[buildcore] Make pybb cmake_build specify --config debug/release

.gitea/workflows/build.yaml

@@ -4,7 +4,7 @@ on: [push]
 
 jobs:
   build:
-    runs-on: nostalgia
+    runs-on: olympic
     steps:
       - name: Check out repository code
         uses: actions/checkout@v3
@@ -17,3 +17,10 @@ jobs:
       - run: make purge configure-release
       - run: make build
       - run: make test
+      - run: make install
+      - run: mv dist/linux-x86_64-release nostalgia-linux-x86_64
+      - run: tar cf nostalgia-linux-x86_64.tar nostalgia-linux-x86_64
+      - uses: actions/upload-artifact@v3
+        with:
+          name: nostalgia-linux-x86_64
+          path: nostalgia-linux-x86_64.tar

Makefile

@@ -15,7 +15,16 @@ PROJECT_PLAYER=./build/${BC_VAR_CURRENT_BUILD}/bin/${BC_VAR_PROJECT_NAME_CAP}
 
 .PHONY: pkg-gba
 pkg-gba: build
-	${BC_CMD_ENVRUN} ${BC_PY3} ./util/scripts/pkg-gba.py sample_project ${BC_VAR_PROJECT_NAME}
+	${BC_CMD_ENVRUN} ${BC_PY3} ./util/scripts/pkg-gba.py sample_project ${BC_VAR_PROJECT_NAME_CAP}
+
+.PHONY: pkg-mac
+pkg-mac: install
+	${BC_CMD_ENVRUN} ${BC_PY3} ./util/scripts/pkg-dmg.py
+
+.PHONY: generate-studio-rsrc
+generate-studio-rsrc:
+	${BC_CMD_ENVRUN} ${BC_PY3} ./util/scripts/file-to-cpp.py --rsrc src/olympic/studio/applib/src/rsrc.json
+	${BC_CMD_ENVRUN} ${BC_PY3} ./util/scripts/file-to-cpp.py --rsrc src/nostalgia/studio/rsrc.json
 
 .PHONY: build-player
 build-player:
@@ -28,10 +37,10 @@ run-studio: build
 	${PROJECT_STUDIO}
 .PHONY: gba-run
 gba-run: pkg-gba
-	${MGBA} ${BC_VAR_PROJECT_NAME}.gba
+	${MGBA} ${BC_VAR_PROJECT_NAME_CAP}.gba
 .PHONY: debug
 debug: build
-	${BC_CMD_HOST_DEBUGGER} ./build/${BC_VAR_CURRENT_BUILD}/bin/${BC_VAR_PROJECT_NAME} sample_project
+	${BC_CMD_HOST_DEBUGGER} ${PROJECT_PLAYER} sample_project
 .PHONY: debug-studio
 debug-studio: build
 	${BC_CMD_HOST_DEBUGGER} ${PROJECT_STUDIO}

deps/buildcore/base.mk

@@ -93,7 +93,7 @@ purge:
 	${BC_CMD_RM_RF} compile_commands.json
 .PHONY: test
 test: build
-	${BC_CMD_ENVRUN} mypy ${BC_VAR_SCRIPTS}
+	${BC_CMD_ENVRUN} ${BC_CMD_PY3} -m mypy ${BC_VAR_SCRIPTS}
 	${BC_CMD_CMAKE_BUILD} ${BC_VAR_BUILD_PATH} test
 .PHONY: test-verbose
 test-verbose: build

deps/buildcore/scripts/pybb.py

@@ -11,6 +11,7 @@
 # "Python Busy Box" - adds cross-platform equivalents to Unix commands that
 #                     don't translate well to that other operating system
 
+import multiprocessing
 import os
 import platform
 import shutil
@@ -57,7 +58,11 @@ def cmake_build(base_path: str, target: Optional[str]) -> int:
         path = os.path.join(base_path, d)
         if not os.path.isdir(path):
             continue
-        args = ['cmake', '--build', path]
+        args = ['cmake', '--build', path, f'-j{multiprocessing.cpu_count()}']
+        if path.endswith('release'):
+            args.append('--config=release')
+        elif path.endswith('debug'):
+            args.append('--config=debug')
         if target is not None:
             args.extend(['--target', target])
         err = subprocess.run(args).returncode

deps/buildcore/scripts/util.py

@@ -35,4 +35,6 @@ def get_arch() -> str:
     arch = platform.machine().lower()
     if arch == 'amd64':
         arch = 'x86_64'
+    elif arch == 'aarch64':
+        arch = 'arm64'
     return arch

deps/nfde/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.19)
 project(nativefiledialog-extended VERSION 1.1.1)
 
 set(nfd_ROOT_PROJECT OFF)

deps/ox/deps/jsoncpp/CMakeLists.txt

@@ -12,7 +12,7 @@
 # CMake versions greater than the JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION policies will
 # continue to generate policy warnings "CMake Warning (dev)...Policy CMP0XXX is not set:"
 #
-set(JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION "3.8.0")
+set(JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION "3.13.2")
 set(JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION "3.13.2")
 cmake_minimum_required(VERSION ${JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION})
 if("${CMAKE_VERSION}" VERSION_LESS "${JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION}")

deps/ox/src/ox/clargs/clargs.cpp

@@ -29,7 +29,7 @@ ClArgs::ClArgs(ox::SpanView<const char*> args) noexcept {
 						m_bools[arg] = false;
 					}
 					m_strings[arg] = val;
-					if (auto r = ox::atoi(val.c_str()); r.error == 0) {
+					if (auto r = ox::strToInt(val); r.error == 0) {
 						m_ints[arg] = r.value;
 					}
 					++i;

deps/ox/src/ox/claw/read.cpp

@@ -81,7 +81,7 @@ Result<ClawHeader> readClawHeader(ox::BufferView buff) noexcept {
 		return ox::Error(4, "Claw format does not match any supported format/version combo");
 	}
 	hdr.typeName = typeName;
-	std::ignore = ox::atoi(versionStr).copyTo(hdr.typeVersion);
+	std::ignore = ox::strToInt(versionStr).copyTo(hdr.typeVersion);
 	hdr.data = buffRaw;
 	hdr.dataSize = buffLen;
 	return hdr;

deps/ox/src/ox/fs/filestore/filestoretemplate.hpp

@@ -433,14 +433,14 @@ Error FileStoreTemplate<size_t>::resize() {
 template<typename size_t>
 Error FileStoreTemplate<size_t>::resize(std::size_t size, void *newBuff) {
 	if (m_buffer->size() > size) {
-		return ox::Error(1);
+		return ox::Error{1, "new buffer is too small for existing data"};
 	}
 	m_buffSize = static_cast<size_t>(size);
 	if (newBuff) {
-		m_buffer = reinterpret_cast<Buffer*>(newBuff);
+		m_buffer = static_cast<Buffer*>(newBuff);
 		OX_RETURN_ERROR(m_buffer->setSize(static_cast<size_t>(size)));
 	}
-	return ox::Error(0);
+	return {};
 }
 
 template<typename size_t>

deps/ox/src/ox/fs/filesystem/filelocation.cpp

@@ -31,10 +31,10 @@ FileAddress::FileAddress(uint64_t inode) noexcept {
 FileAddress::FileAddress(ox::StringViewCR path) noexcept {
 	auto pathSize = path.bytes();
 	m_data.path = new char[pathSize + 1];
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	memcpy(m_data.path, path.data(), pathSize);
-OX_CLANG_NOWARN_BEGIN(-Wunsafe-buffer-usage)
 	m_data.path[pathSize] = 0;
-OX_CLANG_NOWARN_END
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	m_type = FileAddressType::Path;
 }
 
@@ -48,9 +48,11 @@ FileAddress &FileAddress::operator=(const FileAddress &other) noexcept {
 		case FileAddressType::Path:
 		{
 			if (other.m_data.path) {
+				OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 				auto strSize = ox::strlen(other.m_data.path) + 1;
 				m_data.path = new char[strSize];
 				ox::memcpy(m_data.path, other.m_data.path, strSize);
+				OX_ALLOW_UNSAFE_BUFFERS_END
 			} else {
 				m_data.constPath = "";
 				m_type = FileAddressType::ConstPath;

deps/ox/src/ox/fs/filesystem/filelocation.hpp

@@ -24,9 +24,6 @@ enum class FileAddressType: int8_t {
 	Inode,
 };
 
-template<typename T>
-constexpr Error model(T *h, CommonPtrWith<class FileAddress> auto *fa) noexcept;
-
 class FileAddress {
 
 	template<typename T>

deps/ox/src/ox/fs/filesystem/filesystem.cpp

@@ -37,6 +37,30 @@ Error FileSystem::read(const FileAddress &addr, void *buffer, std::size_t size)
 	}
 }
 
+Result<Buffer> FileSystem::read(FileAddress const &addr, size_t const size) noexcept {
+	Result<Buffer> out;
+	out.value.resize(size);
+	switch (addr.type()) {
+		case FileAddressType::Inode:
+			OX_RETURN_ERROR(readFileInode(addr.getInode().value, out.value.data(), size));
+			break;
+		case FileAddressType::ConstPath:
+		case FileAddressType::Path:
+			OX_RETURN_ERROR(readFilePath(StringView{addr.getPath().value}, out.value.data(), size));
+			break;
+		default:
+			return ox::Error{1};
+	}
+	return out;
+}
+
+Result<Buffer> FileSystem::read(StringViewCR path, size_t const size) noexcept {
+	Result<Buffer> out;
+	out.value.resize(size);
+	OX_RETURN_ERROR(readFilePath(path, out.value.data(), size));
+	return out;
+}
+
 Result<Buffer> FileSystem::read(const FileAddress &addr) noexcept {
 	OX_REQUIRE(s, stat(addr));
 	Buffer buff(static_cast<std::size_t>(s.size));
@@ -51,18 +75,33 @@ Result<Buffer> FileSystem::read(StringViewCR path) noexcept {
 	return buff;
 }
 
-Error FileSystem::read(const FileAddress &addr, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept {
+Error FileSystem::read(
+		FileAddress const &addr,
+		std::size_t const readStart,
+		std::size_t const readSize,
+		void *buffer,
+		std::size_t *size) noexcept {
 	switch (addr.type()) {
 		case FileAddressType::Inode:
-			return read(addr.getInode().value, readStart, readSize, buffer, size);
+			return readFileInodeRange(addr.getInode().value, readStart, readSize, buffer, size);
 		case FileAddressType::ConstPath:
 		case FileAddressType::Path:
-			return ox::Error(2, "Unsupported for path lookups");
+			return readFilePathRange(addr.getPath().value, readStart, readSize, buffer, size);
 		default:
 			return ox::Error(1);
 	}
 }
 
+Result<size_t> FileSystem::read(
+		StringViewCR path,
+		std::size_t const readStart,
+		std::size_t const readSize,
+		Span<char> buff) noexcept {
+	size_t szOut{buff.size()};
+	OX_RETURN_ERROR(readFilePathRange(path, readStart, readSize, buff.data(), &szOut));
+	return szOut;
+}
+
 Error FileSystem::write(const FileAddress &addr, const void *buffer, uint64_t size, FileType fileType) noexcept {
 	switch (addr.type()) {
 		case FileAddressType::Inode:

deps/ox/src/ox/fs/filesystem/filesystem.hpp

@@ -20,7 +20,7 @@
 namespace ox {
 
 namespace detail {
-static inline void fsBuffFree(char *buff) noexcept {
+inline void fsBuffFree(char *buff) noexcept {
 	safeDelete(buff);
 }
 }
@@ -41,19 +41,39 @@ class FileSystem {
 
 		Error read(const FileAddress &addr, void *buffer, std::size_t size) noexcept;
 
+		Result<Buffer> read(FileAddress const &addr, size_t size) noexcept;
+
+		Result<Buffer> read(StringViewCR path, size_t size) noexcept;
+
 		Result<Buffer> read(const FileAddress &addr) noexcept;
 
 		Result<Buffer> read(StringViewCR path) noexcept;
 
-		inline Error read(StringViewCR path, void *buffer, std::size_t buffSize) noexcept {
+		Error read(StringViewCR path, void *buffer, std::size_t buffSize) noexcept {
 			return readFilePath(path, buffer, buffSize);
 		}
 
-		inline Error read(uint64_t inode, void *buffer, std::size_t buffSize) noexcept {
+		Error read(uint64_t inode, void *buffer, std::size_t buffSize) noexcept {
 			return readFileInode(inode, buffer, buffSize);
 		}
 
-		Error read(const FileAddress &addr, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept;
+		Error read(
+			FileAddress const &addr,
+			size_t readStart,
+			size_t readSize,
+			void *buffer,
+			size_t *size) noexcept;
+
+		/**
+		 *
+		 * @param path
+		 * @param readStart
+		 * @param readSize
+		 * @param buff
+		 * @return error or number of bytes read
+		 */
+		Result<size_t> read(
+			StringViewCR path, size_t readStart, size_t readSize, ox::Span<char> buff) noexcept;
 
 		virtual Result<Vector<String>> ls(StringViewCR dir) const noexcept = 0;
 
@@ -81,36 +101,36 @@ class FileSystem {
 
 		Error write(const FileAddress &addr, const void *buffer, uint64_t size, FileType fileType = FileType::NormalFile) noexcept;
 
-		inline Error write(StringViewCR path, const void *buffer, uint64_t size, FileType fileType) noexcept {
+		Error write(StringViewCR path, const void *buffer, uint64_t size, FileType fileType) noexcept {
 			return writeFilePath(path, buffer, size, fileType);
 		}
 
-		inline Error write(uint64_t inode, const void *buffer, uint64_t size, FileType fileType) noexcept {
+		Error write(uint64_t inode, const void *buffer, uint64_t size, FileType fileType) noexcept {
 			return writeFileInode(inode, buffer, size, fileType);
 		}
 
-		inline Result<FileStat> stat(uint64_t inode) const noexcept {
+		Result<FileStat> stat(uint64_t inode) const noexcept {
 			return statInode(inode);
 		}
 
-		inline Result<FileStat> stat(StringViewCR path) const noexcept {
+		Result<FileStat> stat(StringViewCR path) const noexcept {
 			return statPath(path);
 		}
 
 		Result<FileStat> stat(const FileAddress &addr) const noexcept;
 
 		[[nodiscard]]
-		inline bool exists(uint64_t inode) const noexcept {
+		bool exists(uint64_t inode) const noexcept {
 			return statInode(inode).ok();
 		}
 
 		[[nodiscard]]
-		inline bool exists(ox::StringView path) const noexcept {
+		bool exists(ox::StringView path) const noexcept {
 			return statPath(path).ok();
 		}
 
 		[[nodiscard]]
-		inline bool exists(FileAddress const&addr) const noexcept {
+		bool exists(FileAddress const&addr) const noexcept {
 			return stat(addr).ok();
 		}
 
@@ -140,7 +160,10 @@ class FileSystem {
 
 		virtual Error readFileInode(uint64_t inode, void *buffer, std::size_t size) noexcept = 0;
 
-		virtual Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept = 0;
+		virtual Error readFilePathRange(
+			StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept = 0;
+
+		virtual Error readFileInodeRange(uint64_t inode, size_t readStart, size_t readSize, void *buffer, size_t *size) noexcept = 0;
 
 		virtual Error removePath(StringViewCR path, bool recursive) noexcept = 0;
 
@@ -154,11 +177,11 @@ class MemFS: public FileSystem {
 	public:
 		Result<const char*> directAccess(const FileAddress &addr) const noexcept;
 
-		inline Result<const char*> directAccess(StringViewCR path) const noexcept {
+		Result<const char*> directAccess(StringViewCR path) const noexcept {
 			return directAccessPath(path);
 		}
 
-		inline Result<const char*> directAccess(uint64_t inode) const noexcept {
+		Result<const char*> directAccess(uint64_t inode) const noexcept {
 			return directAccessInode(inode);
 		}
 
@@ -211,6 +234,9 @@ class FileSystemTemplate: public MemFS {
 
 		Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept override;
 
+		Error readFilePathRange(
+			StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept override;
+
 		Error removePath(StringViewCR path, bool recursive) noexcept override;
 
 		Result<const char*> directAccessInode(uint64_t) const noexcept override;
@@ -358,6 +384,13 @@ Error FileSystemTemplate<FileStore, Directory>::readFileInodeRange(uint64_t inod
 	return m_fs.read(inode, readStart, readSize, reinterpret_cast<uint8_t*>(buffer), size);
 }
 
+template<typename FileStore, typename Directory>
+Error FileSystemTemplate<FileStore, Directory>::readFilePathRange(
+	StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept {
+	OX_REQUIRE(s, stat(path));
+	return readFileInodeRange(s.inode, readStart, readSize, buffer, buffSize);
+}
+
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::removePath(StringViewCR path, bool recursive) noexcept {
 	OX_REQUIRE(fd, fileSystemData());
@@ -435,7 +468,7 @@ Error FileSystemTemplate<FileStore, Directory>::writeFilePath(
 
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::writeFileInode(uint64_t inode, const void *buffer, uint64_t size, FileType fileType) noexcept {
-	oxTrace("ox.fs.FileSystemTemplate.writeFileInode", ox::itoa(inode));
+	oxTrace("ox.fs.FileSystemTemplate.writeFileInode", ox::intToStr(inode));
 	return m_fs.write(inode, buffer, static_cast<size_t>(size), static_cast<uint8_t>(fileType));
 }
 

deps/ox/src/ox/fs/filesystem/passthroughfs.cpp

@@ -93,7 +93,9 @@ Result<FileStat> PassThroughFS::statPath(StringViewCR path) const noexcept {
 	oxTracef("ox.fs.PassThroughFS.statInode", "{} {}", ec.message(), path);
 	const uint64_t size = type == FileType::Directory ? 0 : std::filesystem::file_size(p, ec);
 	oxTracef("ox.fs.PassThroughFS.statInode.size", "{} {}", path, size);
-	OX_RETURN_ERROR(ox::Error(static_cast<ox::ErrorCode>(ec.value()), "PassThroughFS: stat failed"));
+	if (auto err = ec.value()) {
+		return ox::Error{static_cast<ox::ErrorCode>(err), "PassThroughFS: stat failed"};
+	}
 	return FileStat{0, 0, size, type};
 }
 
@@ -154,6 +156,25 @@ Error PassThroughFS::readFileInode(uint64_t, void*, std::size_t) noexcept {
 	return ox::Error(1, "readFileInode(uint64_t, void*, std::size_t) is not supported by PassThroughFS");
 }
 
