More work on gambling

src/Nadeko.Econ/Gambling/Wof/WofGame.cs

@@ -0,0 +1,34 @@
+namespace Nadeko.Econ.Gambling;
+
+public sealed class WofGame
+{
+    public static IReadOnlyList<decimal> DEFAULT_MULTIPLIERS = new[] { 1.7M, 1.5M, 0.2M, 0.1M, 0.3M, 0.5M, 1.2M, 2.4M };
+    
+    private readonly IReadOnlyList<decimal> _multipliers;
+    private readonly NadekoRandom _rng;
+
+    public WofGame(IReadOnlyList<decimal> multipliers)
+    {
+        _multipliers = multipliers;
+        _rng = new();
+    }
+
+    public WofGame() : this(DEFAULT_MULTIPLIERS)
+    {
+    }
+
+    public WofResult Spin(long bet)
+    {
+        var result = _rng.Next(0, _multipliers.Count);
+
+        var multi = _multipliers[result];
+        var amount = bet * multi;
+
+        return new()
+        {
+            Index = result,
+            Multiplier = multi,
+            Won = amount
+        };
+    }
+}