WIP: OpenAL audio system.

.gitignore

@@ -50,3 +50,5 @@ Voile.Fmod/runtimes/**/*.so*
 # DocFX
 .cache
 /**/_site/
+
+*.dmp

TODO.md

@@ -7,6 +7,7 @@
 - ~~TextDataResource providing a convenient wrapper around TOML data files.~~
 - ~~Add documentation for common classes.~~
 - ~~Hot reloading of resources.~~
+- Separate render and update thread.
 
 ## I/O
 
@@ -14,7 +15,8 @@
 - ~~Reimplement unloading.~~
 - Finalize ResourceManager and ResourceLoader APIs for 1.0.
 - Add async API for ResourceManager.
-- Virtual file system.
+- ~~Virtual file system.~~
+- Custom PAK format using the VFS implementation.
 - (stretch goal) Streamed resource loading.
 
 ## Serialization
@@ -29,7 +31,7 @@
 - ~~API for drawing textured quads~~
 - ~~Camera API~~
 - Arbitrary mesh rendering API.
-- Create WebGPU renderer (StandardRenderer)
+- Create WebGPU renderer (StandardRenderSystem)
 
 ## Audio
 

TestGame/Resources/fire_effect.toml

@@ -17,4 +17,4 @@ LinearVelocityRandom = 0.5
 ScaleBegin = 0.1
 ScaleEnd = 5.0
 ColorBegin = [255, 162, 0]
-ColorEnd = [64, 64, 64, 0]
+ColorEnd = [0, 0, 0, 0]

TestGame/TestGame.cs

@@ -5,17 +5,21 @@ using Voile.Systems.Particles;
 using System.Numerics;
 using System.Diagnostics.CodeAnalysis;
 using Voile.Rendering;
+using Voile.OpenAL;
 
 public class TestGame : Game
 {
-    public override string Name => "Jump Adventures 2";
+    public override string Name => "Test Game";
     public override string ResourceRoot => "Resources/";
 
     public override void Initialize()
     {
         InitializeSystemsDefault();
 
+        _audioSystem = new OpenALSystem();
         _particleSystem = new ParticleSystem();
+
+        AddSystemToUpdate(_audioSystem);
         AddSystemToUpdate(_particleSystem);
     }
 
@@ -34,6 +38,7 @@ public class TestGame : Game
         }
 
         ResourceManager.TryLoad("icon.png", out _icon);
+        ResourceManager.TryLoad("sounds/test_sound_mono.ogg", out _sound);
 
         if (!ResourceManager.TryLoad("fire_effect.toml", out _fireEffect))
         {
@@ -43,22 +48,18 @@ public class TestGame : Game
 
     protected override void Ready()
     {
-        Input.AddInputMapping("reload", new InputAction[] { new KeyInputAction(KeyboardKey.R) });
+        Input.AddInputMapping("reload", new IInputAction[] { new KeyInputAction(KeyboardKey.R) });
         _emitterId = _particleSystem.CreateEmitter(Renderer.WindowSize / 2, _fireEffect);
     }
 
 
     protected override void Update(double deltaTime)
-    {
-
-    }
-
-    protected override void Render(double deltaTime)
     {
         if (Input.IsActionPressed("reload"))
         {
-            ResourceManager.Reload();
-            _particleSystem!.RestartEmitter(_emitterId);
+            // ResourceManager.Reload();
+            // _particleSystem!.RestartEmitter(_emitterId);
+            _audioSystem.PlaySound(_sound.Value, 1.0f);
         }
 
         if (Input.KeyboardKeyJustPressed(KeyboardKey.One))
@@ -70,7 +71,10 @@ public class TestGame : Game
         {
             _particleSystem.SetEmitterPosition(_emitterId, Input.GetMousePosition());
         }
+    }
 
+    protected override void Render(double deltaTime)
+    {
         Renderer.ClearBackground(Color.Black);
         foreach (var emitter in _particleSystem!.Emitters)
         {
@@ -105,8 +109,10 @@ public class TestGame : Game
     }
 
     [NotNull] private ParticleSystem _particleSystem;
+    private OpenALSystem _audioSystem;
     private int _emitterId;
     private ResourceRef<ParticleEmitterSettingsResource> _fireEffect;
     private ResourceRef<Font> _font;
+    private ResourceRef<Sound> _sound;
     private ResourceRef<Texture2d> _icon;
 }

TestGame/TestGame.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <OutputType>Exe</OutputType>
+        <OutputType>WinExe</OutputType>
         <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>disable</Nullable>
@@ -11,6 +11,7 @@
 
     <ItemGroup>
         <ProjectReference Include="../Voile/Voile.csproj" />
+        <ProjectReference Include="../Voile.OpenAL/Voile.OpenAL.csproj" />
     </ItemGroup>
 
     <ItemGroup>

Voile.OpenAL/OpenALSystem.cs

@@ -0,0 +1,59 @@
+using Voile.Audio;
+using Silk.NET.OpenAL;
+
+namespace Voile.OpenAL;
+
+public class OpenALSystem : AudioSystem
+{
+    public OpenALSystem()
+    {
+        _al = AL.GetApi();
+        _alc = ALContext.GetApi();
+
+        Init();
+    }
+
+    public override void PlaySound(Sound sound, float volume)
+    {
+        var buffer = CreateAlBuffer(sound.Buffer, sound.SampleRate, sound.Channel);
+        var source = CreateAlSource(buffer);
+        _al.SourcePlay(source);
+    }
+
+    public override void Update(double deltaTime)
+    {
+        throw new NotImplementedException();
+    }
+
+    private unsafe void Init()
+    {
+        _device = _alc.OpenDevice("");
+        _context = _alc.CreateContext(_device, null);
+        _alc.MakeContextCurrent(_context);
+    }
+
+    private uint CreateAlBuffer(ReadOnlyMemory<short> data, int sampleRate, SoundChannel channels)
+    {
+        var buffer = _al.GenBuffer();
+        var format = channels == SoundChannel.Mono ? BufferFormat.Mono16 : BufferFormat.Stereo16;
+
+        unsafe
+        {
+            _al.BufferData(buffer, format, data.Pin().Pointer, data.Length, sampleRate);
+        }
+
+        return buffer;
+    }
+
+    private uint CreateAlSource(uint buffer)
+    {
+        var source = _al.GenSource();
+        _al.SetSourceProperty(source, SourceInteger.Buffer, buffer);
+        return source;
+    }
+
+    private unsafe Device* _device;
+    private ALContext _alc;
+    private unsafe Context* _context;
+    private AL _al;
+}

