[nostalgia/studio] Set version to 2024.05.0

deps/glutils/include/glutils/glutils.hpp

@@ -13,7 +13,6 @@
 #include <ox/std/error.hpp>
 #include <ox/std/size.hpp>
 #include <ox/std/string.hpp>
-#include <ox/std/vec.hpp>
 #include <ox/std/vector.hpp>
 
 namespace glutils {
@@ -138,22 +137,6 @@ struct FrameBuffer {
 	constexpr operator const GLuint&() const noexcept {
 		return fbo.id;
 	}
-
-	[[nodiscard]]
-	constexpr ox::Vec2 sizef() const noexcept {
-		return {
-			static_cast<float>(width),
-			static_cast<float>(height),
-		};
-	}
-
-	[[nodiscard]]
-	constexpr ox::Size size() const noexcept {
-		return {
-			width,
-			height,
-		};
-	}
 };
 
 class FrameBufferBind {

deps/glutils/src/glutils.cpp

@@ -102,7 +102,7 @@ void setupShaderParams(
 		ox::Vector<ShaderVarSet> const&vars,
 		GLsizei vertexRowLen) noexcept {
 	// setup vars
-	for (size_t lenWritten = 0; auto const&v : vars) {
+	for (auto lenWritten = 0LU; auto const&v : vars) {
 		auto const attr = static_cast<GLuint>(glGetAttribLocation(shader, v.name.c_str()));
 		glEnableVertexAttribArray(attr);
 		glVertexAttribPointer(

deps/ox/src/ox/claw/format.hpp

@@ -10,7 +10,7 @@
 
 namespace ox {
 
-enum class ClawFormat {
+enum class ClawFormat: int {
 	None,
 	Metal,
 	Organic,

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

@@ -99,21 +99,6 @@ class FileSystem {
 
 		Result<FileStat> stat(const FileAddress &addr) const noexcept;
 
-		[[nodiscard]]
-		inline bool exists(uint64_t inode) const noexcept {
-			return statInode(inode).ok();
-		}
-
-		[[nodiscard]]
-		inline bool exists(ox::StringView path) const noexcept {
-			return statPath(path).ok();
-		}
-
-		[[nodiscard]]
-		inline bool exists(FileAddress const&addr) const noexcept {
-			return stat(addr).ok();
-		}
-
 		[[nodiscard]]
 		virtual uint64_t spaceNeeded(uint64_t size) const noexcept = 0;
 

deps/ox/src/ox/model/desctypes.hpp

@@ -34,8 +34,7 @@ constexpr auto buildTypeId() noexcept {
 	return ox::sfmt("{};{}", name, version);
 }
 
-static constexpr auto buildTypeId(
-		CRStringView name, int version,
+static constexpr auto buildTypeId(CRStringView name, int version,
                                   const TypeParamPack &typeParams = {}) noexcept {
 	String tp;
 	if (!typeParams.empty()) {
@@ -43,7 +42,7 @@ static constexpr auto buildTypeId(
 		for (const auto &p : typeParams) {
 			tp += p + ",";
 		}
-		tp.resize(tp.len());
+		tp.resize(tp.len() - 1);
 		tp += "#";
 	}
 	return ox::sfmt("{}{};{}", name, tp, version);

deps/ox/src/ox/preloader/preloader.hpp

@@ -94,7 +94,7 @@ class Preloader: public ModelHandlerBase<Preloader<PlatSpec>, OpType::Reflect> {
 		}
 
 		template<typename U, bool force>
-		constexpr ox::Error field(CRStringView, ox::UnionView<U, force> val) noexcept;
+		constexpr ox::Error field(CRStringView, const ox::UnionView<U, force> val) noexcept;
 
 		template<typename T>
 		constexpr ox::Error field(CRStringView, const T *val) noexcept;
@@ -135,9 +135,6 @@ class Preloader: public ModelHandlerBase<Preloader<PlatSpec>, OpType::Reflect> {
 		constexpr ox::Error fieldArray(CRStringView name, ox::ModelValueArray const*val) noexcept;
 
 		constexpr bool unionCheckAndIt() noexcept;
-
-		[[nodiscard]]
-		constexpr size_t calcPadding(size_t align) const noexcept;
 };
 
