Add Photon Tubes

84 Super Star Trek/csharp/Game.cs

@@ -79,15 +79,14 @@ namespace SuperStarTrek
             _galaxy = new Galaxy();
             _initialKlingonCount = _galaxy.KlingonCount;
 
-            _enterprise = new Enterprise(3000, random.GetCoordinate(), _output);
+            _enterprise = new Enterprise(3000, random.GetCoordinate(), _output, random);
             _enterprise
                 .Add(new ShortRangeSensors(_enterprise, _galaxy, this, _output))
                 .Add(new LongRangeSensors(_galaxy, _output))
+                .Add(new PhotonTubes(10, _enterprise, _output, _input))
                 .Add(new ShieldControl(_enterprise, _output, _input))
                 .Add(new DamageControl(_enterprise, _output));
 
-            var quadrant = new Quadrant(_galaxy[_currentQuadrant], _enterprise);
-
             _output.Write(Strings.Enterprise);
             _output.Write(
                 Strings.Orders,
@@ -100,6 +99,7 @@ namespace SuperStarTrek
 
             _input.WaitForAnyKeyButEnter("when ready to accept command");
 
+            var quadrant = _galaxy[_currentQuadrant].BuildQuadrant(_enterprise, random, _galaxy);
             _enterprise.Enter(quadrant, Strings.StartText);
         }
 

84 Super Star Trek/csharp/Input.cs

@@ -27,14 +27,14 @@ namespace SuperStarTrek
             return Console.ReadLine();
         }
 
-        public double GetNumber(string prompt)
+        public float GetNumber(string prompt)
         {
             _output.Prompt(prompt);
 
             while (true)
             {
                 var response = Console.ReadLine();
-                if (double.TryParse(response, out var value))
+                if (float.TryParse(response, out var value))
                 {
                     return value;
                 }
@@ -44,7 +44,7 @@ namespace SuperStarTrek
             }
         }
 
-        public bool TryGetNumber(string prompt, double minValue, double maxValue, out double value)
+        public bool TryGetNumber(string prompt, float minValue, float maxValue, out float value)
         {
             value = GetNumber($"{prompt} ({minValue}-{maxValue})");
 

84 Super Star Trek/csharp/Objects/Enterprise.cs

@@ -15,9 +15,10 @@ namespace SuperStarTrek.Objects
         private readonly Output _output;
         private readonly List<Subsystem> _systems;
         private readonly Dictionary<Command, Subsystem> _commandExecutors;
+        private readonly Random _random;
         private Quadrant _quadrant;
 
-        public Enterprise(int maxEnergy, Coordinates sector, Output output)
+        public Enterprise(int maxEnergy, Coordinates sector, Output output, Random random)
         {
             Sector = sector;
             TotalEnergy = _maxEnergy = maxEnergy;
@@ -25,6 +26,7 @@ namespace SuperStarTrek.Objects
             _systems = new List<Subsystem>();
             _commandExecutors = new Dictionary<Command, Subsystem>();
             _output = output;
+            _random = random;
         }
 
         public Coordinates Quadrant => _quadrant.Coordinates;
@@ -88,5 +90,37 @@ namespace SuperStarTrek.Objects
         }
 
         public override string ToString() => "<*>";
+
+        internal CommandResult TakeHit(Coordinates sector, int hitStrength)
+        {
+            _output.WriteLine($"{hitStrength} unit hit on Enterprise from sector {sector}");
+            ShieldControl.AbsorbHit(hitStrength);
+
+            if (ShieldControl.ShieldEnergy <= 0)
+            {
+                _output.WriteLine(Strings.Destroyed);
+                return CommandResult.GameOver;
+            }
+
+            _output.WriteLine($"      <Shields down to {ShieldControl.ShieldEnergy} units>");
+
+            if (hitStrength >= 20)
+            {
+                TakeDamage(hitStrength);
+            }
+
+            return CommandResult.Ok;
+        }
+
+        private void TakeDamage(double hitStrength)
+        {
+            var hitShieldRatio = hitStrength / ShieldControl.ShieldEnergy;
+            if (_random.GetDouble() > 0.6 || hitShieldRatio <= 0.02)
+            {
+                return;
+            }
+
+            _systems[_random.Get1To8Inclusive() - 1].TakeDamage(hitShieldRatio + 0.5 * _random.GetDouble());
+        }
     }
 }

