From 98869c2d38ecd9c1177649751ea597faea7640d2 Mon Sep 17 00:00:00 2001
From: Harrison Deng <yunyangdeng@gmail.com>
Date: Fri, 10 Jul 2020 18:04:56 -0500
Subject: [PATCH] Added default path modifier, fixed how it references assets.

---
 .../AssetSystem/AssetManager.cs                | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/SlatedGameToolkit.Framework/AssetSystem/AssetManager.cs b/src/SlatedGameToolkit.Framework/AssetSystem/AssetManager.cs
index dd30ce2..ede5e84 100644
--- a/src/SlatedGameToolkit.Framework/AssetSystem/AssetManager.cs
+++ b/src/SlatedGameToolkit.Framework/AssetSystem/AssetManager.cs
@@ -23,6 +23,11 @@ namespace SlatedGameToolkit.Framework.AssetSystem {
     /// <returns>A loaded, useable asset.</returns>
     public delegate T LoadAsset<T>(string path, GLContext glContext) where T : IAssetUseable;
     public class AssetManager {
+        public IAssetUseable this[string key] {
+            get {
+                return this.assets[key];
+            }
+        }
         private readonly object assetThreadLock = new object();
         private Thread thread;
         private ConcurrentQueue<(string, GLContext)> loadables;
@@ -41,6 +46,12 @@ namespace SlatedGameToolkit.Framework.AssetSystem {
         /// <value>A dictionary of file extension associated with respective paths.</value>
         public ConcurrentDictionary<string, ModifyPath> PathModifiers { get; private set; }
 
+        /// <summary>
+        /// If this value is not null, the asset manager will modify paths according to this delegate if their is not a more appropriate modifier.
+        /// </summary>
+        /// <value>The delegate to use to modify the path.</value>
+        public ModifyPath DefaultPathModifier {get; set;}
+
         /// <summary>
         /// A dictionary containing associations between file extensions and their loaders.
         /// All file extensions will be requested in lower cases, and therefore, the extension key in this dictionary should also be all lowercase.
@@ -91,12 +102,15 @@ namespace SlatedGameToolkit.Framework.AssetSystem {
         /// <param name="glContext">The OpenGL context to associate with the loaded asset if the loaded asset requires it. May be null, in which the currently active context will be associated with it.</param>
         public void Load(string name, GLContext glContext = null) {
             if (glContext == null) glContext = WindowContextsManager.CurrentGL;
-            string ext = Path.GetExtension(name).ToLower();
+            string original = name;
+            string ext = Path.GetExtension(name).ToLower().Substring(1);
             if (PathModifiers.ContainsKey(ext)) {
                 name = PathModifiers[ext](name);
+            } else if (DefaultPathModifier != null) {
+                name = DefaultPathModifier(name);
             }
             if (!Loaders.ContainsKey(ext)) throw new FrameworkUsageException(string.Format("Failed to find associated loader for file \"{0}\" with extension \"{1}\".", name, ext));
-            assets[name] = Loaders[ext](name, glContext);
+            assets[original] = Loaders[ext](name, glContext);
         }
 
         /// <summary>