 template<typename PlatSpec>
@@ -268,7 +265,7 @@ template<typename PlatSpec>
 constexpr ox::Result<std::size_t> Preloader<PlatSpec>::startAlloc(size_t sz, size_t align) noexcept {
 	m_allocStack.emplace_back(static_cast<typename PlatSpec::PtrType>(m_writer.tellp()));
 	oxReturnError(m_writer.seekp(0, ox::ios_base::end));
-	auto const padding = calcPadding(align);
+	const auto padding = m_writer.tellp() % align;
 	oxRequireM(a, ox::allocate(m_writer, sz + padding));
 	a += padding;
 	oxReturnError(m_writer.seekp(a));
@@ -281,7 +278,7 @@ constexpr ox::Result<std::size_t> Preloader<PlatSpec>::startAlloc(
 		std::size_t sz, size_t align, std::size_t restore) noexcept {
 	m_allocStack.emplace_back(restore, ox::ios_base::beg);
 	oxReturnError(m_writer.seekp(0, ox::ios_base::end));
-	auto const padding = calcPadding(align);
+	const auto padding = m_writer.tellp() % align;
 	oxRequireM(a, ox::allocate(m_writer, sz + padding));
 	a += padding;
 	oxReturnError(m_writer.seekp(a));
@@ -361,7 +358,7 @@ constexpr ox::Error Preloader<PlatSpec>::fieldVector(
 		const auto sz = sizeOf<PlatSpec>(&(*val)[0]) * val->size();
 		const auto align = alignOf<PlatSpec>((*val)[0]);
 		oxReturnError(m_writer.seekp(0, ox::ios_base::end));
-		auto const padding = calcPadding(align);
+		const auto padding = m_writer.tellp() % align;
 		oxRequireM(p, ox::allocate(m_writer, sz + padding));
 		p += padding;
 		oxReturnError(m_writer.seekp(p));
@@ -384,6 +381,8 @@ constexpr ox::Error Preloader<PlatSpec>::fieldVector(
 
 template<typename PlatSpec>
 constexpr ox::Error Preloader<PlatSpec>::fieldArray(CRStringView, ox::ModelValueArray const*val) noexcept {
+	oxDebugf("array size: {}", val->size());
+	oxDebugf("array sizeOf: {}", sizeOf<PlatSpec>(val));
 	oxReturnError(pad(&(*val)[0]));
 	for (auto const&v : *val) {
 		oxReturnError(this->interface()->field({}, &v));
@@ -397,12 +396,6 @@ constexpr bool Preloader<PlatSpec>::unionCheckAndIt() noexcept {
 	return u.checkAndIterate();
 }
 
-template<typename PlatSpec>
-constexpr size_t Preloader<PlatSpec>::calcPadding(size_t align) const noexcept {
-	auto const excess = m_writer.tellp() % align;
-	return (align * (excess != 0)) - excess;
-}
-
 template<typename PlatSpec, typename T>
 constexpr ox::Error preload(Preloader<PlatSpec> *pl, ox::CommonPtrWith<T> auto *obj) noexcept {
 	oxReturnError(model(pl->interface(), obj));

deps/ox/src/ox/std/CMakeLists.txt

@@ -96,7 +96,6 @@ install(
 		buildinfo.hpp
 		byteswap.hpp
 		concepts.hpp
-		conv.hpp
 		def.hpp
 		defer.hpp
 		defines.hpp

deps/ox/src/ox/std/bit.hpp

@@ -32,7 +32,7 @@ constexpr To bit_cast(const From &src) noexcept requires(sizeof(To) == sizeof(Fr
 namespace ox {
 
 template<typename To, typename From>
-constexpr To cbit_cast(From src) noexcept requires(sizeof(To) == sizeof(From)) {
+constexpr typename enable_if<sizeof(To) == sizeof(From), To>::type cbit_cast(From src) noexcept {
 	To dst = {};
 	ox::memcpy(&dst, &src, sizeof(src));
 	return dst;

deps/ox/src/ox/std/concepts.hpp

@@ -8,7 +8,6 @@
 
 #pragma once
 
-#include "bit.hpp"
 #include "typetraits.hpp"
 
 namespace ox {
@@ -30,6 +29,4 @@ concept OxString_c = isOxString_v<T>;
 template<typename T>
 concept Integral_c = ox::is_integral_v<T>;
 
-template<typename T, size_t max>
-concept IntegerRange_c = ox::is_integer_v<T> && ox::MaxValue<T> >= max;
 }

deps/ox/src/ox/std/conv.hpp

@@ -1,45 +0,0 @@
-/*
- * Copyright 2015 - 2024 gary@drinkingtea.net
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include "point.hpp"
-#include "size.hpp"
-#include "vec.hpp"
-
-namespace ox {
-
-constexpr Vec2::operator Point() const noexcept {
-	return {
-			static_cast<int32_t>(x),
-			static_cast<int32_t>(y),
-	};
-}
-
-constexpr Vec2::operator Size() const noexcept {
-	return {
-			static_cast<int32_t>(x),
-			static_cast<int32_t>(y),
-	};
-}
-
-constexpr Point::operator Vec2() const noexcept {
-	return {
-			static_cast<float>(x),
-			static_cast<float>(y),
-	};
-}
-
-constexpr Size::operator Vec2() const noexcept {
-	return {
-		static_cast<float>(width),
-		static_cast<float>(height),
-	};
-}
-
-}

