[nostalgia/core/studio] Fix Add SubSheet to increment idIt before using it

src/nostalgia/modules/core/include/nostalgia/core/tilesheet.hpp

@@ -101,13 +101,13 @@ struct TileSheet {
 		 * Reads all pixels of this sheet or its children into the given pixel list
 		 * @param pixels
 		 */
-		void readPixelsTo(ox::Vector<uint8_t> *pPixels, int8_t pBpp) const noexcept;
+		void readPixelsTo(ox::Vector<uint8_t> &pPixels, int8_t pBpp) const noexcept;
 
 		/**
 		 * Reads all pixels of this sheet or its children into the given pixel list
 		 * @param pixels
 		 */
-		void readPixelsTo(ox::Vector<uint8_t> *pPixels) const noexcept;
+		void readPixelsTo(ox::Vector<uint8_t> &pPixels) const noexcept;
 
 		[[nodiscard]]
 		constexpr std::size_t size() const noexcept {
@@ -308,6 +308,7 @@ oxModelBegin(TileSheetV2)
 oxModelEnd()
 
 oxModelBegin(TileSheetV3::SubSheet)
+	oxModelField(id);
 	oxModelField(name);
 	oxModelField(rows);
 	oxModelField(columns);

src/nostalgia/modules/core/src/studio/tilesheeteditor/commands/addsubsheetcommand.cpp

@@ -28,12 +28,12 @@ void AddSubSheetCommand::redo() noexcept {
 	auto &parent = m_img.getSubSheet(m_parentIdx);
 	if (m_addedSheets.size() < 2) {
 		auto i = parent.subsheets.size();
-		parent.subsheets.emplace_back(m_img.idIt++, ox::sfmt("Subsheet {}", i), 1, 1, m_img.bpp);
+		parent.subsheets.emplace_back(++m_img.idIt, ox::sfmt("Subsheet {}", i), 1, 1, m_img.bpp);
 	} else {
-		parent.subsheets.emplace_back(m_img.idIt++, "Subsheet 0", parent.columns, parent.rows, std::move(parent.pixels));
+		parent.subsheets.emplace_back(++m_img.idIt, "Subsheet 0", parent.columns, parent.rows, std::move(parent.pixels));
 		parent.rows = 0;
 		parent.columns = 0;
-		parent.subsheets.emplace_back(m_img.idIt++, "Subsheet 1", 1, 1, m_img.bpp);
+		parent.subsheets.emplace_back(++m_img.idIt, "Subsheet 1", 1, 1, m_img.bpp);
 	}
 }