+Error PassThroughFS::readFilePathRange(
+	StringViewCR path, size_t const readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept {
+	try {
+		std::ifstream file(m_path / stripSlash(path), std::ios::binary | std::ios::ate);
+		auto const size = static_cast<size_t>(file.tellg());
+		readSize = ox::min(readSize, size);
+		file.seekg(static_cast<off_t>(readStart), std::ios::beg);
+		if (readSize > *buffSize) {
+			oxTracef("ox.fs.PassThroughFS.read.error", "Read failed: Buffer too small: {}", path);
+			return ox::Error{1};
+		}
+		file.read(static_cast<char*>(buffer), static_cast<std::streamsize>(readSize));
+		return {};
+	} catch (std::fstream::failure const &f) {
+		oxTracef("ox.fs.PassThroughFS.read.error", "Read of {} failed: {}", path, f.what());
+		return ox::Error{2};
+	}
+}
+
 Error PassThroughFS::readFileInodeRange(uint64_t, std::size_t, std::size_t, void*, std::size_t*) noexcept {
 	// unsupported
 	return ox::Error(1, "read(uint64_t, std::size_t, std::size_t, void*, std::size_t*) is not supported by PassThroughFS");
@@ -185,8 +206,7 @@ Error PassThroughFS::writeFileInode(uint64_t, const void*, uint64_t, FileType) n
 }
 
 std::string_view PassThroughFS::stripSlash(StringView path) noexcept {
-	const auto pathLen = ox::strlen(path);
-	for (auto i = 0u; i < pathLen && path[0] == '/'; i++) {
+	for (auto i = 0u; i < path.len() && path[0] == '/'; i++) {
 		path = substr(path, 1);
 	}
 	return {path.data(), path.bytes()};

deps/ox/src/ox/fs/filesystem/passthroughfs.hpp

@@ -71,6 +71,9 @@ class PassThroughFS: public FileSystem {
 
 		Error readFileInode(uint64_t inode, void *buffer, std::size_t size) noexcept override;
 
+		Error readFilePathRange(
+			StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept override;
+
 		Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept override;
 
 		Error removePath(StringViewCR path, bool recursive) noexcept override;

deps/ox/src/ox/fs/test/tests.cpp

@@ -119,7 +119,9 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 				auto constexpr path = ox::StringLiteral("/usr/share/charset.gbag");
 				ox::PathIterator it(path.c_str(), path.len());
 				auto buff = static_cast<char*>(ox_alloca(path.len() + 1));
+				OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 				oxAssert(it.dirPath(buff, path.len()) == 0 && ox::strcmp(buff, "/usr/share/") == 0, "PathIterator shows incorrect dir path");
+				OX_ALLOW_UNSAFE_BUFFERS_END
 				return ox::Error(0);
 			}
 		},
@@ -127,7 +129,9 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 			"PathIterator::hasNext",
 			[](ox::StringView) {
 				const auto path = "/file1";
+				OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 				ox::PathIterator it(path, ox::strlen(path));
+				OX_ALLOW_UNSAFE_BUFFERS_END
 				oxAssert(it.hasNext(), "PathIterator shows incorrect hasNext");
 				oxAssert(!it.next().hasNext(), "PathIterator shows incorrect hasNext");
 				return ox::Error(0);
@@ -163,9 +167,11 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 			[](ox::StringView) {
 				constexpr auto buffLen = 5000;
 				constexpr auto str1 = "Hello, World!";
+				OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 				constexpr auto str1Len = ox::strlen(str1) + 1;
 				constexpr auto str2 = "Hello, Moon!";
 				constexpr auto str2Len = ox::strlen(str2) + 1;
+				OX_ALLOW_UNSAFE_BUFFERS_END
 				auto list = new (ox_alloca(buffLen)) ox::ptrarith::NodeBuffer<uint32_t, ox::FileStoreItem<uint32_t>>(buffLen);
 				oxAssert(ox::FileStore32::format(list, buffLen), "FileStore::format failed.");
 				ox::FileStore32 fileStore(list, buffLen);

deps/ox/src/ox/fs/tool.cpp

@@ -57,7 +57,9 @@ static ox::Error runRead(ox::FileSystem *fs, ox::Span<const char*> args) noexcep
 		return ox::Error(1);
 	}
 	OX_REQUIRE(buff, fs->read(ox::StringView(args[1])));
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	std::ignore = fwrite(buff.data(), sizeof(decltype(buff)::value_type), buff.size(), stdout);
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	return ox::Error(0);
 }
 

deps/ox/src/ox/mc/intops.hpp

@@ -71,7 +71,9 @@ constexpr McInt encodeInteger(I pInput) noexcept {
 	// move input to uint64_t to allow consistent bit manipulation, and to avoid
 	// overflow concerns
 	uint64_t val = 0;
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	ox::memcpy(&val, &input, sizeof(input));
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	if (val) {
 		// bits needed to represent number factoring in space possibly
 		// needed for signed bit
@@ -94,7 +96,9 @@ constexpr McInt encodeInteger(I pInput) noexcept {
 		}
 		if (bytes == 9) {
 			out.data[0] = bytesIndicator;
+			OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 			ox::memcpy(&out.data[1], &leVal, 8);
+			OX_ALLOW_UNSAFE_BUFFERS_END
 			if (inputNegative) {
 				out.data[1] |= 0b1000'0000;
 			}
@@ -104,7 +108,9 @@ constexpr McInt encodeInteger(I pInput) noexcept {
 			auto intermediate =
 				static_cast<uint64_t>(leVal.raw() | (negBit << (valBits - 1))) << bytes |
 				static_cast<uint64_t>(bytesIndicator);
+			OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 			ox::memcpy(&out.data[0], &intermediate, sizeof(intermediate));
+			OX_ALLOW_UNSAFE_BUFFERS_END
 		}
 		out.length = bytes;
 	}
@@ -160,7 +166,9 @@ constexpr Result<I> decodeInteger(Reader_c auto&rdr, std::size_t *bytesRead) noe
 			ox::Array<uint32_t, 2> d = {};
 			//d[0] = decoded & 0xffff'ffff;
 			//d[1] = decoded >> 32;
+		 	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 			ox::memcpy(&d[0], &decoded, sizeof(decoded));
+		 	OX_ALLOW_UNSAFE_BUFFERS_END
 			auto bit = negBit;
 			for (; bit < ox::min<std::size_t>(Bits<I>, 32); ++bit) {
 				d[0] |= 1 << bit;
@@ -175,7 +183,9 @@ constexpr Result<I> decodeInteger(Reader_c auto&rdr, std::size_t *bytesRead) noe
 				d[0] = d[1];
 				d[1] = d0Tmp;
 			}
+		 	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 			ox::memcpy(&out, &d[0], sizeof(out));
+			OX_ALLOW_UNSAFE_BUFFERS_END
 			return out;
 		}
 	}

deps/ox/src/ox/mc/write.hpp

@@ -214,7 +214,12 @@ template<Writer_c Writer>
 constexpr Error MetalClawWriter<Writer>::fieldCString(const char*, const char *const*val, std::size_t) noexcept {
 	bool fieldSet = false;
 	if (!m_unionIdx.has_value() || *m_unionIdx == m_field) {
+		OX_ALLOW_UNSAFE_BUFFERS_BEGIN
+		// this strlen is tolerated because sometimes 0 gets passed to
+		// the size param, which is a lie
+		// this code should be cleaned up at some point...
 		const auto strLen = *val ? ox::strlen(*val) : 0;
+		OX_ALLOW_UNSAFE_BUFFERS_END
 		// write the length
 		const auto strLenBuff = mc::encodeInteger(strLen);
 		OX_RETURN_ERROR(m_writer.write(reinterpret_cast<const char*>(strLenBuff.data.data()), strLenBuff.length));

deps/ox/src/ox/model/modelvalue.hpp

@@ -997,7 +997,7 @@ constexpr ModelValue::ModelValue(const ModelValue &other) noexcept {
 		case Type::SignedInteger16:
 		case Type::SignedInteger32:
 		case Type::SignedInteger64:
-			ox::memcpy(&m_data, &other.m_data, sizeof(m_data));
+			m_data = other.m_data;
 			break;
 		case Type::String:
 			m_data.str = new String(other.get<String>());
@@ -1030,8 +1030,8 @@ constexpr ModelValue::ModelValue(ModelValue &&other) noexcept {
 		case Type::SignedInteger16:
 		case Type::SignedInteger32:
 		case Type::SignedInteger64:
-			ox::memcpy(&m_data, &other.m_data, sizeof(m_data));
-			ox::memset(&other.m_data, 0, sizeof(m_data));
+			m_data = other.m_data;
+			other.m_data.ui64 = 0;
 			break;
 		case Type::String:
 			m_data.str = other.m_data.str;
@@ -1223,7 +1223,7 @@ constexpr ModelValue &ModelValue::operator=(const ModelValue &other) noexcept {
 		case Type::SignedInteger16:
 		case Type::SignedInteger32:
 		case Type::SignedInteger64:
-			ox::memcpy(&m_data, &other.m_data, sizeof(m_data));
+			m_data = other.m_data;
 			break;
 		case Type::String:
 			m_data.str = new String(other.get<String>());
@@ -1261,8 +1261,8 @@ constexpr ModelValue &ModelValue::operator=(ModelValue &&other) noexcept {
 		case Type::SignedInteger16:
 		case Type::SignedInteger32:
 		case Type::SignedInteger64:
-			ox::memcpy(&m_data, &other.m_data, sizeof(m_data));
-			ox::memset(&other.m_data, 0, sizeof(m_data));
+			m_data = other.m_data;
+			other.m_data = {};
 			break;
 		case Type::String:
 			m_data.str = other.m_data.str;

deps/ox/src/ox/oc/read.cpp

@@ -15,7 +15,7 @@ namespace ox {
 
 OrganicClawReader::OrganicClawReader(const uint8_t *buff, std::size_t buffSize) {
 	auto json = reinterpret_cast<const char*>(buff);
-	auto jsonLen = ox::strnlen(json, buffSize);
+	auto jsonLen = ox::strnlen_s(json, buffSize);
 	Json::CharReaderBuilder parserBuilder;
 	auto parser = std::unique_ptr<Json::CharReader>(parserBuilder.newCharReader());
 	if (!parser->parse(json, json + jsonLen, &m_json, nullptr)) {

deps/ox/src/ox/oc/read.hpp

@@ -8,7 +8,11 @@
 
 #pragma once
 
+#include <ox/std/def.hpp>
+
+OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 #include <json/json.h>
+OX_ALLOW_UNSAFE_BUFFERS_END
 
 #include <ox/model/fieldcounter.hpp>
 #include <ox/model/modelhandleradaptor.hpp>

deps/ox/src/ox/oc/write.hpp

@@ -8,7 +8,11 @@
 
 #pragma once
 
+#include <ox/std/def.hpp>
+
+OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 #include <json/json.h>
+OX_ALLOW_UNSAFE_BUFFERS_END
 
 #include <ox/model/fieldcounter.hpp>
 #include <ox/model/modelhandleradaptor.hpp>
@@ -258,7 +262,9 @@ Result<ox::Buffer> writeOC(const auto &val) noexcept {
 	const auto str = Json::writeString(jsonBuilder, writer.m_json);
 	Result<Buffer> buff;
 	buff.value.resize(str.size() + 1);
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	memcpy(buff.value.data(), str.data(), str.size() + 1);
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	return buff;
 }
 
@@ -270,7 +276,9 @@ Result<ox::String> writeOCString(const auto &val) noexcept {
 	const auto str = Json::writeString(jsonBuilder, writer.m_json);
 	Result<ox::String> buff;
 	buff.value.resize(str.size());
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	memcpy(buff.value.data(), str.data(), str.size() + 1);
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	return buff;
 }
 

deps/ox/src/ox/std/array.hpp

@@ -181,13 +181,13 @@ constexpr Array<T, ArraySize> &Array<T, ArraySize>::operator=(Array &&other) noe
 
 template<typename T, std::size_t ArraySize>
 constexpr T &Array<T, ArraySize>::operator[](std::size_t i) noexcept {
-	ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Array access overflow");
+	boundsCheck(__FILE__, __LINE__, i, size(), "Array access overflow");
 	return m_items[i];
 }
 
 template<typename T, std::size_t ArraySize>
 constexpr const T &Array<T, ArraySize>::operator[](std::size_t i) const noexcept {
-	ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Array access overflow");
+	boundsCheck(__FILE__, __LINE__, i, size(), "Array access overflow");
 	return m_items[i];
 }
 

deps/ox/src/ox/std/cstrops.hpp

@@ -30,9 +30,12 @@ constexpr T1 strncpy(T1 dest, T2 src, std::size_t maxLen) noexcept {
 }
 
 [[nodiscard]]
-constexpr auto strnlen(const char *str1, std::size_t maxLen) noexcept {
-	std::size_t len = 0;
-	for (; len < maxLen && str1[len]; len++);
+constexpr size_t strnlen_s(const char *str, size_t const maxLen) noexcept {
+	if (!str) [[unlikely]] {
+		return 0;
+	}
+	size_t len = 0;
+	for (; len < maxLen && str[len]; len++);
 	return len;
 }
 

deps/ox/src/ox/std/defines.hpp

@@ -41,6 +41,12 @@ constexpr auto Debug = true;
 constexpr auto Debug = false;
 #endif
 
+#if defined(OX_CHECK_BOUNDS)
+constexpr auto CheckBounds = true;
+#else
+constexpr auto CheckBounds = Debug;
+#endif
+
 #if defined(NDEBUG)
 constexpr auto NDebug = true;
 #else

deps/ox/src/ox/std/error.hpp

@@ -330,4 +330,17 @@ constexpr void primitiveAssert(char const*file, int line, bool pass, char const*
 	}
 }
 
+constexpr void boundsCheck(
+	char const*file,
+	int const line,
+	size_t const i,
+	size_t const sz,
+	char const*msg) noexcept {
+	if constexpr(defines::CheckBounds) {
+		if (i >= sz) [[unlikely]] {
+			panic(file, line, msg, ox::Error{1});
+		}
+	}
+}
+
 }

deps/ox/src/ox/std/istring.hpp

@@ -245,7 +245,7 @@ struct MaybeView<ox::IString<sz>> {
 
 template<Integer_c Integer>
 [[nodiscard]]
-constexpr auto itoa(Integer v) noexcept {
+constexpr auto intToStr(Integer v) noexcept {
 	constexpr auto Cap = [] {
 		auto out = 0;
 		switch (sizeof(Integer)) {

deps/ox/src/ox/std/iterator.hpp

@@ -133,17 +133,17 @@ struct SpanIterator {
 		}
 
 		constexpr PtrType operator->() const noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, m_offset < m_max, "SpanIterator access overflow");
+			boundsCheck(__FILE__, __LINE__, m_offset, m_max, "SpanIterator access overflow");
 			return &m_t[m_offset];
 		}
 
 		constexpr RefType operator*() const noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, m_offset < m_max, "SpanIterator access overflow");
+			boundsCheck(__FILE__, __LINE__, m_offset, m_max, "SpanIterator access overflow");
 			return m_t[m_offset];
 		}
 
 		constexpr RefType operator[](std::size_t s) const noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, s < m_max, "SpanIterator access overflow");
+			boundsCheck(__FILE__, __LINE__, s, m_max, "SpanIterator access overflow");
 			return m_t[s];
 		}
 

deps/ox/src/ox/std/span.hpp

@@ -8,6 +8,10 @@
 
 #pragma once
 
+#if __has_include(<array>)
+#include <array>
+#endif
+
 #include "array.hpp"
 #include "bit.hpp"
 #include "def.hpp"
@@ -35,6 +39,20 @@ class Span {
 
 		constexpr Span() noexcept = default;
 
+#if __has_include(<array>)
+		template<std::size_t sz>
+		constexpr Span(std::array<T, sz> &a) noexcept:
+			m_items(a.data()),
+			m_size(a.size()) {
+		}
+
+		template<std::size_t sz>
+		constexpr Span(std::array<ox::remove_const_t<T>, sz> const&a) noexcept:
+			m_items(a.data()),
+			m_size(a.size()) {
+		}
+#endif
+
 		template<std::size_t sz>
 		constexpr Span(ox::Array<T, sz> &a) noexcept:
 			m_items(a.data()),
@@ -129,22 +147,22 @@ class Span {
 		}
 
 		constexpr T &operator[](std::size_t i) noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Span access overflow");
+			boundsCheck(__FILE__, __LINE__, i, size(), "Span access overflow");
 			return m_items[i];
 		}
 
 		constexpr T const&operator[](std::size_t i) const noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Span access overflow");
+			boundsCheck(__FILE__, __LINE__, i, size(), "Span access overflow");
 			return m_items[i];
 		}
 
 		constexpr Span operator+(size_t i) const noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Span access overflow");
+			boundsCheck(__FILE__, __LINE__, i, size(), "Span access overflow");
 			return {m_items + i, m_size - i};
 		}
 
 		constexpr Span operator+=(size_t i) noexcept {
-			ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Span access overflow");
+			boundsCheck(__FILE__, __LINE__, i, size(), "Span access overflow");
 			m_items += i;
 			m_size -= i;
 			return *this;

deps/ox/src/ox/std/string.hpp

@@ -28,7 +28,7 @@ OX_CLANG_NOWARN_BEGIN(-Wunsafe-buffer-usage)
 namespace ox {
 
 template<typename Integer>
-constexpr ox::IString<21> itoa(Integer v) noexcept;
+constexpr ox::IString<21> intToStr(Integer v) noexcept;
 
 template<std::size_t SmallStringSize_v>
 class BasicString {
@@ -213,22 +213,22 @@ class BasicString {
 
 		[[nodiscard]]
 		constexpr const char *c_str() const noexcept {
-			return static_cast<const char*>(m_buff.data());
+			return m_buff.data();
 		}
 
 		[[nodiscard]]
-		inline explicit operator const char*() const {
+		constexpr explicit operator const char*() const {
 			return c_str();
 		}
 
 #if __has_include(<string>)
 		[[nodiscard]]
-		inline std::string toStdString() const {
+		std::string toStdString() const {
 			return c_str();
 		}
 
 		[[nodiscard]]
-		inline explicit operator std::string() const {
+		explicit operator std::string() const {
 			return c_str();
 		}
 #endif
@@ -317,13 +317,13 @@ constexpr BasicString<SmallStringSize_v> &BasicString<SmallStringSize_v>::operat
 
 template<std::size_t SmallStringSize_v>
 constexpr BasicString<SmallStringSize_v> &BasicString<SmallStringSize_v>::operator=(int64_t i) noexcept {
-	set(ox::itoa(i));
+	set(ox::intToStr(i));
 	return *this;
 }
 
 template<std::size_t SmallStringSize_v>
 constexpr BasicString<SmallStringSize_v> &BasicString<SmallStringSize_v>::operator=(uint64_t i) noexcept {
-	set(ox::itoa(i));
+	set(ox::intToStr(i));
 	return *this;
 }
 
@@ -371,7 +371,7 @@ constexpr BasicString<SmallStringSize_v> &BasicString<SmallStringSize_v>::operat
 
 template<std::size_t SmallStringSize_v>
 constexpr BasicString<SmallStringSize_v> &BasicString<SmallStringSize_v>::operator+=(Integer_c auto i) noexcept {
-	auto const str = ox::itoa(i);
+	auto const str = ox::intToStr(i);
 	return this->operator+=(str.c_str());
 }
 
