[nostalgia/core/studio/paletteeditor] Fix adding page if there is no existing page

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

@@ -233,7 +233,9 @@ struct TileSheetV4 {
 [[nodiscard]]
 constexpr bool valid(TileSheetV4::SubSheet const&ss, int bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
-	return ox::all_of(ss.subsheets.begin(), ss.subsheets.end(),
+	return
+		(ss.pixels.empty() || ss.subsheets.empty()) &&
+		ox::all_of(ss.subsheets.begin(), ss.subsheets.end(),
 				[bpp, bytes](TileSheetV4::SubSheet const&s) {
 			return bytes == s.pixels.size() && valid(s, bpp);
 		});
@@ -245,8 +247,14 @@ constexpr bool valid(TileSheetV4 const&ts) noexcept {
 }
 
 constexpr void repair(TileSheetV4::SubSheet &ss, int bpp) noexcept {
+	if (ss.subsheets.empty()) {
 		auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 		ss.pixels.resize(bytes);
+	} else {
+		ss.pixels.clear();
+		ss.columns = -1;
+		ss.rows = -1;
+	}
 	for (auto &s : ss.subsheets) {
 		repair(s, bpp);
 	}

src/nostalgia/modules/core/src/studio/paletteeditor/CMakeLists.txt

@@ -1,6 +1,7 @@
 target_sources(
 	NostalgiaCore-Studio PRIVATE
 		commands/addcolorcommand.cpp
+		commands/addpagecommand.cpp
 		commands/applycolorallpagescommand.cpp
 		commands/duplicatepagecommand.cpp
 		commands/movecolorcommand.cpp

src/nostalgia/modules/core/src/studio/paletteeditor/commands/addpagecommand.cpp

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#include "commands.hpp"
+
+#include "addpagecommand.hpp"
+
+namespace nostalgia::core {
+
+AddPageCommand::AddPageCommand(Palette &pal) noexcept:
+		m_pal(pal) {}
+
+int AddPageCommand::commandId() const noexcept {
+	return static_cast<int>(PaletteEditorCommandId::AddPage);
+}
+
+ox::Error AddPageCommand::redo() noexcept {
+	m_pal.pages.emplace_back(ox::sfmt("Page {}", m_pal.pages.size() + 1), ox::Vector<PaletteColor>{});
+	return {};
+}
+
+ox::Error AddPageCommand::undo() noexcept {
+	m_pal.pages.pop_back();
+	return {};
+}
+
+}

src/nostalgia/modules/core/src/studio/paletteeditor/commands/addpagecommand.hpp

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include <studio/studio.hpp>
+
+#include <nostalgia/core/palette.hpp>
+
+namespace nostalgia::core {
+
+class AddPageCommand: public studio::UndoCommand {
+	private:
+		Palette &m_pal;
+
+	public:
+		explicit AddPageCommand(Palette &pal) noexcept;
+
+		~AddPageCommand() noexcept override = default;
+
+		[[nodiscard]]
+		int commandId() const noexcept final;
+
+		ox::Error redo() noexcept final;
+
+		ox::Error undo() noexcept final;
+
+};
+
+}

src/nostalgia/modules/core/src/studio/paletteeditor/commands/commands.hpp

@@ -9,6 +9,7 @@ namespace nostalgia::core {
 enum class PaletteEditorCommandId {
 	ApplyColorAllPages,
 	RenamePage,
+	AddPage,
 	DuplicatePage,
 	RemovePage,
 	AddColor,

src/nostalgia/modules/core/src/studio/paletteeditor/commands/duplicatepagecommand.cpp

