Break out classes for resolving plays

07_Basketball/csharp/Game.cs

@@ -1,3 +1,4 @@
+using Basketball.Plays;
 using Basketball.Resources;
 using Games.Common.IO;
 using Games.Common.Randomness;
@@ -25,14 +26,16 @@ internal class Game
         _io.WriteLine();
 
         var scoreboard = new Scoreboard(
-            new Team("Dartmouth", HomeTeamPlay(clock, defense)),
+            new Team("Dartmouth", new HomeTeamPlay(_io, _random, clock, defense)),
-            new Team(_io.ReadString("Choose your opponent"), VisitingTeamPlay(clock, defense)),
+            new Team(_io.ReadString("Choose your opponent"), new VisitingTeamPlay(_io, _random, clock, defense)),
             _io);
 
+        var ballContest = new BallContest(0.4f, "{0} controls the tap", _io, _random);
+
         while (true)
         {
             _io.WriteLine("Center jump");
-            ContestBall(0.4f, scoreboard, "{0} controls the tap");
+            ballContest.Resolve(scoreboard);
 
             _io.WriteLine();
 
@@ -44,167 +47,4 @@ internal class Game
             }
         }
     }
-
-    private Func<Scoreboard, bool> HomeTeamPlay(Clock clock, Defense defense) => scoreboard =>
-    {
-        var shot = _io.ReadShot("Your shot");
-
-        if (_random.NextFloat() >= 0.5f && clock.IsFullTime)
-        {
-            _io.WriteLine();
-            if (!scoreboard.ScoresAreEqual)
-            {
-                scoreboard.Display(Resource.Formats.EndOfGame);
-                return true;
-            }
-
-            scoreboard.Display(Resource.Formats.EndOfSecondHalf);
-            clock.StartOvertime();
-            scoreboard.StartPeriod();
-            return false;
-        }
-
-        if (shot == 0)
-        {
-            defense.Set(_io.ReadDefense("Your new defensive alignment is"));
-            _io.WriteLine();
-            return false;
-        }
-
-        var playContinues = shot >= 3;
-
-        if (shot == 1 || shot == 2)
-        {
-            clock.Increment(scoreboard);
-            if (clock.IsHalfTime) { return false; }
-
-            Resolve("Jump shot", defense / 8)
-                .Do(0.341f, () => scoreboard.AddBasket("Shot is good"))
-                .Or(0.682f, () => ResolveShotOffTarget())
-                .Or(0.782f, () => ContestBall(0.5f, scoreboard, "Shot is blocked.  Ball controlled by {0}."))
-                .Or(0.843f, () => ResolveFreeThrows(scoreboard, "Shooter is fouled.  Two shots."))
-                .Or(() => scoreboard.Turnover("Charging foul.  Dartmouth loses ball."));
-        }
-
-        while (playContinues)
-        {
-            clock.Increment(scoreboard);
-            if (clock.IsHalfTime) { return false; }
-
-            playContinues = false;
-
-            Resolve(shot == 3 ? "Lay up." : "Set shot.", defense / 7)
-                .Do(0.4f, () => scoreboard.AddBasket("Shot is good.  Two points."))
-                .Or(0.7f, () => ResolveShotOffTheRim())
-                .Or(0.875f, () => ResolveFreeThrows(scoreboard, "Shooter fouled.  Two shots."))
-                .Or(0.925f, () => scoreboard.Turnover($"Shot blocked. {scoreboard.Visitors}'s ball."))
-                .Or(() => scoreboard.Turnover("Charging foul.  Dartmouth loses ball."));
-        }
-
-        return false;
-
-        void ResolveShotOffTarget() =>
-            Resolve("Shot is off target", 6 / defense)
-                .Do(0.45f, () => Resolve("Dartmouth controls the rebound.")
-                    .Do(0.4f, () => playContinues = true)
-                    .Or(() =>
-                    {
-                        if (defense == 6 && _random.NextFloat() > 0.6f)
-                        {
-                            scoreboard.Turnover();
-                            scoreboard.AddBasket($"Pass stolen by {scoreboard.Visitors} easy layup.");
-                            _io.WriteLine();
-                        }
-                        _io.Write("Ball passed back to you. ");
-                    }))
-                .Or(() => scoreboard.Turnover($"Rebound to {scoreboard.Visitors}"));
-
-        void ResolveShotOffTheRim() =>
-            Resolve("Shot is off the rim.")
