token manager for projectile

managers/TokenManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Chickensoft.AutoInject;
+using Chickensoft.Introspection;
+using Godot;
+
+namespace Movementtests.managers;
+
+[GlobalClass, Meta(typeof(IAutoNode))]
+public partial class TokenManager : Node
+{
+    public override void _Notification(int what) => this.Notify(what);
+    
+    public record struct Token(ulong InstanceId, Action OnUse);
+    
+    private Dictionary<ulong, Token> Tokens { get; set; } = [];
+    public int TokenCount => Tokens.Count;
+    
+    private List<ulong> RequestQueue { get; set; } = [];
+    
+    public int MaxTokens { get; set;}
+
+    public void Initialize(int maxTokens)
+    {
+        MaxTokens = maxTokens;
+    }
+
+    public Token? RequestToken(Node owner)
+    {
+        if (Tokens.ContainsKey(owner.GetInstanceId())) return null;  // Already has a token
+        GD.Print(TokenCount);
+        if (RequestQueue.Contains(owner.GetInstanceId())) return null;  // Already in queue
+        
+        RequestQueue.Add(owner.GetInstanceId());
+        if (TokenCount >= MaxTokens) return null;  // Max tokens reached
+        if (RequestQueue.First() != owner.GetInstanceId()) return null;  // Next in line is not the requester
+        
+        RequestQueue.RemoveAt(0);
+        var token = new Token(owner.GetInstanceId(), () => UseToken(owner.GetInstanceId()));
+        Tokens.Add(token.InstanceId, token);
+        return token;
+    }
+    
+    public void UseToken(ulong instanceId)
+    {
+        Tokens.Remove(instanceId);
+    }
+}

managers/TokenManager.cs.uid

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+uid://ckrhgyv5lv6xa