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

@@ -128,10 +128,6 @@ struct SpanIterator {
 			return operator-=(1);
 		}
 
-		constexpr PtrType operator->() const noexcept {
-			return &m_t[m_offset];
-		}
-
 		constexpr RefType operator*() const noexcept {
 			return m_t[m_offset];
 		}

deps/ox/src/ox/std/new.hpp

@@ -102,7 +102,6 @@ class MallocaPtr {
 		}
 
 		constexpr ~MallocaPtr() noexcept {
-			m_val->~T();
 			if (m_onHeap && m_val) {
 				delete[] reinterpret_cast<uint8_t*>(m_val);
 			}

deps/ox/src/ox/std/point.hpp

@@ -17,8 +17,8 @@ class Point {
 	public:
 		static constexpr auto TypeName = "net.drinkingtea.ox.Point";
 		static constexpr auto TypeVersion = 1;
-		int32_t x = 0;
-		int32_t y = 0;
+		int x = 0;
+		int y = 0;
 
 		constexpr Point() noexcept = default;
 
@@ -64,7 +64,6 @@ class Point {
 
 		constexpr bool operator!=(const Point&) const noexcept;
 
-		explicit constexpr operator class Vec2() const noexcept;
 };
 
 constexpr Point::Point(int x, int y) noexcept {

deps/ox/src/ox/std/reader.cpp

@@ -8,7 +8,7 @@
 
 
 #ifdef OX_USE_STDLIB
-#include <istream>
+#include <cstdio>
 
 #include "array.hpp"
 #include "reader.hpp"
@@ -16,56 +16,41 @@
 namespace ox {
 
 [[nodiscard]]
-constexpr std::ios_base::seekdir sdMap(ox::ios_base::seekdir in) noexcept {
+constexpr int sdMap(ox::ios_base::seekdir in) noexcept {
 	switch (in) {
 		case ox::ios_base::beg:
-			return std::ios_base::beg;
+			return SEEK_SET;
 		case ox::ios_base::end:
-			return std::ios_base::end;
+			return SEEK_END;
 		case ox::ios_base::cur:
-			return std::ios_base::cur;
+			return SEEK_CUR;
 	}
-	return std::ios_base::beg;
+	return -1;
 }
 
-ox::Result<char> StreamReader::peek() const noexcept {
-	try {
-		char c{};
-		m_strm.get(c);
+ox::Result<char> FileReader::peek() const noexcept {
+	auto const c = fgetc(m_file);
 	auto const ok = c != EOF;
-		if (ok && m_strm.unget()) [[unlikely]] {
+	if (ok && ungetc(c, m_file)) [[unlikely]] {
 		return OxError(1, "Unable to unget character");
 	}
 	return {static_cast<char>(c), OxError(!ok, "File peek failed")};
-	} catch (std::exception const&) {
-		return OxError(1, "peek failed");
-	}
 }
 
-ox::Result<std::size_t> StreamReader::read(char *v, std::size_t cnt) noexcept {
-	return static_cast<size_t>(m_strm.read(v, static_cast<std::streamsize>(cnt)).gcount());
+ox::Result<std::size_t> FileReader::read(char *v, std::size_t cnt) noexcept {
+	return fread(v, 1, cnt, m_file);
 }
 
-ox::Error StreamReader::seekg(std::size_t p) noexcept {
-	try {
-		m_strm.seekg(static_cast<long long int>(p), std::ios_base::cur);
-	} catch (std::exception const&) {
-		return OxError(1, "seekg failed");
-	}
-	return {};
+ox::Error FileReader::seekg(std::size_t p) noexcept {
+	return OxError(fseek(m_file, static_cast<int64_t>(p), SEEK_CUR) != 0);
 }
 
-ox::Error StreamReader::seekg(int64_t p, ios_base::seekdir sd) noexcept {
-	try {
-		m_strm.seekg(p, sdMap(sd));
-	} catch (std::exception const&) {
-		return OxError(1, "seekg failed");
-	}
-	return {};
+ox::Error FileReader::seekg(int64_t p, ios_base::seekdir sd) noexcept {
+	return OxError(fseek(m_file, p, sdMap(sd)) != 0);
 }
 
-ox::Result<std::size_t> StreamReader::tellg() noexcept {
-	const auto sz = m_strm.tellg();
+ox::Result<std::size_t> FileReader::tellg() noexcept {
+	const auto sz = ftell(m_file);
 	return {static_cast<std::size_t>(sz), OxError(sz == -1)};
 }
 

deps/ox/src/ox/std/reader.hpp

@@ -9,7 +9,7 @@
 #pragma once
 
 #ifdef OX_USE_STDLIB
-#include <istream>
+#include <cstdio>
 #endif
 
 #include "concepts.hpp"
@@ -65,11 +65,11 @@ class ReaderT: public Reader_v {
 };
 