@@ -414,7 +414,7 @@ constexpr BasicString<SmallStringSize_v> BasicString<SmallStringSize_v>::operato
 
 template<std::size_t SmallStringSize_v>
 constexpr BasicString<SmallStringSize_v> BasicString<SmallStringSize_v>::operator+(Integer_c auto i) const noexcept {
-	auto const str = ox::itoa(i);
+	auto const str = ox::intToStr(i);
 	return *this + str;
 }
 

deps/ox/src/ox/std/stringliteral.hpp

@@ -32,7 +32,9 @@ class StringLiteral: public detail::BaseStringView {
 
 		constexpr explicit StringLiteral(const char *str, std::size_t len) noexcept: BaseStringView(str, len) {}
 
+		OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 		constexpr explicit StringLiteral(char const *str) noexcept: StringLiteral(str, ox::strlen(str)) {}
+		OX_ALLOW_UNSAFE_BUFFERS_END
 
 		constexpr StringLiteral &operator=(StringLiteral const&other) noexcept {
 			if (&other != this) {

deps/ox/src/ox/std/stringview.hpp

@@ -100,7 +100,8 @@ constexpr auto toStdStringView(StringViewCR sv) noexcept {
 #endif
 
 
-constexpr ox::Result<int> atoi(ox::StringViewCR str) noexcept {
+constexpr ox::Result<int> strToInt(ox::StringViewCR str) noexcept {
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	int total = 0;
 	int multiplier = 1;
 	for (auto i = static_cast<int64_t>(str.len()) - 1; i != -1; --i) {
@@ -113,6 +114,7 @@ constexpr ox::Result<int> atoi(ox::StringViewCR str) noexcept {
 		}
 	}
 	return total;
+	OX_ALLOW_UNSAFE_BUFFERS_END
 }
 
 

deps/ox/src/ox/std/strops.cpp

@@ -9,6 +9,8 @@
 #include "def.hpp"
 #include "strops.hpp"
 
+OX_ALLOW_UNSAFE_BUFFERS_BEGIN
+
 static_assert(ox::strcmp("asdf", "hijk") < 0, "asdf < hijk");
 static_assert(ox::strcmp("hijk", "asdf") > 0, "hijk > asdf");
 static_assert(ox::strcmp("resize", "read") > 0, "resize > read");
@@ -42,3 +44,5 @@ std::size_t strlen(const char *str) {
 }
 
 #endif
+
+OX_ALLOW_UNSAFE_BUFFERS_END

deps/ox/src/ox/std/test/tests.cpp

@@ -145,6 +145,7 @@ OX_CLANG_NOWARN_END
 			return ox::Error{};
 		}
 	},
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
 	{
 		"ABCDEFG != HIJKLMN",
 		[]() {
@@ -169,6 +170,7 @@ OX_CLANG_NOWARN_END
 			return ox::Error(ox::memcmp("ABCDEFGHI", "ABCDEFG", 7) != 0);
 		}
 	},
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	{
 		"IString",
 		[]() {

deps/ox/src/ox/std/tracehook.cpp

@@ -39,6 +39,8 @@ enum LogChan {
 	Debug = 4,
 };
 
+OX_ALLOW_UNSAFE_BUFFERS_BEGIN
+
 template<LogChan chan>
 static void log(ox::StringViewCR str) {
 	const auto sz = ox::min<std::size_t>(0x100, str.bytes());
@@ -103,5 +105,7 @@ void oxTraceHook([[maybe_unused]] const char *file, [[maybe_unused]] int line,
 #endif
 }
 
+OX_ALLOW_UNSAFE_BUFFERS_END
+
 }
 

deps/ox/src/ox/std/utility.hpp

@@ -27,6 +27,48 @@ constexpr void swap(T &a, T &b) noexcept {
 	b = std::move(temp);
 }
 
+template<typename T, typename U>
+constexpr bool cmp_equal(T const t, U const u) noexcept {
+	if constexpr(ox::is_signed_v<T> == ox::is_signed_v<U>) {
+		return t == u;
+	} else if constexpr(ox::is_signed_v<T>) {
+		return ox::Signed<T>{t} == u;
+	} else {
+		return t == ox::Signed<U>{u};
+	}
+}
+
+template<typename T, typename U>
+constexpr bool cmp_less(T const t, U const u) noexcept {
+	if constexpr(ox::is_signed_v<T> == ox::is_signed_v<U>) {
+		return t < u;
+	} else if constexpr(ox::is_signed_v<T>) {
+		return ox::Signed<T>{t} < u;
+	} else {
+		return t < ox::Signed<U>{u};
+	}
+}
+
+template<typename T, typename U>
+constexpr bool cmp_not_equal(T const t, U const u) noexcept {
+	return !std::cmp_equal(t, u);
+}
+
+template<typename T, typename U>
+constexpr bool cmp_greater(T const t, U const u) noexcept {
+	return std::cmp_less(u, t);
+}
+
+template<typename T, typename U>
+constexpr bool cmp_less_equal(T const t, U const u) noexcept {
+	return !std::cmp_less(u, t);
+}
+
+template<typename T, typename U>
+constexpr bool cmp_greater_equal(T const t, U const u) noexcept {
+	return !std::cmp_less(t, u);
+}
+
 }
 #endif
 

deps/ox/src/ox/std/uuid.hpp

@@ -105,6 +105,10 @@ class UUID {
 		ox::Array<uint8_t, 16> m_value{};
 
 	public:
+
+		static constexpr auto TypeName = "net.drinkingtea.ox.UUID";
+		static constexpr auto TypeVersion = 1;
+
 		static void seedGenerator(const RandomSeed &seed) noexcept;
 
 		static ox::Result<UUID> generate() noexcept;

deps/ox/src/ox/std/vector.hpp

@@ -311,6 +311,8 @@ class Vector: detail::VectorAllocator<T, Allocator, SmallVectorSize> {
 		 */
 		constexpr Error unordered_erase(std::size_t pos) noexcept(useNoexcept);
 
+		constexpr Error remove(T const &val);
+
 		constexpr void reserve(std::size_t cap) noexcept(useNoexcept);
 
 		constexpr void shrink_to_fit() noexcept(useNoexcept);
@@ -427,13 +429,13 @@ constexpr Vector<T, SmallVectorSize, Allocator> &Vector<T, SmallVectorSize, Allo
 
 template<typename T, std::size_t SmallVectorSize, typename Allocator>
 constexpr T &Vector<T, SmallVectorSize, Allocator>::operator[](std::size_t i) noexcept {
-	ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Vector access overflow");
+	boundsCheck(__FILE__, __LINE__, i, size(), "Vector access overflow");
 	return m_items[i];
 }
 
 template<typename T, std::size_t SmallVectorSize, typename Allocator>
 constexpr const T &Vector<T, SmallVectorSize, Allocator>::operator[](std::size_t i) const noexcept {
-	ox::primitiveAssert(__FILE__, __LINE__, i < size(), "Vector access overflow");
+	boundsCheck(__FILE__, __LINE__, i, size(), "Vector access overflow");
 	return m_items[i];
 }
 
@@ -659,6 +661,17 @@ constexpr Error Vector<T, SmallVectorSize, Allocator>::unordered_erase(std::size
 	return ox::Error(0);
 }
 
+template<typename T, std::size_t SmallVectorSize, typename Allocator>
+constexpr ox::Error Vector<T, SmallVectorSize, Allocator>::remove(T const &val) {
+	for (size_t i{}; auto const &v : *this) {
+		if (v == val) {
+			return erase(i).error;
+		}
+		++i;
+	}
+	return ox::Error{1, "element not found"};
+}
+
 template<typename T, std::size_t SmallVectorSize, typename Allocator>
 constexpr void Vector<T, SmallVectorSize, Allocator>::reserve(std::size_t cap) noexcept(useNoexcept) {
 	if (cap <= m_cap) {

release-notes.md

@@ -1,16 +1,51 @@
-# d2025.02
+# d2025.05.1
+
+* TileSheetEditor: Fix overrun errors when switching subsheets, clear selection
+  on switch (261e324acd)
+* Fix new build error that occurs in MSVC (26d5048e6720c4c2d52508a6ee44c67dd9fe3ee5)
+
+# d2025.05.0
+
+* Add app icon for both window and file
+* Change application font to Roboto Medium
+* Closing application will now confirm with user if any files have unsaved
+  changes.
+* UUID duplicates will now be reported when opening a project
+* Deleting a directory now closes files in that directory
+* Delete key now initiates deletion of selected directory
+* Remove ability to re-order tabs. There were bugs associated with that.
+* TileSheetEditor: Fix selection clearing in to work when clicking outside
+  image.
+* TileSheetEditor: Fix Delete Tile functionality, which was completely broken
+* PaletteEditor: Fix color number key range in. Previously, pressing A caused
+  the editor to jump to the last color.
+* PaletteEditor: page rename will now take effect upon pressing enter if the
+  text input has focus
+
+# d2025.02.1
+
+* Fix closing tab with unsaved changes (a44c5acc4b)
+
+# d2025.02.0
 
 * Rename core namespace to gfx.
 * Add PaletteV5 to accommodate namespace change.
 * Add TileSheetV5. TileSheetV5 retains the bpp field for the sake of
   CompactTileSheet, but always store it pixel as 8 bpp for itself.
 * Add ability to move subsheets in the subsheet tree.
-* Add Flip X and Flip Y button for TileSheet Editor.
+* Add Flip X and Flip Y functionality to TileSheet Editor.
+* Add rotate functionality to TileSheet Editor.
+* Add draw line tool to TileSheet editor
 * Replace file picker combo boxes with a browse button and file picker, and
   support for dragging files from the project explorer.
+* Add ability to jump to a color in a Palette by double clicking on the
+  color from the TileSheet editor
 * Add ability to create directories.
 * Add ability to add files to specific directories.
 * Add ability to delete files from the project explorer.
 * Ctrl-<num key> keyboard shortcuts for jumping between tabs.
 * Fix Palette Editor to ignore keyboard input when popups are open.
 * Palette Editor move color mechanism now uses drag and drop.
+* Add ability to reorder Palette pages.
+* Add warning for closing a tab with unsaved changes.
+* Add ability to close a tab with Ctrl/Cmd-W

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.CompactPalette;1

@@ -0,0 +1,23 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "pages",
+			"subscriptLevels" : 2,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				},
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "B.uint16;0"
+		}
+	],
+	"preloadable" : true,
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.CompactPalette",
+	"typeVersion" : 1
+}

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.CompactTileSheet;1

@@ -0,0 +1,28 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "bpp",
+			"typeId" : "B.int8;0"
+		},
+		{
+			"fieldName" : "defaultPalette",
+			"typeId" : "net.drinkingtea.ox.FileAddress;1"
+		},
+		{
+			"fieldName" : "pixels",
+			"subscriptLevels" : 1,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "B.uint8;0"
+		}
+	],
+	"preloadable" : true,
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.CompactTileSheet",
+	"typeVersion" : 1
+}

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.Palette.PalettePage;2

@@ -0,0 +1,23 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "name",
+			"typeId" : "net.drinkingtea.ox.BasicString#8#;1"
+		},
+		{
+			"fieldName" : "colors",
+			"subscriptLevels" : 1,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "net.drinkingtea.nostalgia.gfx.PaletteColor;2"
+		}
+	],
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.Palette.PalettePage",
+	"typeVersion" : 2
+}

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.Palette;5

@@ -0,0 +1,31 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "colorNames",
+			"subscriptLevels" : 1,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "net.drinkingtea.ox.BasicString#8#;1"
+		},
+		{
+			"fieldName" : "pages",
+			"subscriptLevels" : 1,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "net.drinkingtea.nostalgia.gfx.Palette.PalettePage;2"
+		}
+	],
+	"preloadable" : true,
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.Palette",
+	"typeVersion" : 5
+}

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.PaletteColor;2

@@ -0,0 +1,24 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "r",
+			"typeId" : "B.uint8;0"
+		},
+		{
+			"fieldName" : "g",
+			"typeId" : "B.uint8;0"
+		},
+		{
+			"fieldName" : "b",
+			"typeId" : "B.uint8;0"
+		},
+		{
+			"fieldName" : "a",
+			"typeId" : "B.uint8;0"
+		}
+	],
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.PaletteColor",
+	"typeVersion" : 2
+}

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.TileSheet.SubSheet;5

@@ -0,0 +1,46 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "id",
+			"typeId" : "B.int32;0"
+		},
+		{
+			"fieldName" : "name",
+			"typeId" : "net.drinkingtea.ox.BasicString#8#;1"
+		},
+		{
+			"fieldName" : "rows",
+			"typeId" : "B.int32;0"
+		},
+		{
+			"fieldName" : "columns",
+			"typeId" : "B.int32;0"
+		},
+		{
+			"fieldName" : "subsheets",
+			"subscriptLevels" : 1,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "net.drinkingtea.nostalgia.gfx.TileSheet.SubSheet;5"
+		},
+		{
+			"fieldName" : "pixels",
+			"subscriptLevels" : 1,
+			"subscriptStack" : 
+			[
+				{
+					"subscriptType" : 4
+				}
+			],
+			"typeId" : "B.uint8;0"
+		}
+	],
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.TileSheet.SubSheet",
+	"typeVersion" : 5
+}

sample_project/.nostalgia/type_descriptors/net.drinkingtea.nostalgia.gfx.TileSheet;5

@@ -0,0 +1,24 @@
+O1;net.drinkingtea.ox.TypeDescriptor;1;{
+	"fieldList" : 
+	[
+		{
+			"fieldName" : "bpp",
+			"typeId" : "B.int8;0"
+		},
+		{
+			"fieldName" : "idIt",
+			"typeId" : "B.int32;0"
+		},
+		{
+			"fieldName" : "defaultPalette",
+			"typeId" : "net.drinkingtea.ox.BasicString#8#;1"
+		},
+		{
+			"fieldName" : "subsheet",
+			"typeId" : "net.drinkingtea.nostalgia.gfx.TileSheet.SubSheet;5"
+		}
+	],
+	"primitiveType" : 5,
+	"typeName" : "net.drinkingtea.nostalgia.gfx.TileSheet",
+	"typeVersion" : 5
+}

sample_project/Palettes/SC9K_Logo.npal

@@ -0,0 +1,28 @@
+K1;3d1a77ec-265f-4905-2061-4f1003ee2189;O1;net.drinkingtea.nostalgia.gfx.Palette;5;{
+	"colorNames" : 
+	[
+		"Color 1",
+		"Color 2",
+		"Color 3"
+	],
+	"pages" : 
+	[
+		{
+			"colors" : 
+			[
+				{
+					"b" : 10,
+					"g" : 5,
+					"r" : 5
+				},
+				{},
+				{
+					"b" : 31,
+					"g" : 31,
+					"r" : 31
+				}
+			],
+			"name" : "Page 1"
+		}
+	]
+}

sample_project/TileSheets/NS_Logo16.nts

@@ -0,0 +1,269 @@
+K1;e7ae945e-d6c5-4444-5738-be95b4e5937a;O1;net.drinkingtea.nostalgia.gfx.TileSheet;5;{
+	"bpp" : 4,
+	"defaultPalette" : "uuid://c79f21e2-f74f-4ad9-90ed-32b0ef7da6ed",
+	"subsheet" : 
+	{
+		"columns" : 2,
+		"name" : "Root",
+		"pixels" : 
+		[
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			3,
+			3,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			1,
+			0,
+			0,
+			2,
+			3,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			3,
+			2,
+			0,
+			0,
+			1,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			3,
+			3,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			1,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0,
+			0
+		],
+		"rows" : 2
+	}
+}

src/nostalgia/modules/CMakeLists.txt

@@ -1,7 +1,7 @@
 # module dir list
 
 add_subdirectory(gfx)
-add_subdirectory(scene)
+add_subdirectory(sound)
 
 # module libraries
 
@@ -13,8 +13,8 @@ add_library(
 target_link_libraries(
 	NostalgiaKeelModules PUBLIC
 		Keel
-		NostalgiaCore-Keel
-		NostalgiaScene-Keel
+		NostalgiaGfx-Keel
+		NostalgiaSound-Keel
 )
 install(
 	FILES
@@ -32,8 +32,8 @@ if(NOSTALGIA_BUILD_STUDIO)
 	target_link_libraries(
 		NostalgiaStudioModules PUBLIC
 			StudioAppLib
-			NostalgiaCore-Studio-ImGui
-			NostalgiaScene-Studio
+			NostalgiaGfx-Studio-ImGui
+			NostalgiaSound-Studio-ImGui
 	)
 	install(
 		 FILES

src/nostalgia/modules/gfx/include/nostalgia/gfx/gfx.hpp

@@ -238,7 +238,7 @@ uint_t spriteCount(Context &ctx) noexcept;
 
 ox::Error initConsole(Context &ctx) noexcept;
 
-void puts(Context &ctx, int column, int row, ox::StringViewCR str) noexcept;
+void consoleWrite(Context &ctx, int column, int row, ox::StringViewCR str) noexcept;
 
 }
 

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

@@ -16,23 +16,6 @@
 
 namespace nostalgia::gfx {
 
-struct SubSheetTemplate {
-	static constexpr auto TypeName = "net.drinkingtea.nostalgia.gfx.SubSheetTemplate";
-	static constexpr auto TypeVersion = 1;
-	ox::String name;
-	int32_t width{};
-	int32_t height{};
-	ox::Vector<SubSheetTemplate> subsheets;
-};
-
-OX_MODEL_BEGIN(SubSheetTemplate)
-	OX_MODEL_FIELD(name)
-	OX_MODEL_FIELD(width)
-	OX_MODEL_FIELD(height)
-	OX_MODEL_FIELD(subsheets)
-OX_MODEL_END()
-
-
 // Predecessor to TileSheet, kept for backward compatibility
 struct TileSheetV1 {
 	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.NostalgiaGraphic";
@@ -52,7 +35,7 @@ constexpr bool valid(TileSheetV1 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && ts.pixels.size() == bytes;
 }
 
-constexpr ox::Error repair(TileSheetV1 &ts, int bpp) noexcept {
+constexpr ox::Error repair(TileSheetV1 &ts, int const bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ts.columns * ts.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 	ts.pixels.resize(bytes);
 	return {};
@@ -101,7 +84,7 @@ constexpr bool valid(TileSheetV2 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet, ts.bpp);
 }
 
-constexpr void repair(TileSheetV2::SubSheet &ss, int bpp) noexcept {
+constexpr void repair(TileSheetV2::SubSheet &ss, int const bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 	ss.pixels.resize(bytes);
 	for (auto &s : ss.subsheets) {
@@ -171,7 +154,7 @@ constexpr bool valid(TileSheetV3 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet, ts.bpp);
 }
 
-constexpr void repair(TileSheetV3::SubSheet &ss, int bpp) noexcept {
+constexpr void repair(TileSheetV3::SubSheet &ss, int const bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 	ss.pixels.resize(bytes);
 	for (auto &s : ss.subsheets) {
@@ -265,7 +248,7 @@ constexpr bool valid(TileSheetV4 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet, ts.bpp);
 }
 
-constexpr void repair(TileSheetV4::SubSheet &ss, int bpp) noexcept {
+constexpr void repair(TileSheetV4::SubSheet &ss, int const 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);
@@ -367,7 +350,7 @@ constexpr bool valid(TileSheetV5 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet);
 }
 