-                .Do(2 / 3f, () => scoreboard.Turnover($"{scoreboard.Visitors} controls the rebound."))
-                .Or(() => Resolve("Dartmouth controls the rebound")
-                    .Do(0.4f, () => playContinues = true)
-                    .Or(() => _io.WriteLine("Ball passed back to you.")));
-    };
-
-    private Func<Scoreboard, bool> VisitingTeamPlay(Clock clock, Defense defense) => scoreboard =>
-    {
-        clock.Increment(scoreboard);
-        if (clock.IsHalfTime) { return false; }
-
-
-        _io.WriteLine();
-        var shot = _random.NextFloat(1, 3.5f);
-        var playContinues = shot > 2;
-
-        if (shot <= 2)
-        {
-            Resolve("Jump shot.", defense / 8)
-                .Do(0.35f, () => scoreboard.AddBasket("Shot is good."))
-                .Or(0.75f, () => ResolveBadShot("Shot is off the rim.", defense * 6))
-                .Or(0.9f, () => ResolveFreeThrows(scoreboard, "Player fouled.  Two shots."))
-                .Or(() => _io.WriteLine("Offensive foul.  Dartmouth's ball."));
-
-            _io.WriteLine();
-        }
-
-        while (playContinues)
-        {
-            playContinues = false;
-
-            Resolve(shot > 3 ? "Set shot." : "Lay up.", defense / 7)
-                .Do(0.413f, () => scoreboard.AddBasket("Shot is good."))
-                .Or(() => ResolveBadShot("Shot is missed.", 6 / defense));
-            _io.WriteLine();
-        }
-
-        return false;
-
-        void ResolveBadShot(string message, float defenseFactor) =>
-            Resolve("Shot is off the rim.", defense * 6)
-                .Do(0.5f, () => scoreboard.Turnover("Dartmouth controls the rebound."))
-                .Or(() => ResolveVisitorsRebound());
-
-        void ResolveVisitorsRebound()
-        {
-            _io.Write($"{scoreboard.Visitors} controls the rebound.");
-            if (defense == 6 && _random.NextFloat() <= 0.25f)
-            {
-                _io.WriteLine();
-                scoreboard.Turnover();
-                scoreboard.AddBasket("Ball stolen.  Easy lay up for Dartmouth.");
-                return;
-            }
-
-            if (_random.NextFloat() <= 0.5f)
-            {
-                _io.WriteLine();
-                _io.Write($"Pass back to {scoreboard.Visitors} guard.");
-                return;
-            }
-
-            playContinues = true;
-        }
-    };
-
-    void ContestBall(float probability, Scoreboard scoreboard, string messageFormat)
-    {
-        var winner = _random.NextFloat() <= probability ? scoreboard.Home : scoreboard.Visitors;
-        scoreboard.Offense = winner;
-        _io.WriteLine(messageFormat, winner);
-    }
-
-    void ResolveFreeThrows(Scoreboard scoreboard, string message) =>
-        Resolve(message)
-            .Do(0.49f, () => scoreboard.AddFreeThrows(2, "Shooter makes both shots."))
-            .Or(0.75f, () => scoreboard.AddFreeThrows(1, "Shooter makes one shot and misses one."))
-            .Or(() => scoreboard.AddFreeThrows(0, "Both shots missed."));
-
-    private Probably Resolve(string message) => Resolve(message, 1f);
-
-    private Probably Resolve(string message, float defenseFactor)
-    {
-        _io.WriteLine(message);
-        return new Probably(defenseFactor, _random);
-    }
 }

07_Basketball/csharp/Plays/BallContest.cs

@@ -0,0 +1,29 @@
+using Games.Common.IO;
+using Games.Common.Randomness;
+
+namespace Basketball.Plays;
+
+internal class BallContest : Play
+{
+    private readonly float _probability;
+    private readonly string _messageFormat;
+    private readonly IReadWrite _io;
+    private readonly IRandom _random;
+
+    internal BallContest(float probability, string messageFormat, IReadWrite io, IRandom random)
+        : base(io, random)
+    {
+        _io = io;
+        _probability = probability;
+        _messageFormat = messageFormat;
+        _random = random;
+    }
+
+    internal override bool Resolve(Scoreboard scoreboard)
+    {
+        var winner = _random.NextFloat() <= _probability ? scoreboard.Home : scoreboard.Visitors;
+        scoreboard.Offense = winner;
+        _io.WriteLine(_messageFormat, winner);
+        return false;
+    }
+}