Voile.OpenAL/Voile.OpenAL.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="../Voile/Voile.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Silk.NET.OpenAL" Version="2.21.0" />
+    </ItemGroup>
+</Project>

Voile.sln

@@ -13,19 +13,14 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Folder", "Solution
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestGame", "TestGame\TestGame.csproj", "{DBA85D7B-0A91-405B-9078-5463F49AE47E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Voile.OpenAL", "Voile.OpenAL\Voile.OpenAL.csproj", "{3ABB7D30-4B64-43AD-A14F-E532B12AFC60}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{393AA04F-A0DE-42F2-AAEC-6B2DCFB7A852}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{393AA04F-A0DE-42F2-AAEC-6B2DCFB7A852}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{393AA04F-A0DE-42F2-AAEC-6B2DCFB7A852}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{393AA04F-A0DE-42F2-AAEC-6B2DCFB7A852}.Release|Any CPU.Build.0 = Release|Any CPU
 		{DA4FDEDC-AA81-4336-844F-562F9E763974}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{DA4FDEDC-AA81-4336-844F-562F9E763974}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{DA4FDEDC-AA81-4336-844F-562F9E763974}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -34,5 +29,12 @@ Global
 		{DBA85D7B-0A91-405B-9078-5463F49AE47E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{DBA85D7B-0A91-405B-9078-5463F49AE47E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DBA85D7B-0A91-405B-9078-5463F49AE47E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3ABB7D30-4B64-43AD-A14F-E532B12AFC60}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3ABB7D30-4B64-43AD-A14F-E532B12AFC60}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3ABB7D30-4B64-43AD-A14F-E532B12AFC60}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3ABB7D30-4B64-43AD-A14F-E532B12AFC60}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
 	EndGlobalSection
 EndGlobal

Voile/Source/Audio/AudioBus.cs

@@ -1,7 +0,0 @@
-namespace Voile
-{
-    public class AudioBus
-    {
-
-    }
-}

Voile/Source/Audio/AudioEffect.cs

@@ -1,9 +0,0 @@
-namespace Voile
-{
-    public class AudioEffect { }
-
-    public class AudioEffectReverb : AudioEffect
-    {
-
-    }
-}

Voile/Source/Audio/AudioSystem.cs

@@ -1,40 +1,7 @@
-using Voile;
-
 namespace Voile.Audio;
 
-public abstract class AudioSystem : IStartableSystem, IUpdatableSystem, IDisposable
+public abstract class AudioSystem : IUpdatableSystem
 {
-    public void Start() => Initialize();
-
-    public void Update(double deltaTime) => Update();
-
-    public void Dispose()
-    {
-        Shutdown();
-        GC.SuppressFinalize(this);
-    }
-
-    protected abstract void Initialize();
-    protected abstract void Update();
-    protected abstract void Shutdown();
-    // BUS
-    public abstract void CreateBus(string busName);
-    public abstract void SetBusVolume(string busName, float volume);
-    public abstract float GetBusVolume(string busName);
-
-    // SOUND
-    public abstract void PlaySound(Sound sound, float pitch, float volume, string bus = "Master");
-    public void PlaySound(Sound sound, string bus = "Master") => PlaySound(sound, 1.0f, 1.0f, bus);
-
-    public SoundInstance CreateInstance(Sound sound)
-    {
-        var instance = new SoundInstance(this, sound);
-        return instance;
-    }
-
-    // EFFECTS
-    public abstract void AddBusEffect<T>(T effect, string bus = "Master") where T : AudioEffect;
-
-
-    private LehmerRandom _random = new LehmerRandom();
+    public abstract void Update(double deltaTime);
+    public abstract void PlaySound(Sound sound, float volume);
 }

Voile/Source/Audio/DummyAudioSystem.cs

@@ -1,48 +0,0 @@
-namespace Voile.Audio
-{
-    /// <summary>
-    /// Dummy audio system.
-    /// </summary>
-    public class DummyAudioSystem : AudioSystem
-    {
-        public override void AddBusEffect<T>(T effect, string bus = "Master")
-        {
-            return;
-        }
-
-        public override void CreateBus(string busName)
-        {
-            return;
-        }
-
-        public override float GetBusVolume(string busName)
-        {
-            return 0.0f;
-        }
-
-        protected override void Initialize()
-        {
-            return;
-        }
-
-        public override void SetBusVolume(string busName, float volume)
-        {
-            return;
-        }
-
-        protected override void Shutdown()
-        {
-            return;
-        }
-
-        protected override void Update()
-        {
-            return;
-        }
-
-        public override void PlaySound(Sound sound, float pitch, float volume, string bus = "Master")
-        {
-            return;
-        }
-    }
-}