-constexpr void repair(TileSheetV5::SubSheet &ss, int const bpp) noexcept {
+constexpr void repair(TileSheetV5::SubSheet &ss) noexcept {
 	if (ss.subsheets.empty()) {
 		auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile);
 		ss.pixels.resize(bytes);
@@ -377,7 +360,7 @@ constexpr void repair(TileSheetV5::SubSheet &ss, int const bpp) noexcept {
 		ss.rows = -1;
 	}
 	for (auto &s : ss.subsheets) {
-		repair(s, bpp);
+		repair(s);
 	}
 }
 
@@ -385,7 +368,7 @@ constexpr ox::Error repair(TileSheetV5 &ts) noexcept {
 	if (ts.bpp != 4 && ts.bpp != 8) {
 		return ox::Error{1, "Unable to repair TileSheet"};
 	}
-	repair(ts.subsheet, ts.bpp);
+	repair(ts.subsheet);
 	return {};
 }
 
@@ -443,23 +426,24 @@ ox::Error resizeSubsheet(TileSheet::SubSheet &ss, ox::Size const&sz) noexcept;
 [[nodiscard]]
 TileSheet::SubSheetIdx validateSubSheetIdx(TileSheet const&ts, TileSheet::SubSheetIdx idx) noexcept;
 
-[[nodiscard]]
-TileSheet::SubSheet const&getSubSheet(
-		ox::SpanView<uint32_t> const&idx,
-		std::size_t idxIt,
-		TileSheet::SubSheet const&pSubsheet) noexcept;
-
 [[nodiscard]]
 TileSheet::SubSheet &getSubSheet(
 		ox::SpanView<uint32_t> const&idx,
 		std::size_t idxIt,
 		TileSheet::SubSheet &pSubsheet) noexcept;
 
+#if defined(__GNUC__) && __GNUC__ >= 13
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-reference"
+#endif
 [[nodiscard]]
 TileSheet::SubSheet const&getSubSheet(TileSheet const&ts, ox::SpanView<uint32_t> const &idx) noexcept;
 
 [[nodiscard]]
 TileSheet::SubSheet &getSubSheet(TileSheet &ts, ox::SpanView<uint32_t> const &idx) noexcept;
+#if defined(__GNUC__) && __GNUC__ >= 13
+#pragma GCC diagnostic pop
+#endif
 
 ox::Error addSubSheet(TileSheet &ts, TileSheet::SubSheetIdx const &idx) noexcept;
 

src/nostalgia/modules/gfx/src/CMakeLists.txt

@@ -1,5 +1,5 @@
 add_library(
-	NostalgiaCore
+	NostalgiaGfx
 		gfx.cpp
 		tilesheet.cpp
 )
@@ -10,12 +10,12 @@ if(NOT BUILDCORE_TARGET STREQUAL "gba")
 endif()
 
 target_include_directories(
-	NostalgiaCore PUBLIC
+	NostalgiaGfx PUBLIC
 		../include
 )
 
 target_link_libraries(
-	NostalgiaCore PUBLIC
+	NostalgiaGfx PUBLIC
 		Turbine
 )
 
@@ -26,7 +26,7 @@ endif()
 
 install(
 	TARGETS
-		NostalgiaCore
+		NostalgiaGfx
 	DESTINATION
 		LIBRARY DESTINATION lib
 		ARCHIVE DESTINATION lib

src/nostalgia/modules/gfx/src/gba/CMakeLists.txt

@@ -1,15 +1,15 @@
 add_library(
-	NostalgiaCore-GBA OBJECT
+	NostalgiaGfx-GBA OBJECT
 		context.cpp
 		gfx.cpp
 		panic.cpp
 )
 target_include_directories(
-	NostalgiaCore-GBA PUBLIC
+	NostalgiaGfx-GBA PUBLIC
 		../../include
 )
 target_link_libraries(
-	NostalgiaCore-GBA PUBLIC
+	NostalgiaGfx-GBA PUBLIC
 		TeaGBA
 		Keel
 		Turbine
@@ -17,5 +17,5 @@ target_link_libraries(
 
 if(BUILDCORE_TARGET STREQUAL "gba")
 	set_source_files_properties(gfx.cpp PROPERTIES COMPILE_FLAGS -marm)
-	target_link_libraries(NostalgiaCore PUBLIC NostalgiaCore-GBA)
+	target_link_libraries(NostalgiaGfx PUBLIC NostalgiaGfx-GBA)
 endif()

src/nostalgia/modules/gfx/src/gba/panic.cpp

@@ -36,13 +36,13 @@ OX_ALLOW_UNSAFE_BUFFERS_END
 	setBgStatus(*ctx, 0, true);
 	clearBg(*ctx, 0);
 	auto const serr = ox::sfmt<ox::IString<23>>("Error code: {}", static_cast<int64_t>(err));
-	puts(*ctx, 32 + 1,  1, "SADNESS...");
-	puts(*ctx, 32 + 1,  4, "UNEXPECTED STATE:");
-	puts(*ctx, 32 + 2,  6, panicMsg);
+	consoleWrite(*ctx, 32 + 1,  1, "SADNESS...");
+	consoleWrite(*ctx, 32 + 1,  4, "UNEXPECTED STATE:");
+	consoleWrite(*ctx, 32 + 2,  6, panicMsg);
 	if (err) {
-		puts(*ctx, 32 + 2,  8, serr);
+		consoleWrite(*ctx, 32 + 2,  8, serr);
 	}
-	puts(*ctx, 32 + 1, 15, "PLEASE RESTART THE SYSTEM");
+	consoleWrite(*ctx, 32 + 1, 15, "PLEASE RESTART THE SYSTEM");
 	// print to terminal if in mGBA
 	oxErrf("\033[31;1;1mPANIC:\033[0m [{}:{}]: {}\n", file, line, panicMsg);
 	if (err.msg) {

src/nostalgia/modules/gfx/src/gfx.cpp

@@ -251,7 +251,7 @@ ox::Error initConsole(Context &ctx) noexcept {
 	return loadBgPalette(ctx, 0, PaletteAddr);
 }
 
-void puts(
+void consoleWrite(
 		Context &ctx,
 		int const column,
 		int const row,

src/nostalgia/modules/gfx/src/keel/CMakeLists.txt

@@ -1,18 +1,18 @@
 add_library(
-	NostalgiaCore-Keel
+	NostalgiaGfx-Keel
 		keelmodule.cpp
 		typeconv.cpp
 )
 
 target_link_libraries(
-	NostalgiaCore-Keel PUBLIC
+	NostalgiaGfx-Keel PUBLIC
 		Keel
-		NostalgiaCore
+		NostalgiaGfx
 )
 
 install(
 	TARGETS
-		NostalgiaCore-Keel
+		NostalgiaGfx-Keel
 	DESTINATION
 		LIBRARY DESTINATION lib
 		ARCHIVE DESTINATION lib

src/nostalgia/modules/gfx/src/keel/keelmodule.cpp

@@ -14,19 +14,6 @@
 namespace nostalgia::gfx {
 
 static class: public keel::Module {
-	private:
-		NostalgiaPaletteToPaletteV1Converter m_nostalgiaPaletteToPaletteV1Converter;
-		PaletteV1ToPaletteV2Converter m_paletteV1ToPaletteV2Converter;
-		PaletteV2ToPaletteV3Converter m_paletteV2ToPaletteV3Converter;
-		PaletteV3ToPaletteV4Converter m_paletteV3ToPaletteV4Converter;
-		PaletteV4ToPaletteV5Converter m_paletteV4ToPaletteV5Converter;
-		PaletteToCompactPaletteConverter m_paletteToCompactPaletteConverter;
-		TileSheetV1ToTileSheetV2Converter m_tileSheetV1ToTileSheetV2Converter;
-		TileSheetV2ToTileSheetV3Converter m_tileSheetV2ToTileSheetV3Converter;
-		TileSheetV3ToTileSheetV4Converter m_tileSheetV3ToTileSheetV4Converter;
-		TileSheetV4ToTileSheetV5Converter m_tileSheetV4ToTileSheetV5Converter;
-		TileSheetToCompactTileSheetConverter m_tileSheetToCompactTileSheetConverter;
-
 	public:
 		[[nodiscard]]
 		ox::String id() const noexcept override {
@@ -52,19 +39,19 @@ static class: public keel::Module {
 		}
 
 		[[nodiscard]]
-		ox::Vector<keel::BaseConverter const*> converters() const noexcept final {
+		ox::Vector<keel::Converter> converters() const noexcept final {
 			return {
-				&m_nostalgiaPaletteToPaletteV1Converter,
-				&m_paletteV1ToPaletteV2Converter,
-				&m_paletteV2ToPaletteV3Converter,
-				&m_paletteV3ToPaletteV4Converter,
-				&m_paletteV4ToPaletteV5Converter,
-				&m_paletteToCompactPaletteConverter,
-				&m_tileSheetV1ToTileSheetV2Converter,
-				&m_tileSheetV2ToTileSheetV3Converter,
-				&m_tileSheetV3ToTileSheetV4Converter,
-				&m_tileSheetV4ToTileSheetV5Converter,
-				&m_tileSheetToCompactTileSheetConverter,
+				keel::Converter::make<convertNostalgiaPaletteToPaletteV1>(),
+				keel::Converter::make<convertPaletteV1ToPaletteV2>(),
+				keel::Converter::make<convertPaletteV2ToPaletteV3>(),
+				keel::Converter::make<convertPaletteV3ToPaletteV4>(),
+				keel::Converter::make<convertPaletteV4ToPaletteV5>(),
+				keel::Converter::make<convertPaletteToCompactPalette>(),
+				keel::Converter::make<convertTileSheetV1ToTileSheetV2>(),
+				keel::Converter::make<convertTileSheetV2ToTileSheetV3>(),
+				keel::Converter::make<convertTileSheetV3ToTileSheetV4>(),
+				keel::Converter::make<convertTileSheetV4ToTileSheetV5>(),
+				keel::Converter::make<convertTileSheetToCompactTileSheet>(),
 			};
 		}
 

src/nostalgia/modules/gfx/src/keel/typeconv.cpp

@@ -6,26 +6,26 @@
 
 namespace nostalgia::gfx {
 
-ox::Error NostalgiaPaletteToPaletteV1Converter::convert(
+ox::Error convertNostalgiaPaletteToPaletteV1(
 		keel::Context&,
 		NostalgiaPalette &src,
-		PaletteV1 &dst) const noexcept {
+		PaletteV1 &dst) noexcept {
 	dst.colors = std::move(src.colors);
 	return {};
 }
 
-ox::Error PaletteV1ToPaletteV2Converter::convert(
+ox::Error convertPaletteV1ToPaletteV2(
 		keel::Context&,
 		PaletteV1 &src,
-		PaletteV2 &dst) const noexcept {
+		PaletteV2 &dst) noexcept {
 	dst.pages.emplace_back(std::move(src.colors));
 	return {};
 }
 
-ox::Error PaletteV2ToPaletteV3Converter::convert(
+ox::Error convertPaletteV2ToPaletteV3(
 		keel::Context&,
 		PaletteV2 &src,
-		PaletteV3 &dst) const noexcept {
+		PaletteV3 &dst) noexcept {
 	dst.pages = std::move(src.pages);
 	if (!dst.pages.empty()) {
 		dst.colorInfo.reserve(dst.pages[0].size());
@@ -36,10 +36,10 @@ ox::Error PaletteV2ToPaletteV3Converter::convert(
 	return {};
 }
 
-ox::Error PaletteV3ToPaletteV4Converter::convert(
+ox::Error convertPaletteV3ToPaletteV4(
 		keel::Context&,
 		PaletteV3 &src,
-		PaletteV4 &dst) const noexcept {
+		PaletteV4 &dst) noexcept {
 	dst.pages.reserve(src.pages.size());
 	for (auto i = 1; auto &page : src.pages) {
 		dst.pages.emplace_back(ox::sfmt("Page {}", i), std::move(page));
@@ -52,10 +52,10 @@ ox::Error PaletteV3ToPaletteV4Converter::convert(
 	return {};
 }
 
-ox::Error PaletteV4ToPaletteV5Converter::convert(
+ox::Error convertPaletteV4ToPaletteV5(
 		keel::Context&,
 		PaletteV4 &src,
-		PaletteV5 &dst) const noexcept {
+		PaletteV5 &dst) noexcept {
 	dst.colorNames = std::move(src.colorNames);
 	dst.pages.reserve(src.pages.size());
 	for (auto &s : src.pages) {
@@ -72,10 +72,10 @@ ox::Error PaletteV4ToPaletteV5Converter::convert(
 	return {};
 }
 
-ox::Error PaletteToCompactPaletteConverter::convert(
+ox::Error convertPaletteToCompactPalette(
 		keel::Context&,
 		Palette &src,
-		CompactPalette &dst) const noexcept {
+		CompactPalette &dst) noexcept {
 	dst.pages.reserve(src.pages.size());
 	for (auto &page : src.pages) {
 		auto &p = dst.pages.emplace_back();
@@ -86,10 +86,10 @@ ox::Error PaletteToCompactPaletteConverter::convert(
 	return {};
 }
 
-ox::Error TileSheetV1ToTileSheetV2Converter::convert(
+ox::Error convertTileSheetV1ToTileSheetV2(
 		keel::Context&,
 		TileSheetV1 &src,
-		TileSheetV2 &dst) const noexcept {
+		TileSheetV2 &dst) noexcept {
 	dst.bpp              = src.bpp;
 	dst.defaultPalette   = std::move(src.defaultPalette);
 	dst.subsheet.name    = "Root";
@@ -99,7 +99,7 @@ ox::Error TileSheetV1ToTileSheetV2Converter::convert(
 	return {};
 }
 
-void TileSheetV2ToTileSheetV3Converter::convertSubsheet(
+static void convertSubsheet(
 		TileSheetV2::SubSheet &src,
 		TileSheetV3::SubSheet &dst,
 		SubSheetId &idIt) noexcept {
@@ -115,10 +115,10 @@ void TileSheetV2ToTileSheetV3Converter::convertSubsheet(
 	}
 }
 
-ox::Error TileSheetV2ToTileSheetV3Converter::convert(
+ox::Error convertTileSheetV2ToTileSheetV3(
 		keel::Context&,
 		TileSheetV2 &src,
-		TileSheetV3 &dst) const noexcept {
+		TileSheetV3 &dst) noexcept {
 	dst.bpp            = src.bpp;
 	dst.defaultPalette = std::move(src.defaultPalette);
 	convertSubsheet(src.subsheet, dst.subsheet, dst.idIt);
@@ -126,7 +126,7 @@ ox::Error TileSheetV2ToTileSheetV3Converter::convert(
 }
 
 
-void TileSheetV3ToTileSheetV4Converter::convertSubsheet(
+static void convertSubsheet(
 		TileSheetV3::SubSheet &src,
 		TileSheetV4::SubSheet &dst,
 		SubSheetId &idIt) noexcept {
@@ -142,10 +142,10 @@ void TileSheetV3ToTileSheetV4Converter::convertSubsheet(
 	}
 }
 
-ox::Error TileSheetV3ToTileSheetV4Converter::convert(
+ox::Error convertTileSheetV3ToTileSheetV4(
 		keel::Context&,
 		TileSheetV3 &src,
-		TileSheetV4 &dst) const noexcept {
+		TileSheetV4 &dst) noexcept {
 	dst.bpp            = src.bpp;
 	dst.idIt           = src.idIt;
 	dst.defaultPalette = std::move(src.defaultPalette);
@@ -154,7 +154,7 @@ ox::Error TileSheetV3ToTileSheetV4Converter::convert(
 }
 
 
-void TileSheetV4ToTileSheetV5Converter::convertSubsheet(
+static void convertSubsheet(
 		int const bpp,
 		TileSheetV4::SubSheet &src,
 		TileSheetV5::SubSheet &dst) noexcept {
@@ -179,10 +179,10 @@ void TileSheetV4ToTileSheetV5Converter::convertSubsheet(
 	}
 }
 
-ox::Error TileSheetV4ToTileSheetV5Converter::convert(
+ox::Error convertTileSheetV4ToTileSheetV5(
 		keel::Context&,
 		TileSheetV4 &src,
-		TileSheetV5 &dst) const noexcept {
+		TileSheetV5 &dst) noexcept {
 	dst.bpp  = src.bpp;
 	dst.idIt = src.idIt;
 	OX_RETURN_ERROR(src.defaultPalette.getPath().moveTo(dst.defaultPalette));
@@ -191,10 +191,10 @@ ox::Error TileSheetV4ToTileSheetV5Converter::convert(
 }
 
 
-ox::Error TileSheetToCompactTileSheetConverter::convert(
+ox::Error convertTileSheetToCompactTileSheet(
 		keel::Context&,
 		TileSheet &src,
-		CompactTileSheet &dst) const noexcept {
+		CompactTileSheet &dst) noexcept {
 	dst.bpp            = src.bpp;
 	dst.defaultPalette = ox::FileAddress{src.defaultPalette};
 	dst.pixels         = pixels(src);

src/nostalgia/modules/gfx/src/keel/typeconv.hpp

@@ -16,60 +16,26 @@ namespace nostalgia::gfx {
 
 // Type converters
 
-class NostalgiaPaletteToPaletteV1Converter: public keel::Converter<NostalgiaPalette, PaletteV1> {
-	ox::Error convert(keel::Context&, NostalgiaPalette &src, PaletteV1 &dst) const noexcept final;
-};
+ox::Error convertNostalgiaPaletteToPaletteV1(keel::Context&, NostalgiaPalette &src, PaletteV1 &dst) noexcept;
 
-class PaletteV1ToPaletteV2Converter: public keel::Converter<PaletteV1, PaletteV2> {
-	ox::Error convert(keel::Context&, PaletteV1 &src, PaletteV2 &dst) const noexcept final;
-};
+ox::Error convertPaletteV1ToPaletteV2(keel::Context&, PaletteV1 &src, PaletteV2 &dst) noexcept;
 
-class PaletteV2ToPaletteV3Converter: public keel::Converter<PaletteV2, PaletteV3> {
-	ox::Error convert(keel::Context&, PaletteV2 &src, PaletteV3 &dst) const noexcept final;
-};
+ox::Error convertPaletteV2ToPaletteV3(keel::Context&, PaletteV2 &src, PaletteV3 &dst) noexcept;
 
-class PaletteV3ToPaletteV4Converter: public keel::Converter<PaletteV3, PaletteV4> {
-	ox::Error convert(keel::Context&, PaletteV3 &src, PaletteV4 &dst) const noexcept final;
-};
+ox::Error convertPaletteV3ToPaletteV4(keel::Context&, PaletteV3 &src, PaletteV4 &dst) noexcept;
 
-class PaletteV4ToPaletteV5Converter: public keel::Converter<PaletteV4, PaletteV5> {
-	ox::Error convert(keel::Context&, PaletteV4 &src, PaletteV5 &dst) const noexcept final;
-};
+ox::Error convertPaletteV4ToPaletteV5(keel::Context&, PaletteV4 &src, PaletteV5 &dst) noexcept;
 