84 Super Star Trek/csharp/Objects/Klingon.cs

@@ -1,14 +1,30 @@
+using SuperStarTrek.Commands;
+using SuperStarTrek.Space;
+
 namespace SuperStarTrek.Objects
 {
     internal class Klingon
     {
         private double _energy;
+        private Coordinates _sector;
+        private readonly Random _random;
 
-        public Klingon()
+        public Klingon(Coordinates sector, Random random)
         {
-            _energy = new Random().GetDouble(100, 300);
+            _sector = sector;
+            _random = random;
+            _energy = _random.GetDouble(100, 300);
         }
 
         public override string ToString() => "+K+";
+
+        public CommandResult FireOn(Enterprise enterprise)
+        {
+            var attackStrength = _random.GetDouble();
+            var hitStrength = (int)(_energy * (2 + attackStrength) / _sector.GetDistanceTo(enterprise.Sector));
+            _energy /= 3 + attackStrength;
+
+            return enterprise.TakeHit(_sector, hitStrength);
+        }
     }
 }

84 Super Star Trek/csharp/Objects/Starbase.cs

@@ -8,10 +8,11 @@ namespace SuperStarTrek.Objects
         private readonly Output _output;
         private readonly double _repairDelay;
 
-        public Starbase(Random random, Input input)
+        public Starbase(Random random, Input input, Output output)
         {
             _repairDelay = random.GetDouble() * 0.5;
             _input = input;
+            _output = output;
         }
 
         public override string ToString() => ">!<";
@@ -34,5 +35,7 @@ namespace SuperStarTrek.Objects
             repairTime = 0;
             return false;
         }
+
+        internal void ProtectEnterprise() => _output.WriteLine(Strings.Protected);
     }
 }

84 Super Star Trek/csharp/Resources/CourtMartial.txt

@@ -0,0 +1,3 @@
+
+Starfleet Command reviewing your record to consider
+court martial!

84 Super Star Trek/csharp/Resources/Protected.txt

@@ -0,0 +1 @@
+Starbase shields protect the Enterprise

84 Super Star Trek/csharp/Resources/RelievedOfCommand.txt

@@ -0,0 +1,3 @@
+
+That does it, Captain!!  You are hereby relieved of command
+and sentenced to 99 stardates at hard labor on Cygnus 12!!

84 Super Star Trek/csharp/Resources/Strings.cs

@@ -8,13 +8,16 @@ namespace SuperStarTrek.Resources
     {
         public static string CombatArea => GetResource();
         public static string Congratulations => GetResource();
+        public static string CourtMartial => GetResource();
         public static string Destroyed => GetResource();
         public static string EndOfMission => GetResource();
         public static string Enterprise => GetResource();
         public static string Instructions => GetResource();
         public static string LowShields => GetResource();
         public static string Orders => GetResource();
+        public static string Protected => GetResource();
         public static string RegionNames => GetResource();
+        public static string RelievedOfCommand => GetResource();
         public static string RepairEstimate => GetResource();
         public static string RepairPrompt => GetResource();
         public static string ReplayPrompt => GetResource();

84 Super Star Trek/csharp/Space/Coordinate.cs

@@ -24,6 +24,34 @@ namespace SuperStarTrek.Space
             throw new ArgumentOutOfRangeException(argumentName, value, "Must be 0 to 7 inclusive");
         }
 
