Update minimum version to 6.0 LTS for 4.x packages (#1112)

* Update docs

* Update package manifests

* Remove #if UNITY_6000_0_OR_NEWER from code

* Update auto-updated Unity files

* Update to latest gitignore

From https://github.com/github/gitignore/blob/main/Unity.gitignore

* Update CHANGELOGs

Author: keveleigh

README.md

@@ -32,7 +32,7 @@
 
 ### Long Term Support
 
-* Minimum requirements: OpenXR, Unity 2022.3 LTS, Unity’s XR Interaction Toolkit 3.0.
+* Minimum requirements: OpenXR, Unity 6.0 LTS, Unity’s XR Interaction Toolkit 3.0.
 
 ## Packages
 

UnityProjects/.gitignore

@@ -0,0 +1,108 @@
+# This .gitignore file should be placed at the root of your Unity project directory
+#
+# Get latest from https://github.com/github/gitignore/blob/main/Unity.gitignore
+#
+.utmp/
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/[Ll]ogs/
+/[Uu]ser[Ss]ettings/
+*.log
+
+# By default unity supports Blender asset imports, *.blend1 blender files do not need to be commited to version control.
+*.blend1
+*.blend1.meta
+
+# MemoryCaptures can get excessive in size.
+# They also could contain extremely sensitive data
+/[Mm]emoryCaptures/
+
+# Recordings can get excessive in size
+/[Rr]ecordings/
+
+# Uncomment this line if you wish to ignore the asset store tools plugin
+# /[Aa]ssets/AssetStoreTools*
+
+# Autogenerated Jetbrains Rider plugin
+/[Aa]ssets/Plugins/Editor/JetBrains*
+# Jetbrains Rider personal-layer settings
+*.DotSettings.user
+
+# Visual Studio cache directory
+.vs/
+
+# Gradle cache directory
+.gradle/
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.slnx
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+*.mdb
+*.opendb
+*.VC.db
+
+# Unity3D generated meta files
+*.pidb.meta
+*.pdb.meta
+*.mdb.meta
+
+# Unity3D generated file on crash reports
+sysinfo.txt
+
+# Mono auto generated files
+mono_crash.*
+
+# Builds
+*.apk
+*.aab
+*.unitypackage
+*.unitypackage.meta
+*.app
+
+# Crashlytics generated file
+crashlytics-build.properties
+
+# TestRunner generated files
+InitTestScene*.unity*
+
+# Addressables default ignores, before user customizations
+/ServerData
+/[Aa]ssets/StreamingAssets/aa*
+/[Aa]ssets/AddressableAssetsData/link.xml*
+/[Aa]ssets/Addressables_Temp*
+# By default, Addressables content builds will generate addressables_content_state.bin
+# files in platform-specific subfolders, for example:
+# /Assets/AddressableAssetsData/OSX/addressables_content_state.bin
+/[Aa]ssets/AddressableAssetsData/*/*.bin*
+
+# Visual Scripting auto-generated files
+/[Aa]ssets/Unity.VisualScripting.Generated/VisualScripting.Flow/UnitOptions.db
+/[Aa]ssets/Unity.VisualScripting.Generated/VisualScripting.Flow/UnitOptions.db.meta
+/[Aa]ssets/Unity.VisualScripting.Generated/VisualScripting.Core/Property Providers
+/[Aa]ssets/Unity.VisualScripting.Generated/VisualScripting.Core/Property Providers.meta
+
+# Auto-generated scenes by play mode tests
+/[Aa]ssets/[Ii]nit[Tt]est[Ss]cene*.unity*
+
+# Project Specific List
+/[Aa]ssets/[Bb]uild[Rr]eports*
+/[Aa]ssets/[Oo]culus*
+/[Aa]ssets/[Ss]amples*
+/[Aa]ssets/TextMesh Pro*
+*.pfx
+*.pfx.meta

UnityProjects/MRTKDevTemplate/.gitignore

@@ -251,12 +251,10 @@ private static void PatchHands(bool addDebug)
                         visualizer.JointMaterial = AssetDatabase.LoadAssetAtPath<Material>(AssetDatabase.GUIDToAssetPath(HandJointMaterialGuid));
                         visualizer.JointMesh = Resources.GetBuiltinResource<Mesh>("Cube.fbx");
                     }
-#if UNITY_6000_0_OR_NEWER
                     else
                     {
                         PrefabUtility.RemoveUnusedOverrides(new[] { leftHandVisualizer }, UnityEditor.InteractionMode.UserAction);
                     }
-#endif
                     PrefabUtility.SaveAsPrefabAsset(leftHandVisualizer, leftHandPath);
                 }
                 PrefabUtility.UnloadPrefabContents(leftHandVisualizer);

UnityProjects/MRTKDevTemplate/Assets/BuildAssets/BuildApp.cs

@@ -1,18 +1,15 @@
 // Copyright (c) Mixed Reality Toolkit Contributors
 // Licensed under the BSD 3-Clause
 
