From 23c222338ad3f17ab33ed1450cc93b36e0af03fd Mon Sep 17 00:00:00 2001
From: CloneTrooper1019 <clonet1019@gmail.com>
Date: Sun, 3 Feb 2019 07:28:54 -0600
Subject: [PATCH] Added `this[]` overloads to Instance & RobloxFile.

---
 Core/Instance.cs                              | 28 +++++++++++++++++++
 Core/RobloxFile.cs                            |  9 ++++++
 DataTypes/CFrame.cs                           |  2 +-
 .../PropertyTokens/PhysicalProperties.cs      |  4 +--
 4 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/Core/Instance.cs b/Core/Instance.cs
index f03cdc2..3210d60 100644
--- a/Core/Instance.cs
+++ b/Core/Instance.cs
@@ -8,6 +8,7 @@ namespace RobloxFiles
     /// Describes an object in Roblox's DataModel hierarchy.
     /// Instances can have sets of properties loaded from *.rbxl/*.rbxm files.
     /// </summary>
+
     public class Instance
     {
         /// <summary>The ClassName of this Instance.</summary>
@@ -239,5 +240,32 @@ namespace RobloxFiles
         {
             Properties.Add(prop);
         }
+
+        /// <summary>
+        /// Treats the provided string as if you were indexing a specific child or descendant of this Instance.<para/>
+        /// The provided string can either be:<para/>
+        /// - The name of a child that is parented to this Instance. (  Example: game["Workspace"]  )<para/>
+        /// - A period-separated path to a descendant of this Instance. (  Example: game["Workspace.Terrain"]  )<para/>
+        /// This will throw an exception if any instance in the traversal is not found.
+        /// </summary>
+        public Instance this[string accessor]
+        {
+            get
+            {
+                Instance result = this;
+
+                foreach (string name in accessor.Split('.'))
+                {
+                    Instance next = result.FindFirstChild(name);
+
+                    if (next == null)
+                        throw new Exception(name + " is not a valid member of " + result.Name);
+
+                    result = next;
+                }
+
+                return result;
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/Core/RobloxFile.cs b/Core/RobloxFile.cs
index 0b866bc..589b2f0 100644
--- a/Core/RobloxFile.cs
+++ b/Core/RobloxFile.cs
@@ -78,5 +78,14 @@ namespace RobloxFiles
             byte[] buffer = File.ReadAllBytes(filePath);
             ReadFile(buffer);
         }
+
+        /// <summary>
+        /// Treats the provided string as if you were indexing a specific child or descendant of the `RobloxFile.Contents` folder.<para/>
+        /// The provided string can either be:<para/>
+        /// - The name of a child that is parented to RobloxFile.Contents (  Example: RobloxFile["Workspace"]  )<para/>
+        /// - A period (.) separated path to a descendant of RobloxFile.Contents (  Example: RobloxFile["Workspace.Terrain"]  )<para/>
+        /// This will throw an exception if any instance in the traversal is not found.
+        /// </summary>
+        public Instance this[string accessor] => Contents[accessor];
     }
 }
diff --git a/DataTypes/CFrame.cs b/DataTypes/CFrame.cs
index 16cdfca..499a5e3 100644
--- a/DataTypes/CFrame.cs
+++ b/DataTypes/CFrame.cs
@@ -327,7 +327,7 @@ namespace RobloxFiles.DataTypes
             return new float[] { m14, m24, m34, m11, m12, m13, m21, m22, m23, m31, m32, m33 };
         }
 
-        public float[] toEulerAnglesXYZ()
+        public float[] ToEulerAnglesXYZ()
         {
             float x = (float)Math.Atan2(-m23, m33);
             float y = (float)Math.Asin(m13);
diff --git a/XmlFormat/PropertyTokens/PhysicalProperties.cs b/XmlFormat/PropertyTokens/PhysicalProperties.cs
index d992886..05fac4f 100644
--- a/XmlFormat/PropertyTokens/PhysicalProperties.cs
+++ b/XmlFormat/PropertyTokens/PhysicalProperties.cs
@@ -25,6 +25,8 @@ namespace RobloxFiles.XmlFormat.PropertyTokens
             try
             {
                 bool custom = readBool("CustomPhysics");
+                prop.Type = PropertyType.PhysicalProperties;
+
                 if (custom)
                 {
                     prop.Value = new PhysicalProperties
@@ -35,8 +37,6 @@ namespace RobloxFiles.XmlFormat.PropertyTokens
                         readFloat("FrictionWeight"),
                         readFloat("ElasticityWeight")
                     );
-
-                    prop.Type = PropertyType.PhysicalProperties;
                 }
 
                 return true;