+        private static bool IsValid(int value) => value >= 0 && value <= 7;
+
         public override string ToString() => $"{X+1} , {Y+1}";
+
+        internal void Deconstruct(out int x, out int y)
+        {
+            x = X;
+            y = Y;
+        }
+
+        internal static bool TryCreate(float x, float y, out Coordinates coordinates)
+        {
+            var roundedX = Round(x);
+            var roundedY = Round(y);
+
+            if (IsValid(roundedX) && IsValid(roundedY))
+            {
+                coordinates = new Coordinates(roundedX, roundedY);
+                return true;
+            }
+
+            coordinates = default;
+            return false;
+
+            int Round(float value) => (int)Math.Round(value, MidpointRounding.AwayFromZero);
+        }
+
+        internal float GetDistanceTo(Coordinates destination) =>
+            (float)Math.Sqrt(Math.Pow(X - destination.X, 2) + Math.Pow(Y - destination.Y, 2));
     }
 }

84 Super Star Trek/csharp/Space/Course.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 
 namespace SuperStarTrek.Space
 {
@@ -24,7 +25,7 @@ namespace SuperStarTrek.Space
             (0, 1)
         };
 
-        public Course(double direction)
+        public Course(float direction)
         {
             if (direction < 1 || direction > 9)
             {
@@ -44,7 +45,25 @@ namespace SuperStarTrek.Space
             DeltaY = baseCardinal.DeltaY + (nextCardinal.DeltaY - baseCardinal.DeltaY) * fractionalDirection;
         }
 
-        public double DeltaX { get; }
-        public double DeltaY { get; }
+        public float DeltaX { get; }
+        public float DeltaY { get; }
+
+        public IEnumerable<Coordinates> GetSectorsFrom(Coordinates start)
+        {
+            (double x, double y) = start;
+
+            while(true)
+            {
+                x += DeltaX;
+                y += DeltaY;
+
+                if (!Coordinates.TryCreate(x, y, out var coordinates))
+                {
+                    yield break;
+                }
+
+                yield return coordinates;
+            }
+        }
     }
 }

84 Super Star Trek/csharp/Space/Quadrant.cs

@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using SuperStarTrek.Commands;
 using SuperStarTrek.Objects;
+using SuperStarTrek.Resources;
 
 namespace SuperStarTrek.Space
 {
@@ -10,43 +12,47 @@ namespace SuperStarTrek.Space
         private readonly QuadrantInfo _info;
         private readonly Random _random;
         private readonly Dictionary<Coordinates, object> _sectors;
-        private readonly Coordinates _enterpriseSector;
+        private readonly Enterprise _enterprise;
         private readonly Coordinates _starbaseSector;
+        private readonly Galaxy _galaxy;
 
-        public Quadrant(QuadrantInfo info, Enterprise enterprise)
+        public Quadrant(QuadrantInfo info, Enterprise enterprise, Random random, Galaxy galaxy)
         {
             _info = info;
-            _random = new Random();
+            _random = random;
+            _galaxy = galaxy;
 
-            _enterpriseSector = enterprise.Sector;
-            _sectors = new Dictionary<Coordinates, object> { [enterprise.Sector] = enterprise };
-            PositionObject(() => new Klingon(), _info.KlingonCount);
+            _sectors = new() { [enterprise.Sector] = _enterprise = enterprise };
+            PositionObject(sector => new Klingon(sector, _random), _info.KlingonCount);
             if (_info.HasStarbase)
             {
-                _starbaseSector = PositionObject(() => new Starbase(_random, new Input(new Output())));
+                _starbaseSector = PositionObject(_ => new Starbase(_random, new Input(new Output()), new Output()));
             }
-            PositionObject(() => new Star(), _info.StarCount);
+            PositionObject(_ => new Star(), _info.StarCount);
         }
 
+        public object this[Coordinates coordinates] => _sectors.GetValueOrDefault(coordinates);
         public Coordinates Coordinates => _info.Coordinates;
         public bool HasKlingons => _info.KlingonCount > 0;
         public bool HasStarbase => _info.HasStarbase;
         public Starbase Starbase => HasStarbase ? (Starbase)_sectors[_starbaseSector] : null;
         public bool EnterpriseIsNextToStarbase =>
             _info.HasStarbase &&
-            Math.Abs(_enterpriseSector.X - _starbaseSector.X) <= 1 &&
-            Math.Abs(_enterpriseSector.Y - _starbaseSector.Y) <= 1;
+            Math.Abs(_enterprise.Sector.X - _starbaseSector.X) <= 1 &&
+            Math.Abs(_enterprise.Sector.Y - _starbaseSector.Y) <= 1;
+
+        private IEnumerable<Klingon> Klingons => _sectors.Values.OfType<Klingon>();
 
         public override string ToString() => _info.Name;
 