07_Basketball/csharp/Plays/HomeTeamPlay.cs

@@ -0,0 +1,106 @@
+using Basketball.Resources;
+using Games.Common.IO;
+using Games.Common.Randomness;
+
+namespace Basketball.Plays;
+
+internal class HomeTeamPlay : Play
+{
+    private readonly TextIO _io;
+    private readonly IRandom _random;
+    private readonly Clock _clock;
+    private readonly Defense _defense;
+
+    public HomeTeamPlay(TextIO io, IRandom random, Clock clock, Defense defense)
+        : base(io, random)
+    {
+        _io = io;
+        _random = random;
+        _clock = clock;
+        _defense = defense;
+    }
+
+    internal override bool Resolve(Scoreboard scoreboard)
+    {
+        var shot = _io.ReadShot("Your shot");
+
+        if (_random.NextFloat() >= 0.5f && _clock.IsFullTime)
+        {
+            _io.WriteLine();
+            if (!scoreboard.ScoresAreEqual)
+            {
+                scoreboard.Display(Resource.Formats.EndOfGame);
+                return true;
+            }
+
+            scoreboard.Display(Resource.Formats.EndOfSecondHalf);
+            _clock.StartOvertime();
+            scoreboard.StartPeriod();
+            return false;
+        }
+
+        if (shot == 0)
+        {
+            _defense.Set(_io.ReadDefense("Your new defensive alignment is"));
+            _io.WriteLine();
+            return false;
+        }
+
+        var playContinues = shot >= 3;
+
+        if (shot == 1 || shot == 2)
+        {
+            _clock.Increment(scoreboard);
+            if (_clock.IsHalfTime) { return false; }
+
+            var ballContest = new BallContest(0.5f, "Shot is blocked.  Ball controlled by {0}.", _io, _random);
+
+            Resolve("Jump shot", _defense / 8)
+                .Do(0.341f, () => scoreboard.AddBasket("Shot is good"))
+                .Or(0.682f, () => ResolveShotOffTarget())
+                .Or(0.782f, () => ballContest.Resolve(scoreboard))
+                .Or(0.843f, () => ResolveFreeThrows(scoreboard, "Shooter is fouled.  Two shots."))
+                .Or(() => scoreboard.Turnover("Charging foul.  Dartmouth loses ball."));
+        }
+
+        while (playContinues)
+        {
+            _clock.Increment(scoreboard);
+            if (_clock.IsHalfTime) { return false; }
+
+            playContinues = false;
+
+            Resolve(shot == 3 ? "Lay up." : "Set shot.", _defense / 7)
+                .Do(0.4f, () => scoreboard.AddBasket("Shot is good.  Two points."))
+                .Or(0.7f, () => ResolveShotOffTheRim())
+                .Or(0.875f, () => ResolveFreeThrows(scoreboard, "Shooter fouled.  Two shots."))
+                .Or(0.925f, () => scoreboard.Turnover($"Shot blocked. {scoreboard.Visitors}'s ball."))
+                .Or(() => scoreboard.Turnover("Charging foul.  Dartmouth loses ball."));
+        }
+
+        return false;
+
+        void ResolveShotOffTarget() =>
+            Resolve("Shot is off target", 6 / _defense)
+                .Do(0.45f, () => Resolve("Dartmouth controls the rebound.")
+                    .Do(0.4f, () => playContinues = true)
+                    .Or(() =>
+                    {
+                        if (_defense == 6 && _random.NextFloat() > 0.6f)
+                        {
+                            scoreboard.Turnover();
+                            scoreboard.AddBasket($"Pass stolen by {scoreboard.Visitors} easy layup.");
+                            _io.WriteLine();
+                        }
+                        _io.Write("Ball passed back to you. ");
+                    }))
+                .Or(() => scoreboard.Turnover($"Rebound to {scoreboard.Visitors}"));
+
+        void ResolveShotOffTheRim() =>
+            Resolve("Shot is off the rim.")
+                .Do(2 / 3f, () => scoreboard.Turnover($"{scoreboard.Visitors} controls the rebound."))
+                .Or(() => Resolve("Dartmouth controls the rebound")
+                    .Do(0.4f, () => playContinues = true)
+                    .Or(() => _io.WriteLine("Ball passed back to you.")));
+    }
+}

