From db42149fb5e726d3addb46f26bdefd8cf65252cc Mon Sep 17 00:00:00 2001
From: AzaezelX <quillus@hotmail.com>
Date: Mon, 24 Feb 2025 17:10:23 -0600
Subject: [PATCH] Path class augs adds the following behaviours: onPostAdd,
 send an updatePath event so that paths created post-pathOnMissionLoadDone
 command can register with clients (like say when they are loaded from a
 submis) for editing tool purposes, allow Path::SetTransform to impact child
 objects so that pre-existing ones can be copy/pasted without the markers
 ending up in the same spot, or so that you can shift the entire path around
 and have those move in a relative manner

---
 Engine/source/scene/simPath.cpp | 43 +++++++++++++++++++++++++++++++++
 Engine/source/scene/simPath.h   |  2 ++
 2 files changed, 45 insertions(+)

diff --git a/Engine/source/scene/simPath.cpp b/Engine/source/scene/simPath.cpp
index b726caa8e..1e12a5adf 100644
--- a/Engine/source/scene/simPath.cpp
+++ b/Engine/source/scene/simPath.cpp
@@ -35,6 +35,7 @@
 #include "renderInstance/renderPassManager.h"
 #include "console/engineAPI.h"
 #include "T3D/pathShape.h"
+#include "T3D/physics/physicsShape.h"
 
 #include "T3D/Scene.h"
 
@@ -197,6 +198,12 @@ bool Path::onAdd()
    return true;
 }
 
+void Path::onPostAdd()
+{
+   Parent::onPostAdd();
+   if (isServerObject())
+      updatePath();
+}
 IMPLEMENT_CALLBACK(Path, onAdd, void, (SimObjectId ID), (ID),
 	"Called when this ScriptGroup is added to the system.\n"
 	"@param ID Unique object ID assigned when created (%this in script).\n"
@@ -252,6 +259,42 @@ void Path::updatePath()
    gServerPathManager->updatePath(mPathIndex, positions, rotations, times, smoothingTypes, mIsLooping);
 }
 
+void Path::setTransform(const MatrixF& mat)
+{
+   if (isServerObject())
+   {
+      MatrixF newXform = mat;
+      MatrixF oldXform = getTransform();
+      oldXform.affineInverse();
+
+      MatrixF offset;
+      offset.mul(newXform, oldXform);
+
+      // Update all child transforms
+      for (SimSetIterator itr(this); *itr; ++itr)
+      {
+         SceneObject* child = dynamic_cast<SceneObject*>(*itr);
+         if (child)
+         {
+            MatrixF childMat;
+
+            //add the "offset" caused by the parents change, and add it to it's own
+            // This is needed by objects that update their own render transform thru interpolate tick
+            // Mostly for stationary objects.
+            childMat.mul(offset, child->getTransform());
+            child->setTransform(childMat);
+
+            PhysicsShape* childPS = dynamic_cast<PhysicsShape*>(child);
+            if (childPS)
+               childPS->storeRestorePos();
+         }
+      }
+      updatePath();
+   }
+
+   Parent::setTransform(mat);
+}
+
 void Path::addObject(SimObject* obj)
 {
    Parent::addObject(obj);
diff --git a/Engine/source/scene/simPath.h b/Engine/source/scene/simPath.h
index 244cf7154..4c95f6771 100644
--- a/Engine/source/scene/simPath.h
+++ b/Engine/source/scene/simPath.h
@@ -76,12 +76,14 @@ class Path : public GameBase
    ~Path();
 
    void addObject(SimObject*) override;
+   void onPostAdd() override;
    void removeObject(SimObject*) override;
 
    void sortMarkers();
    void updatePath();
    bool isLooping() { return mIsLooping; }
    U32 getPathIndex() const;
+   void setTransform(const MatrixF& mat) override;
 
    DECLARE_CONOBJECT(Path);
    DECLARE_CATEGORY("Cinematic");