCost).First();
                 openNodes.Remove(current);
-                current.CloseNode();
                 closedNodes.Add(current);
 
                 if (current == destination)
@@ -23,22 +22,33 @@
                     return 1;
                 }
 
-                var neighbors = GetNeighbors(current, false);
-                neighbors = neighbors.Where(n => current.CanMoveTo(current));
+                var neighbors = GetNeighbors(current, false)
+                    .Where(n => current.CanMoveTo(current));
 
                 // calc costs
-                foreach(AStarNode neighbor in neighbors)
+                foreach(T neighbor in neighbors)
                 {
-                    neighbor.ParentNode = current;
-                    // since we only move straight the move cost is always the same
-                    neighbor.GCost = current.GCost + TileMoveCost;
-                    neighbor.HCost = neighbor.GetManhattanDistance(destination) * TileMoveCost;
-                    neighbor.OpenNode();
+                    long g = current.GCost + GetMoveCost(current, neighbor);
+                    long h = neighbor.GetManhattanDistance(destination) * GetMoveCost(current, neighbor);
+                    long f = g + h;
+
+                    int openNodeIndex = openNodes.IndexOf(neighbor),
+                        closedNodeIndex = closedNodes.IndexOf(neighbor);
+
+                    if (openNodeIndex > 0 && openNodes[openNodeIndex].FCost > f)
+                    {
+                        openNodes[openNodeIndex].ParentNode = neighbor;
+                        openNodes[openNodeIndex].GCost = g;
+                        openNodes[openNodeIndex].HCost = h;
+                    }
+
                     openNodes.Add(neighbor);
                 }
             }
 
             return -1;
         }
+
+        public virtual int GetMoveCost(T current, T neighbor) => TileMoveCost;
     }
 }

AdventOfCode.Core/Shared/A-Star/AStarNode.cs

@@ -19,18 +19,14 @@ namespace AdventOfCode.Core.Shared.A_Star
         /// </summary>
         public long FCost => GCost + HCost;
 
-        public bool? IsClosed { get; private set; } = null;
-
         public AStarNode? ParentNode { get; set; }
 
+        public AStarNode() { }
+
         public AStarNode(Point position) : base(position) { }
 
         public AStarNode(int x, int y, char value) : base(x, y, value) { }
 
-        public void OpenNode() => IsClosed = false;
-
-        public void CloseNode() => IsClosed = true;
-
         public virtual bool CanMoveTo(AStarNode target) => true;
     }
 }

AdventOfCode.Solutions/2023/Day 00/Day00.cs

@@ -1,26 +0,0 @@
-namespace AdventOfCode.Solutions._2023
-{
-    public class Day00 : IChallange
-    {
-        public int Year => 0;
-
-        public int Day => 0;
-
-        private readonly InputReader _inputReader;
-
-        public Day00(InputReader inputReader)
-        {
-            _inputReader = inputReader;
-            _inputReader.SetInput(this);
-        }
-        public async Task<string> GetSolutionPart1()
-        {
-            return string.Empty;
-        }
-
-        public async Task<string> GetSolutionPart2()
-        {
-            return string.Empty;
-        }
-    }
-}

AdventOfCode.Solutions/2023/Day 17/Day17.cs

@@ -1,4 +1,6 @@
-namespace AdventOfCode.Solutions._2023
+using AdventOfCode.Core.Shared.A_Star;
+
+namespace AdventOfCode.Solutions._2023
 {
     public class Day17 : IChallange
     {
@@ -15,6 +17,8 @@
 
         public async Task<string> GetSolutionPart1()
         {
+            AStarGrid<HeatNode> grid = await _inputReader.ReadToGrid<HeatNode>() as AStarGrid<HeatNode>;
+
             return string.Empty;
         }
 
@@ -22,5 +26,25 @@
         {
             return string.Empty;
         }
+
+        public class HeatNode : AStarNode
+        {
+            private int HeatLoss { get => int.Parse("" + Value); }
+
+            public HeatNode() { }
+
+            public HeatNode(Point position) : base(position)
+            {
+            }
+
+            public HeatNode(int x, int y, char value) : base(x, y, value)
+            {
+            }
+
+            public override bool CanMoveTo(AStarNode target)
+            {
+                return base.CanMoveTo(target);
+            }
+        }
     }
 }

AdventOfCode.Solutions/AdventOfCode.Solutions.csproj

@@ -7,6 +7,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.2" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\AdventOfCode.Core\AdventOfCode.Core.csproj" />
   </ItemGroup>
@@ -30,7 +34,7 @@
     <Compile Update="2023\Day 13\Day13.cs">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Compile>
-    <Compile Update="2023\Day 00\Day00.cs">
+    <Compile Update="Day 00\Day00.cs">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Compile>
     <Compile Update="2023\Day 12\Day12.cs">
@@ -72,6 +76,9 @@
     <Compile Update="2023\Day 03\Day03.cs">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Compile>
+    <Compile Update="2024\Day 01\Day01.cs">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Compile>
   </ItemGroup>
 
 </Project>

AdventOfCode.Solutions/day-00-input.txt

@@ -1,13 +1,6 @@
-2413432311323
-3215453535623
-3255245654254
-3446585845452
-4546657867536
-1438598798454
-4457876987766
-3637877979653
-4654967986887
-4564679986453
-1224686865563
-2546548887735
-4322674655533
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3