From fe91c0f07a1b848e789ef5776f1b081a8b8e1ddb Mon Sep 17 00:00:00 2001
From: Eveldee <eveldee0680@live.fr>
Date: Mon, 12 Dec 2022 15:21:15 +0100
Subject: [PATCH] Add day 10

---
 Days/Day10.cs | 281 ++++++++++++++++++++++++++++++++++++++++++++++++++
 Program.cs    |   2 +-
 2 files changed, 282 insertions(+), 1 deletion(-)
 create mode 100644 Days/Day10.cs

diff --git a/Days/Day10.cs b/Days/Day10.cs
new file mode 100644
index 0000000..dd5dfd7
--- /dev/null
+++ b/Days/Day10.cs
@@ -0,0 +1,281 @@
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day10 : Day
+{
+    public override int Number => 10;
+    public override string Name => "Cathode-Ray Tube";
+    public override void RunPart1()
+    {
+        int cycle = 1;
+        int x = 1;
+        long sum = 0;
+
+        // Increment sum when needed
+        void IncrementCycle()
+        {
+            cycle++;
+
+            // Check for signal stength at the start of a cycle
+            if ((cycle + 20) % 40 == 0)
+            {
+                sum += x * cycle;
+            }
+        }
+
+        foreach (var line in Input.ReadAllLines())
+        {
+            // noop
+            if (line == "noop")
+            {
+                // noop finished, go to next cycle
+                IncrementCycle();
+            }
+            // addx
+            else
+            {
+                var split = line.Split(' ');
+                var v = int.Parse(split[1]);
+
+                // Prepare addx
+                IncrementCycle();
+
+                // addx finished, add to x and then go to next cycle
+                x += v;
+                IncrementCycle();
+            }
+        }
+
+        AnsiConsole.MarkupLine($"[green]Sum of signal strengths: [yellow]{sum}[/][/]");
+    }
+
+    public override void RunPart2()
+    {
+        // Setup the CRT
+        const char litPixel = '#';
+        const char darkPixel = '.';
+
+        const int rowCount = 6;
+        const int columnCount = 40;
+        var crt = new char[rowCount, columnCount];
+        var crtCanvas = new Canvas(columnCount, rowCount);
+
+        // Now cycle is the position where the CRT is drawing (need to offset by 1 in the grid)
+        int cycle = 1;
+        // x is the position of the sprite
+        int x = 1;
+
+        // Draw first pixel
+        crt[0, 0] = litPixel;
+        crtCanvas.SetPixel(0, 0, Color.Red);
+
+        // Increment sum when needed
+        void IncrementCycle()
+        {
+            cycle++;
+
+            // We're done drawing the crt
+            if (cycle > 240)
+            {
+                return;
+            }
+
+            // Draw a white or black pixel
+            int row = (cycle - 1) / columnCount;
+            int column = (cycle - 1) % columnCount;
+
+            // The CRT is drawing on the sprite
+            if (column == x - 1 || column == x || column == x + 1)
+            {
+                crt[row, column] = litPixel;
+                crtCanvas.SetPixel(column, row, (cycle + row) % 2 == 0 ? Color.Green : Color.Red);
+            }
+            else
+            {
+                crt[row, column] = darkPixel;
+                crtCanvas.SetPixel(column, row, Color.Black);
+            }
+        }
+
+        foreach (var line in Input.ReadAllLines())
+        {
+            // noop
+            if (line == "noop")
+            {
+                // noop finished, go to next cycle
+                IncrementCycle();
+            }
+            // addx
+            else
+            {
+                var split = line.Split(' ');
+                var v = int.Parse(split[1]);
+
+                // Prepare addx
+                IncrementCycle();
+
+                // addx finished, add to x and then go to next cycle
+                x += v;
+                IncrementCycle();
+            }
+        }
+
+        // Print the CRT
+        AnsiConsole.Write(crtCanvas);
+    }
+
+    #region Input
+
+    public const string Input =
+    """
+    noop
+    noop
+    addx 15
+    addx -10
+    noop
+    noop
+    addx 3
+    noop
+    noop
+    addx 7
+    addx 1
+    addx 4
+    addx -1
+    addx 1
+    addx 5
+    addx 1
+    noop
+    noop
+    addx 5
+    addx -1
+    noop
+    addx 3
+    noop
+    addx 3
+    addx -38
+    noop
+    addx 3
+    addx 2
+    addx 5
+    addx 2
+    addx 26
+    addx -21
+    addx -2
+    addx 5
+    addx 2
+    addx -14
+    addx 15
+    noop
+    addx 7
+    noop
+    addx 2
+    addx -22
+    addx 23
+    addx 2
+    addx 5
+    addx -40
+    noop
+    noop
+    addx 3
+    addx 2
+    noop
+    addx 24
+    addx -19
+    noop
+    noop
+    noop
+    addx 5
+    addx 5
+    addx 2
+    noop
+    noop
+    noop
+    noop
+    addx 7
+    noop
+    addx 3
+    noop
+    addx 3
+    addx -2
+    addx 2
+    addx 5
+    addx -38
+    noop
+    noop
+    noop
+    addx 5
+    addx 2
+    addx -1
+    addx 2
+    addx 30
+    addx -23
+    noop
+    noop
+    noop
+    noop
+    addx 3
+    addx 5
+    addx -11
+    addx 12
+    noop
+    addx 6
+    addx 1
+    noop
+    addx 4
+    addx 3
+    noop
+    addx -40
+    addx 4
+    addx 28
+    addx -27
+    addx 5
+    addx 2
+    addx 5
+    noop
+    noop
+    addx -2
+    addx 2
+    addx 5
+    addx 3
+    noop
+    addx 2
+    addx -25
+    addx 30
+    noop
+    addx 3
+    addx -2
+    addx 2
+    addx 5
+    addx -39
+    addx 29
+    addx -27
+    addx 5
+    noop
+    noop
+    noop
+    addx 4
+    noop
+    addx 1
+    addx 2
+    addx 5
+    addx 2
+    noop
+    noop
+    noop
+    noop
+    addx 5
+    addx 1
+    noop
+    addx 2
+    addx 5
+    addx -32
+    addx 34
+    noop
+    noop
+    noop
+    noop
+    """;
+
+    #endregion
+}
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
index fdb8476..269b173 100644
--- a/Program.cs
+++ b/Program.cs
@@ -9,7 +9,7 @@ var days = Assembly.GetAssembly(typeof(Day))!.GetTypes()
 
 var select = new SelectionPrompt<Day>()
     .Title("[cyan]Select a [yellow]day[/] to run:[/]")
-    .AddChoices(days.Reverse());
+    .AddChoices(days.OrderByDescending(d => d.Number));
 
 var selectedDay = AnsiConsole.Prompt(select);