@@ -23,7 +23,7 @@ int DuplicatePageCommand::commandId() const noexcept {
 }
 
 ox::Error DuplicatePageCommand::redo() noexcept {
-	m_pal.pages.emplace(m_dstIdx, "", std::move(m_page));
+	m_pal.pages.emplace(m_dstIdx, ox::sfmt("Page {}", m_pal.pages.size() + 1), std::move(m_page));
 	return {};
 }
 

src/nostalgia/modules/core/src/studio/paletteeditor/paletteeditor-imgui.cpp

@@ -7,6 +7,7 @@
 #include <keel/media.hpp>
 
 #include "commands/addcolorcommand.hpp"
+#include "commands/addpagecommand.hpp"
 #include "commands/applycolorallpagescommand.hpp"
 #include "commands/duplicatepagecommand.hpp"
 #include "commands/movecolorcommand.hpp"
@@ -196,7 +197,11 @@ void PaletteEditorImGui::drawPagesEditor() noexcept {
 	constexpr auto toolbarHeight = 40;
 	auto const btnSz = ImVec2{paneSz.x / 4 - 5.5f, 24};
 	if (ImGui::Button("Add", btnSz)) {
+		if (m_pal.pages.empty()) {
+			std::ignore = pushCommand<AddPageCommand>(m_pal);
+		} else {
 			std::ignore = pushCommand<DuplicatePageCommand>(m_pal, 0u, m_pal.pages.size());
+		}
 		m_page = m_pal.pages.size() - 1;
 	}
 	ImGui::SameLine();

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

@@ -9,27 +9,24 @@ namespace nostalgia::core {
 core::UpdateSubSheetCommand::UpdateSubSheetCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx idx,
-		ox::String name,
-		int cols,
-		int rows) noexcept:
-		m_img(img),
-		m_idx(std::move(idx)),
-		m_sheet(getSubSheet(m_img, m_idx)),
-		m_newName(std::move(name)),
-		m_newCols(cols),
-		m_newRows(rows) {
+		ox::StringParam name,
+		int const cols,
+		int const rows):
+		m_img{img},
+		m_idx{std::move(idx)},
+		m_sheet{getSubSheet(m_img, m_idx)} {
+	m_sheet = getSubSheet(m_img, m_idx);
+	m_sheet.name = std::move(name);
+	OX_THROW_ERROR(resizeSubsheet(m_sheet, m_img.bpp, {cols, rows}));
 }
 
 ox::Error UpdateSubSheetCommand::redo() noexcept {
-	auto &sheet = getSubSheet(m_img, m_idx);
-	sheet.name = m_newName;
-	oxLogError(resizeSubsheet(sheet, m_img.bpp, {m_newCols, m_newRows}));
+	std::swap(m_sheet, getSubSheet(m_img, m_idx));
 	return {};
 }
 
 ox::Error UpdateSubSheetCommand::undo() noexcept {
-	auto &sheet = getSubSheet(m_img, m_idx);
-	sheet = m_sheet;
+	std::swap(m_sheet, getSubSheet(m_img, m_idx));
 	return {};
 }
 

src/nostalgia/modules/core/src/studio/tilesheeteditor/commands/updatesubsheetcommand.hpp

@@ -13,17 +13,14 @@ class UpdateSubSheetCommand: public TileSheetCommand {
 		TileSheet &m_img;
 		TileSheet::SubSheetIdx m_idx;
 		TileSheet::SubSheet m_sheet;
-		ox::String m_newName;
-		int m_newCols = 0;
-		int m_newRows = 0;
 
 	public:
 		UpdateSubSheetCommand(
 				TileSheet &img,
 				TileSheet::SubSheetIdx idx,
-				ox::String name,
+				ox::StringParam name,
 				int cols,
-				int rows) noexcept;
+				int rows);
 
 		ox::Error redo() noexcept final;
 

