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synced 2025-12-22 07:10:42 -08:00
Add probabilistic branching helper
This commit is contained in:
Andrew Cooper
@@ -32,16 +32,16 @@ internal class Game
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while (true)
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{
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_io.WriteLine("Center jump");
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scoreboard.Offense = ContestBall(0.4f, scoreboard, "{0} controls the tap");
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ContestBall(0.4f, scoreboard, "{0} controls the tap");
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_io.WriteLine();
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do
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while (scoreboard.Offense is not null)
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{
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var gameOver = scoreboard.Offense.ResolvePlay(scoreboard);
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if (gameOver) { return; }
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if (clock.IsHalfTime) { scoreboard.StartPeriod(); }
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} while (scoreboard.Offense is not null);
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}
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}
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}
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@@ -67,62 +67,23 @@ internal class Game
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if (shot == 0)
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{
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defense.Set(_io.ReadDefense("Your new defensive alignment is"));
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_io.WriteLine();
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return false;
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}
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var playContinues = false;
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var playContinues = shot >= 3;
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if (shot == 1 || shot == 2)
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{
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clock.Increment(scoreboard);
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if (clock.IsHalfTime) { return false; }
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_io.WriteLine("Jump shot");
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if (_random.NextFloat() <= 0.341f * defense / 8)
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{
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scoreboard.AddBasket("Shot is good");
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}
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else if (_random.NextFloat() <= 0.682f * defense / 8)
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{
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_io.WriteLine("Shot is off target");
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if (defense / 6 * _random.NextFloat() > 0.45f)
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{
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scoreboard.Turnover($"Rebound to {scoreboard.Visitors}");
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}
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else
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{
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_io.WriteLine("Dartmouth controls the rebound.");
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if (_random.NextFloat() <= 0.4f)
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{
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playContinues = true;
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}
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else
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{
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if (defense == 6)
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{
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if (_random.NextFloat() > 0.6f)
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{
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scoreboard.Turnover();
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scoreboard.AddBasket($"Pass stolen by {scoreboard.Visitors} easy layup.");
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_io.WriteLine();
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}
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}
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_io.Write("Ball passed back to you. ");
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}
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}
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}
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else if (_random.NextFloat() <= 0.782f * defense / 8)
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{
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scoreboard.Offense = ContestBall(0.5f, scoreboard, "Shot is blocked. Ball controlled by {0}.");
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}
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else if (_random.NextFloat() <= 0.843f * defense / 8)
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{
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FreeThrows(scoreboard, "Shooter is fouled. Two shots.");
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}
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else
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{
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scoreboard.Turnover("Charging foul. Dartmouth loses ball.");
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}
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Resolve("Jump shot", defense / 8)
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.Do(0.341f, () => scoreboard.AddBasket("Shot is good"))
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.Or(0.682f, () => ResolveShotOffTarget())
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.Or(0.782f, () => ContestBall(0.5f, scoreboard, "Shot is blocked. Ball controlled by {0}."))
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.Or(0.843f, () => ResolveFreeThrows(scoreboard, "Shooter is fouled. Two shots."))
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.Or(() => scoreboard.Turnover("Charging foul. Dartmouth loses ball."));
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}
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while (playContinues)
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@@ -132,47 +93,38 @@ internal class Game
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playContinues = false;
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_io.WriteLine(shot == 3 ? "Lay up." : "Set shot.");
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if (_random.NextFloat() <= 0.4f * defense / 7)
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{
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scoreboard.AddBasket("Shot is good. Two points.");
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}
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else if (_random.NextFloat() <= 0.7f * defense / 7)
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{
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_io.WriteLine("Shot is off the rim.");
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if (_random.NextFloat() <= 2 / 3f)
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{
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scoreboard.Turnover($"{scoreboard.Visitors} controls the rebound.");
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}
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else
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{
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_io.WriteLine("Dartmouth controls the rebound");
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if (_random.NextFloat() <= 0.4f)
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{
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playContinues = true;
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}
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else
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{
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_io.WriteLine("Ball passed back to you.");
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}
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}
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}
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else if (_random.NextFloat() <= 0.875f * defense / 7)
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{
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FreeThrows(scoreboard, "Shooter fouled. Two shots.");
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}
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else if (_random.NextFloat() <= 0.925f * defense / 7)
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{
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scoreboard.Turnover($"Shot blocked. {scoreboard.Visitors}'s ball.");
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}
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else
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{
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scoreboard.Turnover("Charging foul. Dartmouth loses ball.");
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}
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Resolve(shot == 3 ? "Lay up." : "Set shot.", defense / 7)
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.Do(0.4f, () => scoreboard.AddBasket("Shot is good. Two points."))
