basic-computer-games/07_Basketball/csharp/Plays/VisitingTeamPlay.cs

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 Defense _defense;

    public VisitingTeamPlay(TextIO io, IRandom random, Clock clock, Defense defense)
        : base(io, random, clock)
    {
        _io = io;
        _random = random;
        _defense = defense;
    }

    internal override bool Resolve(Scoreboard scoreboard)
    {
        if (ClockIncrementsToHalfTime(scoreboard)) { return false; }

        _io.WriteLine();
        var shot = _random.NextShot();

        if (shot is JumpShot jumpShot)
        {
            var continuePlay = Resolve(jumpShot, scoreboard);
            _io.WriteLine();
            if (!continuePlay) { return false; }
        }

        while (true)
        {
            var continuePlay = Resolve(shot, scoreboard);
            _io.WriteLine();
            if (!continuePlay) { return false; }
        }
    }

    // The Resolve* methods resolve the probabilistic outcome of the current game state.
    // They return true if the Visiting team should continue the play and attempt a layup, false otherwise.
    private bool Resolve(JumpShot shot, Scoreboard scoreboard) =>
        Resolve(shot.ToString(), _defense / 8)
            .Do(0.35f, () => scoreboard.AddBasket("Shot is good."))
            .Or(0.75f, () => ResolveBadShot(scoreboard, "Shot is off the rim.", _defense * 6))
            .Or(0.9f, () => ResolveFreeThrows(scoreboard, "Player fouled.  Two shots."))
            .Or(() => _io.WriteLine($"Offensive foul.  {scoreboard.Home}'s ball."));

    private bool Resolve(Shot shot, Scoreboard scoreboard) =>
        Resolve(shot.ToString(), _defense / 7)
            .Do(0.413f, () => scoreboard.AddBasket("Shot is good."))
            .Or(() => ResolveBadShot(scoreboard, "Shot is missed.", 6 / _defense));

    private bool ResolveBadShot(Scoreboard scoreboard, string message, float defenseFactor) =>
        Resolve(message, defenseFactor)
            .Do(0.5f, () => scoreboard.Turnover($"{scoreboard.Home} controls the rebound."))
            .Or(() => ResolveVisitorsRebound(scoreboard));

    private bool ResolveVisitorsRebound(Scoreboard scoreboard)
    {
        _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 {scoreboard.Home}.");
            return false;
        }

        if (_random.NextFloat() <= 0.5f)
        {
            _io.WriteLine();
            _io.Write($"Pass back to {scoreboard.Visitors} guard.");
            return false;
        }

        return true;
    }
}