Cleaned up asset loading system, and made progress on game engine structure.

.vscode/launch.json

@@ -4,6 +4,7 @@
    // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
    "version": "0.2.0",
    "configurations": [
+       
         {
             "name": ".NET Core Launch (console)",
             "type": "coreclr",

RecrownedGTK/AssetsSystem/AssetLoader.cs

@@ -9,11 +9,11 @@ namespace RecrownedGTK.AssetsSystem {
         public AssetLoader() {
             typeLoaders = new Dictionary<Type, ILoader>();
         }
-        public void AddLoaderResolver(Type type, ILoader loader) {
-            if (typeLoaders.ContainsKey(type)) {
-                throw new InvalidOperationException(String.Format("The type {0} already exists in this resolver.", type));
+        public void AddLoaderResolver(ILoader loader) {
+            if (typeLoaders.ContainsKey(loader.resultingType)) {
+                throw new InvalidOperationException(String.Format("The type {0} already exists in this resolver.", loader.resultingType));
             }
-            typeLoaders.Add(type, loader);
+            typeLoaders.Add(loader.resultingType, loader);
         }
         public void RemoveLoaderResolver(Type type) {
             if (!typeLoaders.ContainsKey(type)) {
@@ -21,6 +21,11 @@ namespace RecrownedGTK.AssetsSystem {
             }
             typeLoaders.Remove(type);
         }
+
+        public void RemoveLoaderResolver(ILoader loader) {
+            RemoveLoaderResolver(loader.resultingType);
+        }
+
         public IInfo Load(string path, Type type) {
             if (!typeLoaders.ContainsKey(type)) {
                 throw new InvalidOperationException(String.Format("The type {0} doesn't exist in this resolver.", type));

RecrownedGTK/AssetsSystem/AssetManager.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Threading;
@@ -11,16 +12,10 @@ namespace RecrownedGTK.AssetsSystem
     /// </summary>
     public class AssetManager
     {
-        private AssetLoader assetLoader;
-        readonly Queue<ContentData> queue;
-        Dictionary<string, IDisposable> assets;
-        /// <summary>
-        /// Path modifiers to change the path in which the content manager looks to load a file. Used for better organizing things while not needing to type entire path.
-        /// </summary>
+        public readonly AssetLoader assetLoader;
+        readonly Queue<AssetOutline> queue;
+        ConcurrentDictionary<string, IDisposable> assets;
         private readonly Dictionary<Type, IAssetPathResolver> contentPathModifier;
-        /// <summary>
-        /// Used when no path modifier is defined for that specific type.
-        /// </summary>
         public IAssetPathResolver normalPathModifier = new NormalAssetPathResolver();
         volatile float progress;
         volatile bool running;
@@ -36,13 +31,21 @@ namespace RecrownedGTK.AssetsSystem
         public float Progress { get { return progress; } }
 
         /// <summary>
-        /// Wraps the <see cref="ContentManager"/>.
+        /// Creates an asset manager with a default asset loader.
         /// </summary>
-        /// <param name="contentManager">The manager to wrap.</param>
-        public AssetManager()
+        public AssetManager() : this(new AssetLoader())
         {
-            assets = new Dictionary<string, IDisposable>();
-            queue = new Queue<ContentData>();
+        }
+
+        /// <summary>
+        /// A manager for the given asset loader.
+        /// The manager will asynchronously load assets and store them.
+        /// </summary>
+        /// <param name="assetLoader">The asset loader to use for loading.</param>
+        public AssetManager(AssetLoader assetLoader) {
+            this.assetLoader = assetLoader;
+            assets = new ConcurrentDictionary<string, IDisposable>();
+            queue = new Queue<AssetOutline>();
             contentPathModifier = new Dictionary<Type, IAssetPathResolver>();
         }
 
@@ -80,8 +83,7 @@ namespace RecrownedGTK.AssetsSystem
                 }
                 path = handler.Modify(assetName);
             }
-            assets.Add(assetName, assetLoader.Load(path, type).CreateUseable());
-
+            assets.TryAdd(assetName, assetLoader.Load(path, type).CreateUseable());
         }
 
         /// <summary>
@@ -110,7 +112,7 @@ namespace RecrownedGTK.AssetsSystem
             {
                 if (!assets.ContainsKey(assetName))
                 {
-                    queue.Enqueue(new ContentData(assetName, typeof(T), usePathModifier));
+                    queue.Enqueue(new AssetOutline(assetName, typeof(T), usePathModifier));
                     Debug.WriteLine("Queued asset: " + assetName);
                     Update();
                 }
@@ -145,7 +147,7 @@ namespace RecrownedGTK.AssetsSystem
             {
                 lock (queue)
                 {
-                    ContentData content = queue.Dequeue();
+                    AssetOutline content = queue.Dequeue();
                     Load(content.assetName, content.type, content.usePathModifier);
                     tasksCompleted++;
                     progress = (float)tasksCompleted / totalTasks;
@@ -169,7 +171,8 @@ namespace RecrownedGTK.AssetsSystem
                     {
                         ((IDisposable)assets[name]).Dispose();
                     }
-                    assets.Remove(name);
+                    IDisposable disposable = null;
+                    assets.TryRemove(name, out disposable);
                 }
             }
         }
@@ -201,13 +204,13 @@ namespace RecrownedGTK.AssetsSystem
                 Debug.WriteLine("Unloaded all assets.");
             }
         }
-        private struct ContentData
+        private struct AssetOutline
         {
             internal Type type;
             internal string assetName;
             internal bool usePathModifier;
 