-class PaletteToCompactPaletteConverter: public keel::Converter<Palette, CompactPalette> {
-	ox::Error convert(keel::Context&, Palette &src, CompactPalette &dst) const noexcept final;
-};
+ox::Error convertPaletteToCompactPalette(keel::Context&, Palette &src, CompactPalette &dst) noexcept;
 
-class TileSheetV1ToTileSheetV2Converter: public keel::Converter<TileSheetV1, TileSheetV2> {
-	ox::Error convert(keel::Context&, TileSheetV1 &src, TileSheetV2 &dst) const noexcept final;
-};
+ox::Error convertTileSheetV1ToTileSheetV2(keel::Context&, TileSheetV1 &src, TileSheetV2 &dst) noexcept;
 
-class TileSheetV2ToTileSheetV3Converter: public keel::Converter<TileSheetV2, TileSheetV3> {
-	static void convertSubsheet(
-			TileSheetV2::SubSheet &src,
-			TileSheetV3::SubSheet &dst,
-			SubSheetId &idIt) noexcept;
-	ox::Error convert(keel::Context&, TileSheetV2 &src, TileSheetV3 &dst) const noexcept final;
-};
+ox::Error convertTileSheetV2ToTileSheetV3(keel::Context&, TileSheetV2 &src, TileSheetV3 &dst) noexcept;
 
-class TileSheetV3ToTileSheetV4Converter: public keel::Converter<TileSheetV3, TileSheetV4> {
-	static void convertSubsheet(
-			TileSheetV3::SubSheet &src,
-			TileSheetV4::SubSheet &dst,
-			SubSheetId &idIt) noexcept;
-	ox::Error convert(keel::Context&, TileSheetV3 &src, TileSheetV4 &dst) const noexcept final;
-};
+ox::Error convertTileSheetV3ToTileSheetV4(keel::Context&, TileSheetV3 &src, TileSheetV4 &dst) noexcept;
 
-class TileSheetV4ToTileSheetV5Converter final: public keel::Converter<TileSheetV4, TileSheetV5> {
-	static void convertSubsheet(
-			int bpp,
-			TileSheetV4::SubSheet &src,
-			TileSheetV5::SubSheet &dst) noexcept;
-	ox::Error convert(keel::Context&, TileSheetV4 &src, TileSheetV5 &dst) const noexcept override;
-};
+ox::Error convertTileSheetV4ToTileSheetV5(keel::Context&, TileSheetV4 &src, TileSheetV5 &dst) noexcept;
 
-class TileSheetToCompactTileSheetConverter: public keel::Converter<TileSheet, CompactTileSheet> {
-	ox::Error convert(keel::Context&, TileSheet &src, CompactTileSheet &dst) const noexcept final;
-};
+ox::Error convertTileSheetToCompactTileSheet(keel::Context&, TileSheet &src, CompactTileSheet &dst) noexcept;
 
 }

src/nostalgia/modules/gfx/src/opengl/CMakeLists.txt

@@ -1,9 +1,9 @@
 target_sources(
-	NostalgiaCore PRIVATE
+	NostalgiaGfx PRIVATE
 		context.cpp
 		gfx.cpp
 )
 target_link_libraries(
-	NostalgiaCore PUBLIC
+	NostalgiaGfx PUBLIC
 		GlUtils
 )

src/nostalgia/modules/gfx/src/opengl/gfx.cpp

@@ -449,7 +449,7 @@ static void setSprite(
 		++i;
 	};
 	if (!s.flipX) {
-		for (auto yIt = 0; yIt < static_cast<int>(dim.y); ++yIt) {
+		for (auto yIt = 0u; yIt < dim.y; ++yIt) {
 			for (auto xIt = 0u; xIt < dim.x; ++xIt) {
 				set(static_cast<int>(xIt), static_cast<int>(yIt), s.enabled);
 			}

src/nostalgia/modules/gfx/src/studio/CMakeLists.txt

@@ -1,25 +1,25 @@
-add_library(NostalgiaCore-Studio)
+add_library(NostalgiaGfx-Studio)
 
 add_library(
-	NostalgiaCore-Studio-ImGui
+	NostalgiaGfx-Studio-ImGui
 		studiomodule.cpp
 )
 
 target_link_libraries(
-	NostalgiaCore-Studio PUBLIC
-		NostalgiaCore
+	NostalgiaGfx-Studio PUBLIC
+		NostalgiaGfx
 		Studio
 )
 
 target_link_libraries(
-	NostalgiaCore-Studio-ImGui PUBLIC
-		NostalgiaCore-Studio
+	NostalgiaGfx-Studio-ImGui PUBLIC
+		NostalgiaGfx-Studio
 )
 
 install(
 	TARGETS
-		NostalgiaCore-Studio-ImGui
-		NostalgiaCore-Studio
+		NostalgiaGfx-Studio-ImGui
+		NostalgiaGfx-Studio
 	LIBRARY DESTINATION
 		${NOSTALGIA_DIST_MODULE}
 )

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

@@ -1,18 +1,6 @@
 target_sources(
-	NostalgiaCore-Studio PRIVATE
-		commands/addcolorcommand.cpp
-		commands/addpagecommand.cpp
-		commands/applycolorallpagescommand.cpp
-		commands/duplicatepagecommand.cpp
-		commands/movecolorcommand.cpp
-		commands/removecolorcommand.cpp
-		commands/removepagecommand.cpp
-		commands/renamepagecommand.cpp
-		commands/updatecolorcommand.cpp
-		commands/updatecolorinfocommand.cpp
-)
-
-target_sources(
-	NostalgiaCore-Studio-ImGui PRIVATE
+	NostalgiaGfx-Studio-ImGui PRIVATE
 		paletteeditor-imgui.cpp
 )
+
+add_subdirectory(commands)

src/nostalgia/modules/gfx/src/studio/paletteeditor/commands/CMakeLists.txt

@@ -0,0 +1,15 @@
+
+target_sources(
+    NostalgiaGfx-Studio PRIVATE
+        addcolorcommand.cpp
+        addpagecommand.cpp
+        applycolorallpagescommand.cpp
+        duplicatepagecommand.cpp
+        movecolorcommand.cpp
+        movepagecommand.cpp
+        removecolorcommand.cpp
+        removepagecommand.cpp
+        renamepagecommand.cpp
+        updatecolorcommand.cpp
+        updatecolorinfocommand.cpp
+)

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

@@ -12,6 +12,7 @@ enum class PaletteEditorCommandId {
 	AddPage,
 	DuplicatePage,
 	RemovePage,
+	MovePage,
 	AddColor,
 	RemoveColor,
 	UpdateColorInfo,

src/nostalgia/modules/gfx/src/studio/paletteeditor/commands/movepagecommand.cpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#include "commands.hpp"
+
+#include "movepagecommand.hpp"
+
+namespace nostalgia::gfx {
+
+MovePageCommand::MovePageCommand(
+		Palette &pal,
+		size_t const srcIdx,
+		size_t const dstIdx) noexcept:
+	m_pal(pal),
+	m_srcIdx(srcIdx),
+	m_dstIdx(dstIdx) {}
+
+int MovePageCommand::commandId() const noexcept {
+	return static_cast<int>(PaletteEditorCommandId::MovePage);
+}
+
+ox::Error MovePageCommand::redo() noexcept {
+	movePage(m_srcIdx, m_dstIdx);
+	return {};
+}
+
+ox::Error MovePageCommand::undo() noexcept {
+	movePage(m_dstIdx, m_srcIdx);
+	return {};
+}
+
+void MovePageCommand::movePage(
+		size_t const srcIdx, size_t const dstIdx) noexcept {
+	auto page = std::move(m_pal.pages[srcIdx]);
+	std::ignore = m_pal.pages.erase(srcIdx);
+	m_pal.pages.emplace(dstIdx, std::move(page));
+}
+
+}

src/nostalgia/modules/gfx/src/studio/paletteeditor/commands/movepagecommand.hpp

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include <studio/studio.hpp>
+
+#include <nostalgia/gfx/palette.hpp>
+
+namespace nostalgia::gfx {
+
+class MovePageCommand: public studio::UndoCommand {
+	private:
+		Palette &m_pal;
+		std::size_t const m_srcIdx = 0;
+		std::size_t const m_dstIdx = 0;
+
+	public:
+		MovePageCommand(Palette &pal, size_t srcIdx, size_t dstIdx) noexcept;
+
+		~MovePageCommand() noexcept override = default;
+
+		[[nodiscard]]
+		int commandId() const noexcept override;
+
+		ox::Error redo() noexcept override;
+
+		ox::Error undo() noexcept override;
+
+	private:
+		void movePage(size_t srcIdx, size_t dstIdx) noexcept;
+};
+
+}

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

@@ -11,6 +11,7 @@
 #include "commands/applycolorallpagescommand.hpp"
 #include "commands/duplicatepagecommand.hpp"
 #include "commands/movecolorcommand.hpp"
+#include "commands/movepagecommand.hpp"
 #include "commands/removecolorcommand.hpp"
 #include "commands/removepagecommand.hpp"
 #include "commands/renamepagecommand.hpp"
@@ -19,6 +20,7 @@
 
 #include "paletteeditor-imgui.hpp"
 
+
 namespace nostalgia::gfx {
 
 namespace ig = studio::ig;
@@ -33,27 +35,40 @@ OX_MODEL_BEGIN(ColorDragDrop)
 	OX_MODEL_FIELD(i)
 OX_MODEL_END()
 
+struct PageDragDrop {
+	static constexpr auto TypeName = "nostalgia.gfx.PageDragDrop";
+	static constexpr auto TypeVersion = 1;
+	uint32_t page{};
+};
+
+OX_MODEL_BEGIN(PageDragDrop)
+	OX_MODEL_FIELD(page)
+OX_MODEL_END()
+
 void PaletteEditorImGui::PageRenameDialog::draw(turbine::Context &tctx) noexcept {
 	if (!m_show) {
 		return;
 	}
 	if (ig::BeginPopup(tctx, "Rename Page", m_show)) {
+		if (ImGui::IsWindowAppearing()) {
+			ImGui::SetKeyboardFocusHere();
+		}
 		ig::InputText("Name", m_name);
-		switch (ig::PopupControlsOkCancel(m_show)) {
-			case ig::PopupResponse::OK:
+		auto const nameInputFocused = ImGui::IsItemFocused();
+		auto const resp = ig::PopupControlsOkCancel(m_show);
+		if ((nameInputFocused && ImGui::IsKeyPressed(ImGuiKey_Enter))
+			|| resp == ig::PopupResponse::OK) {
 			inputSubmitted.emit(m_name);
-				[[fallthrough]];
-			case ig::PopupResponse::Cancel:
 			close();
-			default:
-				break;
+		} else if (resp == ig::PopupResponse::Cancel) {
+			close();
 		}
 		ImGui::EndPopup();
 	}
 }
 
 
-PaletteEditorImGui::PaletteEditorImGui(studio::StudioContext &sctx, ox::StringParam path):
+PaletteEditorImGui::PaletteEditorImGui(studio::Context &sctx, ox::StringParam path):
 		Editor(sctx, std::move(path)),
 		m_sctx(sctx),
 		m_tctx(sctx.tctx),
@@ -62,7 +77,7 @@ PaletteEditorImGui::PaletteEditorImGui(studio::StudioContext &sctx, ox::StringPa
 	m_pageRenameDlg.inputSubmitted.connect(this, &PaletteEditorImGui::renamePage);
 }
 
-void PaletteEditorImGui::draw(studio::StudioContext&) noexcept {
+void PaletteEditorImGui::draw(studio::Context&) noexcept {
 	auto const paneSize = ImGui::GetContentRegionAvail();
 	{
 		ImGui::BeginChild("Pages", {280, paneSize.y}, true);
@@ -82,6 +97,27 @@ ox::Error PaletteEditorImGui::saveItem() noexcept {
 	return m_sctx.project->writeObj(itemPath(), m_pal, ox::ClawFormat::Organic);
 }
 
+void PaletteEditorImGui::navigateTo(ox::StringViewCR arg) noexcept {
+	auto const args = ox::split<2>(arg, ';');
+	if (args.size() < 2) {
+		return;
+	}
+	auto const &color = args[0];
+	auto const &page = args[1];
+	{
+		auto const [c, err] = strToInt(color);
+		if (!err && static_cast<size_t>(c) < colorCnt(m_pal)) {
+			m_selectedColorRow = static_cast<size_t>(c);
+		}
+	}
+	{
+		auto const [pg, err] = strToInt(page);
+		if (!err && static_cast<size_t>(pg) < m_pal.pages.size()) {
+			m_page = static_cast<size_t>(pg);
+		}
+	}
+}
+
 void PaletteEditorImGui::drawColumnLeftAlign(ox::CStringView txt) noexcept {
 	ImGui::TableNextColumn();
 	ImGui::Text("%s", txt.c_str());
@@ -98,7 +134,7 @@ void PaletteEditorImGui::numShortcuts(size_t &val, size_t const sizeRange) noexc
 	auto const lastElem = sizeRange - 1;
 	if (ImGui::IsKeyPressed(ImGuiKey_0)) {
 		val = ox::min<size_t>(9, lastElem);
-	} else for (auto i = 9u; i < 10; --i) {
+	} else for (auto i = 8u; i < 9; --i) {
 		auto const key = static_cast<ImGuiKey>(ImGuiKey_1 + i);
 		if (ImGui::IsKeyPressed(key)) {
 			val = ox::min<size_t>(i, lastElem);
@@ -235,6 +271,16 @@ void PaletteEditorImGui::drawPagesEditor() noexcept {
 			if (ImGui::Selectable("##PageRow", i == m_page, ImGuiSelectableFlags_SpanAllColumns)) {
 				m_page = i;
 			}
+			std::ignore = ig::dragDropSource([this, i] {
+				ImGui::Text("%s", m_pal.pages[i].name.c_str());
+				return ig::setDragDropPayload(PageDragDrop{i});
+			}, ImGuiDragDropFlags_SourceAllowNullID);
+			if (ig::DragDropTarget const d; d) {
+				auto const [src, err] = ig::getDragDropPayload<PageDragDrop>();
+				if (!err) {
+					std::ignore = pushCommand<MovePageCommand>(m_pal, src.page, i);
+				}
+			}
 		}
 	}
 	ImGui::EndTable();

src/nostalgia/modules/gfx/src/studio/paletteeditor/paletteeditor-imgui.hpp

@@ -31,27 +31,29 @@ class PaletteEditorImGui: public studio::Editor {
 				constexpr bool isOpen() const noexcept { return m_show; }
 				void draw(turbine::Context &tctx) noexcept;
 		} m_pageRenameDlg;
-		studio::StudioContext &m_sctx;
+		studio::Context &m_sctx;
 		turbine::Context &m_tctx;
 		Palette m_pal;
 		size_t m_selectedColorRow = 0;
 		size_t m_page = 0;
 
 	public:
-		PaletteEditorImGui(studio::StudioContext &sctx, ox::StringParam path);
+		PaletteEditorImGui(studio::Context &sctx, ox::StringParam path);
 
-		void draw(studio::StudioContext&) noexcept final;
+		void draw(studio::Context&) noexcept final;
 
 	protected:
 		ox::Error saveItem() noexcept final;
 
+		void navigateTo(ox::StringViewCR arg) noexcept override;
+
 	private:
 		static void drawColumnLeftAlign(ox::CStringView txt) noexcept;
 
 		static void drawColumn(ox::CStringView txt) noexcept;
 
 		static void drawColumn(ox::Integer_c auto i) noexcept {
-			drawColumn(ox::itoa(i));
+			drawColumn(ox::intToStr(i));
 		}
 
 		static void numShortcuts(size_t &val, size_t sizeRange) noexcept;

src/nostalgia/modules/gfx/src/studio/studiomodule.cpp

@@ -12,15 +12,15 @@
 namespace nostalgia::gfx {
 
 static class: public studio::Module {
-	ox::Vector<studio::EditorMaker> editors(studio::StudioContext &ctx) const noexcept final {
+	ox::Vector<studio::EditorMaker> editors(studio::Context &ctx) const noexcept final {
 		return {
 			studio::editorMaker<TileSheetEditorImGui>(ctx, {FileExt_ng, FileExt_nts}),
 			studio::editorMaker<PaletteEditorImGui>(ctx, FileExt_npal),
 		};
 	}
 
-	ox::Vector<ox::UPtr<studio::ItemMaker>> itemMakers(studio::StudioContext&) const noexcept final {
-		ox::Vector<ox::UniquePtr<studio::ItemMaker>> out;
+	ox::Vector<ox::UPtr<studio::ItemMaker>> itemMakers(studio::Context&) const noexcept final {
+		ox::Vector<ox::UPtr<studio::ItemMaker>> out;
 		out.emplace_back(ox::make<studio::ItemMakerT<TileSheet>>("Tile Sheet", "TileSheets", FileExt_nts));
 		out.emplace_back(ox::make<studio::ItemMakerT<Palette>>("Palette", "Palettes", FileExt_npal, Palette{
 			.colorNames = {},

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/CMakeLists.txt

@@ -1,5 +1,5 @@
 target_sources(
-	NostalgiaCore-Studio PRIVATE
+	NostalgiaGfx-Studio PRIVATE
 		tilesheeteditorview.cpp
 		tilesheeteditormodel.cpp
 		tilesheetpixelgrid.cpp
@@ -7,12 +7,12 @@ target_sources(
 )
 
 target_sources(
-	NostalgiaCore-Studio-ImGui PRIVATE
+	NostalgiaGfx-Studio-ImGui PRIVATE
 		tilesheeteditor-imgui.cpp
 )
 
 target_link_libraries(
-	NostalgiaCore-Studio-ImGui PUBLIC
+	NostalgiaGfx-Studio-ImGui PUBLIC
 		lodepng
 )
 

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/CMakeLists.txt

@@ -1,5 +1,5 @@
 target_sources(
-	NostalgiaCore-Studio PRIVATE
+	NostalgiaGfx-Studio PRIVATE
 		addsubsheetcommand.cpp
 		cutpastecommand.cpp
 		deletetilescommand.cpp
@@ -9,5 +9,6 @@ target_sources(
 		inserttilescommand.cpp
 		palettechangecommand.cpp
 		rmsubsheetcommand.cpp
+		rotatecommand.cpp
 		updatesubsheetcommand.cpp
 )

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/commands.hpp

@@ -17,6 +17,7 @@ enum class CommandId {
 	DeleteTile,
 	FlipX,
 	FlipY,
+	Rotate,
 	InsertTile,
 	MoveSubSheet,
 	UpdateSubSheet,