-        private Coordinates PositionObject(Func<object> objectFactory)
+        private Coordinates PositionObject(Func<Coordinates, object> objectFactory)
         {
             var sector = GetRandomEmptySector();
-            _sectors[sector] = objectFactory.Invoke();
+            _sectors[sector] = objectFactory.Invoke(sector);
             return sector;
         }
 
-        private void PositionObject(Func<object> objectFactory, int count)
+        private void PositionObject(Func<Coordinates, object> objectFactory, int count)
         {
             for (int i = 0; i < count; i++)
             {
@@ -54,6 +60,54 @@ namespace SuperStarTrek.Space
             }
         }
 
+        internal bool TorpedoCollisionAt(Coordinates coordinates, out string message, out bool gameOver)
+        {
+            gameOver = false;
+            message = default;
+
+            switch (_sectors.GetValueOrDefault(coordinates))
+            {
+                case Klingon _:
+                    _sectors.Remove(coordinates);
+                    _info.RemoveKlingon();
+                    message = "*** Klingon destroyed ***";
+                    gameOver = _galaxy.KlingonCount == 0;
+                    return true;
+
+                case Star _:
+                    message = $"Star at {coordinates} absorbed torpedo energy.";
+                    return true;
+
+                case Starbase _:
+                    _sectors.Remove(coordinates);
+                    _info.RemoveStarbase();
+                    message = "*** Starbase destroyed ***" +
+                        (_galaxy.StarbaseCount > 0 ? Strings.CourtMartial : Strings.RelievedOfCommand);
+                    gameOver = _galaxy.StarbaseCount == 0;
+                    return true;
+
+                default:
+                    return false;
+            }
+        }
+
+        internal CommandResult KlingonsFireOnEnterprise()
+        {
+            if (EnterpriseIsNextToStarbase && Klingons.Any())
+            {
+                Starbase.ProtectEnterprise();
+                return CommandResult.Ok;
+            }
+
+            foreach (var klingon in Klingons)
+            {
+                var result = klingon.FireOn(_enterprise);
+                if (result.IsGameOver) { return result; }
+            }
+
+            return CommandResult.Ok;
+        }
+
         private Coordinates GetRandomEmptySector()
         {
             while (true)

84 Super Star Trek/csharp/Space/QuadrantInfo.cs

@@ -1,3 +1,5 @@
+using SuperStarTrek.Objects;
+
 namespace SuperStarTrek.Space
 {
     internal class QuadrantInfo
@@ -39,12 +41,25 @@ namespace SuperStarTrek.Space
 
         internal void AddStarbase() => HasStarbase = true;
 
-        public string Scan()
+        internal Quadrant BuildQuadrant(Enterprise enterprise, Random random, Galaxy galaxy) =>
+            new(this, enterprise, random, galaxy);
+
+        internal string Scan()
         {
             _isKnown = true;
             return ToString();
         }
 
         public override string ToString() => _isKnown ? $"{KlingonCount}{(HasStarbase ? 1 : 0)}{StarCount}" : "***";
+
+        internal void RemoveKlingon()
+        {
+            if (KlingonCount > 0)
+            {
+                KlingonCount -= 1;
+            }
+        }
+
+        internal void RemoveStarbase() => HasStarbase = false;
     }
 }

84 Super Star Trek/csharp/Systems/DamageControl.cs

@@ -10,13 +10,13 @@ namespace SuperStarTrek.Systems
         private readonly Output _output;
 
         public DamageControl(Enterprise enterprise, Output output)
-            : base("Damage Control", Command.DAM)
+            : base("Damage Control", Command.DAM, output)
         {
             _enterprise = enterprise;
             _output = output;
         }
 