 #ifdef OX_USE_STDLIB
-class StreamReader: public Reader_v {
+class FileReader: public Reader_v {
 	private:
-		std::istream &m_strm;
+		FILE *m_file = nullptr;
 	public:
-		constexpr explicit StreamReader(std::istream &stream) noexcept: m_strm(stream) {}
+		constexpr explicit FileReader(FILE *file) noexcept: m_file(file) {}
 		ox::Result<char> peek() const noexcept override;
 		ox::Result<std::size_t> read(char *v, std::size_t cnt) noexcept override;
 		ox::Error seekg(std::size_t p) noexcept override;

deps/ox/src/ox/std/size.hpp

@@ -17,8 +17,8 @@ class Size {
 	public:
 		static constexpr auto TypeName = "net.drinkingtea.ox.Size";
 		static constexpr auto TypeVersion = 1;
-		int32_t width = 0;
-		int32_t height = 0;
+		int width = 0;
+		int height = 0;
 
 		constexpr Size() noexcept = default;
 
@@ -64,7 +64,6 @@ class Size {
 
 		constexpr bool operator!=(const Size&) const noexcept;
 
-		explicit constexpr operator class Vec2() const noexcept;
 };
 
 constexpr Size::Size(int width, int height) noexcept {

deps/ox/src/ox/std/smallmap.hpp

@@ -8,7 +8,7 @@
 
 #pragma once
 
-#include "def.hpp"
+#include "algorithm.hpp"
 #include "hash.hpp"
 #include "ignore.hpp"
 #include "stringview.hpp"
@@ -28,7 +28,7 @@ class SmallMap {
 			T value{};
 		};
 
-	protected:
+	private:
 		using PairVector = Vector<Pair, SmallSz>;
 		PairVector m_pairs;
 
@@ -39,6 +39,8 @@ class SmallMap {
 
 		constexpr SmallMap(SmallMap &&other) noexcept;
 
+		constexpr ~SmallMap();
+
 		constexpr bool operator==(SmallMap const&other) const;
 
 		constexpr SmallMap &operator=(SmallMap const&other);
@@ -77,11 +79,6 @@ class SmallMap {
 		[[nodiscard]]
 		constexpr Pair &get(size_t i) noexcept;
 
-		[[nodiscard]]
-		constexpr ox::SpanView<Pair> pairs() const noexcept {
-			return m_pairs;
-		}
-
 		constexpr void clear();
 
 	private:
@@ -103,6 +100,11 @@ constexpr SmallMap<K, T, SmallSz>::SmallMap(SmallMap<K, T, SmallSz> &&other) noe
 	m_pairs = std::move(other.m_pairs);
 }
 
+template<typename K, typename T, size_t SmallSz>
+constexpr SmallMap<K, T, SmallSz>::~SmallMap() {
+	clear();
+}
+
 template<typename K, typename T, size_t SmallSz>
 constexpr bool SmallMap<K, T, SmallSz>::operator==(SmallMap const&other) const {
 	return m_pairs == other.m_pairs;
@@ -202,12 +204,12 @@ constexpr T &SmallMap<K, T, SmallSz>::value(size_t i) noexcept {
 }
 
 template<typename K, typename T, size_t SmallSz>
-constexpr typename SmallMap<K, T, SmallSz>::Pair const&SmallMap<K, T, SmallSz>::get(size_t i) const noexcept {
+constexpr SmallMap<K, T, SmallSz>::Pair const&SmallMap<K, T, SmallSz>::get(size_t i) const noexcept {
 	return m_pairs[i];
 }
 
 template<typename K, typename T, size_t SmallSz>
-constexpr typename SmallMap<K, T, SmallSz>::Pair &SmallMap<K, T, SmallSz>::get(size_t i) noexcept {
+constexpr SmallMap<K, T, SmallSz>::Pair &SmallMap<K, T, SmallSz>::get(size_t i) noexcept {
 	return m_pairs[i];
 }
 
@@ -244,12 +246,4 @@ constexpr typename SmallMap<K, T, SmallSz>::Pair &SmallMap<K, T, SmallSz>::acces
 	return pairs.emplace_back();
 }
 
-template<typename T, typename K, typename V, size_t SmallSz>
-constexpr Error model(T *io, ox::CommonPtrWith<SmallMap<K, V, SmallSz>> auto *obj) noexcept {
-	using Map = SmallMap<K, V, SmallSz>;
-	oxReturnError(io->template setTypeInfo<Map>());
-	oxReturnError(io->field("pairs", &obj->m_pairs));
-	return {};
-}
-
 }

deps/ox/src/ox/std/stacktrace.cpp

@@ -26,7 +26,7 @@
 namespace ox {
 
 #if defined(OX_USE_STDLIB) && __has_include(<unistd.h>)
-[[nodiscard]] [[maybe_unused]]
+[[nodiscard]]
 static auto symbolicate([[maybe_unused]]void **frames,
                         [[maybe_unused]]std::size_t frameCnt,
                         [[maybe_unused]]const char *linePrefix) {

