utils for JSON files and RNG/rolling, abstracted arg parsing for commands

BLHX.Server.Common/Utils/Config.cs

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+namespace BLHX.Server.Common.Utils;
+
+public class Config : Singleton<Config>
+{
+    public string Address { get; set; } = "192.168.1.4";
+    public uint Port { get; set; } = 20000;
+
+    public static void Load()
+    {
+        Instance = JSON.Load<Config>(JSON.ConfigPath);
+
+#if DEBUG
+        Logger.c.Log($"Loaded Config:\n{JSON.Stringify(Instance)}");
+#endif
+    }
+
+    public static void Save()
+    {
+        JSON.Save(JSON.ConfigPath, Instance);
+
+#if DEBUG
+        Logger.c.Log("Saved Config");
+#endif
+    }
+}

BLHX.Server.Common/Utils/JSON.cs

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+using System.Text.Json;
+
+namespace BLHX.Server.Common.Utils;
+
+public static class JSON
+{
+    public static string ConfigPath => Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Config.json");
+
+    public static T Load<T>(string path) where T : new()
+    {
+        if (!File.Exists(path))
+        {
+            T obj = new T();
+            Save(path, obj);
+        }
+
+        return JsonSerializer.Deserialize<T>(File.ReadAllText(path));
+    }
+
+    public static void Save<T>(string path, T obj)
+    {
+        File.WriteAllText(path, JsonSerializer.Serialize(obj, new JsonSerializerOptions()
+        {
+            WriteIndented = true
+        }));
+    }
+
+    public static string Stringify<T>(T obj)
+    {
+        return JsonSerializer.Serialize(obj, new JsonSerializerOptions()
+        {
+            WriteIndented = true
+        });
+    }
+}

BLHX.Server.Common/Utils/RNG.cs

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+namespace BLHX.Server.Common.Utils;
+
+public static class RNG
+{
+    public static readonly SortedDictionary<int, float> ShipRarityRates = new()
+    {
+        {6, 1.2f},  // UR
+        {5, 7f},    // SSR
+        {4, 12f},   // Elite
+        {2, 28.8f}, // Normal
+        {3, 51f},   // Rare
+    };
+
+    static readonly Random random = new Random((int)DateTime.Now.Ticks);
+
+    public static int Next(int min, int max)
+        => random.Next(min, max);
+
+    public static int Next(int max)
+        => random.Next(max);
+    
+    public static float NextFloat(float min, float max)
+    {
+        double range = (double)max - min;
+        double sample = random.NextDouble();
+        double scaled = (sample * range) + min;
+
+        return (float)scaled;
+    }
+
+    public static float NextFloat(float max)
+        => NextFloat(0f, max);
+    
+    public static bool NextBool()
+        => random.Next(2) == 0;
+
+    public static float NextRoll()
+        => NextFloat(100f);
+    
+    public static T NextFromList<T>(IList<T> list)
+        => list[random.Next(list.Count)];
+
+    public static U NextFromDict<T, U>(IDictionary<T, U> dict)
+        => dict.ElementAt(random.Next(dict.Count)).Value;
+
+    public static int NextFromRarityDict(SortedDictionary<int, float> dict)
+    {
+        float roll = NextRoll();
+        float sum = 0f;
+
+        foreach (var pair in dict)
+        {
+            sum += pair.Value;
+            if (roll <= sum)
+                return pair.Key;
+        }
+
+        throw new Exception("NextFromRarityDict() roll failed");
+    }
+
+    public static int NextShipRarity()
+        => NextFromRarityDict(ShipRarityRates);
+}

BLHX.Server.Common/Utils/Singleton.cs

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+namespace BLHX.Server.Common.Utils;
+
+public abstract class Singleton<T> where T : new()
+{
+    static T instance;
+    public static T Instance
+    {
+        get
+        {
+            if (instance == null)
+                instance = new T();
+
+            return instance;
+        }
+        set => instance = value;
+    }
+}