-        public override CommandResult ExecuteCommand(Quadrant quadrant)
+        protected override CommandResult ExecuteCommandCore(Quadrant quadrant)
         {
             if (IsDamaged)
             {

84 Super Star Trek/csharp/Systems/LongRangeSensors.cs

@@ -15,19 +15,15 @@ namespace SuperStarTrek.Systems
         private readonly Output _output;
 
         public LongRangeSensors(Galaxy galaxy, Output output)
-            : base("Long Range Sensors", Command.LRS)
+            : base("Long Range Sensors", Command.LRS, output)
         {
             _galaxy = galaxy;
             _output = output;
         }
 
-        public override CommandResult ExecuteCommand(Quadrant quadrant)
-        {
-            if (Condition < 0)
-            {
-                _output.WriteLine("Long Range Sensors are inoperable");
-            }
-            else
+        protected override bool CanExecuteCommand() => IsOperational("{name} are inoperable");
+
+        protected override CommandResult ExecuteCommandCore(Quadrant quadrant)
         {
             _output.WriteLine($"Long range scan for quadrant {quadrant.Coordinates}");
             _output.WriteLine("-------------------");
@@ -36,7 +32,6 @@ namespace SuperStarTrek.Systems
                 _output.WriteLine(": " + string.Join(" : ", quadrants.Select(q => q?.Scan() ?? "***")) + " :");
                 _output.WriteLine("-------------------");
             }
-            }
 
             return CommandResult.Ok;
         }

84 Super Star Trek/csharp/Systems/PhotonTubes.cs

@@ -0,0 +1,63 @@
+using SuperStarTrek.Commands;
+using SuperStarTrek.Objects;
+using SuperStarTrek.Space;
+
+namespace SuperStarTrek.Systems
+{
+    internal class PhotonTubes : Subsystem
+    {
+        private readonly int _tubeCount;
+        private readonly Enterprise _enterprise;
+        private readonly Output _output;
+        private readonly Input _input;
+
+        public PhotonTubes(int tubeCount, Enterprise enterprise, Output output, Input input)
+            : base("Photon Tubes", Command.TOR, output)
+        {
+            TorpedoCount = _tubeCount = tubeCount;
+            _enterprise = enterprise;
+            _output = output;
+            _input = input;
+        }
+
+        public int TorpedoCount { get; private set; }
+
+        protected override bool CanExecuteCommand() => HasTorpedoes() && IsOperational("{name} are not operational");
+
+        private bool HasTorpedoes()
+        {
+            if (TorpedoCount > 0) { return true; }
+
+            _output.WriteLine("All photon torpedoes expended");
+            return false;
+        }
+
+        protected override CommandResult ExecuteCommandCore(Quadrant quadrant)
+        {
+            if (!_input.TryGetNumber("Photon torpedo course", 1, 9, out var direction))
+            {
+                _output.WriteLine("Ensign Chekov reports, 'Incorrect course data, sir!'");
+                return CommandResult.Ok;
+            }
+
+            var isHit = false;
+            _output.WriteLine("Torpedo track:");
+            foreach (var sector in new Course(direction).GetSectorsFrom(_enterprise.Sector))
+            {
+                _output.WriteLine($"                {sector}");
+
+                if (quadrant.TorpedoCollisionAt(sector, out var message, out var gameOver))
+                {
+                    _output.WriteLine(message);
+                    isHit = true;
+                    if (gameOver) { return CommandResult.GameOver; }
+                    break;
+                }
+            }
+
+            if (!isHit) { _output.WriteLine("Torpedo missed!"); }
+
+            return quadrant.KlingonsFireOnEnterprise();
+        }
+    }
+}