src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp

@@ -234,7 +234,7 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 		ImGui::BeginChild("SubSheets", {s_palViewWidth - 24, ySize / 2.f}, true);
 		{
 			static constexpr auto btnHeight = ig::BtnSz.y;
-			auto const btnSize = ImVec2{btnHeight, btnHeight};
+			auto constexpr btnSize = ImVec2{btnHeight, btnHeight};
 			if (ig::PushButton("+", btnSize)) {
 				auto insertOnIdx = m_model.activeSubSheetIdx();
 				auto const&parent = m_model.activeSubSheet();
@@ -258,7 +258,10 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 				m_exportMenu.show();
 			}
 			TileSheet::SubSheetIdx path;
-			static constexpr auto flags = ImGuiTableFlags_RowBg | ImGuiTableFlags_NoBordersInBody;
+			static constexpr auto flags =
+				ImGuiTableFlags_RowBg |
+                ImGuiTableFlags_NoBordersInBody |
+                ImGuiTableFlags_ScrollY;
             if (ImGui::BeginTable("Subsheets", 4, flags)) {
                 ImGui::TableSetupColumn("Subsheet", ImGuiTableColumnFlags_NoHide);
                 ImGui::TableSetupColumn("ID", ImGuiTableColumnFlags_WidthFixed, 25);
@@ -462,8 +465,12 @@ void TileSheetEditorImGui::drawPaletteMenu() noexcept {
 		}
 	}
 	// header
+	auto constexpr palTblFlags =
+		ImGuiTableFlags_RowBg |
+        ImGuiTableFlags_SizingStretchProp |
+        ImGuiTableFlags_ScrollY;
 	if (ImGui::BeginTable(
-			"PaletteTable", 4, ImGuiTableFlags_RowBg | ImGuiTableFlags_SizingStretchProp)) {
+			"PaletteTable", 4, palTblFlags)) {
 		ImGui::TableSetupColumn("Idx", 0, 0.6f);
 		ImGui::TableSetupColumn("", 0, 0.22f);
 		ImGui::TableSetupColumn("Name", 0, 3);
@@ -544,7 +551,7 @@ void TileSheetEditorImGui::SubSheetEditor::draw(turbine::Context &tctx) noexcept
 	auto const popupHeight = modSize ? 130.f : 85.f;
 	auto const popupSz = ImVec2{popupWidth, popupHeight};
 	if (ig::BeginPopup(tctx, popupName, m_show, popupSz)) {
-		ImGui::InputText("Name", m_name.data(), m_name.cap());
+		ig::InputText("Name", m_name);
 		if (modSize) {
 			ImGui::InputInt("Columns", &m_cols);
 			ImGui::InputInt("Rows", &m_rows);

src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.cpp

@@ -26,11 +26,6 @@
 
 namespace nostalgia::core {
 
-Palette const TileSheetEditorModel::s_defaultPalette = {
-	.colorNames = {ox::Vector<ox::String>{{}}},
-	.pages = {{"Page 1", ox::Vector<Color16>(128)}},
-};
-
 // delete pixels of all non-leaf nodes
 static void normalizeSubsheets(TileSheet::SubSheet &ss) noexcept {
 	if (ss.subsheets.empty()) {
@@ -42,7 +37,14 @@ static void normalizeSubsheets(TileSheet::SubSheet &ss) noexcept {
 	}
 }
 
-TileSheetEditorModel::TileSheetEditorModel(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack):
+
+Palette const TileSheetEditorModel::s_defaultPalette = {
+	.colorNames = {ox::Vector<ox::String>{{}}},
+	.pages = {{"Page 1", ox::Vector<Color16>(128)}},
+};
+
+TileSheetEditorModel::TileSheetEditorModel(
+		studio::StudioContext &sctx, ox::StringViewCR path, studio::UndoStack &undoStack):
 	m_sctx(sctx),
 	m_tctx(m_sctx.tctx),
 	m_path(path),
@@ -62,7 +64,7 @@ void TileSheetEditorModel::cut() {
 	TileSheetClipboard blankCb;
 	auto cb = ox::make_unique<TileSheetClipboard>();
 	auto const&s = activeSubSheet();
-	iterateSelectionRows(*m_selection, [&](int x, int y) {
+	iterateSelectionRows(*m_selection, [&](int const x, int const y) {
 		auto pt = ox::Point{x, y};
 		auto const idx = core::idx(s, pt);
 		auto const c = getPixel(s, m_img.bpp, idx);
@@ -73,7 +75,8 @@ void TileSheetEditorModel::cut() {
 	auto const pt1 = m_selection->a;
 	auto const pt2 = ox::Point{s.columns * TileWidth, s.rows * TileHeight};
 	turbine::setClipboardObject(m_tctx, std::move(cb));
-	pushCommand(ox::make<CutPasteCommand>(CommandId::Cut, m_img, m_activeSubsSheetIdx, pt1, pt2, blankCb));
+	pushCommand(ox::make<CutPasteCommand>(
+		CommandId::Cut, m_img, m_activeSubsSheetIdx, pt1, pt2, blankCb));
 }
 