Voile/Source/Audio/SoundInstance.cs

@@ -1,42 +0,0 @@
-namespace Voile.Audio
-{
-    public class SoundInstance
-    {
-        protected virtual Sound Sound => _sound;
-        public SoundInstance(AudioSystem backend, Sound sound)
-        {
-            _backend = backend;
-            _sound = sound;
-        }
-
-        public SoundInstance PitchVariation(float min, float max)
-        {
-            var random = new LehmerRandom();
-            _pitch = (float)random.NextDouble() * (max - min) + min;
-            return this;
-        }
-
-        public SoundInstance VolumeVariation(float min, float max)
-        {
-            var random = new LehmerRandom();
-            _volume = (float)random.NextDouble() * (max - min) + min;
-            return this;
-        }
-
-        public SoundInstance OnBus(string bus = "Master")
-        {
-            _bus = bus;
-            return this;
-        }
-
-        public void Play()
-        {
-            _backend.PlaySound(Sound, _pitch, _volume, _bus);
-        }
-
-        private readonly AudioSystem _backend;
-        private readonly Sound _sound;
-        private string _bus = "Master";
-        private float _pitch, _volume = 1.0f;
-    }
-}

Voile/Source/Game.cs

@@ -1,8 +1,10 @@
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
+using Voile.Audio;
 using Voile.Input;
 using Voile.Rendering;
 using Voile.Resources;
+using Voile.VFS;
 
 namespace Voile
 {
@@ -41,6 +43,8 @@ namespace Voile
         /// </summary>
         protected RenderSystem? Renderer { get; set; }
 
+        protected AudioSystem? AudioSystem { get; set; }
+
         /// <summary>
         /// Name of this game. Also used as a default window title.
         /// </summary>
@@ -88,6 +92,7 @@ namespace Voile
                 throw new NullReferenceException("No ResourceManager provided.");
             }
 
+            Mount();
             LoadResources();
             Ready();
             Run();
@@ -239,6 +244,12 @@ namespace Voile
             Renderer?.Start(renderSettings);
         }
 
+        private void Mount()
+        {
+            var resourceRootMount = new FileSystemMountPoint(ResourceRoot);
+            VirtualFileSystem.Mount(resourceRootMount);
+        }
+
         private List<IStartableSystem> _startableSystems = new();
         private List<IUpdatableSystem> _updatableSystems = new();
         private List<IUpdatableSystem> _renderableSystems = new();

Voile/Source/Input/InputAction.cs

@@ -1,13 +1,14 @@
 namespace Voile.Input
 {
-    public abstract class InputAction
+
+    public interface IInputAction
     {
-        public abstract bool IsDown(InputSystem inputHandler);
-        public abstract bool IsPressed(InputSystem inputHandler);
-        public abstract bool IsReleased(InputSystem inputHandler);
+        bool IsDown(InputSystem inputSystem);
+        bool IsPressed(InputSystem inputSystem);
+        bool IsReleased(InputSystem inputSystem);
     }
 
-    public class KeyInputAction : InputAction
+    public struct KeyInputAction : IInputAction
     {
         public KeyboardKey Key => _keyboardKey;
 
@@ -15,19 +16,19 @@ namespace Voile.Input
         {
             _keyboardKey = keyboardKey;
         }
-        public override bool IsDown(InputSystem inputHandler)
+        public bool IsDown(InputSystem inputSystem)
         {
-            return inputHandler.IsKeyboardKeyDown(_keyboardKey);
+            return inputSystem.IsKeyboardKeyDown(_keyboardKey);
         }
 
-        public override bool IsPressed(InputSystem inputHandler)
+        public bool IsPressed(InputSystem inputSystem)
         {
-            return inputHandler.KeyboardKeyJustPressed(_keyboardKey);
+            return inputSystem.KeyboardKeyJustPressed(_keyboardKey);
         }
 
-        public override bool IsReleased(InputSystem inputHandler)
+        public bool IsReleased(InputSystem inputSystem)
         {
-            return inputHandler.KeyboardKeyJustReleased(_keyboardKey);
+            return inputSystem.KeyboardKeyJustReleased(_keyboardKey);
         }
 
 

Voile/Source/Input/InputSystem.cs

@@ -12,11 +12,11 @@ namespace Voile.Input
         /// <summary>
         /// The list of all available input mappings, custom and built-in.
         /// </summary>
-        public static IReadOnlyDictionary<string, List<InputAction>> InputMappings => inputMappings;
+        public static IReadOnlyDictionary<string, List<IInputAction>> InputMappings => inputMappings;
 
         public void Start()
         {
-            inputMappings = new Dictionary<string, List<InputAction>>();
+            inputMappings = new Dictionary<string, List<IInputAction>>();
             CreateDefaultMappings();
         }
 
@@ -25,17 +25,82 @@ namespace Voile.Input
         public void Dispose() => GC.SuppressFinalize(this);
 