07_Basketball/csharp/Plays/Play.cs

@@ -0,0 +1,32 @@
+using Games.Common.IO;
+using Games.Common.Randomness;
+
+namespace Basketball.Plays;
+
+internal abstract class Play
+{
+    private readonly IReadWrite _io;
+    private readonly IRandom _random;
+
+    public Play(IReadWrite io, IRandom random)
+    {
+        _io = io;
+        _random = random;
+    }
+
+    internal abstract bool Resolve(Scoreboard scoreboard);
+
+    protected void ResolveFreeThrows(Scoreboard scoreboard, string message) =>
+        Resolve(message)
+            .Do(0.49f, () => scoreboard.AddFreeThrows(2, "Shooter makes both shots."))
+            .Or(0.75f, () => scoreboard.AddFreeThrows(1, "Shooter makes one shot and misses one."))
+            .Or(() => scoreboard.AddFreeThrows(0, "Both shots missed."));
+
+    protected Probably Resolve(string message) => Resolve(message, 1f);
+
+    protected Probably Resolve(string message, float defenseFactor)
+    {
+        _io.WriteLine(message);
+        return new Probably(defenseFactor, _random);
+    }
+}

07_Basketball/csharp/Plays/VisitingTeamPlay.cs

@@ -0,0 +1,80 @@
+using Games.Common.IO;
+using Games.Common.Randomness;
+
+namespace Basketball.Plays;
+
+internal class VisitingTeamPlay : Play
+{
+    private readonly TextIO _io;
+    private readonly IRandom _random;
+    private readonly Clock _clock;
+    private readonly Defense _defense;
+
+    public VisitingTeamPlay(TextIO io, IRandom random, Clock clock, Defense defense)
+        : base(io, random)
+    {
+        _io = io;
+        _random = random;
+        _clock = clock;
+        _defense = defense;
+    }
+
+    internal override bool Resolve(Scoreboard scoreboard)
+    {
+        _clock.Increment(scoreboard);
+        if (_clock.IsHalfTime) { return false; }
+
+        _io.WriteLine();
+        var shot = _random.NextFloat(1, 3.5f);
+        var playContinues = shot > 2;
+
+        if (shot <= 2)
+        {
+            Resolve("Jump shot.", _defense / 8)
+                .Do(0.35f, () => scoreboard.AddBasket("Shot is good."))
+                .Or(0.75f, () => ResolveBadShot("Shot is off the rim.", _defense * 6))
+                .Or(0.9f, () => ResolveFreeThrows(scoreboard, "Player fouled.  Two shots."))
+                .Or(() => _io.WriteLine("Offensive foul.  Dartmouth's ball."));
+
+            _io.WriteLine();
+        }
+
+        while (playContinues)
+        {
+            playContinues = false;
+
+            Resolve(shot > 3 ? "Set shot." : "Lay up.", _defense / 7)
+                .Do(0.413f, () => scoreboard.AddBasket("Shot is good."))
+                .Or(() => ResolveBadShot("Shot is missed.", 6 / _defense));
+            _io.WriteLine();
+        }
+
+        return false;
+
+        void ResolveBadShot(string message, float defenseFactor) =>
+            Resolve("Shot is off the rim.", _defense * 6)
+                .Do(0.5f, () => scoreboard.Turnover("Dartmouth controls the rebound."))
+                .Or(() => ResolveVisitorsRebound());
+
+        void ResolveVisitorsRebound()
+        {
+            _io.Write($"{scoreboard.Visitors} controls the rebound.");
+            if (_defense == 6 && _random.NextFloat() <= 0.25f)
+            {
+                _io.WriteLine();
+                scoreboard.Turnover();
+                scoreboard.AddBasket("Ball stolen.  Easy lay up for Dartmouth.");
+                return;
+            }
+
+            if (_random.NextFloat() <= 0.5f)
+            {
+                _io.WriteLine();
+                _io.Write($"Pass back to {scoreboard.Visitors} guard.");
+                return;
+            }
+
+            playContinues = true;
+        }
+    }
+}

07_Basketball/csharp/Team.cs

@@ -1,8 +1,10 @@
+using Basketball.Plays;
+
 namespace Basketball;
 
-internal record Team(string Name, Func<Scoreboard, bool> PlayResolution)
+internal record Team(string Name, Play PlayResolver)
 {
     public override string ToString() => Name;
 
-    public bool ResolvePlay(Scoreboard scoreboard) => PlayResolution.Invoke(scoreboard);
+    public bool ResolvePlay(Scoreboard scoreboard) => PlayResolver.Resolve(scoreboard);
 }