 void TileSheetEditorModel::copy() {
@@ -81,7 +84,7 @@ void TileSheetEditorModel::copy() {
 		return;
 	}
 	auto cb = ox::make_unique<TileSheetClipboard>();
-	iterateSelectionRows(*m_selection, [&](int x, int y) {
+	iterateSelectionRows(*m_selection, [&](int const x, int const y) {
 		auto pt = ox::Point{x, y};
 		const auto&s = activeSubSheet();
 		const auto idx = core::idx(s, pt);
@@ -105,7 +108,8 @@ void TileSheetEditorModel::paste() {
 	auto const&s = activeSubSheet();
 	auto const pt1 = m_selection->a;
 	auto const pt2 = ox::Point{s.columns * TileWidth, s.rows * TileHeight};
-	pushCommand(ox::make<CutPasteCommand>(CommandId::Paste, m_img, m_activeSubsSheetIdx, pt1, pt2, *cb));
+	pushCommand(ox::make<CutPasteCommand>(
+		CommandId::Paste, m_img, m_activeSubsSheetIdx, pt1, pt2, *cb));
 }
 
 bool TileSheetEditorModel::acceptsClipboardPayload() const noexcept {
@@ -120,8 +124,8 @@ ox::StringView TileSheetEditorModel::palPath() const noexcept {
 	}
 	constexpr ox::StringView uuidPrefix = "uuid://";
 	if (ox::beginsWith(path, uuidPrefix)) {
-		auto uuid = ox::StringView(&path[uuidPrefix.bytes()], path.bytes() - uuidPrefix.bytes());
-		auto out = keelCtx(m_tctx).uuidToPath.at(uuid);
+		auto const uuid = ox::StringView(&path[uuidPrefix.bytes()], path.bytes() - uuidPrefix.bytes());
+		auto const out = keelCtx(m_tctx).uuidToPath.at(uuid);
 		if (out.error) {
 			return {};
 		}
@@ -131,13 +135,14 @@ ox::StringView TileSheetEditorModel::palPath() const noexcept {
 	}
 }
 
-ox::Error TileSheetEditorModel::setPalette(ox::StringView path) noexcept {
+ox::Error TileSheetEditorModel::setPalette(ox::StringViewCR path) noexcept {
 	OX_REQUIRE(uuid, keelCtx(m_tctx).pathToUuid.at(path));
-	pushCommand(ox::make<PaletteChangeCommand>(activeSubSheetIdx(), m_img, uuid->toString()));
+	pushCommand(ox::make<PaletteChangeCommand>(
+		activeSubSheetIdx(), m_img, uuid->toString()));
 	return {};
 }
 
-void TileSheetEditorModel::setPalettePage(size_t pg) noexcept {
+void TileSheetEditorModel::setPalettePage(size_t const pg) noexcept {
 	m_palettePage = ox::clamp<size_t>(pg, 0, m_pal->pages.size() - 1);
 	m_updated = true;
 }
@@ -146,7 +151,7 @@ size_t TileSheetEditorModel::palettePage() const noexcept {
 	return m_palettePage;
 }
 