         public bool Handled { get => _handled; set => _handled = value; }
+
+        public bool IsActionDown(string action)
+        {
+            List<IInputAction>? mappings;
+
+            if (TryGetInputMappings(action, out mappings))
+            {
+                foreach (IInputAction inputAction in mappings)
+                    if (inputAction.IsDown(this)) return true;
+            }
+
+            return false;
+        }
+
+        public bool IsActionPressed(string action)
+        {
+            List<IInputAction>? mappings;
+
+            if (TryGetInputMappings(action, out mappings))
+            {
+                foreach (IInputAction inputAction in mappings)
+                    if (inputAction.IsPressed(this)) return true;
+            }
+
+            return false;
+        }
+
+        public bool IsActionReleased(string action)
+        {
+            List<IInputAction>? mappings;
+
+            if (TryGetInputMappings(action, out mappings))
+            {
+                foreach (IInputAction inputAction in mappings)
+                    if (inputAction.IsReleased(this)) return true;
+            }
+
+            return false;
+        }
+
+        public Vector2 GetInputDirection(KeyboardKey leftKey, KeyboardKey rightKey, KeyboardKey upKey, KeyboardKey downKey)
+        {
+            Vector2 dir = Vector2.Zero;
+
+            if (IsKeyboardKeyDown(leftKey))
+                dir.X -= 1;
+            if (IsKeyboardKeyDown(rightKey))
+                dir.X += 1;
+            if (IsKeyboardKeyDown(upKey))
+                dir.Y -= 1;
+            if (IsKeyboardKeyDown(downKey))
+                dir.Y += 1;
+
+            return dir == Vector2.Zero ? Vector2.Zero : Vector2.Normalize(dir);
+        }
+        public Vector2 GetInputDirection(string leftAction, string rightAction, string upAction, string downAction)
+        {
+            Vector2 dir = Vector2.Zero;
+
+            if (IsActionDown(leftAction))
+                dir.X -= 1;
+            if (IsActionDown(rightAction))
+                dir.X += 1;
+            if (IsActionDown(upAction))
+                dir.Y -= 1;
+            if (IsActionDown(downAction))
+                dir.Y += 1;
+
+            return dir == Vector2.Zero ? Vector2.Zero : Vector2.Normalize(dir);
+        }
+
         public abstract bool IsKeyboardKeyDown(KeyboardKey key);
         public abstract bool KeyboardKeyJustPressed(KeyboardKey key);
         public abstract bool KeyboardKeyJustReleased(KeyboardKey key);
-        public abstract Vector2 GetInputDirection(KeyboardKey leftKey, KeyboardKey rightKey, KeyboardKey upKey, KeyboardKey downKey);
-        public abstract Vector2 GetInputDirection(string leftAction, string rightAction, string upAction, string downAction);
+
         public abstract int GetCharPressed();
-
-        public abstract bool IsActionDown(string action);
-        public abstract bool IsActionPressed(string action);
-        public abstract bool IsActionReleased(string action);
-
         public abstract bool IsMouseButtonDown(MouseButton button);
         public abstract float GetMouseWheelMovement();
         public abstract void SetMousePosition(Vector2 position);
@@ -46,48 +111,47 @@ namespace Voile.Input
 
         public void SetAsHandled() => _handled = true;
 
-        public void AddInputMapping(string actionName, IEnumerable<InputAction> inputActions)
+        public void AddInputMapping(string actionName, IEnumerable<IInputAction> inputActions)
         {
             inputMappings.Add(actionName, inputActions.ToList());
         }
 
         private void CreateDefaultMappings()
         {
-            AddInputMapping("up", new InputAction[] {
+            AddInputMapping("up", [
                 new KeyInputAction(KeyboardKey.W),
                 new KeyInputAction(KeyboardKey.Up),
-            });
-            AddInputMapping("down", new InputAction[] {
+            ]);
+            AddInputMapping("down", [
                 new KeyInputAction(KeyboardKey.S),
                 new KeyInputAction(KeyboardKey.Down),
-            });
-            AddInputMapping("left", new InputAction[] {
+            ]);
+            AddInputMapping("left", [
                 new KeyInputAction(KeyboardKey.A),
                 new KeyInputAction(KeyboardKey.Left),
-            });
-            AddInputMapping("right", new InputAction[] {
+            ]);
+            AddInputMapping("right", [
                 new KeyInputAction(KeyboardKey.D),
                 new KeyInputAction(KeyboardKey.Right),
-            });
+            ]);
         }
 
-        protected bool TryGetInputMappings(string forAction, [NotNullWhen(true)] out IEnumerable<InputAction>? inputActions)
+        protected bool TryGetInputMappings(string forAction, [NotNullWhen(true)] out List<IInputAction>? inputActions)
         {
-            var contains = inputMappings.ContainsKey(forAction);
             inputActions = null;
 
-            if (!contains)
+            if (inputMappings.TryGetValue(forAction, out var actions))
             {
-                _logger.Error($"The action \"{forAction}\" is not present in the input mappings!");
-                return false;
+                inputActions = actions;
+                return true;
             }
 
-            inputActions = inputMappings[forAction];
+            _logger.Error($"The action \"{forAction}\" is not present in the input mappings!");
 
-            return true;
+            return false;
         }
 
-        protected static Dictionary<string, List<InputAction>> inputMappings = new();
+        protected static Dictionary<string, List<IInputAction>> inputMappings = new();
         private bool _handled;
         private Logger _logger = new(nameof(InputSystem));
     }

Voile/Source/Input/RaylibInputSystem.cs

@@ -13,39 +13,6 @@ namespace Voile.Input
             return Raylib.GetCharPressed();
         }
 
-        public override Vector2 GetInputDirection(KeyboardKey leftKey, KeyboardKey rightKey, KeyboardKey upKey, KeyboardKey downKey)
-        {
-            Vector2 dir = Vector2.Zero;
-
-            if (IsKeyboardKeyDown(leftKey))
-                dir += new Vector2(-1, 0);
-            if (IsKeyboardKeyDown(rightKey))
-                dir += new Vector2(1, 0);
-            if (IsKeyboardKeyDown(upKey))
-                dir += new Vector2(0, -1);
-            if (IsKeyboardKeyDown(downKey))
-                dir += new Vector2(0, 1);
-
-            return dir == Vector2.Zero ? Vector2.Zero : Vector2.Normalize(dir);
-        }
-
-        public override Vector2 GetInputDirection(string leftAction, string rightAction, string upAction, string downAction)
-        {
-            Vector2 dir = Vector2.Zero;
-
-            if (IsActionDown(leftAction))
-                dir += new Vector2(-1, 0);
-            if (IsActionDown(rightAction))
-                dir += new Vector2(1, 0);
-            if (IsActionDown(upAction))
-                dir += new Vector2(0, -1);
-            if (IsActionDown(downAction))
-                dir += new Vector2(0, 1);
-
-
-            return dir == Vector2.Zero ? Vector2.Zero : Vector2.Normalize(dir);
-        }
-
         public override Vector2 GetMousePosition()
         {
             return Raylib.GetMousePosition();
@@ -61,45 +28,6 @@ namespace Voile.Input
             Raylib.HideCursor();
         }
 
