Concurrent audio limit and volume limiter

Scripts/Misc/AudioManager.cs

@@ -0,0 +1,52 @@
+using System.Collections.Generic;
+using Godot;
+
+namespace Cirno.Scripts.Misc;
+
+public partial class AudioManager : Node2D
+{
+    public static AudioManager Instance { get; private set; }
+
+    [Export]
+    public int ConcurrentSounds { get; set; } = 3;
+    
+    private Dictionary<string, int> _audioDict = new Dictionary<string, int>();
+
+    public override void _Ready()
+    {
+        Instance = this;
+    }
+
+    public bool CanPlay(string audioName)
+    {
+        var item = _audioDict.TryGetValue(audioName, out int amount);
+        if (item) return amount < ConcurrentSounds;
+        _audioDict.Add(audioName, 0);
+        return true;
+    }
+
+    public bool Play(string audioName)
+    {
+        if (!CanPlay(audioName)) return false;
+        if (!_audioDict.ContainsKey(audioName))
+        {
+            _audioDict.Add(audioName, 0);
+        }
+        _audioDict[audioName] += 1;
+
+        return true;
+    }
+
+    public void Stop(string audioName)
+    {
+        if (_audioDict.ContainsKey(audioName))
+        {
+            _audioDict[audioName] -= 1;
+
+            if (_audioDict[audioName] < 0)
+            {
+                _audioDict[audioName] = 0;
+            }  
+        }
+    }
+}