-void TileSheetEditorModel::drawCommand(ox::Point const&pt, std::size_t palIdx) noexcept {
+void TileSheetEditorModel::drawCommand(ox::Point const&pt, std::size_t const palIdx) noexcept {
 	const auto &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
 	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
 		return;
@@ -155,7 +160,8 @@ void TileSheetEditorModel::drawCommand(ox::Point const&pt, std::size_t palIdx) n
 	if (m_ongoingDrawCommand) {
 		m_updated = m_updated || m_ongoingDrawCommand->append(idx);
 	} else if (getPixel(activeSubSheet, m_img.bpp, idx) != palIdx) {
-		pushCommand(ox::make<DrawCommand>(m_img, m_activeSubsSheetIdx, idx, static_cast<int>(palIdx)));
+		pushCommand(ox::make<DrawCommand>(
+			m_img, m_activeSubsSheetIdx, idx, static_cast<int>(palIdx)));
 	}
 }
 
@@ -171,16 +177,20 @@ void TileSheetEditorModel::rmSubsheet(TileSheet::SubSheetIdx const&idx) noexcept
 	pushCommand(ox::make<RmSubSheetCommand>(m_img, idx));
 }
 
-void TileSheetEditorModel::insertTiles(TileSheet::SubSheetIdx const&idx, std::size_t tileIdx, std::size_t tileCnt) noexcept {
+void TileSheetEditorModel::insertTiles(
+	TileSheet::SubSheetIdx const&idx, std::size_t const tileIdx, std::size_t const tileCnt) noexcept {
 	pushCommand(ox::make<InsertTilesCommand>(m_img, idx, tileIdx, tileCnt));
 }
 
-void TileSheetEditorModel::deleteTiles(TileSheet::SubSheetIdx const&idx, std::size_t tileIdx, std::size_t tileCnt) noexcept {
+void TileSheetEditorModel::deleteTiles(
+	TileSheet::SubSheetIdx const&idx, std::size_t const tileIdx, std::size_t const tileCnt) noexcept {
 	pushCommand(ox::make<DeleteTilesCommand>(m_img, idx, tileIdx, tileCnt));
 }
 
-ox::Error TileSheetEditorModel::updateSubsheet(TileSheet::SubSheetIdx const&idx, ox::StringView const&name, int cols, int rows) noexcept {
-	pushCommand(ox::make<UpdateSubSheetCommand>(m_img, idx, ox::String(name), cols, rows));
+ox::Error TileSheetEditorModel::updateSubsheet(
+	TileSheet::SubSheetIdx const&idx, ox::StringViewCR name, int const cols, int const rows) noexcept {
+	OX_REQUIRE(cmd, ox::makeCatch<UpdateSubSheetCommand>(m_img, idx, name, cols, rows));
+	pushCommand(cmd);
 	return {};
 }
 
@@ -189,7 +199,7 @@ void TileSheetEditorModel::setActiveSubsheet(TileSheet::SubSheetIdx const&idx) n
 	this->activeSubsheetChanged.emit(m_activeSubsSheetIdx);
 }
 