-        public override bool IsActionDown(string action)
-        {
-            IEnumerable<InputAction>? mappings;
-
-            if (TryGetInputMappings(action, out mappings))
-            {
-                foreach (InputAction inputAction in mappings)
-                    if (inputAction.IsDown(this)) return true;
-            }
-
-            return false;
-        }
-
-        public override bool IsActionPressed(string action)
-        {
-            IEnumerable<InputAction>? mappings;
-
-            if (TryGetInputMappings(action, out mappings))
-            {
-                foreach (InputAction inputAction in mappings)
-                    if (inputAction.IsPressed(this)) return true;
-            }
-
-            return false;
-        }
-
-        public override bool IsActionReleased(string action)
-        {
-            IEnumerable<InputAction>? mappings;
-
-            if (TryGetInputMappings(action, out mappings))
-            {
-                foreach (InputAction inputAction in mappings)
-                    if (inputAction.IsReleased(this)) return true;
-            }
-
-            return false;
-        }
-
         public override bool IsKeyboardKeyDown(KeyboardKey key)
         {
             Raylib_cs.KeyboardKey rayKey = (Raylib_cs.KeyboardKey)key;

Voile/Source/Rendering/RaylibRenderSystem.cs

@@ -39,10 +39,10 @@ namespace Voile.Rendering
             ConfigFlags flags = 0;
 
             // MSAA
-            flags |= settings.Msaa == Msaa.Msaa4x ? ConfigFlags.FLAG_MSAA_4X_HINT : 0;
+            flags |= settings.Msaa == Msaa.Msaa4x ? ConfigFlags.Msaa4xHint : 0;
 
             // VSync
-            flags |= settings.UseVSync ? ConfigFlags.FLAG_VSYNC_HINT : 0;
+            flags |= settings.UseVSync ? ConfigFlags.VSyncHint : 0;
 
             _fullscreen = settings.Fullscreen;
 
@@ -59,13 +59,13 @@ namespace Voile.Rendering
 
         public override void CreateWindow(WindowSettings windowSettings)
         {
-            Raylib.SetTraceLogLevel(TraceLogLevel.LOG_NONE);
+            Raylib.SetTraceLogLevel(TraceLogLevel.None);
 
             _defaultWindowSettings = windowSettings;
 
             _windowSize = windowSettings.Size;
             ConfigFlags windowFlags = 0;
-            windowFlags |= windowSettings.Resizable ? ConfigFlags.FLAG_WINDOW_RESIZABLE : 0;
+            windowFlags |= windowSettings.Resizable ? ConfigFlags.ResizableWindow : 0;
 
             _windowTitle = windowSettings.Title;
 
@@ -180,10 +180,10 @@ namespace Voile.Rendering
         {
             Raylib.DrawRectanglePro(new Rectangle()
             {
-                x = transformPosition.X,
-                y = transformPosition.Y,
-                width = size.X,
-                height = size.Y
+                X = transformPosition.X,
+                Y = transformPosition.Y,
+                Width = size.X,
+                Height = size.Y
             }, transformPivot, transformRotation, VoileColorToRaylibColor(color));
         }
 
@@ -252,28 +252,17 @@ namespace Voile.Rendering
             return Raylib.GetCurrentMonitor();
         }
 
-        private unsafe void LoadFont(Font font)
+        private void LoadFont(Font font)
         {
             Raylib_cs.Font fontRay;
 
-            ReadOnlySpan<char> ext = ".ttf"; // TODO: don't use a hardcoded extension.
-            Span<byte> extBytes = new byte[Encoding.Default.GetByteCount(ext) + 1];
-            Encoding.Default.GetBytes(ext, extBytes);
-            int fontChars = 2048; // TODO: control this dynamically to not load the entire font.
+            string ext = ".ttf"; // TODO: don't use a hardcoded extension.
+            int fontChars = 250; // TODO: control this dynamically to not load the entire font.
 
-            unsafe
-            {
-                fixed (byte* extP = extBytes)
-                {
-                    fixed (byte* bufferP = font.Buffer)
-                    {
-                        fontRay = Raylib.LoadFontFromMemory((sbyte*)extP, bufferP, (int)font.BufferSize, font.Size, null, fontChars);
-                    }
-                }
-            }
+            fontRay = Raylib.LoadFontFromMemory(ext, font.Buffer, font.Size, null, fontChars);
 
-            Raylib.GenTextureMipmaps(ref fontRay.texture);
-            Raylib.SetTextureFilter(fontRay.texture, TextureFilter.TEXTURE_FILTER_BILINEAR);
+            Raylib.GenTextureMipmaps(ref fontRay.Texture);
+            Raylib.SetTextureFilter(fontRay.Texture, TextureFilter.Bilinear);
 
             _fontPool.Add(fontRay);
 
@@ -288,14 +277,15 @@ namespace Voile.Rendering
             {
                 fixed (void* dataPtr = texture.Buffer)
                 {
-                    image.data = dataPtr;
+                    image.Data = dataPtr;
                 }
             }
 
-            image.width = texture.Width;
-            image.height = texture.Height;
-            image.mipmaps = texture.Mipmaps;
-            image.format = (PixelFormat)texture.Format;
+
+            image.Width = texture.Width;
+            image.Height = texture.Height;
+            image.Mipmaps = texture.Mipmaps;
+            image.Format = (PixelFormat)texture.Format;
 
             Texture2D rayTexture;
 