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.Or(0.7f, () => ResolveShotOffTheRim())
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.Or(0.875f, () => ResolveFreeThrows(scoreboard, "Shooter fouled. Two shots."))
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.Or(0.925f, () => scoreboard.Turnover($"Shot blocked. {scoreboard.Visitors}'s ball."))
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.Or(() => scoreboard.Turnover("Charging foul. Dartmouth loses ball."));
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}
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return false;
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void ResolveShotOffTarget() =>
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Resolve("Shot is off target", 6 / defense)
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.Do(0.45f, () => Resolve("Dartmouth controls the rebound.")
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.Do(0.4f, () => playContinues = true)
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.Or(() =>
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{
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if (defense == 6 && _random.NextFloat() > 0.6f)
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{
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scoreboard.Turnover();
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scoreboard.AddBasket($"Pass stolen by {scoreboard.Visitors} easy layup.");
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_io.WriteLine();
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}
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_io.Write("Ball passed back to you. ");
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}))
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.Or(() => scoreboard.Turnover($"Rebound to {scoreboard.Visitors}"));
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void ResolveShotOffTheRim() =>
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Resolve("Shot is off the rim.")
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.Do(2 / 3f, () => scoreboard.Turnover($"{scoreboard.Visitors} controls the rebound."))
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.Or(() => Resolve("Dartmouth controls the rebound")
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.Do(0.4f, () => playContinues = true)
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.Or(() => _io.WriteLine("Ball passed back to you.")));
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};
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private Func<Scoreboard, bool> VisitingTeamPlay(Clock clock, Defense defense) => scoreboard =>
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@@ -180,123 +132,79 @@ internal class Game
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clock.Increment(scoreboard);
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if (clock.IsHalfTime) { return false; }
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var playContinues = false;
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_io.WriteLine();
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var shot = _random.NextFloat(1, 3.5f);
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var playContinues = shot > 2;
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if (shot <= 2)
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{
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_io.WriteLine("Jump shot.");
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Resolve("Jump shot.", defense / 8)
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.Do(0.35f, () => scoreboard.AddBasket("Shot is good."))
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.Or(0.75f, () => ResolveBadShot("Shot is off the rim.", defense * 6))
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.Or(0.9f, () => ResolveFreeThrows(scoreboard, "Player fouled. Two shots."))