-            public ContentData(string assetName, Type type, bool usePathModifier)
+            public AssetOutline(string assetName, Type type, bool usePathModifier)
             {
                 this.type = type;
                 this.assetName = assetName;

RecrownedGTK/AssetsSystem/Information/IInfo.cs

@@ -1,9 +1,12 @@
 using System;
 
 namespace RecrownedGTK.AssetsSystem.Information {
+    /// <summary>
+    /// Describes a serializable datatype.
+    /// Meant for use as a part of the asset pipeline.
+    /// </summary>
     public interface IInfo
     {
-        Type type {get;}
         IDisposable CreateUseable();
     }
 }

RecrownedGTK/AssetsSystem/Information/IInformation.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace RecrownedGTK.AssetsSystem.Information {
+    /// <summary>
+    /// An interface that describes an information class.
+    /// An information class is class that can produce a useable asset object.
+    /// In the asset pipeline, this is the second step, after loading the asset data.
+    /// </summary>
+    public interface IInformation
+    {
+    }
+}

RecrownedGTK/AssetsSystem/Information/TextureInfo.cs

@@ -5,7 +5,7 @@ namespace RecrownedGTK.AssetsSystem.Information {
     public struct TextureInfo : IInfo {
         public readonly byte[] textureData;
         int width, height;
-        public Type type => typeof(TextureData);
+        public Type resultingType => typeof(TextureData);
         public TextureInfo(int width, int height, byte[] textureData) {
             this.width = width;
             this.height = height;

RecrownedGTK/AssetsSystem/Loaders/ILoader.cs

@@ -3,6 +3,7 @@ using RecrownedGTK.AssetsSystem.Information;
 namespace RecrownedGTK.AssetsSystem.Loaders {
     public interface ILoader
     {
+        Type resultingType {get;}
         IInfo load(string path);
     }
 }

RecrownedGTK/AssetsSystem/Loaders/TextureLoader.cs

@@ -7,6 +7,8 @@ using RecrownedGTK.Graphics;
 namespace RecrownedGTK.AssetsSystem.Loaders {
     public class TextureLoader : ILoader
     {
+        public Type resultingType => typeof(TextureData);
+
         public IInfo load(string path)
         {
             int width;

RecrownedGTK/Game/GameEngine.cs

@@ -7,12 +7,8 @@ using RecrownedGTK.AssetsSystem;
 namespace RecrownedGTK.Game {
     public sealed class GameEngine : GameWindow {
         private IState state;
-        public readonly Preferences preferences;
-        public readonly AssetManager assets;
-        public GameEngine(IState initialState, Preferences preferences, AssetManager assets) : base() {
+        public GameEngine(IState initialState) : base() {
             this.state = initialState;
-            this.assets = assets;
-            this.preferences = preferences;
         }
 
         protected override void OnUpdateFrame(FrameEventArgs e) {
@@ -34,7 +30,7 @@ namespace RecrownedGTK.Game {
         }
         
         protected override void OnClosed(EventArgs e) {
-            if (state.CloseRequested()) {
+            if (!state.CloseRequested()) {
                 ((CancelEventArgs) e).Cancel = true;
             }
             base.OnClosed(e);

RecrownedGTK/Game/IState.cs

@@ -3,13 +3,47 @@ using OpenTK.Input;
 namespace RecrownedGTK.Game {
     public interface IState
     {
+        /// <summary>
+        /// Called when this state is going to be shown.
+        /// </summary>
+        /// <param name="gameManager">The instance of the game manager that is requesting this.</param>
+        /// <returns>True of it's ready to be displayed, false otherwise.</returns>
         bool Shown(GameEngine gameManager);
+
+        /// <summary>
+        /// Called on updating the state.
+        /// </summary>
+        /// <param name="time">The time that has passed since the last update in seconds.</param>
         void Update(double time);
 
+        /// <summary>
+        /// Called for rendering things.
+        /// </summary>
+        /// <param name="time">The time that has elapsed since last rendering in seconds.</param>
         void Render(double time);
+
+        /// <summary>
+        /// Called when this state is no longer being displayed.
+        /// </summary>
         void Hidden();
+
+        /// <summary>
+        /// Called when the game window size is updated.
+        /// </summary>
+        /// <param name="width">The new width</param>
+        /// <param name="height">The new height</param>
         void WindowSizeUpdate(int width, int height);
+
+        /// <summary>
+        /// When the game is being requested to be closed.
+        /// </summary>
+        /// <returns>True if closing is acceptable, or false otherwise.</returns>
         bool CloseRequested();
+
+        /// <summary>
+        /// Called every update in the case that there should be a state change.
+        /// </summary>
+        /// <returns>Another state if ready to change states, or null if not.</returns>
         IState ChangeState();
         
     }