Voile/Source/Resources/DataReaders/TomlDataReader.cs

@@ -7,7 +7,7 @@ namespace Voile.Resources.DataReaders;
 /// <summary>
 /// Reads key/value data from a TOML file.
 /// </summary>
-public class TomlDataReader : IStreamDataReader, IDataValidator, IStreamKeyValueGetter, IDisposable
+public class TomlDataReader : IStreamDataReader, IDataValidator, IStreamKeyValueGetter
 {
     public string ExpectedHeader { get; private set; } = string.Empty;
     public TomlDataReader(string expectedHeader)
@@ -17,14 +17,7 @@ public class TomlDataReader : IStreamDataReader, IDataValidator, IStreamKeyValue
 
     public void Read(Stream data)
     {
-        if (data is not FileStream fs)
-        {
-            throw new ArgumentException("Toml data reader only supports file streams.");
-        }
-
-        _fs = fs;
-
-        using (var reader = new StreamReader(_fs))
+        using (var reader = new StreamReader(data))
         {
             _table = TOML.Parse(reader);
             _valid = _table.HasKey(ExpectedHeader);
@@ -231,12 +224,6 @@ public class TomlDataReader : IStreamDataReader, IDataValidator, IStreamKeyValue
 
     public bool Valid() => _valid;
 
-    public void Dispose()
-    {
-        _fs?.Dispose();
-    }
-
     private TomlTable? _table;
-    private FileStream? _fs;
     private bool _valid;
 }

Voile/Source/Resources/Loaders/FontLoader.cs

@@ -1,4 +1,6 @@
 
+using Voile.VFS;
+
 namespace Voile.Resources;
 
 public class FontLoader : ResourceLoader<Font>
@@ -11,9 +13,14 @@ public class FontLoader : ResourceLoader<Font>
 
     protected override Font LoadResource(string path)
     {
-        byte[] fileBuffer = File.ReadAllBytes(path);
+        using Stream stream = VirtualFileSystem.Read(path);
+
+        byte[] fileBuffer = new byte[stream.Length];
+        int bytesRead = stream.Read(fileBuffer, 0, fileBuffer.Length);
         var result = new Font(path, fileBuffer);
-        result.BufferSize = fileBuffer.Length;
+
+        result.BufferSize = bytesRead;
+
         return result;
     }
 }

Voile/Source/Resources/Loaders/ResourceLoader.cs

@@ -24,7 +24,6 @@ namespace Voile.Resources
             var resource = LoadResource(path);
             var guid = Guid.NewGuid();
 
-
             var loadedResources = ResourceManager.LoadedResources;
             var oldResourceGuid = loadedResources.FirstOrDefault(loadedResource => loadedResource.Value.Path == path).Key;
 
@@ -46,6 +45,7 @@ namespace Voile.Resources
         {
             foreach (var loadedResource in ResourceManager.LoadedResources)
             {
+                if (loadedResource.Value is not T) continue;
                 Load(loadedResource.Value.Path);
             }
         }

Voile/Source/Resources/Loaders/SoundLoader.cs

@@ -1,4 +1,5 @@
 using StbVorbisSharp;
+using Voile.VFS;
 
 namespace Voile.Resources
 {
@@ -6,7 +7,7 @@ namespace Voile.Resources
     {
         public override IEnumerable<string> SupportedExtensions => new string[]
         {
-            "ogg"
+            ".ogg"
         };
 
         protected override Sound LoadResource(string path)
@@ -14,9 +15,11 @@ namespace Voile.Resources
             Vorbis vorbis;
             Sound result;
 
-            var fileBuffer = File.ReadAllBytes(path);
-            vorbis = Vorbis.FromMemory(fileBuffer);
+            using var stream = VirtualFileSystem.Read(path);
+            byte[] fileBuffer = new byte[stream.Length];
+            int bytesRead = stream.Read(fileBuffer, 0, fileBuffer.Length);
 
+            vorbis = Vorbis.FromMemory(fileBuffer);
             vorbis.SubmitBuffer();
 
             if (vorbis.Decoded == 0)
@@ -27,18 +30,9 @@ namespace Voile.Resources
 
             var audioShort = vorbis.SongBuffer;
             int length = vorbis.Decoded * vorbis.Channels;
-            byte[] audioData = new byte[length * 2];
 
-            for (int i = 0; i < length; i++)
-            {
-                if (i * 2 >= audioData.Length) break;
-
-                var b1 = (byte)(audioShort[i] >> 8);
-                var b2 = (byte)(audioShort[i] & 256);
-
-                audioData[i * 2] = b2;
-                audioData[i * 2 + 1] = b1;
-            }
+            short[] audioData = new short[length];
+            Array.Copy(audioShort, audioData, length);
 
             result = new Sound(path, audioData)
             {

Voile/Source/Resources/Loaders/Texture2dLoader.cs

@@ -1,5 +1,6 @@
 using Voile.Resources;
 using StbImageSharp;
+using Voile.VFS;
 
 namespace Voile
 {
@@ -18,7 +19,7 @@ namespace Voile
         protected override Texture2d LoadResource(string path)
         {
             ImageResult image;
-            using (var stream = File.OpenRead(path))
+            using (var stream = VirtualFileSystem.Read(path))
             {
                 image = ImageResult.FromStream(stream, ColorComponents.RedGreenBlueAlpha);
             }

Voile/Source/Resources/ResourceManager.cs

@@ -1,8 +1,8 @@
 using System.Collections.Concurrent;
 using System.Diagnostics.CodeAnalysis;
-using System.Linq.Expressions;
 
 using Voile.Utils;
+using Voile.VFS;
 
 namespace Voile.Resources
 {
@@ -92,10 +92,7 @@ namespace Voile.Resources
             T? resource = default;
             result = null;
 
-            var fullPath = Path.Combine(ResourceRoot, path);
-
-            // TODO: don't check if file doesn't exist in the file system, make it more generic but for now it's fine
-            if (!File.Exists(fullPath))
+            if (!VirtualFileSystem.FileExists(path))
             {
                 _logger.Error($"File at \"{path}\" doesn't exist!");
                 return false;
@@ -108,7 +105,7 @@ namespace Voile.Resources
                 return false;
             }
 
-            var extension = Path.GetExtension(fullPath);
+            var extension = Path.GetExtension(path);
             var hasExtension = loader.SupportedExtensions.Any(ext => ext == extension);
 
             if (!hasExtension)
@@ -116,7 +113,7 @@ namespace Voile.Resources
                 _logger.Error($"Extension {extension} is not supported!");
             }
 