-#if UNITY_6000_0_OR_NEWER
 using UnityEditor;
 using UnityEditor.PackageManager;
 using UnityEditor.PackageManager.Requests;
 using UnityEngine;
-#endif
 
 namespace MixedReality.Toolkit.Examples.Demos.Editor
 {
     internal class AndroidXRConfig
     {
-#if UNITY_6000_0_OR_NEWER
         private static AddAndRemoveRequest request;
 
         [MenuItem("Mixed Reality/MRTK3/Examples/Configure for Android XR...", priority = int.MaxValue)]
@@ -38,6 +35,5 @@ private static void Progress()
                 request = null;
             }
         }
-#endif
     }
 }

UnityProjects/MRTKDevTemplate/Assets/Scripts/Editor/AndroidXRConfig.cs

@@ -112,7 +112,7 @@ public class MoveObjectByEyeGaze : StatefulInteractable
         /// Limits the Z position of the GameObject to the specified minimum and maximum.
         /// </summary>
         public Vector2 LocalMinMaxZ = new Vector2(float.NegativeInfinity, float.PositiveInfinity);
-        
+
         [Tooltip("Fired when the GameObject is dropped.")]
         [SerializeField]
         private UnityEvent onDrop = null;
@@ -123,7 +123,7 @@ public class MoveObjectByEyeGaze : StatefulInteractable
 
         private bool
             onlyEyeWarpOnRelease =
-                true; // Only warp the currently grabbed target to the current look at location once the user releases the pinch gesture.        
+                true; // Only warp the currently grabbed target to the current look at location once the user releases the pinch gesture.
 
         private float originalTransparency = -1f;
         private bool originalUseGravity = false;
@@ -366,13 +366,13 @@ private bool IsLookingAwayFromTarget()
             // Check whether the user is still looking within the proximity of the target
             float distanceBetweenTargetAndCurrHitPos = Angle_ToCurrHitTarget(gameObject);
 
-            // **Note for potential improvement**: It would be better to make this dependent on the target's boundary 
+            // **Note for potential improvement**: It would be better to make this dependent on the target's boundary
             // instead of its center. The way it is implemented right now may cause problems for large-scale targets.
             return distanceBetweenTargetAndCurrHitPos > minLookAwayDistToEnableEyeWarp;
         }
 
         /// <summary>
-        /// Determine whether the user is looking away from the preview. 
+        /// Determine whether the user is looking away from the preview.
         /// </summary>
         private bool IsLookingAwayFromPreview()
         {
@@ -405,7 +405,7 @@ private bool IsLookingAwayFromPreview()
 
         /// <summary>
         /// Check if the destination is plausible. For example, this means if the target is placeable
-        /// on horizontal surfaces then only show a preview for (more or less) horizontal surfaces. 
+        /// on horizontal surfaces then only show a preview for (more or less) horizontal surfaces.
         /// </summary>
         /// <returns>True if the target can be placed on this surface.</returns>
         private bool IsDestinationPlausible()
@@ -490,13 +490,8 @@ private void DragAndDrop_Start()
                     originalUseGravity = rigidbody.useGravity;
                     rigidbody.useGravity = false;
 
-#if UNITY_6000_0_OR_NEWER
                     originalDrag = rigidbody.linearDamping;
                     rigidbody.linearDamping = float.PositiveInfinity;
-#else
-                    originalDrag = rigidbody.drag;
-                    rigidbody.drag = float.PositiveInfinity;
-#endif
                 }
             }
         }
@@ -525,11 +520,7 @@ private void DragAndDrop_Finish()
                 if (TryGetComponent<Rigidbody>(out var rigidbody))
                 {
                     rigidbody.useGravity = originalUseGravity;
-#if UNITY_6000_0_OR_NEWER
                     rigidbody.linearDamping = originalDrag;
-#else
-                    rigidbody.drag = originalDrag;
-#endif
                 }
 
                 onDrop.Invoke();

UnityProjects/MRTKDevTemplate/Assets/Scripts/EyeTracking/TargetPositioning/MoveObjectByEyeGaze.cs

@@ -10,7 +10,7 @@
 namespace MixedReality.Toolkit.Examples.Demos
 {
     /// <summary>
-    /// Helper script to re-spawn objects if they go too far from their original position. 
+    /// Helper script to re-spawn objects if they go too far from their original position.
     /// </summary>
     /// <remarks>
     /// The helper is useful for objects that will fall forever.
@@ -28,7 +28,7 @@ internal class TetheredPlacement : MonoBehaviour
 
         /// <summary>
         /// A Unity event function that is called on the frame when a script is enabled just before any of the update methods are called the first time.
-        /// </summary> 
+        /// </summary>
         private void Start()
         {
             rigidBody = GetComponent<Rigidbody>();
@@ -49,11 +49,7 @@ private void LateUpdate()
                 // Reset any velocity from falling or moving when re-spawning to original location
                 if (rigidBody != null)
                 {
-#if UNITY_6000_0_OR_NEWER
                     rigidBody.linearVelocity = Vector3.zero;
-#else
-                    rigidBody.velocity = Vector3.zero;
-#endif
                     rigidBody.angularVelocity = Vector3.zero;
                 }
 
@@ -63,4 +59,4 @@ private void LateUpdate()
         }
     }
 }
-#pragma warning restore CS1591
+#pragma warning restore CS1591