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

@@ -16,7 +16,6 @@
 #include "istring.hpp"
 #include "byteswap.hpp"
 #include "concepts.hpp"
-#include "conv.hpp"
 #include "cstringview.hpp"
 #include "cstrops.hpp"
 #include "def.hpp"

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

@@ -194,7 +194,6 @@ class BasicString {
 
 		constexpr void resize(size_t sz) noexcept {
 			m_buff.resize(sz);
-			m_buff[sz - 1] = 0;
 		}
 
 		[[nodiscard]]

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

@@ -18,12 +18,12 @@
 #include <ox/std/std.hpp>
 
 [[nodiscard]]
-static uint64_t steadyNowMs() {
+static uint64_t nowMs() {
 #if __has_include(<chrono>)
 	using namespace std::chrono;
 	return static_cast<uint64_t>(
 			duration_cast<milliseconds>(
-					steady_clock::now().time_since_epoch()).count());
+					system_clock::now().time_since_epoch()).count());
 #else
 	return 0;
 #endif
@@ -41,13 +41,13 @@ uint64_t timeMapStrToUuid(int elemCnt, int lookups, uint64_t seed = 4321) noexce
 	auto const keys = map.keys();
 	ox::Random rand;
 	// start
-	auto const startTime = steadyNowMs();
+	auto const startTime = nowMs();
 	for (int i = 0; i < lookups; ++i) {
 		auto const&k = keys[rand.gen() % keys.size()];
 		map[k];
 		oxExpect(map[k], ox::UUID::fromString(k).unwrap());
 	}
-	return steadyNowMs() - startTime;
+	return nowMs() - startTime;
 }
 
 template<typename Map = ox::SmallMap<ox::UUID, ox::String>>
@@ -62,16 +62,16 @@ uint64_t timeMapUuidToStr(int elemCnt, int lookups, uint64_t seed = 4321) noexce
 	auto const keys = map.keys();
 	ox::Random rand;
 	// start
-	auto const startTime = steadyNowMs();
+	auto const startTime = nowMs();
 	for (int i = 0; i < lookups; ++i) {
 		auto const&k = keys[rand.gen() % keys.size()];
 		oxExpect(map[k], k.toString());
 	}
-	return steadyNowMs() - startTime;
+	return nowMs() - startTime;
 }
 
 static ox::Error compareMaps(int lookupCnt = 1'000'000) {
-	auto const seed = steadyNowMs();
+	auto const seed = nowMs();
 	uint64_t hashTime{};
 	uint64_t smallTime{};
 	int elemCnt = 1;

deps/ox/src/ox/std/typetraits.hpp

@@ -185,8 +185,6 @@ struct enable_if<true, T> {
 	using type = T;
 };
 
-template<bool B, typename T>
-using enable_if_t = typename enable_if<B, T>::type;
 
 template<typename T>
 struct is_pointer {

deps/ox/src/ox/std/vec.hpp

@@ -23,16 +23,17 @@
 
 namespace ox {
 
-class Vec2 {
+template<typename T>
+struct Vec {
 	public:
-		using value_type = float;
+		using value_type = T;
 		using size_type = std::size_t;
 
 		static constexpr auto TypeName = "net.drinkingtea.ox.Point";
 		static constexpr auto TypeVersion = 1;
 
-		float x = 0;
-		float y = 0;
+		T x = 0;
+		T y = 0;
 
 		template<typename RefType = value_type&, typename PtrType = value_type*, bool reverse = false>
 		struct iterator: public ox::Iterator<std::bidirectional_iterator_tag, value_type> {
@@ -140,14 +141,14 @@ class Vec2 {
 
 		};
 
-		constexpr Vec2() noexcept = default;
+		constexpr Vec() noexcept = default;
 
 		template<typename ...Args>
-		constexpr Vec2(float pX, float pY) noexcept: x(pX), y(pY) {
+		constexpr Vec(T pX, T pY) noexcept: x(pX), y(pY) {
 		}
 
 #if __has_include(<imgui.h>)
-		explicit constexpr Vec2(const ImVec2 &v) noexcept: Vec2(v.x, v.y) {
+		explicit constexpr Vec(const ImVec2 &v) noexcept: Vec(v.x, v.y) {
 		}
 
 		explicit inline operator ImVec2() const noexcept {
@@ -227,7 +228,7 @@ class Vec2 {
 			}
 		}
 
