From 9517d86f29534d0c6158910644246ab1c3c6590f Mon Sep 17 00:00:00 2001
From: Paul Sobolik <psobolik@zoho.com>
Date: Sun, 6 Feb 2022 16:30:50 -0500
Subject: [PATCH] Bunny in csharp

---
 19_Bunny/csharp/BasicData.cs | 25 +++++++++++
 19_Bunny/csharp/Bunny.cs     | 87 ++++++++++++++++++++++++++++++++++++
 19_Bunny/csharp/Program.cs   | 16 +++++++
 3 files changed, 128 insertions(+)
 create mode 100644 19_Bunny/csharp/BasicData.cs
 create mode 100644 19_Bunny/csharp/Bunny.cs
 create mode 100644 19_Bunny/csharp/Program.cs

diff --git a/19_Bunny/csharp/BasicData.cs b/19_Bunny/csharp/BasicData.cs
new file mode 100644
index 00000000..76647a56
--- /dev/null
+++ b/19_Bunny/csharp/BasicData.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Bunny
+{
+    internal class BasicData
+    {
+        private readonly int[] data;
+
+        private int index;
+
+        public BasicData(int[] data)
+        {
+            this.data = data;
+            index = 0;
+        }
+        public int Read()
+        {
+            return data[index++];
+        }
+    }
+}
diff --git a/19_Bunny/csharp/Bunny.cs b/19_Bunny/csharp/Bunny.cs
new file mode 100644
index 00000000..76e5e7e4
--- /dev/null
+++ b/19_Bunny/csharp/Bunny.cs
@@ -0,0 +1,87 @@
+namespace Bunny
+{
+    internal class Bunny
+    {
+        private const int asciiBase = 64;
+        private readonly int[] bunnyData = {
+            2,21,14,14,25,
+            1,2,-1,0,2,45,50,-1,0,5,43,52,-1,0,7,41,52,-1,
+            1,9,37,50,-1,2,11,36,50,-1,3,13,34,49,-1,4,14,32,48,-1,
+            5,15,31,47,-1,6,16,30,45,-1,7,17,29,44,-1,8,19,28,43,-1,
+            9,20,27,41,-1,10,21,26,40,-1,11,22,25,38,-1,12,22,24,36,-1,
+            13,34,-1,14,33,-1,15,31,-1,17,29,-1,18,27,-1,
+            19,26,-1,16,28,-1,13,30,-1,11,31,-1,10,32,-1,
+            8,33,-1,7,34,-1,6,13,16,34,-1,5,12,16,35,-1,
+            4,12,16,35,-1,3,12,15,35,-1,2,35,-1,1,35,-1,
+            2,34,-1,3,34,-1,4,33,-1,6,33,-1,10,32,34,34,-1,
+            14,17,19,25,28,31,35,35,-1,15,19,23,30,36,36,-1,
+            14,18,21,21,24,30,37,37,-1,13,18,23,29,33,38,-1,
+            12,29,31,33,-1,11,13,17,17,19,19,22,22,24,31,-1,
+            10,11,17,18,22,22,24,24,29,29,-1,
+            22,23,26,29,-1,27,29,-1,28,29,-1,4096
+        };
+
+        public void Run()
+        {
+            PrintString(33, "BUNNY");
+            PrintString(15, "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY");
+            PrintLines(3);
+
+            // Set up a BASIC-ish data object
+            BasicData data = new (bunnyData);
+
+            // Get the first five data values into an array. 
+            // These are the characters we are going to print.
+            // Unlike the original program, we are only converting 
+            // them to ASCII once.
+            var a = new char[5];
+            for (var i = 0; i < 5; ++i)
+            {
+                a[i] = (char)(asciiBase + data.Read());
+            }
+            PrintLines(6);
+
+            PrintLines(1);
+            var col = 0;
+            while (true)
+            {
+                var x = data.Read();
+                if (x < 0) // Start a new line
+                {
+                    PrintLines(1);
+                    col = 0;
+                    continue;
+                }
+                if (x > 128) break; // End processing
+                col += PrintSpaces(x - col); // Move to TAB position x (sort of)
+                var y = data.Read(); // Read the next value
+                for (var i = x; i <= y; ++i)
+                {
+                    // var j = i - 5 * (i / 5); // BASIC didn't have a modulus operator
+                    Console.Write(a[i % 5]);
+                    // Console.Write(a[col % 5]); // This works, too
+                    ++col;
+                }
+            }
+            PrintLines(6);
+        }
+        private static void PrintLines(int count)
+        {
+            for (var i = 0; i < count; ++i)
+                Console.WriteLine();
+        }
+        private static int PrintSpaces(int count)
+        {
+            for (var i = 0; i < count; ++i)
+                Console.Write(' ');
+            return count;
+        }
+        public static void PrintString(int tab, string value, bool newLine = true)
+        {
+            PrintSpaces(tab);
+            Console.Write(value);
+            if (newLine) Console.WriteLine();
+        }
+
+    }
+}
diff --git a/19_Bunny/csharp/Program.cs b/19_Bunny/csharp/Program.cs
new file mode 100644
index 00000000..25604a51
--- /dev/null
+++ b/19_Bunny/csharp/Program.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Bunny
+{
+    public static class Program
+    {
+        public static void Main()
+        {
+            new Bunny().Run();
+        }
+    }
+}