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.Or(() => _io.WriteLine("Offensive foul. Dartmouth's ball."));
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if (_random.NextFloat() <= 0.35f * defense / 8)
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{
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scoreboard.AddBasket("Shot is good.");
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}
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else if (_random.NextFloat() <= 0.75f * defense / 8)
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{
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_io.WriteLine("Shot is off the rim.");
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if (_random.NextFloat() <= 0.5f / defense * 6)
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{
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scoreboard.Turnover("Dartmouth controls the rebound.");
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}
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else
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{
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_io.WriteLine($"{scoreboard.Visitors} controls the rebound.");
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if (defense == 6)
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{
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if (_random.NextFloat() <= 0.25f)
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{
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scoreboard.Turnover();
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scoreboard.AddBasket("Ball stolen. Easy lay up for Dartmouth.");
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_io.WriteLine();
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return false;
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}
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}
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if (_random.NextFloat() <= 0.5f)
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{
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_io.WriteLine($"Pass back to {scoreboard.Visitors} guard.");
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return false;
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}
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playContinues = true;
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}
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}
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else if (_random.NextFloat() <= 0.9f * defense / 8)
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{
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FreeThrows(scoreboard, "Player fouled. Two shots.");
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}
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else
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{
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_io.WriteLine("Offensive foul. Dartmouth's ball.");
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}
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_io.WriteLine();
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}
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while (playContinues)
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{
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playContinues = false;
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_io.WriteLine(shot > 3 ? "Set shot." : "Lay up.");
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if (_random.NextFloat() <= 0.413f * defense / 7)
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{
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scoreboard.AddBasket("Shot is good.");
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}
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else
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{
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_io.WriteLine("Shot is missed.");
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if (_random.NextFloat() <= 0.5f * 6 / defense)
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{
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scoreboard.Turnover("Dartmouth controls the rebound.");
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}
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else
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{
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_io.WriteLine($"{scoreboard.Visitors} controls the rebound.");
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if (defense == 6)
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{
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if (_random.NextFloat() <= 0.25f)
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{
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scoreboard.Turnover();
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scoreboard.AddBasket("Ball stolen. Easy lay up for Dartmouth.");
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_io.WriteLine();
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return false;
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}
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}
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if (_random.NextFloat() <= 0.5f)
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{
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_io.WriteLine($"Pass back to {scoreboard.Visitors} guard.");
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return false;
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}
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playContinues = true;
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}
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}
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Resolve(shot > 3 ? "Set shot." : "Lay up.", defense / 7)
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.Do(0.413f, () => scoreboard.AddBasket("Shot is good."))
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.Or(() => ResolveBadShot("Shot is missed.", 6 / defense));
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_io.WriteLine();
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}
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return false;
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void ResolveBadShot(string message, float defenseFactor) =>
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Resolve("Shot is off the rim.", defense * 6)
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.Do(0.5f, () => scoreboard.Turnover("Dartmouth controls the rebound."))
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.Or(() => ResolveVisitorsRebound());
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void ResolveVisitorsRebound()
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{
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_io.Write($"{scoreboard.Visitors} controls the rebound.");
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if (defense == 6 && _random.NextFloat() <= 0.25f)
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{
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_io.WriteLine();
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scoreboard.Turnover();
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scoreboard.AddBasket("Ball stolen. Easy lay up for Dartmouth.");
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return;
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}
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if (_random.NextFloat() <= 0.5f)
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{
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_io.WriteLine();
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_io.Write($"Pass back to {scoreboard.Visitors} guard.");
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return;
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}
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playContinues = true;
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}
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};
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Team ContestBall(float probability, Scoreboard scoreboard, string messageFormat)
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void ContestBall(float probability, Scoreboard scoreboard, string messageFormat)
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{
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var winner = _random.NextFloat() <= probability ? scoreboard.Home : scoreboard.Visitors;
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scoreboard.Offense = winner;
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_io.WriteLine(messageFormat, winner);
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return winner;
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}
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void FreeThrows(Scoreboard scoreboard, string message)
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void ResolveFreeThrows(Scoreboard scoreboard, string message) =>
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Resolve(message)
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.Do(0.49f, () => scoreboard.AddFreeThrows(2, "Shooter makes both shots."))
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.Or(0.75f, () => scoreboard.AddFreeThrows(1, "Shooter makes one shot and misses one."))
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.Or(() => scoreboard.AddFreeThrows(0, "Both shots missed."));
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private Probably Resolve(string message) => Resolve(message, 1f);
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private Probably Resolve(string message, float defenseFactor)
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{
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_io.WriteLine(message);
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if (_random.NextFloat() <= 0.49)
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{
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scoreboard.AddFreeThrows(2, "Shooter makes both shots.");
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}
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else if (_random.NextFloat() <= 0.75)
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{
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scoreboard.AddFreeThrows(1, "Shooter makes one shot and misses one.");
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}
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else
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{
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scoreboard.AddFreeThrows(0, "Both shots missed.");
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}
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return new Probably(defenseFactor, _random);
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}
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}
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