More work on gambling

src/Nadeko.Econ/Gambling/Betflip/BetflipGame.cs

@@ -0,0 +1,28 @@
+namespace Nadeko.Econ.Gambling;
+
+public sealed class BetflipGame
+{
+    private readonly decimal _winMulti;
+    private readonly NadekoRandom _rng;
+
+    public BetflipGame(decimal winMulti)
+    {
+        _winMulti = winMulti;
+        _rng = new NadekoRandom();
+    }
+
+    public BetflipResult Flip(int guess, decimal amount)
+    {
+        var side = _rng.Next(0, 1);
+        decimal won = 0;
+        
+        if (side == guess)
+            won = amount * _winMulti;
+        
+        return new BetflipResult()
+        {
+            Side = side, 
+            Won = won,
+        };
+    }
+}