Limit the number of test players, add the Rail Gun

src/SpaceWars.Logic/Exceptions/TooManyPlayersException.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SpaceWars.Logic.Exceptions;
+
+[Serializable]
+public class TooManyPlayersException : Exception
+{
+    public TooManyPlayersException()
+    {
+    }
+
+    public TooManyPlayersException(string? message) : base(message)
+    {
+    }
+
+    public TooManyPlayersException(string? message, Exception? innerException) : base(message, innerException)
+    {
+    }
+
+    protected TooManyPlayersException(SerializationInfo info, StreamingContext context) : base(info, context)
+    {
+    }
+}

src/SpaceWars.Logic/Game.cs

@@ -1,11 +1,19 @@
 using SpaceWars.Logic.Actions;
+using SpaceWars.Logic.Exceptions;
 using SpaceWars.Logic.Weapons;
 
 namespace SpaceWars.Logic;
 
 public class Game
 {
-    private readonly List<IPurchasable> Shop = [new BasicCannon(), new PowerFist()];
+    public const int MaxPlayerCount = 100;
+
+    private readonly List<IPurchasable> Shop = [
+        new BasicCannon(), 
+        new PowerFist(),
+        new RailGun()
+    ];
+
     private readonly Dictionary<PlayerToken, Player> players;
     private readonly IInitialLocationProvider locationProvider;
     private ITimer? timer;
@@ -29,6 +37,11 @@ public Game(IInitialLocationProvider locationProvider, ITimer gameTimer = null,
 
     public GameJoinResult Join(string playerName)
     {
+        if(players.Count > MaxPlayerCount)
+        {
+            throw new TooManyPlayersException();
+        }
+
         var newPlayer = new Player(playerName, new Ship(locationProvider.GetNewInitialLocation(BoardWidth, BoardHeight)));
         players.Add(newPlayer.Token, newPlayer);
 

src/SpaceWars.Logic/Weapons/PowerFist.cs

@@ -11,4 +11,3 @@ public PowerFist() : base("Power Fist", "Close-range heavy-hitter.")
         PurchaseCost = 500;
     }
 }
-

src/SpaceWars.Logic/Weapons/RailGun.cs

@@ -0,0 +1,15 @@
+namespace SpaceWars.Logic.Weapons;
+
+public class RailGun : Weapon
+{
+    public RailGun() : base("Rail Gun", "Long-range weapon with high damage.")
+    {
+        Ranges = [
+            new WeaponRange(500, 100),
+            new WeaponRange(600, 50),
+            new WeaponRange(700, 25)
+        ];
+        MaxDamage = 10;
+        PurchaseCost = 1_050;
+    }
+}

src/SpaceWars.Web/Components/Pages/Hud.razor

@@ -38,7 +38,10 @@ else
             <div class="mb-2">
                 <PlayerActionQueue Player="Player" />
             </div>
-            <button class="btn btn-primary" @onclick="JoinTestPlayers">Join Test Players</button>
+            @if(showJoinTestPlayersButton)
+            {
+                <button class="btn btn-primary" @onclick="JoinTestPlayers">Join Test Players</button>
+            }
         </div>
         <div class="col-12 col-xl-6">
             <NearbyMap Game="@Game" CurrentPlayer="@Player" />
@@ -56,11 +59,14 @@ else
     public PlayerTokenModel TokenModel { get; set; } = new PlayerTokenModel();
     public PlayerToken? PlayerToken = null;
     public bool IsValidToken = false;
+    bool showJoinTestPlayersButton = true;
+    const int MaxTestPlayers = 20;
 
     protected override void OnInitialized()
     {
         GetPlayer();
         Game.Ticked += GameTicked;
+        showJoinTestPlayersButton = Game.PlayerLocations.Count() < MaxTestPlayers;
     }
 
     public void GameTicked(object? sender, EventArgs e)
@@ -115,7 +121,6 @@ else
         var query = QueryHelpers.ParseQuery(uri.Query);
         PlayerToken = null;
 
-
         if (query.TryGetValue("token", out var token))
         {
             if (string.IsNullOrWhiteSpace(token))
@@ -142,15 +147,16 @@ else
 
     public void JoinTestPlayers()
     {
-        for (int i = 0; i < 10; i++)
+        showJoinTestPlayersButton = Game.PlayerLocations.Count() < MaxTestPlayers;
+        var playersToJoin = MaxTestPlayers - Game.PlayerLocations.Count();
+        for (int i = 0; i < playersToJoin; i++)
         {
             Game.Join($"Test Player {i}");
-        }
+        }        
     }
 
     public class PlayerTokenModel
     {
         public string TokenValue { get; set; }
     }
-
 }

src/SpaceWars.Web/Controllers/GameController.cs

@@ -1,8 +1,8 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Options;
 using SpaceWars.Logic;
+using SpaceWars.Logic.Exceptions;
 using SpaceWars.Logic.Actions;
-using SpaceWars.Web.Exceptions;
 using SpaceWars.Web.Types;
 
 namespace SpaceWars.Web.Controllers;

src/SpaceWars.Web/SpaceWars.Web.csproj

@@ -29,4 +29,8 @@
     <ProjectReference Include="..\SpaceWars.Web.Types\SpaceWars.Web.Types.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Exceptions\" />
+  </ItemGroup>
+
 </Project>