-void TileSheetEditorModel::fill(ox::Point const&pt, int palIdx) noexcept {
+void TileSheetEditorModel::fill(ox::Point const&pt, int const palIdx) noexcept {
 	auto const&activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
 	// build idx list
 	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
@@ -197,10 +207,10 @@ void TileSheetEditorModel::fill(ox::Point const&pt, int palIdx) noexcept {
 	}
 	ox::Array<bool, PixelsPerTile> updateMap = {};
 	auto const oldColor = getPixel(activeSubSheet, m_img.bpp, pt);
-	getFillPixels(updateMap, pt, oldColor);
+	getFillPixels(activeSubSheet, updateMap, pt, oldColor);
 	ox::Vector<std::size_t> idxList;
 	auto i = core::idx(activeSubSheet, pt) / PixelsPerTile * PixelsPerTile;
-	for (auto u : updateMap) {
+	for (auto const u : updateMap) {
 		if (u) {
 			idxList.emplace_back(i);
 		}
@@ -230,7 +240,7 @@ void TileSheetEditorModel::completeSelection() noexcept {
 		m_selTracker.finishSelection();
 		m_selection.emplace(m_selTracker.selection());
 		auto&pt = m_selection->b;
-		auto&s = activeSubSheet();
+		auto const&s = activeSubSheet();
 		pt.x = ox::min(s.columns * TileWidth - 1, pt.x);
 		pt.y = ox::min(s.rows * TileHeight - 1, pt.y);
 	}
@@ -275,47 +285,44 @@ ox::Error TileSheetEditorModel::saveFile() noexcept {
 	return m_sctx.project->writeObj(m_path, m_img, ox::ClawFormat::Metal);
 }
 
-bool TileSheetEditorModel::pixelSelected(std::size_t idx) const noexcept {
+bool TileSheetEditorModel::pixelSelected(std::size_t const idx) const noexcept {
 	auto const&s = activeSubSheet();
 	auto const pt = idxToPt(static_cast<int>(idx), s.columns);
 	return m_selection && m_selection->contains(pt);
 }
 
-void TileSheetEditorModel::getFillPixels(ox::Span<bool> pixels, ox::Point const&pt, int oldColor) const noexcept {
-	const auto &activeSubSheet = this->activeSubSheet();
-	const auto tileIdx = [activeSubSheet](const ox::Point &pt) noexcept {
-		return ptToIdx(pt, activeSubSheet.columns) / PixelsPerTile;
-	};
-	// get points
-	const auto leftPt = pt + ox::Point(-1, 0);
-	const auto rightPt = pt + ox::Point(1, 0);
-	const auto topPt = pt + ox::Point(0, -1);
-	const auto bottomPt = pt + ox::Point(0, 1);
-	// calculate indices
-	const auto idx = ptToIdx(pt, activeSubSheet.columns);
-	const auto leftIdx = ptToIdx(leftPt, activeSubSheet.columns);
-	const auto rightIdx = ptToIdx(rightPt, activeSubSheet.columns);
-	const auto topIdx = ptToIdx(topPt, activeSubSheet.columns);
-	const auto bottomIdx = ptToIdx(bottomPt, activeSubSheet.columns);
-	const auto tile = tileIdx(pt);
+void TileSheetEditorModel::getFillPixels(
+		TileSheet::SubSheet const&activeSubSheet,
+		ox::Span<bool> pixels,
+		ox::Point const&pt,
+		int const oldColor) const noexcept {
+	auto const idx = ptToIdx(pt, activeSubSheet.columns);
+	auto const relIdx = idx % PixelsPerTile;
+	if (pixels[relIdx] || getPixel(activeSubSheet, m_img.bpp, idx) != oldColor) {
+		return;
+	}
 	// mark pixels to update
-	pixels[idx % PixelsPerTile] = true;
-	if (!pixels[leftIdx % PixelsPerTile] && tile == tileIdx(leftPt) && getPixel(activeSubSheet, m_img.bpp, leftIdx) == oldColor) {
-		getFillPixels(pixels, leftPt, oldColor);
+	pixels[relIdx] = true;
+	if (pt.x % TileWidth != 0) {
+		auto const leftPt = pt + ox::Point{-1, 0};
+		getFillPixels(activeSubSheet, pixels, leftPt, oldColor);
 	}
-	if (!pixels[rightIdx % PixelsPerTile] && tile == tileIdx(rightPt) && getPixel(activeSubSheet, m_img.bpp, rightIdx) == oldColor) {
-		getFillPixels(pixels, rightPt, oldColor);
+	if (pt.x % TileWidth != TileWidth - 1) {
+		auto const rightPt = pt + ox::Point{1, 0};
+		getFillPixels(activeSubSheet, pixels, rightPt, oldColor);
 	}
-	if (!pixels[topIdx % PixelsPerTile] && tile == tileIdx(topPt) && getPixel(activeSubSheet, m_img.bpp, topIdx) == oldColor) {
-		getFillPixels(pixels, topPt, oldColor);
+	if (pt.y % TileHeight != 0) {
+		auto const topPt = pt + ox::Point{0, -1};
+		getFillPixels(activeSubSheet, pixels, topPt, oldColor);
 	}
-	if (!pixels[bottomIdx % PixelsPerTile] && tile == tileIdx(bottomPt) && getPixel(activeSubSheet, m_img.bpp, bottomIdx) == oldColor) {
-		getFillPixels(pixels, bottomPt, oldColor);
+	if (pt.y % TileHeight != TileHeight - 1) {
+		auto const bottomPt = pt + ox::Point{0, 1};
+		getFillPixels(activeSubSheet, pixels, bottomPt, oldColor);
 	}
 }
 