-            var resourceGuid = loader.Load(fullPath);
+            var resourceGuid = loader.Load(path);
 
             if (!GetResource(resourceGuid, out T? loadedResource))
             {

Voile/Source/Resources/Sound.cs

@@ -1,17 +1,17 @@
 namespace Voile
 {
     /// <summary>
-    /// Represents raw audio samples. 
+    /// Represents raw audio samples in 16-bit PCM format. 
     /// </summary>
     public class Sound : Resource
     {
         public SoundChannel Channel { get; set; }
         public int SampleRate { get; set; }
 
-        public byte[]? Buffer { get; private set; }
+        public short[]? Buffer { get; private set; }
         public long BufferSize { get; set; }
 
-        public Sound(string path, byte[] buffer) : base(path)
+        public Sound(string path, short[] buffer) : base(path)
         {
             Buffer = buffer;
         }

Voile/Source/Systems/ParticleSystem.cs

@@ -1,7 +1,7 @@
 using System.Numerics;
 using Voile.Resources;
 using Voile.Resources.DataReaders;
-using Voile.Utils;
+using Voile.VFS;
 
 namespace Voile.Systems.Particles;
 
@@ -62,28 +62,26 @@ public class ParticleEmitterSettingsResourceLoader : ResourceLoader<ParticleEmit
     {
         var settings = new ParticleEmitterSettings();
 
-        using (var reader = new TomlDataReader("ParticleEmitterSettings"))
-        {
-            reader.Read(File.Open(path, FileMode.Open));
+        var reader = new TomlDataReader("ParticleEmitterSettings");
+        reader.Read(VirtualFileSystem.Read(path));
 
-            settings.Local = reader.GetBool("Local", true);
-            settings.MaxParticles = reader.GetInt("MaxParticles");
-            settings.EmitRadius = reader.GetInt("EmitRadius");
-            settings.LifeTime = reader.GetFloat("LifeTime", 1.0f);
-            settings.Explosiveness = reader.GetFloat("Explosiveness");
-            settings.Direction = reader.GetVector2("Direction", Vector2.Zero);
-            settings.LinearVelocity = reader.GetFloat("LinearVelocity", 980f);
-            settings.AngularVelocity = reader.GetFloat("AngularVelocity");
-            settings.AngularVelocityRandom = reader.GetFloat("AngularVelocityRandom", 1.0f);
-            settings.LinearVelocityRandom = reader.GetFloat("LinearVelocityRandom", 1.0f);
-            settings.Gravity = reader.GetVector2("Gravity", Vector2.UnitY * 980f);
-            settings.ScaleBegin = reader.GetFloat("ScaleBegin");
-            settings.ScaleEnd = reader.GetFloat("ScaleEnd");
-            settings.ColorBegin = reader.GetColor("ColorBegin", Color.White);
-            settings.ColorEnd = reader.GetColor("ColorEnd", Color.Black);
-            settings.LinearVelocityDamping = reader.GetFloat("LinearVelocityDamping", 1.0f);
-            settings.AngularVelocityDamping = reader.GetFloat("AngularVelocityDamping", 1.0f);
-        }
+        settings.Local = reader.GetBool("Local", true);
+        settings.MaxParticles = reader.GetInt("MaxParticles");
+        settings.EmitRadius = reader.GetInt("EmitRadius");
+        settings.LifeTime = reader.GetFloat("LifeTime", 1.0f);
+        settings.Explosiveness = reader.GetFloat("Explosiveness");
+        settings.Direction = reader.GetVector2("Direction", Vector2.Zero);
+        settings.LinearVelocity = reader.GetFloat("LinearVelocity", 980f);
+        settings.AngularVelocity = reader.GetFloat("AngularVelocity");
+        settings.AngularVelocityRandom = reader.GetFloat("AngularVelocityRandom", 1.0f);
+        settings.LinearVelocityRandom = reader.GetFloat("LinearVelocityRandom", 1.0f);
+        settings.Gravity = reader.GetVector2("Gravity", Vector2.UnitY * 980f);
+        settings.ScaleBegin = reader.GetFloat("ScaleBegin");
+        settings.ScaleEnd = reader.GetFloat("ScaleEnd");
+        settings.ColorBegin = reader.GetColor("ColorBegin", Color.White);
+        settings.ColorEnd = reader.GetColor("ColorEnd", Color.Black);
+        settings.LinearVelocityDamping = reader.GetFloat("LinearVelocityDamping", 1.0f);
+        settings.AngularVelocityDamping = reader.GetFloat("AngularVelocityDamping", 1.0f);
 
         return new ParticleEmitterSettingsResource(path, settings);
     }

Voile/Source/VFS/FileSystemMountPoint.cs

@@ -0,0 +1,69 @@
+using Voile.Utils;
+
+namespace Voile.VFS;
+
+/// <summary>
+/// A file in the OS file system.
+/// </summary>
+public class FileSystemFile : VirtualFile
+{
+    public FileSystemFile(string path)
+    {
+        _fsPath = path;
+    }
+
+    public override Stream GetStream()
+    {
+        return new FileStream(_fsPath, FileMode.Open, FileAccess.Read);
+    }
+
+    private string _fsPath;
+}
+
+/// <summary>
+/// A <see cref="IVirtualMountPoint"/> implementation for an OS file system.
+/// </summary>
+public class FileSystemMountPoint : IVirtualMountPoint
+{
+    public int Order => int.MaxValue;
+
+    public FileSystemMountPoint(string path)
+    {
+        _fsPath = path;
+    }
+
+    public void Mount()
+    {
+        _logger.Info($"Mounting from file system path \"{_fsPath}\".");
+
+        int rootLength = _fsPath.Length;
+        var files =
+            Directory.GetFiles(_fsPath, "*", SearchOption.AllDirectories)
+                .Select(p => p.Remove(0, rootLength))
+                .ToList();
+
+        foreach (string file in files)
+        {
+            var relativePath = NormalizePath(file);
+            var fullPath = NormalizePath(Path.Combine(_fsPath, file));
+            _files[relativePath] = new FileSystemFile(fullPath);
+        }
+    }
+
+    public VirtualFile GetFile(string path) => _files[path];
+
+    public IDictionary<string, VirtualFile> GetFiles() => _files;
+
+    public bool HasFile(string path) => _files.ContainsKey(path);
+
+    private string NormalizePath(string path)
+    {
+        return path
+            .Replace(@"\\", @"\")
+            .Replace(@"\", @"/");
+    }
+
+    private Logger _logger = new(nameof(FileSystemMountPoint));
+    private string _fsPath;
+    private Dictionary<string, VirtualFile> _files = new();
+}

