Add NoteFieldPreview class

controllable by lua

src/Etterna/Actor/CMakeLists.txt

@@ -46,6 +46,7 @@ list(APPEND ACTOR_GAMEPLAY_SRC
 	"Gameplay/LyricDisplay.cpp"
 	"Gameplay/NoteDisplay.cpp"
 	"Gameplay/NoteField.cpp"
+	"Gameplay/NoteFieldPreview.cpp"
 	"Gameplay/Player.cpp"
 	"Gameplay/PlayerPractice.cpp"
 	"Gameplay/PlayerReplay.cpp"
@@ -63,6 +64,7 @@ list(APPEND ACTOR_GAMEPLAY_HPP
 	"Gameplay/LyricDisplay.h"
 	"Gameplay/NoteDisplay.h"
 	"Gameplay/NoteField.h"
+	"Gameplay/NoteFieldPreview.h"
 	"Gameplay/Player.h"
 	"Gameplay/PlayerPractice.h"
 	"Gameplay/PlayerReplay.h"

src/Etterna/Actor/Gameplay/NoteField.h

@@ -11,7 +11,7 @@
 
 class NoteData;
 /** @brief An Actor that renders NoteData. */
-class NoteField final : public ActorFrame
+class NoteField : public ActorFrame
 {
   public:
 	NoteField();

src/Etterna/Actor/Gameplay/NoteFieldPreview.cpp

@@ -0,0 +1,12 @@
+#include "Etterna/Globals/global.h"
+#include "Etterna/Models/Lua/LuaBinding.h"
+#include "Etterna/Actor/Base/ActorUtil.h"
+#include "NoteFieldPreview.h"
+
+REGISTER_ACTOR_CLASS(NoteFieldPreview);
+
+void
+NoteFieldPreview::LoadFromNode(const XNode* pNode)
+{
+	Actor::LoadFromNode(pNode);
+}

src/Etterna/Actor/Gameplay/NoteFieldPreview.h

@@ -0,0 +1,12 @@
+#ifndef NOTE_FIELDPREVIEW_H
+#define NOTE_FIELDPREVIEW_H
+
+#include "NoteField.h"
+
+class NoteFieldPreview : public NoteField
+{
+	void LoadFromNode(const XNode* pNode) override;
+	[[nodiscard]] auto Copy() const -> NoteFieldPreview* override;
+};
+
+#endif