From 62e5bb48676d0457383cd8e7a4ced0fefb9a2a38 Mon Sep 17 00:00:00 2001
From: Leonardo Zide <leozide@users.noreply.github.com>
Date: Sun, 8 Mar 2026 15:48:09 -0700
Subject: [PATCH] Removed LoadCheckpoint.

---
 common/lc_model.cpp | 68 ++++-----------------------------------------
 common/lc_model.h   |  3 --
 2 files changed, 6 insertions(+), 65 deletions(-)

diff --git a/common/lc_model.cpp b/common/lc_model.cpp
index 2d4dcf6f..c99b6452 100644
--- a/common/lc_model.cpp
+++ b/common/lc_model.cpp
@@ -1935,9 +1935,11 @@ void lcModel::RunActionSequence(const std::vector<std::unique_ptr<lcModelAction>
 	
 	if (SelectionChanged)
 		gMainWindow->UpdateSelectedObjects(true);
-
-	UpdateAllViews();
+	
+	gMainWindow->UpdateCurrentStep();
 	gMainWindow->UpdateTimeline(true, false);
+	
+	UpdateAllViews();	
 }
 
 void lcModel::BeginActionSequence()
@@ -2051,64 +2053,6 @@ const lcModelHistoryEntry* lcModel::GetFirstUndoChange() const
 	return nullptr;
 }
 
-void lcModel::LoadCheckPoint(lcModelHistoryEntry* CheckPoint, bool Apply)
-{
-	if (!CheckPoint->ModelActions.empty())
-	{
-		RunActionSequence(CheckPoint->ModelActions, Apply);
-
-		return;
-	}
-
-	lcPiecesLibrary* Library = lcGetPiecesLibrary();
-	std::vector<PieceInfo*> LoadedInfos;
-
-	for (const std::unique_ptr<lcPiece>& Piece : mPieces)
-	{
-		PieceInfo* Info = Piece->mPieceInfo;
-		Library->LoadPieceInfo(Info, true, true);
-		LoadedInfos.push_back(Info);
-	}
-
-	// Remember the current step
-	const lcStep CurrentStep = mCurrentStep;
-
-	// Remember the camera names
-	std::vector<lcView*> Views = lcView::GetModelViews(this);
-	std::vector<QString> CameraNames(Views.size());
-
-	for (size_t ViewIndex = 0; ViewIndex < Views.size(); ViewIndex++)
-	{
-		lcCamera* Camera = Views[ViewIndex]->GetCamera();
-
-		if (!Camera->IsSimple())
-			CameraNames[ViewIndex] = Camera->GetName();
-	}
-
-	DeleteModel();
-
-	QBuffer Buffer(&CheckPoint->File);
-	Buffer.open(QIODevice::ReadOnly);
-	LoadLDraw(Buffer, lcGetActiveProject());
-
-	// Reset the current step
-	mCurrentStep = CurrentStep;
-	CalculateStep(CurrentStep);
-
-	// Reset the cameras
-	for (size_t ViewIndex = 0; ViewIndex < Views.size() && ViewIndex < CameraNames.size(); ViewIndex++)
-		if (!CameraNames[ViewIndex].isEmpty())
-			Views[ViewIndex]->SetCamera(CameraNames[ViewIndex]);
-
-	gMainWindow->UpdateTimeline(true, false);
-	gMainWindow->UpdateCurrentStep();
-	gMainWindow->UpdateSelectedObjects(true);
-	UpdateAllViews();
-
-	for (PieceInfo* Info : LoadedInfos)
-		Library->ReleasePieceInfo(Info);
-}
-
 void lcModel::SetActive(bool Active)
 {
 	CalculateStep(Active ? mCurrentStep : LC_STEP_MAX);
@@ -4827,7 +4771,7 @@ void lcModel::UndoAction()
 
 	std::unique_ptr<lcModelHistoryEntry> Undo = std::move(mUndoHistory.front());
 
-	LoadCheckPoint(Undo.get(), false);
+	RunActionSequence(Undo->ModelActions, false);
 
 	mUndoHistory.erase(mUndoHistory.begin());
 	mRedoHistory.insert(mRedoHistory.begin(), std::move(Undo));
@@ -4843,7 +4787,7 @@ void lcModel::RedoAction()
 
 	std::unique_ptr<lcModelHistoryEntry> Redo = std::move(mRedoHistory.front());
 
-	LoadCheckPoint(Redo.get(), true);
+	RunActionSequence(Redo->ModelActions, true);
 
 	mRedoHistory.erase(mRedoHistory.begin());
 	mUndoHistory.insert(mUndoHistory.begin(), std::move(Redo));
diff --git a/common/lc_model.h b/common/lc_model.h
index 9a9948ee..6de134d1 100644
--- a/common/lc_model.h
+++ b/common/lc_model.h
@@ -112,7 +112,6 @@ public:
 struct lcModelHistoryEntry
 {
 	std::vector<std::unique_ptr<lcModelAction>> ModelActions;
-	QByteArray File;
 	QString Description;
 };
 
@@ -413,8 +412,6 @@ protected:
 	void RemoveFirstUndoIfUnchanged();
 	const lcModelHistoryEntry* GetFirstUndoChange() const;
 
-	void LoadCheckPoint(lcModelHistoryEntry* CheckPoint, bool Apply);
-
 	QString GetGroupName(const QString& Prefix);
 	void RemoveEmptyGroups();
 	bool RemoveSelectedObjects();