Main game loop with Short Range Scan and Shield Control

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

@@ -0,0 +1,53 @@
+using SuperStarTrek.Objects;
+using SuperStarTrek.Space;
+
+namespace SuperStarTrek.Systems
+{
+    internal class ShieldControl : Subsystem
+    {
+        private readonly Enterprise _enterprise;
+        private readonly Output _output;
+        private readonly Input _input;
+
+        public ShieldControl(Enterprise enterprise, Output output, Input input)
+            : base("Shield Control", Command.SHE)
+        {
+            _enterprise = enterprise;
+            _output = output;
+            _input = input;
+        }
+
+        public double Energy { get; private set; }
+
+        public override void ExecuteCommand(Quadrant quadrant)
+        {
+            if (Condition < 0)
+            {
+                _output.WriteLine("Shield Control inoperable");
+                return;
+            }
+
+            _output.WriteLine($"Energy available = {_enterprise.TotalEnergy}");
+            var requested = _input.GetNumber($"Number of units to shields");
+
+            if (Validate(requested))
+            {
+                Energy = requested;
+                return;
+            }
+
+            _output.WriteLine("<SHIELDS UNCHANGED>");
+        }
+
+        private bool Validate(double requested)
+        {
+            if (requested > _enterprise.TotalEnergy)
+            {
+                _output.WriteLine("Shield Control reports, 'This is not the Federation Treasury.'");
+                return false;
+            }
+
+            return requested >= 0 && requested != Energy;
+        }
+    }
+}

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

@@ -0,0 +1,59 @@
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using SuperStarTrek.Objects;
+using SuperStarTrek.Resources;
+using SuperStarTrek.Space;
+
+namespace SuperStarTrek.Systems
+{
+    internal class ShortRangeSensors : Subsystem
+    {
+        private readonly Enterprise _enterprise;
+        private readonly Galaxy _galaxy;
+        private readonly Game _game;
+        private readonly Output _output;
+
+        public ShortRangeSensors(Enterprise enterprise, Galaxy galaxy, Game game, Output output)
+            : base("Short Range Sensors", Command.SRS)
+        {
+            _enterprise = enterprise;
+            _galaxy = galaxy;
+            _game = game;
+            _output = output;
+        }
+
+        public override void ExecuteCommand(Quadrant quadrant)
+        {
+            if (_enterprise.IsDocked)
+            {
+                _output.WriteLine(Strings.ShieldsDropped);
+            }
+
+            if (Condition < 0)
+            {
+                _output.WriteLine(Strings.ShortRangeSensorsOut);
+            }
+
+            _output.WriteLine("---------------------------------");
+            quadrant.GetDisplayLines()
+                .Zip(GetStatusLines(), (sectors, status) => $" {sectors}         {status}")
+                .ToList()
+                .ForEach(l => _output.WriteLine(l));
+            _output.WriteLine("---------------------------------");
+        }
+
+        public IEnumerable<string> GetStatusLines()
+        {
+            yield return $"Stardate           {_game.Stardate}";
+            yield return $"Condition          {_enterprise.Condition}";
+            yield return $"Quadrant           {_enterprise.Quadrant}";
+            yield return $"Sector             {_enterprise.Sector}";
+            yield return $"Photon torpedoes   {_enterprise.TorpedoCount}";
+            yield return $"Total energy       {Math.Ceiling(_enterprise.Energy)}";
+            yield return $"Shields            {(int)_enterprise.Shields}";
+            yield return $"Klingons remaining {_galaxy.KlingonCount}";
+        }
+    }
+}

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

@@ -0,0 +1,20 @@
+using SuperStarTrek.Space;
+
+namespace SuperStarTrek.Systems
+{
+    internal abstract class Subsystem
+    {
+        protected Subsystem(string name, Command command)
+        {
+            Name = name;
+            Command = command;
+            Condition = 0;
+        }
+
+        public string Name { get; }
+        public double Condition { get; }
+        public Command Command { get; }
+
+        public abstract void ExecuteCommand(Quadrant quadrant);
+    }
+}