-		constexpr auto operator==(const Vec2 &v) const noexcept {
+		constexpr auto operator==(const Vec &v) const noexcept {
 			for (auto i = 0u; i < v.size(); ++i) {
 				if ((*this)[i] != v[i]) {
 					return false;
@@ -236,71 +237,29 @@ class Vec2 {
 			return true;
 		}
 
-		constexpr auto operator!=(const Vec2 &v) const noexcept {
+		constexpr auto operator!=(const Vec &v) const noexcept {
 			return !operator==(v);
 		}
 
-		explicit constexpr operator class Point() const noexcept;
-
-		explicit constexpr operator class Size() const noexcept;
-
 		[[nodiscard]]
 		constexpr std::size_t size() const noexcept {
 			return 2;
 		}
 
-		constexpr Vec2 operator+(float i) const noexcept {
-			return {x + i, y + i};
-		}
-
-		constexpr Vec2 operator+=(float i) noexcept {
-			x += i;
-			y += i;
-			return *this;
-		}
-
-		constexpr Vec2 operator-(float i) const noexcept {
-			return {x - i, y - i};
-		}
-
-		constexpr Vec2 operator-=(float i) noexcept {
-			x -= i;
-			y -= i;
-			return *this;
-		}
-
-		constexpr Vec2 operator*(float i) const noexcept {
-			return {x * i, y * i};
-		}
-
-		constexpr Vec2 operator*=(float i) noexcept {
-			x *= i;
-			y *= i;
-			return *this;
-		}
-
-		constexpr Vec2 operator/(float i) const noexcept {
-			return {x / i, y / i};
-		}
-
-		constexpr Vec2 operator/=(float i) noexcept {
-			x /= i;
-			y /= i;
-			return *this;
-		}
-
 	protected:
 		[[nodiscard]]
-		constexpr float *start() noexcept {
+		constexpr T *start() noexcept {
 			return &x;
 		}
 
 		[[nodiscard]]
-		constexpr const float *start() const noexcept {
+		constexpr const T *start() const noexcept {
 			return &x;
 		}
 };
 
+using Vec2 = Vec<float>;
+
 template<typename T>
 constexpr Error model(T *io, ox::CommonPtrWith<Vec2> auto *obj) noexcept {
 	oxReturnError(io->template setTypeInfo<Vec2>());

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

@@ -271,7 +271,7 @@ class Vector: detail::VectorAllocator<T, Allocator, SmallVectorSize> {
 		constexpr bool contains(MaybeView_t<T> const&) const noexcept;
 
 		constexpr iterator<T&, T*, false> insert(
-				std::size_t pos, std::size_t cnt, T const&val) noexcept(useNoexcept);
+				std::size_t pos, std::size_t cnt, T val) noexcept(useNoexcept);
 
 		constexpr iterator<T&, T*, false> insert(std::size_t pos, T val) noexcept(useNoexcept);
 
@@ -531,23 +531,29 @@ constexpr bool Vector<T, SmallVectorSize, Allocator>::contains(MaybeView_t<T> co
 template<typename T, std::size_t SmallVectorSize, typename Allocator>
 constexpr typename Vector<T, SmallVectorSize, Allocator>::template iterator<T&, T*, false>
 Vector<T, SmallVectorSize, Allocator>::insert(
-		std::size_t pos, std::size_t cnt, T const&val) noexcept(useNoexcept) {
+		std::size_t pos, std::size_t cnt, T val) noexcept(useNoexcept) {
 	if (m_size + cnt > m_cap) {
 		reserveInsert(m_cap ? m_size + cnt : initialCap, pos, cnt);
-	}
 		if (pos < m_size) {
-		for (auto i = m_size + cnt - 1; i > pos; --i) {
-			std::construct_at(&m_items[i], std::move(m_items[i - cnt]));
-		}
-		for (auto i = pos; i < pos + cnt; ++i) {
-			m_items[i] = val;
-		}
+			m_items[pos] = std::move(val);
 		} else {
 			for (auto i = 0u; i < cnt; ++i) {
 				std::construct_at(&m_items[pos + i], m_items[pos]);
 			}
 		}
-	m_size += cnt;
+	} else {
+		if (pos < m_size) {
+			for (auto i = m_size + cnt - 1; i > pos; --i) {
+				std::construct_at(&m_items[i], std::move(m_items[i - cnt]));
+			}
+			m_items[pos] = std::move(val);
+		} else {
+			for (auto i = 0u; i < cnt; ++i) {
+				std::construct_at(&m_items[pos + i], m_items[pos]);
+			}
+		}
+	}
+	++m_size;
 	return begin() + pos;
 }
 