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/cutpastecommand.cpp

@@ -27,11 +27,14 @@ CutPasteCommand::CutPasteCommand(
 		TileSheet::SubSheetIdx subSheetIdx,
 		ox::Point const&dstStart,
 		ox::Point dstEnd,
-		TileSheetClipboard const&cb) noexcept:
+		TileSheetClipboard const&cb):
 		m_commandId(commandId),
 		m_img(img),
 		m_subSheetIdx(std::move(subSheetIdx)) {
 	auto const&ss = getSubSheet(m_img, m_subSheetIdx);
+	if (dstStart.x >= ss.columns * TileWidth || dstStart.y >= ss.rows * TileHeight) {
+		throw ox::Exception{1, "paste starts beyond the bounds of target"};
+	}
 	dstEnd.x = std::min(ss.columns * TileWidth - 1, dstEnd.x);
 	dstEnd.y = std::min(ss.rows * TileHeight - 1, dstEnd.y);
 	for (auto const&p : cb.pixels()) {

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/cutpastecommand.hpp

@@ -69,7 +69,7 @@ class CutPasteCommand: public TileSheetCommand {
 				TileSheet::SubSheetIdx subSheetIdx,
 				ox::Point const&dstStart,
 				ox::Point dstEnd,
-				TileSheetClipboard const&cb) noexcept;
+				TileSheetClipboard const&cb);
 
 		ox::Error redo() noexcept final;
 

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/deletetilescommand.cpp

@@ -8,14 +8,14 @@
 
 namespace nostalgia::gfx {
 
-gfx::DeleteTilesCommand::DeleteTilesCommand(
+DeleteTilesCommand::DeleteTilesCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx idx,
-		std::size_t tileIdx,
-		std::size_t tileCnt) noexcept:
+		std::size_t const tileIdx,
+		std::size_t const tileCnt) noexcept:
 		m_img(img),
 		m_idx(std::move(idx)) {
-	const unsigned bytesPerTile = m_img.bpp == 4 ? PixelsPerTile / 2 : PixelsPerTile;
+	constexpr unsigned bytesPerTile = PixelsPerTile;
 	m_deletePos = tileIdx * bytesPerTile;
 	m_deleteSz = tileCnt * bytesPerTile;
 	m_deletedPixels.resize(m_deleteSz);
@@ -28,15 +28,21 @@ gfx::DeleteTilesCommand::DeleteTilesCommand(
 	}
 }
 
-ox::Error gfx::DeleteTilesCommand::redo() noexcept {
+ox::Error DeleteTilesCommand::redo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
-	auto srcPos = m_deletePos + m_deleteSz;
-	auto const src = &p[srcPos];
+	auto const srcPos = m_deletePos + m_deleteSz;
 	auto const dst1 = &p[m_deletePos];
 	auto const dst2 = &p[(p.size() - m_deleteSz)];
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
+	if (srcPos < p.size()) {
+		auto const src = &p[srcPos];
 		ox::memmove(dst1, src, p.size() - srcPos);
 		ox::memset(dst2, 0, m_deleteSz * sizeof(decltype(p[0])));
+	} else {
+		ox::memset(dst1, 0, p.size() - m_deletePos);
+	}
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	return {};
 }
 
@@ -44,11 +50,16 @@ ox::Error DeleteTilesCommand::undo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
 	auto const src = &p[m_deletePos];
-	auto const dst1 = &p[m_deletePos + m_deleteSz];
-	auto const dst2 = src;
 	auto const sz = p.size() - m_deletePos - m_deleteSz;
+	auto const srcPos = m_deletePos + m_deleteSz;
+	OX_ALLOW_UNSAFE_BUFFERS_BEGIN
+	if (srcPos < p.size()) {
+		auto const dst1 = &p[m_deletePos + m_deleteSz];
 		ox::memmove(dst1, src, sz);
+	}
+	auto const dst2 = src;
 	ox::memcpy(dst2, m_deletedPixels.data(), m_deletedPixels.size());
+	OX_ALLOW_UNSAFE_BUFFERS_END
 	return {};
 }
 

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/drawcommand.cpp

@@ -2,15 +2,68 @@
  * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
  */
 
+#include <cmath>
+
 #include "drawcommand.hpp"
 
 namespace nostalgia::gfx {
 
+constexpr void iterateLine(ox::Point const &a, ox::Point const &b, auto const &f) noexcept {
+	auto const rise = b.y - a.y;
+	auto const run = b.x - a.x;
+	auto const slope = static_cast<double>(rise) / static_cast<double>(run);
+	auto y = static_cast<double>(a.y);
+	auto const w = abs(run);
+	if (rise > 0) {
+		if (run > 0) {
+			auto constexpr xmod = 1;
+			for (int32_t i = 0; i < w; ++i) {
+				auto const climb = static_cast<int32_t>(ceil(y + slope - y));
+				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
+				y += slope * xmod;
+			}
+		} else if (run < 0) {
+			auto constexpr xmod = -1;
+			for (int32_t i = 0; i < w; ++i) {
+				auto const climb = static_cast<int32_t>(floor(y + slope - y));
+				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
+				y += slope * xmod;
+			}
+		} else {
+			f(a.x, a.y, rise);
+		}
+	} else if (rise < 0) {
+		if (run > 0) {
+			auto constexpr xmod = 1;
+			for (int32_t i = 0; i < w; ++i) {
+				auto const climb = static_cast<int32_t>(floor(y + slope - y));
+				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
+				y += slope * xmod;
+			}
+		} else if (run < 0) {
+			auto constexpr xmod = -1;
+			for (int32_t i = 0; i < w; ++i) {
+				auto const climb = static_cast<int32_t>(ceil(y + slope - y));
+				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
+				y += slope * xmod;
+			}
+		} else {
+			f(a.x, a.y, rise - 1);
+		}
+	} else {
+		auto const xmod = run > 0 ? 1 : -1;
+		for (int32_t i = 0; i < w; ++i) {
+			f(a.x + i * xmod, static_cast<int32_t>(y), 1);
+		}
+	}
+}
+
+
 DrawCommand::DrawCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx subSheetIdx,
 		std::size_t idx,
-		int palIdx) noexcept:
+		int const palIdx) noexcept:
 		m_img(img),
 		m_subSheetIdx(std::move(subSheetIdx)),
 		m_palIdx(palIdx) {
@@ -21,8 +74,8 @@ DrawCommand::DrawCommand(
 DrawCommand::DrawCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx subSheetIdx,
-		ox::Vector<std::size_t> const&idxList,
-		int palIdx) noexcept:
+		ox::SpanView<std::size_t> const&idxList,
+		int const palIdx) noexcept:
 		m_img(img),
 		m_subSheetIdx(std::move(subSheetIdx)),
 		m_palIdx(palIdx) {
@@ -32,11 +85,12 @@ DrawCommand::DrawCommand(
 	}
 }
 
-bool DrawCommand::append(std::size_t idx) noexcept {
+bool DrawCommand::append(std::size_t const idx) noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	if (m_changes.back().value->idx != idx && getPixel(subsheet, idx) != m_palIdx) {
 		// duplicate entries are bad
-		auto existing = ox::find_if(m_changes.cbegin(), m_changes.cend(), [idx](auto const&c) {
+		auto existing = find_if(
+			m_changes.cbegin(), m_changes.cend(), [idx](auto const&c) {
 			return c.idx == idx;
 		});
 		if (existing == m_changes.cend()) {
@@ -48,7 +102,7 @@ bool DrawCommand::append(std::size_t idx) noexcept {
 	return false;
 }
 
-bool DrawCommand::append(ox::Vector<std::size_t> const&idxList) noexcept {
+bool DrawCommand::append(ox::SpanView<std::size_t> const&idxList) noexcept {
 	auto out = false;
 	for (auto idx : idxList) {
 		out = append(idx) || out;
@@ -56,6 +110,28 @@ bool DrawCommand::append(ox::Vector<std::size_t> const&idxList) noexcept {
 	return out;
 }
 
+void DrawCommand::lineUpdate(ox::Point a, ox::Point b) noexcept {
+	std::ignore = undo();
+	m_changes.clear();
+	auto &ss = getSubSheet(m_img, m_subSheetIdx);
+	if (a.x < b.x) { ++b.x; }
+	if (a.y < b.y) { ++b.y; }
+	if (a.x > b.x) { --b.x; }
+	iterateLine(a, b, [this, &ss](int32_t const x, int32_t const y, int32_t const h) {
+		int const mod = h < 0 ? -1 : 1;
+		auto const range = h * mod;
+		for (int32_t i{}; i < range; ++i) {
+			auto const idx = ptToIdx(x, y + i * mod, ss.columns * TileWidth);
+			if (idx < ss.pixels.size()) {
+				if (m_palIdx != getPixel(ss, idx)) {
+					m_changes.emplace_back(static_cast<uint32_t>(idx), getPixel(ss, idx));
+				}
+			}
+		}
+	});
+	std::ignore = redo();
+}
+
 ox::Error DrawCommand::redo() noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	for (auto const&c : m_changes) {
@@ -80,4 +156,8 @@ TileSheet::SubSheetIdx const&DrawCommand::subsheetIdx() const noexcept {
 	return m_subSheetIdx;
 }
 
+void DrawCommand::finish() noexcept {
+	setObsolete(m_changes.empty());
+}
+
 }

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/drawcommand.hpp

@@ -33,12 +33,14 @@ class DrawCommand: public TileSheetCommand {
 		DrawCommand(
 				TileSheet &img,
 				TileSheet::SubSheetIdx subSheetIdx,
-				ox::Vector<std::size_t> const&idxList,
+				ox::SpanView<std::size_t> const&idxList,
 				int palIdx) noexcept;
 
 		bool append(std::size_t idx) noexcept;
 
-		bool append(ox::Vector<std::size_t> const&idxList) noexcept;
+		bool append(ox::SpanView<std::size_t> const&idxList) noexcept;
+
+		void lineUpdate(ox::Point a, ox::Point b) noexcept;
 
 		ox::Error redo() noexcept final;
 
@@ -50,6 +52,8 @@ class DrawCommand: public TileSheetCommand {
 		[[nodiscard]]
 		TileSheet::SubSheetIdx const&subsheetIdx() const noexcept override;
 
+		void finish() noexcept;
+
 };
 
 }

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/inserttilescommand.cpp

@@ -9,28 +9,29 @@ namespace nostalgia::gfx {
 InsertTilesCommand::InsertTilesCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx idx,
-		std::size_t tileIdx,
-		std::size_t tileCnt) noexcept:
-		m_img(img),
-		m_idx(std::move(idx)) {
-	const unsigned bytesPerTile = m_img.bpp == 4 ? PixelsPerTile / 2 : PixelsPerTile;
-	m_insertPos = tileIdx * bytesPerTile;
-	m_insertCnt = tileCnt * bytesPerTile;
+		std::size_t const tileIdx,
+		std::size_t const tileCnt) noexcept:
+		m_img{img},
+		m_idx{std::move(idx)} {
+	m_insertPos = tileIdx * PixelsPerTile;
+	m_insertCnt = tileCnt * PixelsPerTile;
 	m_deletedPixels.resize(m_insertCnt);
 	// copy pixels to be erased
 	{
 		auto &s = getSubSheet(m_img, m_idx);
 		auto &p = s.pixels;
-		auto dst = m_deletedPixels.begin();
-		auto src = p.begin() + p.size() - m_insertCnt;
+		auto const dst = m_deletedPixels.begin();
+		auto const src = p.begin() + p.size() - m_insertCnt;
 		ox::copy_n(src, m_insertCnt, dst);
 	}
 }
 
+OX_ALLOW_UNSAFE_BUFFERS_BEGIN
+
 ox::Error InsertTilesCommand::redo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
-	auto dstPos = m_insertPos + m_insertCnt;
+	auto const dstPos = m_insertPos + m_insertCnt;
 	auto const src = &p[m_insertPos];
 	if (dstPos < p.size()) {
 		auto const dst = &p[dstPos];
@@ -55,6 +56,8 @@ ox::Error InsertTilesCommand::undo() noexcept {
 	return {};
 }
 
+OX_ALLOW_UNSAFE_BUFFERS_END
+
 int InsertTilesCommand::commandId() const noexcept {
 	return static_cast<int>(CommandId::InsertTile);
 }

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/palettechangecommand.cpp

@@ -6,14 +6,14 @@
 
 namespace nostalgia::gfx {
 
-gfx::PaletteChangeCommand::PaletteChangeCommand(
+PaletteChangeCommand::PaletteChangeCommand(
 		TileSheet::SubSheetIdx idx,
 		TileSheet &img,
 		ox::StringViewCR newPalette) noexcept:
-		m_img(img),
-		m_idx(std::move(idx)),
-		m_oldPalette(m_img.defaultPalette),
-		m_newPalette(ox::sfmt<ox::IString<43>>("uuid://{}", newPalette)) {
+		m_img{img},
+		m_idx{std::move(idx)},
+		m_oldPalette{m_img.defaultPalette},
+		m_newPalette{ox::sfmt<ox::IString<43>>("uuid://{}", newPalette)} {
 }
 
 ox::Error PaletteChangeCommand::redo() noexcept {

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rmsubsheetcommand.cpp

@@ -6,7 +6,7 @@
 
 namespace nostalgia::gfx {
 
-gfx::RmSubSheetCommand::RmSubSheetCommand(TileSheet &img, TileSheet::SubSheetIdx idx) noexcept:
+RmSubSheetCommand::RmSubSheetCommand(TileSheet &img, TileSheet::SubSheetIdx idx) noexcept:
 		m_img(img),
 		m_idx(std::move(idx)),
 		m_parentIdx(m_idx) {

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rotatecommand.cpp

@@ -0,0 +1,126 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#include "rotatecommand.hpp"
+
+namespace nostalgia::gfx {
+
+static void rotateLeft(
+		TileSheet::SubSheet &ss,
+        ox::Point const &pt,
+        ox::Point const &pt1,
+        ox::Point const &pt2,
+        int const depth = 0) noexcept {
+	if (depth >= 4) {
+		return;
+	}
+	auto const dstPt = ox::Point{pt1.x + pt.y, pt2.y - pt.x};
+	auto const srcIdx = ptToIdx(pt + pt1, ss.columns);
+	auto const dstIdx = ptToIdx(dstPt, ss.columns);
+	auto const src = ss.pixels[srcIdx];
+	auto &dst = ss.pixels[dstIdx];
+	rotateLeft(ss, dstPt - pt1, pt1, pt2, depth + 1);
+	dst = src;
+}
+
+static void rotateLeft(TileSheet::SubSheet &ss, ox::Point const &pt1, ox::Point const &pt2) noexcept {
+	auto const w = pt2.x - pt1.x;
+	auto const h = pt2.y - pt1.y;
+	for (int x = 0; x <= w / 2; ++x) {
+		for (int y = 0; y <= h / 2; ++y) {
+			rotateLeft(ss, {x, y}, pt1, pt2);
+		}
+	}
+}
+
+static void rotateRight(
+        TileSheet::SubSheet &ss,
+        ox::Point const &pt,
+        ox::Point const &pt1,
+        ox::Point const &pt2,
+        int const depth = 0) noexcept {
+	if (depth >= 4) {
+		return;
+	}
+	auto const dstPt = ox::Point{pt2.x - pt.y, pt1.y + pt.x};
+	auto const srcIdx = ptToIdx(pt + pt1, ss.columns);
+	auto const dstIdx = ptToIdx(dstPt, ss.columns);
+	auto const src = ss.pixels[srcIdx];
+	auto &dst = ss.pixels[dstIdx];
+	rotateRight(ss, dstPt - pt1, pt1, pt2, depth + 1);
+	dst = src;
+}
+
+static void rotateRight(TileSheet::SubSheet &ss, ox::Point const &pt1, ox::Point const &pt2) noexcept {
+	auto const w = pt2.x - pt1.x;
+	auto const h = pt2.y - pt1.y;
+	for (int x = 0; x <= w / 2; ++x) {
+		for (int y = 0; y <= h / 2; ++y) {
+			rotateRight(ss, {x, y}, pt1, pt2);
+		}
+	}
+}
+
+
+RotateCommand::RotateCommand(
+	TileSheet &img,
+	TileSheet::SubSheetIdx idx,
+	Direction const dir) noexcept:
+		m_img(img),
+		m_idx(std::move(idx)),
+		m_pt2{[this] {
+            auto &ss = getSubSheet(m_img, m_idx);
+			return ox::Point{ss.columns * TileWidth - 1, ss.rows * TileHeight - 1};
+		}()},
+		m_dir{dir} {
+}
+
+RotateCommand::RotateCommand(
+    TileSheet &img,
+    TileSheet::SubSheetIdx idx,
+    ox::Point const &pt1,
+    ox::Point const &pt2,
+	Direction const dir) noexcept:
+		m_img(img),
+		m_idx(std::move(idx)),
+		m_pt1{pt1},
+		m_pt2{pt2},
+		m_dir{dir} {
+}
+
+ox::Error RotateCommand::redo() noexcept {
+	auto &ss = getSubSheet(m_img, m_idx);
+	switch (m_dir) {
+		case Direction::Left:
+			rotateLeft(ss, m_pt1, m_pt2);
+			break;
+		case Direction::Right:
+			rotateRight(ss, m_pt1, m_pt2);
+			break;
+	}
+	return {};
+}
+
+ox::Error RotateCommand::undo() noexcept {
+	auto &ss = getSubSheet(m_img, m_idx);
+	switch (m_dir) {
+		case Direction::Left:
+			rotateRight(ss, m_pt1, m_pt2);
+			break;
+		case Direction::Right:
+			rotateLeft(ss, m_pt1, m_pt2);
+			break;
+	}
+	return {};
+}
+
+int RotateCommand::commandId() const noexcept {
+	return static_cast<int>(CommandId::Rotate);
+}
+
+TileSheet::SubSheetIdx const&RotateCommand::subsheetIdx() const noexcept {
+	return m_idx;
+}
+
+}

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rotatecommand.hpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include "commands.hpp"
+
+namespace nostalgia::gfx {
+
+class RotateCommand: public TileSheetCommand {
+	public:
+		enum class Direction {
+			Right,
+			Left,
+		};
+
+	private:
+		TileSheet &m_img;
+		TileSheet::SubSheetIdx m_idx;
+		ox::Point const m_pt1;
+		ox::Point const m_pt2;
+		Direction const m_dir;
+
+	public:
+		RotateCommand(TileSheet &img, TileSheet::SubSheetIdx idx, Direction dir) noexcept;
+
+		RotateCommand(
+			TileSheet &img,
+			TileSheet::SubSheetIdx idx,
+			ox::Point const &pt1,
+			ox::Point const &pt2,
+			Direction dir) noexcept;
+
+		ox::Error redo() noexcept final;
+
+		ox::Error undo() noexcept final;
+
+		[[nodiscard]]
+		int commandId() const noexcept final;
+
+		[[nodiscard]]
+		TileSheet::SubSheetIdx const&subsheetIdx() const noexcept override;
+
+};
+
+}

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

@@ -6,7 +6,7 @@
 
 namespace nostalgia::gfx {
 
-gfx::UpdateSubSheetCommand::UpdateSubSheetCommand(
+UpdateSubSheetCommand::UpdateSubSheetCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx idx,
 		ox::StringParam name,