 void TileSheetEditorModel::pushCommand(studio::UndoCommand *cmd) noexcept {
-	std::ignore = m_undoStack.push(ox::UPtr<studio::UndoCommand>(cmd));
+	std::ignore = m_undoStack.push(ox::UPtr<studio::UndoCommand>{cmd});
 	m_ongoingDrawCommand = dynamic_cast<DrawCommand*>(cmd);
 	m_updated = true;
 }

src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.hpp

@@ -4,9 +4,7 @@
 
 #pragma once
 
-#include <ox/std/bounds.hpp>
 #include <ox/std/point.hpp>
-#include <ox/std/trace.hpp>
 #include <ox/std/string.hpp>
 
 #include <studio/studio.hpp>
@@ -38,7 +36,7 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		bool m_updated = false;
 
 	public:
-		TileSheetEditorModel(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack);
+		TileSheetEditorModel(studio::StudioContext &sctx, ox::StringViewCR path, studio::UndoStack &undoStack);
 
 		~TileSheetEditorModel() override = default;
 
@@ -63,7 +61,7 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		[[nodiscard]]
 		ox::StringView palPath() const noexcept;
 
-		ox::Error setPalette(ox::StringView path) noexcept;
+		ox::Error setPalette(ox::StringViewCR path) noexcept;
 
 		void setPalettePage(size_t pg) noexcept;
 
@@ -128,7 +126,11 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		bool pixelSelected(std::size_t idx) const noexcept;
 
 	private:
-		void getFillPixels(ox::Span<bool> pixels, ox::Point const&pt, int oldColor) const noexcept;
+		void getFillPixels(
+			TileSheet::SubSheet const&activeSubSheet,
+			ox::Span<bool> pixels,
+			ox::Point const&pt,
+			int oldColor) const noexcept;
 
 		void pushCommand(studio::UndoCommand *cmd) noexcept;
 

src/nostalgia/studio/CMakeLists.txt

@@ -11,7 +11,7 @@ target_link_libraries(
 
 target_compile_definitions(
 	NostalgiaStudio PUBLIC
-		OLYMPIC_APP_VERSION="d2024.12.1"
+		OLYMPIC_APP_VERSION="d2024.12.3"
 )
 
 install(

src/olympic/studio/applib/src/newproject.cpp

@@ -50,7 +50,7 @@ void NewProject::draw(studio::StudioContext &ctx) noexcept {
 
 void NewProject::drawNewProjectName(studio::StudioContext &sctx) noexcept {
 	drawWindow(sctx.tctx, &m_open, [this, &sctx] {
-		ImGui::InputText("Name", m_projectName.data(), m_projectName.cap());
+		ig::InputText("Name", m_projectName);
 		ImGui::Text("Path: %s", m_projectPath.c_str());
 		if (ImGui::Button("Browse")) {
 			oxLogError(studio::chooseDirectory().moveTo(m_projectPath));