84 Super Star Trek/csharp/Systems/ShieldControl.cs

@@ -11,7 +11,7 @@ namespace SuperStarTrek.Systems
         private readonly Input _input;
 
         public ShieldControl(Enterprise enterprise, Output output, Input input)
-            : base("Shield Control", Command.SHE)
+            : base("Shield Control", Command.SHE, output)
         {
             _enterprise = enterprise;
             _output = output;
@@ -20,21 +20,9 @@ namespace SuperStarTrek.Systems
 
         public double ShieldEnergy { get; private set; }
 
-        public override CommandResult ExecuteCommand(Quadrant quadrant)
-        {
-            if (Condition < 0)
-            {
-                _output.WriteLine("Shield Control inoperable");
-            }
-            else
-            {
-                UpdateShields();
-            }
+        protected override bool CanExecuteCommand() => IsOperational("{name} inoperable");
 
-            return CommandResult.Ok;
-        }
-
-        private void UpdateShields()
+        protected override CommandResult ExecuteCommandCore(Quadrant quadrant)
         {
             _output.WriteLine($"Energy available = {_enterprise.TotalEnergy}");
             var requested = _input.GetNumber($"Number of units to shields");
@@ -47,6 +35,8 @@ namespace SuperStarTrek.Systems
             {
                 _output.WriteLine("<SHIELDS UNCHANGED>");
             }
+
+            return CommandResult.Ok;
         }
 
         private bool Validate(double requested)
@@ -59,5 +49,7 @@ namespace SuperStarTrek.Systems
 
             return requested >= 0 && requested != ShieldEnergy;
         }
+
+        internal void AbsorbHit(int hitStrength) => ShieldEnergy -= hitStrength;
     }
 }

84 Super Star Trek/csharp/Systems/ShortRangeSensors.cs

@@ -17,7 +17,7 @@ namespace SuperStarTrek.Systems
         private readonly Output _output;
 
         public ShortRangeSensors(Enterprise enterprise, Galaxy galaxy, Game game, Output output)
-            : base("Short Range Sensors", Command.SRS)
+            : base("Short Range Sensors", Command.SRS, output)
         {
             _enterprise = enterprise;
             _galaxy = galaxy;
@@ -25,7 +25,7 @@ namespace SuperStarTrek.Systems
             _output = output;
         }
 
-        public override CommandResult ExecuteCommand(Quadrant quadrant)
+        protected override CommandResult ExecuteCommandCore(Quadrant quadrant)
         {
             if (_enterprise.IsDocked)
             {

84 Super Star Trek/csharp/Systems/Subsystem.cs

@@ -1,3 +1,4 @@
+using System;
 using SuperStarTrek.Commands;
 using SuperStarTrek.Space;
 
@@ -5,11 +6,14 @@ namespace SuperStarTrek.Systems
 {
     internal abstract class Subsystem
     {
-        protected Subsystem(string name, Command command)
+        private readonly Output _output;
+
+        protected Subsystem(string name, Command command, Output output)
         {
             Name = name;
             Command = command;
             Condition = 0;
+            _output = output;
         }
 
         public string Name { get; }
@@ -17,10 +21,33 @@ namespace SuperStarTrek.Systems
         public bool IsDamaged => Condition < 0;
         public Command Command { get; }
 
-        public abstract CommandResult ExecuteCommand(Quadrant quadrant);
-        public void Repair()
+        protected virtual bool CanExecuteCommand() => true;
+
+        protected bool IsOperational(string notOperationalMessage)
         {
-            if (Condition < 0) { Condition = 0; }
+            if (IsDamaged)
+            {
+                _output.WriteLine(notOperationalMessage.Replace("{name}", Name));
+                return false;
+            }
+
+            return true;
+        }
+
+        public CommandResult ExecuteCommand(Quadrant quadrant)
+            => CanExecuteCommand() ? ExecuteCommandCore(quadrant) : CommandResult.Ok;
+
+        protected abstract CommandResult ExecuteCommandCore(Quadrant quadrant);
+
+        public virtual void Repair()
+        {
+            if (IsDamaged) { Condition = 0; }
+        }
+
+        internal void TakeDamage(double damage)
+        {
+            Condition -= damage;
+            _output.WriteLine($"Damage Control reports, '{Name} damaged by the hit.'");
         }
     }
 }