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

@@ -36,22 +36,13 @@ OX_MODEL_BEGIN(TileSheetEditorConfig)
 OX_MODEL_END()
 
 static ox::Vector<uint32_t> normalizePixelSizes(
-		ox::Vector<uint8_t> const&inPixels,
-		int const bpp) noexcept {
-	uint_t const bytesPerTile = bpp == 8 ? PixelsPerTile : PixelsPerTile / 2;
+		ox::Vector<uint8_t> const&inPixels) noexcept {
 	ox::Vector<uint32_t> outPixels;
-	if (bytesPerTile == 64) { // 8 BPP
+	outPixels.reserve(inPixels.size());
 	outPixels.resize(inPixels.size());
 	for (std::size_t i = 0; i < inPixels.size(); ++i) {
 		outPixels[i] = inPixels[i];
 	}
-	} else { // 4 BPP
-		outPixels.resize(inPixels.size() * 2);
-		for (std::size_t i = 0; i < inPixels.size(); ++i) {
-			outPixels[i * 2 + 0] = inPixels[i] & 0xF;
-			outPixels[i * 2 + 1] = inPixels[i] >> 4;
-		}
-	}
 	return outPixels;
 }
 
@@ -96,7 +87,7 @@ static ox::Error toPngFile(
 					8)));
 }
 
-TileSheetEditorImGui::TileSheetEditorImGui(studio::StudioContext &sctx, ox::StringParam path):
+TileSheetEditorImGui::TileSheetEditorImGui(studio::Context &sctx, ox::StringParam path):
 		Editor(sctx, std::move(path)),
 		m_sctx{sctx},
 		m_tctx{m_sctx.tctx},
@@ -105,7 +96,7 @@ TileSheetEditorImGui::TileSheetEditorImGui(studio::StudioContext &sctx, ox::Stri
 		m_model{m_view.model()} {
 	// connect signal/slots
 	m_subsheetEditor.inputSubmitted.connect(this, &TileSheetEditorImGui::updateActiveSubsheet);
-	m_exportMenu.inputSubmitted.connect(this, &TileSheetEditorImGui::exportSubhseetToPng);
+	m_exportMenu.inputSubmitted.connect(this, &TileSheetEditorImGui::exportSubsheetToPng);
 	// load config
 	auto const&config = studio::readConfig<TileSheetEditorConfig>(
 			keelCtx(m_sctx), itemPath());
@@ -138,7 +129,7 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key const key, bool const do
 	if (!down) {
 		return;
 	}
-	if (key == turbine::Key::Escape) {
+	if (ig::mainWinHasFocus() && key == turbine::Key::Escape) {
 		m_subsheetEditor.close();
 		m_exportMenu.close();
 		m_palPicker.close();
@@ -152,6 +143,12 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key const key, bool const do
 			setCutEnabled(false);
 			setPasteEnabled(false);
 			m_model.clearSelection();
+		} else if (key == turbine::Key::Alpha_E) {
+			m_tool = TileSheetTool::Line;
+			setCopyEnabled(false);
+			setCutEnabled(false);
+			setPasteEnabled(false);
+			m_model.clearSelection();
 		} else if (key == turbine::Key::Alpha_S) {
 			m_tool = TileSheetTool::Select;
 			setCopyEnabled(true);
@@ -191,7 +188,7 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key const key, bool const do
 	}
 }
 
-void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
+void TileSheetEditorImGui::draw(studio::Context&) noexcept {
 	if (ig::mainWinHasFocus() && m_tool == TileSheetTool::Select) {
 		if (ImGui::IsKeyDown(ImGuiKey_ModCtrl) && !m_palPathFocused) {
 			if (ImGui::IsKeyPressed(ImGuiKey_A)) {
@@ -214,7 +211,7 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 	ImGui::BeginChild("Controls", {s_palViewWidth - 8, paneSize.y}, true);
 	{
 		auto const controlsSize = ImGui::GetContentRegionAvail();
-		ImGui::BeginChild("ToolBox", {s_palViewWidth - 24, 30}, true);
+		ImGui::BeginChild("ToolBox", {0, 32}, true);
 		{
 			auto const btnSz = ImVec2{45, 14};
 			if (ImGui::Selectable("Select", m_tool == TileSheetTool::Select, 0, btnSz)) {
@@ -230,18 +227,35 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 				m_tool = TileSheetTool::Fill;
 				m_model.clearSelection();
 			}
+			ImGui::SameLine();
+			if (ImGui::Selectable("Line", m_tool == TileSheetTool::Line, 0, btnSz)) {
+				m_tool = TileSheetTool::Line;
+				m_model.clearSelection();
+			}
+			//ImGui::SameLine();
+			//size_t i{};
+			//ig::ComboBox("##Operations", ox::Array<ox::CStringView, 1>{"Operations"}, i);
 		}
 		ImGui::EndChild();
-		ImGui::BeginChild("OperationsBox", {s_palViewWidth - 24, ig::BtnSz.y + 17}, true);
+		ImGui::BeginChild("OperationsBox", {0, 35}, ImGuiWindowFlags_NoTitleBar);
 		{
-			auto constexpr btnSz = ImVec2{55, ig::BtnSz.y};
-			if (ig::PushButton("Flip X", btnSz)) {
+			if (ImGui::BeginCombo("##Operations", "Operations", 0)) {
+				if (ImGui::Selectable("Flip X", false)) {
 					oxLogError(m_model.flipX());
 				}
-			ImGui::SameLine();
-			if (ig::PushButton("Flip Y", btnSz)) {
+				if (ImGui::Selectable("Flip Y", false)) {
 					oxLogError(m_model.flipY());
 				}
+				ImGui::BeginDisabled(!m_model.rotateEligible());
+				if (ImGui::Selectable("Rotate Left", false)) {
+					oxLogError(m_model.rotateLeft());
+				}
+				if (ImGui::Selectable("Rotate Right", false)) {
+					oxLogError(m_model.rotateRight());
+				}
+				ImGui::EndDisabled();
+				ImGui::EndCombo();
+			}
 		}
 		ImGui::EndChild();
 		auto const ySize = controlsSize.y - (38 + ig::BtnSz.y + 21);
@@ -383,15 +397,14 @@ void TileSheetEditorImGui::showSubsheetEditor() noexcept {
 	}
 }
 
-ox::Error TileSheetEditorImGui::exportSubhseetToPng(int const scale) const noexcept {
+ox::Error TileSheetEditorImGui::exportSubsheetToPng(int const scale) const noexcept {
 	OX_REQUIRE(path, studio::saveFile({{"PNG", "png"}}));
 	// subsheet to png
-	auto const&img = m_model.img();
 	auto const&s = m_model.activeSubSheet();
 	auto const&pal = m_model.pal();
 	auto const width = s.columns * TileWidth;
 	auto const height = s.rows * TileHeight;
-	auto pixels = normalizePixelSizes(s.pixels, img.bpp);
+	auto pixels = normalizePixelSizes(s.pixels);
 	pixels = normalizePixelArrangement(pixels, s.columns, scale);
 	auto const err = toPngFile(
 			path,
@@ -401,7 +414,7 @@ ox::Error TileSheetEditorImGui::exportSubhseetToPng(int const scale) const noexc
 			static_cast<unsigned>(width * scale),
 			static_cast<unsigned>(height * scale));
 	if (err) {
-		oxErrorf("Tilesheet export failed: {}", toStr(err));
+		oxErrorf("TileSheet export failed: {}", toStr(err));
 	}
 	return err;
 }
@@ -447,6 +460,9 @@ void TileSheetEditorImGui::drawTileSheet(ox::Vec2 const&fbSize) noexcept {
 				case TileSheetTool::Fill:
 					m_view.clickFill(fbSize, clickPos(winPos, mousePos));
 					break;
+				case TileSheetTool::Line:
+					m_view.clickLine(fbSize, clickPos(winPos, mousePos));
+					break;
 				case TileSheetTool::Select:
 					m_view.clickSelect(fbSize, clickPos(winPos, mousePos));
 					break;
@@ -533,15 +549,21 @@ void TileSheetEditorImGui::drawPaletteMenu() noexcept {
 					ImGui::PushID(static_cast<int>(i));
 					// Column: color idx
 					ImGui::TableNextColumn();
-					auto const label = ox::itoa(i + 1);
+					auto const label = ox::intToStr(i + 1);
 					auto const rowSelected = i == m_view.palIdx();
 					if (ImGui::Selectable(
 							label.c_str(), rowSelected, ImGuiSelectableFlags_SpanAllColumns)) {
 						m_view.setPalIdx(i);
 					}
+					if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(0)) {
+						studio::navigateTo(
+							m_sctx,
+							m_model.palPath(),
+							ox::sfmt("{};{}", i, m_model.palettePage()));
+					}
 					// Column: color RGB
 					ImGui::TableNextColumn();
-					auto ic = ImGui::GetColorU32(ImVec4(redf(c), greenf(c), bluef(c), 1));
+					auto const ic = ImGui::GetColorU32({redf(c), greenf(c), bluef(c), 1});
 					ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg, ic);
 					ImGui::TableNextColumn();
 					auto const&name =  i < pal.colorNames.size() ? pal.colorNames[i].c_str() : "";
@@ -620,7 +642,7 @@ void TileSheetEditorImGui::ExportMenu::draw(turbine::Context &tctx) noexcept {
 	constexpr auto popupSz = ImVec2{popupWidth, popupHeight};
 	if (ig::BeginPopup(tctx, popupName, m_show, popupSz)) {
 		ImGui::InputInt("Scale", &m_scale);
-		m_scale = ox::clamp(m_scale, 1, 50);
+		m_scale = ox::clamp(m_scale, 1, 135);
 		if (ig::PopupControlsOkCancel(popupWidth, m_show) == ig::PopupResponse::OK) {
 			inputSubmitted.emit(m_scale);
 		}

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.hpp

@@ -10,7 +10,6 @@
 #include <studio/editor.hpp>
 #include <studio/filepickerpopup.hpp>
 
-#include "tilesheetpixelgrid.hpp"
 #include "tilesheetpixels.hpp"
 #include "tilesheeteditorview.hpp"
 
@@ -45,8 +44,8 @@ class TileSheetEditorImGui: public studio::Editor {
 				[[nodiscard]]
 				constexpr bool isOpen() const noexcept { return m_show; }
 		};
-		static constexpr float s_palViewWidth = 300;
-		studio::StudioContext &m_sctx;
+		static constexpr float s_palViewWidth = 335;
+		studio::Context &m_sctx;
 		turbine::Context &m_tctx;
 		ox::Vector<ox::String> m_paletteList;
 		SubSheetEditor m_subsheetEditor;
@@ -61,7 +60,7 @@ class TileSheetEditorImGui: public studio::Editor {
 		ox::Vector<ox::UPtr<studio::UndoCommand>, 1> m_deferredCmds;
 
 	public:
-		TileSheetEditorImGui(studio::StudioContext &sctx, ox::StringParam path);
+		TileSheetEditorImGui(studio::Context &sctx, ox::StringParam path);
 
 		~TileSheetEditorImGui() override = default;
 
@@ -78,7 +77,7 @@ class TileSheetEditorImGui: public studio::Editor {
 
 		void keyStateChanged(turbine::Key key, bool down) override;
 
-		void draw(studio::StudioContext&) noexcept override;
+		void draw(studio::Context&) noexcept override;
 
 		void drawSubsheetSelector(TileSheet::SubSheet&, TileSheet::SubSheetIdx &path);
 
@@ -91,7 +90,7 @@ class TileSheetEditorImGui: public studio::Editor {
 	private:
 		void showSubsheetEditor() noexcept;
 
-		ox::Error exportSubhseetToPng(int scale) const noexcept;
+		ox::Error exportSubsheetToPng(int scale) const noexcept;
 
 		void drawTileSheet(ox::Vec2 const&fbSize) noexcept;
 
@@ -99,8 +98,6 @@ class TileSheetEditorImGui: public studio::Editor {
 
 		ox::Error updateActiveSubsheet(ox::StringView const&name, int cols, int rows) noexcept;
 
-	// slots
-	private:
 		void setActiveSubsheet(TileSheet::SubSheetIdx path) noexcept;
 
 };

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

@@ -18,13 +18,13 @@
 #include "commands/drawcommand.hpp"
 #include "commands/flipcommand.hpp"
 #include "commands/inserttilescommand.hpp"
+#include "commands/movesubsheetcommand.hpp"
 #include "commands/palettechangecommand.hpp"
 #include "commands/rmsubsheetcommand.hpp"
+#include "commands/rotatecommand.hpp"
 #include "commands/updatesubsheetcommand.hpp"
 #include "tilesheeteditormodel.hpp"
 
-#include "commands/movesubsheetcommand.hpp"
-
 namespace nostalgia::gfx {
 
 // delete pixels of all non-leaf nodes
@@ -45,14 +45,14 @@ Palette const TileSheetEditorModel::s_defaultPalette = {
 };
 
 TileSheetEditorModel::TileSheetEditorModel(
-		studio::StudioContext &sctx, ox::StringParam path, studio::UndoStack &undoStack):
-		m_sctx(sctx),
-		m_tctx(m_sctx.tctx),
-		m_path(std::move(path)),
-		m_img(*readObj<TileSheet>(keelCtx(m_tctx), m_path).unwrapThrow()),
+		studio::Context &sctx, ox::StringParam path, studio::UndoStack &undoStack):
+		m_sctx{sctx},
+		m_tctx{m_sctx.tctx},
+		m_path{std::move(path)},
+		m_img{*readObj<TileSheet>(keelCtx(m_tctx), m_path).unwrapThrow()},
 		// ignore failure to load palette
-		m_pal(readObj<Palette>(keelCtx(m_tctx), m_img.defaultPalette).value),
-		m_undoStack(undoStack) {
+		m_pal{readObj<Palette>(keelCtx(m_tctx), m_img.defaultPalette).value},
+		m_undoStack{undoStack} {
 	normalizeSubsheets(m_img.subsheet);
 	m_pal.updated.connect(this, &TileSheetEditorModel::markUpdated);
 	m_undoStack.changeTriggered.connect(this, &TileSheetEditorModel::markUpdatedCmdId);
@@ -67,19 +67,27 @@ void TileSheetEditorModel::cut() {
 	TileSheetClipboard blankCb;
 	auto cb = ox::make_unique<TileSheetClipboard>();
 	auto const&s = activeSubSheet();
-	iterateSelectionRows(*m_selection, [&](int const x, int const y) {
+	if (iterateSelectionRows(*m_selection, [&](int const x, int const y) {
 		auto pt = ox::Point{x, y};
 		auto const idx = gfx::idx(s, pt);
-		auto const c = getPixel(s, idx);
+		if (idx >= s.pixels.size()) {
+			return ox::Error{1, "invalid idx"};
+		}
+		auto const c = s.pixels[idx];
 		pt -= m_selection->a;
 		cb->addPixel(pt, c);
 		blankCb.addPixel(pt, 0);
-	});
+		return ox::Error{};
+	})) {
+		return;
+	}
 	auto const pt1 = m_selection->a;
 	auto const pt2 = ox::Point{s.columns * TileWidth, s.rows * TileHeight};
 	turbine::setClipboardObject(m_tctx, std::move(cb));
-	std::ignore = pushCommand(ox::make<CutPasteCommand>(
-		CommandId::Cut, m_img, m_activeSubsSheetIdx, pt1, pt2, blankCb));
+	if (auto const cmd = ox::makeCatch<CutPasteCommand>(
+		CommandId::Cut, m_img, m_activeSubsSheetIdx, pt1, pt2, blankCb); cmd.ok()) {
+		std::ignore = pushCommand(cmd.value);
+	}
 }
 
 void TileSheetEditorModel::copy() {
@@ -87,14 +95,20 @@ void TileSheetEditorModel::copy() {
 		return;
 	}
 	auto cb = ox::make_unique<TileSheetClipboard>();
-	iterateSelectionRows(*m_selection, [&](int const x, int const y) {
+	if (iterateSelectionRows(*m_selection, [&](int const x, int const y) {
 		auto pt = ox::Point{x, y};
 		auto const&s = activeSubSheet();
 		auto const idx = gfx::idx(s, pt);
-		auto const c = getPixel(s, idx);
+		if (idx >= s.pixels.size()) {
+			return ox::Error{1, "invalid idx"};
+		}
+		auto const c = s.pixels[idx];
 		pt -= m_selection->a;
 		cb->addPixel(pt, c);
-	});
+		return ox::Error{};
+	})) {
+		return;
+	}
 	turbine::setClipboardObject(m_tctx, std::move(cb));
 }
 
@@ -111,8 +125,10 @@ void TileSheetEditorModel::paste() {
 	auto const&s = activeSubSheet();
 	auto const pt1 = m_selection->a;
 	auto const pt2 = ox::Point{s.columns * TileWidth, s.rows * TileHeight};
-	std::ignore = pushCommand(ox::make<CutPasteCommand>(
-		CommandId::Paste, m_img, m_activeSubsSheetIdx, pt1, pt2, *cb));
+	if (auto const cmd = ox::makeCatch<CutPasteCommand>(
+		CommandId::Paste, m_img, m_activeSubsSheetIdx, pt1, pt2, *cb); cmd.ok()) {
+		std::ignore = pushCommand(cmd.value);
+	}
 }
 
 bool TileSheetEditorModel::acceptsClipboardPayload() const noexcept {
@@ -120,7 +136,7 @@ bool TileSheetEditorModel::acceptsClipboardPayload() const noexcept {
 	return cb.ok();
 }
 
-ox::StringView TileSheetEditorModel::palPath() const noexcept {
+ox::String const &TileSheetEditorModel::palPath() const & noexcept {
 	return m_palPath;
 }
 
@@ -141,22 +157,49 @@ size_t TileSheetEditorModel::palettePage() const noexcept {
 }
 
 void TileSheetEditorModel::drawCommand(ox::Point const &pt, std::size_t const palIdx) noexcept {
+	if (m_lastDrawUpdatePt == pt) {
+		return;
+	}
 	auto const &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
 	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
 		return;
 	}
+	m_lastDrawUpdatePt = pt;
 	auto const idx = gfx::idx(activeSubSheet, pt);
 	if (m_ongoingDrawCommand) {
 		m_updated = m_updated || m_ongoingDrawCommand->append(idx);
-	} else if (getPixel(activeSubSheet, idx) != palIdx) {
+	} else if (activeSubSheet.pixels[idx] != palIdx) {
 		std::ignore = pushCommand(ox::make<DrawCommand>(
 			m_img, m_activeSubsSheetIdx, idx, static_cast<int>(palIdx)));
 	}
 }
 