@@ -556,14 +562,20 @@ constexpr typename Vector<T, SmallVectorSize, Allocator>::template iterator<T&,
 Vector<T, SmallVectorSize, Allocator>::insert(std::size_t pos, T val) noexcept(useNoexcept) {
 	if (m_size == m_cap) {
 		reserveInsert(m_cap ? m_cap * 2 : initialCap, pos);
+		if (pos < m_size) {
+			m_items[pos] = std::move(val);
+		} else {
+			std::construct_at(&m_items[pos], m_items[pos]);
 		}
+	} else {
 		if (pos < m_size) {
 			for (auto i = m_size; i > pos; --i) {
 				std::construct_at(&m_items[i], std::move(m_items[i - 1]));
 			}
 			m_items[pos] = std::move(val);
 		} else {
-		std::construct_at(&m_items[pos], std::move(val));
+			std::construct_at(&m_items[pos], m_items[pos]);
+		}
 	}
 	++m_size;
 	return begin() + pos;

developer-handbook.md

@@ -162,10 +162,18 @@ classes in question.
 
 ### Error Handling
 
-The GBA build has exceptions disabled.
-Instead of throwing exceptions, all engine code must return ```ox::Error```s.
-For the sake of consistency, try to stick to ```ox::Error``` in non-engine code
-as well, but non-engine code is free to use exceptions when they make sense.
+Exceptions are clean and nice in userland code running in environments with
+expansive system resources, but they are a bit of a pain in small bare metal
+environments.
+The GBA build has them disabled.
+Exceptions cause also the compiler to generate a great deal of extra code that
+inflates the size of the binary.
+The binary size bloat is often cited as one of the main reasons why many
+embedded developers prefer C to C++.
+
+Instead of throwing exceptions, all engine code must return Ox error codes.
+For the sake of consistency, try to stick to Ox error codes in non-engine code
+as well.
 Nostalgia and Ox both use ```ox::Error``` to report errors. ```ox::Error``` is
 a struct that has overloaded operators to behave like an integer error code,
 plus some extra fields to enhance debuggability.
@@ -211,30 +219,6 @@ int caller2() {
 	std::cout << val << '\n';
 	return 0;
 }
-
-ox::Error caller3(int &i) {
-    return foo(i).moveTo(i);
-}
-
-ox::Error caller4(int &i) {
-    return foo(i).copyTo(i);
-}
-
-int caller5(int i) {
-    return foo(i).unwrap(); // unwrap will kill the program if there is an error
-}
-
-int caller6(int i) {
-    return foo(i).unwrapThrow(); // unwrap will throw if there is an error
-}
-
-int caller7(int i) {
-    return foo(i).or_value(0); // will return 0 if foo returned an error
-}
-
-ox::Result<uint64_t> caller8(int i) {
-    return foo(i).to<uint64_t>(); // will convert the result of foo to uint64_t
-}
 ```
 
 Lastly, there are a few macros available to help in passing ```ox::Error```s
@@ -291,7 +275,6 @@ ox::Error engineCode() noexcept {
 	return OxError(0);
 }
 ```
-
 Ox also has the ```oxRequire``` macro, which will initialize a value if there is no error, and return if there is.
 It aims to somewhat emulate the ```?``` operator in Rust and Swift.
 
@@ -326,9 +309,6 @@ ox::Result<int> f2() noexcept {
 * ```oxRequireT``` - oxRequire Throw
 * ```oxRequireMT``` - oxRequire Mutable Throw
 
-The throw variants of ```oxRequire``` are generally legacy code.
-```ox::Result::unwrapThrow``` is generally preferred now.
-
 ### Logging and Output
 