Voile/Source/VFS/IVirtualFile.cs

@@ -0,0 +1,6 @@
+namespace Voile.VFS;
+
+public abstract class VirtualFile
+{
+    public abstract Stream GetStream();
+}

Voile/Source/VFS/IVirtualMountPoint.cs

@@ -0,0 +1,33 @@
+namespace Voile.VFS;
+
+/// <summary>
+/// A virtual mounting point.
+/// </summary>
+public interface IVirtualMountPoint
+{
+    /// <summary>
+    /// Order of mounting for this mount point. Lower values indicate higher priority for lookup.
+    /// </summary>
+    int Order { get; }
+    /// <summary>
+    /// Mounts this <see cref="IVirtualMountPoint"/>.
+    /// </summary>
+    void Mount();
+    /// <summary>
+    /// Gets a file.
+    /// </summary>
+    /// <param name="path">Relative path to the file.</param>
+    /// <returns>An instance of <see cref="VirtualFile"/> if the file exists; otherwise, an exception is thrown.</returns>
+    VirtualFile GetFile(string path);
+    /// <summary>
+    /// Gets all files available at this <see cref="IVirtualMountPoint"/>.
+    /// </summary>
+    /// <returns>A dictionary mapping a relative path to an instance of a <see cref="VirtualFile"/>.</returns>
+    IDictionary<string, VirtualFile> GetFiles();
+    /// <summary>
+    /// Determines whether a file exists at the given relative path within this mount point.
+    /// </summary>
+    /// <param name="path">The relative path of the file to check.</param>
+    /// <returns><c>true</c> if the file exists; otherwise, <c>false</c>.</returns>
+    bool HasFile(string path);
+}

Voile/Source/VFS/VirtualFileSystem.cs

@@ -0,0 +1,59 @@
+namespace Voile.VFS;
+
+/// <summary>
+/// A virtual file system that provides an abstract interface for manipulating files from various sources.
+/// </summary>
+public static class VirtualFileSystem
+{
+    /// <summary>
+    /// Mounts a <see cref="IVirtualMountPoint"/>.
+    /// This will make files available for this mount point accessible.
+    /// </summary>
+    /// <param name="mountPoint"></param>
+    public static void Mount(IVirtualMountPoint mountPoint)
+    {
+        mountPoint.Mount();
+        _mounts.Add(mountPoint);
+
+        _mounts = _mounts.OrderBy(mount => mount.Order).ToList();
+    }
+
+    /// <summary>
+    /// Check if file exists or not.
+    /// </summary>
+    /// <param name="path">Relative path to the file.</param>
+    /// <returns></returns>
+    public static bool FileExists(string path)
+    {
+        return _mounts.Any(mount => mount.HasFile(path));
+    }
+
+    /// <summary>
+    /// Gets a <see cref="VirtualFile"/> from path.
+    /// </summary>
+    /// <param name="path">Relative path to the file.</param>
+    /// <returns>A virtual file at the path.</returns>
+    public static VirtualFile GetFile(string path)
+    {
+        var mount = _mounts.FirstOrDefault(mount => mount.HasFile(path));
+        if (mount == null)
+        {
+            throw new FileNotFoundException($"File \"{path}\" was not found in any mounted point.");
+        }
+
+        return mount.GetFile(path);
+    }
+
+    /// <summary>
+    /// Reads a file.
+    /// </summary>
+    /// <param name="path">Relative path to the file.</param>
+    /// <returns>A readable stream.</returns>
+    public static Stream Read(string path)
+    {
+        var file = GetFile(path);
+        return file.GetStream();
+    }
+
+    private static List<IVirtualMountPoint> _mounts = new();
+}

Voile/Voile.csproj

@@ -12,18 +12,14 @@
         <PackageReference Include="Silk.NET.WebGPU" Version="2.20.0" />
         <PackageReference Include="Silk.NET.WebGPU.Native.WGPU" Version="2.20.0" />
         <PackageReference Include="Silk.NET.Windowing" Version="2.20.0" />
+        <PackageReference Include="SoLoud.NET" Version="2020.2.7.1" />
         <PackageReference Include="Tommy" Version="3.1.2" />
-        <PackageReference Include="Voile.Fmod" Version="0.2.2.8" />
         <PackageReference Include="ImGui.NET" Version="1.89.4" />
-        <PackageReference Include="Raylib-cs" Version="4.2.0.1" />
+        <PackageReference Include="Raylib-cs" Version="6.1.1" />
         <PackageReference Include="SharpFont" Version="4.0.1" />
         <PackageReference Include="SixLabors.Fonts" Version="1.0.0-beta19" />
         <PackageReference Include="StbImageSharp" Version="2.27.13" />
         <PackageReference Include="StbVorbisSharp" Version="1.22.4" />
     </ItemGroup>
 
-    <Target Name="BuildFmod" BeforeTargets="BeforeBuild">
-        <MSBuild Projects="../Voile.Fmod/Voile.Fmod.csproj" Targets="Restore;Build" />
-    </Target>
-
 </Project>