+void TileSheetEditorModel::drawLineCommand(ox::Point const &pt, std::size_t const palIdx) noexcept {
+	if (m_lastDrawUpdatePt == pt) {
+		return;
+	}
+	auto const &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
+	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
+		return;
+	}
+	m_lastDrawUpdatePt = pt;
+	auto const idx = gfx::idx(activeSubSheet, pt);
+	if (m_ongoingDrawCommand) {
+		m_ongoingDrawCommand->lineUpdate(m_lineStartPt, pt);
+		m_updated = true;
+	} else {
+		std::ignore = pushCommand(ox::make<DrawCommand>(
+			m_img, m_activeSubsSheetIdx, idx, static_cast<int>(palIdx)));
+		m_lineStartPt = pt;
+	}
+}
+
 void TileSheetEditorModel::endDrawCommand() noexcept {
+	if (m_ongoingDrawCommand) {
+		m_ongoingDrawCommand->finish();
 		m_ongoingDrawCommand = nullptr;
 	}
+}
 
 void TileSheetEditorModel::addSubsheet(TileSheet::SubSheetIdx const&parentIdx) noexcept {
 	std::ignore = pushCommand(ox::make<AddSubSheetCommand>(m_img, parentIdx));
@@ -186,6 +229,7 @@ ox::Error TileSheetEditorModel::updateSubsheet(
 void TileSheetEditorModel::setActiveSubsheet(TileSheet::SubSheetIdx const&idx) noexcept {
 	m_activeSubsSheetIdx = idx;
 	this->activeSubsheetChanged.emit(m_activeSubsSheetIdx);
+	clearSelection();
 }
 
 void TileSheetEditorModel::fill(ox::Point const&pt, int const palIdx) noexcept {
@@ -213,8 +257,36 @@ void TileSheetEditorModel::fill(ox::Point const&pt, int const palIdx) noexcept {
 	}
 }
 
+ox::Error TileSheetEditorModel::rotateLeft() noexcept {
+	auto &ss = activeSubSheet();
+    ox::Point pt1, pt2{ss.columns * TileWidth - 1, ss.rows * TileHeight - 1};
+	if (m_selection) {
+		pt1 = m_selection->a;
+		pt2 = m_selection->b;
+	}
+	return pushCommand(ox::make<RotateCommand>(
+		m_img, m_activeSubsSheetIdx, pt1, pt2, RotateCommand::Direction::Left));
+}
+
+ox::Error TileSheetEditorModel::rotateRight() noexcept {
+	auto &ss = activeSubSheet();
+    ox::Point pt1, pt2{ss.columns * TileWidth - 1, ss.rows * TileHeight - 1};
+	if (m_selection) {
+		pt1 = m_selection->a;
+		pt2 = m_selection->b;
+	}
+	return pushCommand(ox::make<RotateCommand>(
+		m_img, m_activeSubsSheetIdx, pt1, pt2, RotateCommand::Direction::Right));
+}
+
 void TileSheetEditorModel::setSelection(studio::Selection const&sel) noexcept {
+	auto const &ss = activeSubSheet();
+	if (sel.a.x < ss.columns * TileWidth && sel.a.y < ss.rows * TileHeight) {
 		m_selection.emplace(sel);
+	} else {
+		m_selTracker.finishSelection();
+		m_selection.reset();
+	}
 	m_updated = true;
 }
 
@@ -253,6 +325,7 @@ ox::Error TileSheetEditorModel::markUpdatedCmdId(studio::UndoCommand const*cmd)
 			m_pal = keel::AssetRef<Palette>{};
 		}
 		m_palettePage = ox::min<size_t>(pal().pages.size(), 0);
+		setPalPath();
 		paletteChanged.emit();
 	}
 	auto const tsCmd = dynamic_cast<TileSheetCommand const*>(cmd);
@@ -304,6 +377,16 @@ ox::Error TileSheetEditorModel::flipY() noexcept {
 	return pushCommand(ox::make<FlipYCommand>(m_img, m_activeSubsSheetIdx, a, b));
 }
 
+bool TileSheetEditorModel::rotateEligible() const noexcept {
+	if (m_selection) {
+		auto const w = m_selection->b.x - m_selection->a.x;
+		auto const h = m_selection->b.y - m_selection->a.y;
+		return w == h;
+	}
+	auto const &ss = activeSubSheet();
+	return ss.rows == ss.columns;
+}
+
 ox::Error TileSheetEditorModel::moveSubSheet(TileSheet::SubSheetIdx src, TileSheet::SubSheetIdx dst) noexcept {
 	return pushCommand(ox::make<MoveSubSheetCommand>(m_img, std::move(src), std::move(dst)));
 }
@@ -315,7 +398,7 @@ void TileSheetEditorModel::getFillPixels(
 		int const oldColor) const noexcept {
 	auto const idx = ptToIdx(pt, activeSubSheet.columns);
 	auto const relIdx = idx % PixelsPerTile;
-	if (pixels[relIdx] || getPixel(activeSubSheet, idx) != oldColor) {
+	if (pixels[relIdx] || activeSubSheet.pixels[idx] != oldColor) {
 		return;
 	}
 	// mark pixels to update
@@ -353,7 +436,7 @@ void TileSheetEditorModel::setPalPath() noexcept {
 }
 
 ox::Error TileSheetEditorModel::pushCommand(studio::UndoCommand *cmd) noexcept {
-	std::ignore = m_undoStack.push(ox::UPtr<studio::UndoCommand>{cmd});
+	std::ignore = m_undoStack.push(ox::UPtr{cmd});
 	m_ongoingDrawCommand = dynamic_cast<DrawCommand*>(cmd);
 	m_updated = true;
 	return {};

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

@@ -22,7 +22,7 @@ class TileSheetEditorModel: public ox::SignalHandler {
 
 	private:
 		static Palette const s_defaultPalette;
-		studio::StudioContext &m_sctx;
+		studio::Context &m_sctx;
 		turbine::Context &m_tctx;
 		ox::String m_path;
 		ox::String m_palPath;
@@ -34,10 +34,12 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		class DrawCommand *m_ongoingDrawCommand = nullptr;
 		studio::SelectionTracker m_selTracker;
 		ox::Optional<studio::Selection> m_selection;
+		ox::Point m_lineStartPt;
+		ox::Point m_lastDrawUpdatePt;
 		bool m_updated = false;
 
 	public:
-		TileSheetEditorModel(studio::StudioContext &sctx, ox::StringParam path, studio::UndoStack &undoStack);
+		TileSheetEditorModel(studio::Context &sctx, ox::StringParam path, studio::UndoStack &undoStack);
 
 		~TileSheetEditorModel() override = default;
 
@@ -60,7 +62,7 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		constexpr Palette const&pal() const noexcept;
 
 		[[nodiscard]]
-		ox::StringView palPath() const noexcept;
+		ox::String const &palPath() const & noexcept;
 
 		ox::Error setPalette(ox::StringViewCR path) noexcept;
 
@@ -71,6 +73,8 @@ class TileSheetEditorModel: public ox::SignalHandler {
 
 		void drawCommand(ox::Point const&pt, std::size_t palIdx) noexcept;
 
+		void drawLineCommand(ox::Point const&pt, std::size_t palIdx) noexcept;
+
 		void endDrawCommand() noexcept;
 
 		void addSubsheet(TileSheet::SubSheetIdx const&parentIdx) noexcept;
@@ -102,6 +106,10 @@ class TileSheetEditorModel: public ox::SignalHandler {
 
 		void fill(ox::Point const&pt, int palIdx) noexcept;
 
+		ox::Error rotateLeft() noexcept;
+
+		ox::Error rotateRight() noexcept;
+
 		void setSelection(studio::Selection const&sel) noexcept;
 
 		void select(ox::Point const&pt) noexcept;
@@ -130,6 +138,9 @@ class TileSheetEditorModel: public ox::SignalHandler {
 
 		ox::Error flipY() noexcept;
 
+		[[nodiscard]]
+		bool rotateEligible() const noexcept;
+
 		ox::Error moveSubSheet(TileSheet::SubSheetIdx src, TileSheet::SubSheetIdx dst) noexcept;
 
 	private:

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditorview.cpp

@@ -11,7 +11,8 @@
 
 namespace nostalgia::gfx {
 
-TileSheetEditorView::TileSheetEditorView(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack):
+TileSheetEditorView::TileSheetEditorView(
+		studio::Context &sctx, ox::StringViewCR path, studio::UndoStack &undoStack):
 	m_model(sctx, path, undoStack),
 	m_pixelsDrawer(m_model) {
 	glBindVertexArray(0);
@@ -76,6 +77,11 @@ void TileSheetEditorView::clickDraw(ox::Vec2 const&paneSize, ox::Vec2 const&clic
 	m_model.drawCommand(pt, m_palIdx);
 }
 
+void TileSheetEditorView::clickLine(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept {
+	auto const pt = clickPoint(paneSize, clickPos);
+	m_model.drawLineCommand(pt, m_palIdx);
+}
+
 void TileSheetEditorView::clickSelect(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept {
 	auto const pt = clickPoint(paneSize, clickPos);
 	m_model.select(pt);
@@ -90,6 +96,7 @@ void TileSheetEditorView::releaseMouseButton(TileSheetTool tool) noexcept {
 	switch (tool) {
 		case TileSheetTool::Draw:
 		case TileSheetTool::Fill:
+		case TileSheetTool::Line:
 			m_model.endDrawCommand();
 			break;
 		case TileSheetTool::Select:

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditorview.hpp

@@ -23,6 +23,7 @@ enum class TileSheetTool {
 	Select,
 	Draw,
 	Fill,
+	Line,
 };
 
 [[nodiscard]]
@@ -34,6 +35,8 @@ constexpr auto toString(TileSheetTool t) noexcept {
 			return "Draw";
 		case TileSheetTool::Fill:
 			return "Fill";
+		case TileSheetTool::Line:
+			return "Line";
 		case TileSheetTool::None:
 			return "None";
 	}
@@ -53,7 +56,7 @@ class TileSheetEditorView: public ox::SignalHandler {
 		std::size_t m_palIdx = 0;
 
 	public:
-		TileSheetEditorView(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack);
+		TileSheetEditorView(studio::Context &sctx, ox::StringViewCR path, studio::UndoStack &undoStack);
 
 		~TileSheetEditorView() override = default;
 
@@ -65,6 +68,8 @@ class TileSheetEditorView: public ox::SignalHandler {
 
 		void clickDraw(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;
 
+		void clickLine(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;
+
 		void clickSelect(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;
 
 		void clickFill(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheetpixelgrid.cpp

@@ -5,12 +5,13 @@
 #include <ox/claw/write.hpp>
 
 #include <nostalgia/gfx/consts.hpp>
+#include <nostalgia/gfx/gfx.hpp>
 
 #include "tilesheetpixelgrid.hpp"
 
 namespace nostalgia::gfx {
 
-void TileSheetGrid::setPixelSizeMod(float sm) noexcept {
+void TileSheetGrid::setPixelSizeMod(float const sm) noexcept {
 	m_pixelSizeMod = sm;
 }
 
@@ -18,11 +19,17 @@ ox::Error TileSheetGrid::buildShader() noexcept {
 	auto const pixelLineVshad = ox::sfmt(VShad, gl::GlslVersion);
 	auto const pixelLineFshad = ox::sfmt(FShad, gl::GlslVersion);
 	auto const pixelLineGshad = ox::sfmt(GShad, gl::GlslVersion);
-	return glutils::buildShaderProgram(pixelLineVshad, pixelLineFshad, pixelLineGshad).moveTo(m_shader);
+	return glutils::buildShaderProgram(
+		pixelLineVshad, pixelLineFshad, pixelLineGshad).moveTo(m_shader);
 }
 
-void TileSheetGrid::draw(bool update, ox::Vec2 const&scroll) noexcept {
+void TileSheetGrid::draw(bool const update, ox::Vec2 const&scroll) noexcept {
+	// the lines just show up bigger on Windows for some reason
+	if constexpr(ox::defines::OS == ox::OS::Windows) {
+		glLineWidth(3 * m_pixelSizeMod * 0.25f);
+	} else {
 		glLineWidth(3 * m_pixelSizeMod * 0.5f);
+	}
 	glUseProgram(m_shader);
 	glBindVertexArray(m_bufferSet.vao);
 	if (update) {
@@ -46,7 +53,8 @@ void TileSheetGrid::initBufferSet(ox::Vec2 const&paneSize, TileSheet::SubSheet c
 	// vbo layout
 	auto const pt1Attr = static_cast<GLuint>(glGetAttribLocation(m_shader, "vPt1"));
 	glEnableVertexAttribArray(pt1Attr);
-	glVertexAttribPointer(pt1Attr, 2, GL_FLOAT, GL_FALSE, VertexVboRowLength * sizeof(float), nullptr);
+	glVertexAttribPointer(
+		pt1Attr, 2, GL_FLOAT, GL_FALSE, VertexVboRowLength * sizeof(float), nullptr);
 	auto const pt2Attr = static_cast<GLuint>(glGetAttribLocation(m_shader, "vPt2"));
 	glEnableVertexAttribArray(pt2Attr);
 	glVertexAttribPointer(pt2Attr, 2, GL_FLOAT, GL_FALSE, VertexVboRowLength * sizeof(float),
@@ -65,18 +73,18 @@ void TileSheetGrid::update(ox::Vec2 const&paneSize, TileSheet::SubSheet const&su
 }
 
 void TileSheetGrid::setBufferObject(
-		ox::Point pt1,
-		ox::Point pt2,
-		Color32 c,
-		float *vbo,
+		ox::Point const pt1,
+		ox::Point const pt2,
+		Color32 const c,
+		ox::Span<float> const vbo,
 		ox::Vec2 const&pixSize) noexcept {
 	auto const x1 = static_cast<float>(pt1.x) * pixSize.x - 1.f;
 	auto const y1 = 1.f - static_cast<float>(pt1.y) * pixSize.y;
 	auto const x2 = static_cast<float>(pt2.x) * pixSize.x - 1.f;
 	auto const y2 = 1.f - static_cast<float>(pt2.y) * pixSize.y;
-	// don't worry, this memcpy gets optimized to something much more ideal
+	// don't worry, this gets optimized to something much more ideal
 	ox::Array<float, VertexVboLength> const vertices = {x1, y1, x2, y2, redf(c), greenf(c), bluef(c)};
-	memcpy(vbo, vertices.data(), sizeof(vertices));
+	ox::spancpy(vbo, ox::SpanView<float>{vertices});
 }
 
 void TileSheetGrid::setBufferObjects(ox::Vec2 const&paneSize, TileSheet::SubSheet const&subsheet) noexcept {
@@ -87,7 +95,8 @@ void TileSheetGrid::setBufferObjects(ox::Vec2 const&paneSize, TileSheet::SubShee
 	}
 	auto const pixSize = pixelSize(paneSize);
 	auto const set = [&](std::size_t i, ox::Point pt1, ox::Point pt2, Color32 c) {
-		auto const vbo = &m_bufferSet.vertices[i * VertexVboLength];
+		auto const idx = i * VertexVboLength;
+		auto const vbo = ox::Span{m_bufferSet.vertices} + idx;
 		setBufferObject(pt1, pt2, c, vbo, pixSize);
 	};
 	// set buffer length

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheetpixelgrid.hpp

@@ -7,7 +7,6 @@
 #include <glutils/glutils.hpp>
 #include <studio/studio.hpp>
 
-#include <nostalgia/gfx/gfx.hpp>
 #include <nostalgia/gfx/tilesheet.hpp>
 
 namespace nostalgia::gfx {
@@ -74,7 +73,7 @@ class TileSheetGrid {
 		void update(ox::Vec2 const&paneSize, TileSheet::SubSheet const&subsheet) noexcept;
 
 	private:
-		static void setBufferObject(ox::Point pt1, ox::Point pt2, Color32 c, float *vbo, ox::Vec2 const&pixSize) noexcept;
+		static void setBufferObject(ox::Point pt1, ox::Point pt2, Color32 c, ox::Span<float> vbo, ox::Vec2 const&pixSize) noexcept;
 
 		void setBufferObjects(ox::Vec2 const&paneSize, TileSheet::SubSheet const&subsheet) noexcept;
 

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheetpixels.cpp

@@ -2,8 +2,6 @@
  * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
  */
 
-#include <nostalgia/gfx/consts.hpp>
-#include <nostalgia/gfx/ptidxconv.hpp>
 #include "tilesheeteditormodel.hpp"
 #include "tilesheetpixels.hpp"
 
@@ -88,11 +86,11 @@ ox::Vec2 TileSheetPixels::pixelSize(ox::Vec2 const&paneSize) const noexcept {
 
 void TileSheetPixels::setPixelBufferObject(
 		ox::Vec2 const&paneSize,
-		unsigned vertexRow,
+		unsigned const vertexRow,
 		float x, float y,
-		Color16 color,
-		float *vbo,
-		GLuint *ebo) const noexcept {
+		Color16 const color,
+		ox::Span<float> const vbo,
+		ox::Span<GLuint> const ebo) const noexcept {
 	auto const [xmod, ymod] = pixelSize(paneSize);
 	x *= xmod;
 	y *= -ymod;
@@ -106,12 +104,12 @@ void TileSheetPixels::setPixelBufferObject(
 			x + xmod, y + ymod, r, g, b, // top right
 			       x, y + ymod, r, g, b, // top left
 	};
-	memcpy(vbo, vertices.data(), sizeof(vertices));
+	ox::spancpy(vbo, ox::SpanView<float>{vertices});
 	std::array const elms = {
 			vertexRow + 0, vertexRow + 1, vertexRow + 2,
 			vertexRow + 2, vertexRow + 3, vertexRow + 0,
 	};
-	memcpy(ebo, elms.data(), sizeof(elms));
+	ox::spancpy(ebo, ox::SpanView<GLuint>{elms});
 }
 
 void TileSheetPixels::setBufferObjects(ox::Vec2 const&paneSize) noexcept {
@@ -137,8 +135,8 @@ void TileSheetPixels::setBufferObjects(ox::Vec2 const&paneSize) noexcept {
 		auto const pt = idxToPt(static_cast<int>(i), subSheet.columns);
 		auto const fx = static_cast<float>(pt.x);
 		auto const fy = static_cast<float>(pt.y);
-		auto const vbo = &m_bufferSet.vertices[i * vboLen];
-		auto const ebo = &m_bufferSet.elements[i * VertexEboLength];
+		auto const vbo = ox::Span{m_bufferSet.vertices} + i * vboLen;
+		auto const ebo = ox::Span{m_bufferSet.elements} + i * VertexEboLength;
 		if (i * vboLen + vboLen > m_bufferSet.vertices.size()) {
 			return;
 		}

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheetpixels.hpp

@@ -6,11 +6,9 @@
 
 #include <ox/std/vec.hpp>
 
-#include <glutils/glutils.hpp>
-#include <studio/studio.hpp>
-
 #include <nostalgia/gfx/color.hpp>
-#include <nostalgia/gfx/gfx.hpp>
+
+#include <glutils/glutils.hpp>
 
 namespace nostalgia::gfx {
 
@@ -44,15 +42,15 @@ class TileSheetPixels {
 
 	private:
 		void setPixelBufferObject(
-				ox::Vec2 const&paneS,
+				ox::Vec2 const&paneSize,
 				unsigned vertexRow,
 				float x,
 				float y,
 				Color16 color,
-				float *vbo,
-				GLuint *ebo) const noexcept;
+				ox::Span<float> vbo,
+				ox::Span<GLuint> ebo) const noexcept;
 
-		void setBufferObjects(ox::Vec2 const&paneS) noexcept;
+		void setBufferObjects(ox::Vec2 const&paneSize) noexcept;
 
 };