 Ox provides for logging and debug prints via the ```oxTrace```, ```oxDebug```, and ```oxError``` macros.
@@ -546,13 +526,19 @@ a wrapper around the bare formats.
 ```cpp
 #include <ox/mc/read.hpp>
 
-ox::Result<NostalgiaPalette> loadPalette1(ox::BufferView const&buff) noexcept {
+ox::Result<NostalgiaPalette> loadPalette1(const Buffer &buff) noexcept {
 	return ox::readMC<NostalgiaPalette>(buff);
 }
 
-ox::Result<NostalgiaPalette> loadPalette2(ox::BufferView const&buff) noexcept {
+ox::Result<NostalgiaPalette> loadPalette2(const Buffer &buff) noexcept {
+	return ox::readMC<NostalgiaPalette>(buff.data(), buff.size());
+}
+
+ox::Result<NostalgiaPalette> loadPalette3(const Buffer &buff) noexcept {
 	NostalgiaPalette pal;
-	oxReturnError(ox::readMC(buff, pal));
+	std::size_t sz = 0;
+	oxReturnError(ox::readMC(buff.data(), buff.size(), &pal, &sz));
+	buffer.resize(sz);
 	return pal;
 }
 ```
@@ -562,7 +548,7 @@ ox::Result<NostalgiaPalette> loadPalette2(ox::BufferView const&buff) noexcept {
 ```cpp
 #include <ox/mc/write.hpp>
 
-ox::Result<ox::Buffer> writeSpritePalette1(NostalgiaPalette const&pal) noexcept {
+ox::Result<ox::Buffer> writeSpritePalette1(NostalgiaPalette *pal) noexcept {
 	ox::Buffer buffer(ox::units::MB);
 	std::size_t sz = 0;
 	oxReturnError(ox::writeMC(buffer.data(), buffer.size(), pal, &sz));
@@ -570,7 +556,7 @@ ox::Result<ox::Buffer> writeSpritePalette1(NostalgiaPalette const&pal) noexcept
 	return buffer;
 }
 
-ox::Result<ox::Buffer> writeSpritePalette2(NostalgiaPalette const&pal) noexcept {
+ox::Result<ox::Buffer> writeSpritePalette2(NostalgiaPalette *pal) noexcept {
 	return ox::writeMC(pal);
 }
 ```
@@ -582,13 +568,17 @@ ox::Result<ox::Buffer> writeSpritePalette2(NostalgiaPalette const&pal) noexcept
 ```cpp
 #include <ox/oc/read.hpp>
 
-ox::Result<NostalgiaPalette> loadPalette1(ox::BufferView const&buff) noexcept {
+ox::Result<NostalgiaPalette> loadPalette1(const Buffer &buff) noexcept {
 	return ox::readOC<NostalgiaPalette>(buff);
 }
 
-ox::Result<NostalgiaPalette> loadPalette2(ox::BufferView const&buff) noexcept {
+ox::Result<NostalgiaPalette> loadPalette2(const Buffer &buff) noexcept {
+	return ox::readOC<NostalgiaPalette>(buff.data(), buff.size());
+}
+
+ox::Result<NostalgiaPalette> loadPalette3(const Buffer &buff) noexcept {
 	NostalgiaPalette pal;
-	oxReturnError(ox::readOC(buff, &pal));
+	oxReturnError(ox::readOC(buff.data(), buff.size(), &pal));
 	return pal;
 }
 ```
@@ -598,13 +588,13 @@ ox::Result<NostalgiaPalette> loadPalette2(ox::BufferView const&buff) noexcept {
 ```cpp
 #include <ox/oc/write.hpp>
 
-ox::Result<ox::Buffer> writeSpritePalette1(NostalgiaPalette const&pal) noexcept {
+ox::Result<ox::Buffer> writeSpritePalette1(NostalgiaPalette *pal) noexcept {
 	ox::Buffer buffer(ox::units::MB);
 	oxReturnError(ox::writeOC(buffer.data(), buffer.size(), pal));
 	return buffer;
 }
 
-ox::Result<ox::Buffer> writeSpritePalette2(NostalgiaPalette const&pal) noexcept {
+ox::Result<ox::Buffer> writeSpritePalette2(NostalgiaPalette *pal) noexcept {
 	return ox::writeOC(pal);
 }
 ```
@@ -616,13 +606,17 @@ ox::Result<ox::Buffer> writeSpritePalette2(NostalgiaPalette const&pal) noexcept
 ```cpp
 #include <ox/claw/read.hpp>
 
-ox::Result<NostalgiaPalette> loadPalette1(ox::BufferView const&buff) noexcept {
+ox::Result<NostalgiaPalette> loadPalette1(const Buffer &buff) noexcept {
 	return ox::readClaw<NostalgiaPalette>(buff);
 }
 
-ox::Result<NostalgiaPalette> loadPalette2(ox::BufferView const&buff) noexcept {
+ox::Result<NostalgiaPalette> loadPalette2(const Buffer &buff) noexcept {
+	return ox::readClaw<NostalgiaPalette>(buff.data(), buff.size());
+}
+
+ox::Result<NostalgiaPalette> loadPalette3(const Buffer &buff) noexcept {
 	NostalgiaPalette pal;
-	oxReturnError(ox::readClaw(buff, pal));
+	oxReturnError(ox::readClaw(buff.data(), buff.size(), &pal));
 	return pal;
 }
 ```
@@ -632,8 +626,8 @@ ox::Result<NostalgiaPalette> loadPalette2(ox::BufferView const&buff) noexcept {
 ```cpp
 #include <ox/claw/write.hpp>
 
-ox::Result<ox::Buffer> writeSpritePalette(NostalgiaPalette const&pal) noexcept {
-	return ox::writeClaw(pal);
+ox::Result<ox::Buffer> writeSpritePalette(NostalgiaPalette *pal) noexcept {
+	return ox::writeClaw(&pal);
 }
 ```
 

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

@@ -4,7 +4,6 @@
 
 #pragma once
 
-#include <ox/std/math.hpp>
 #include <ox/std/types.hpp>
 
 namespace nostalgia::core {
@@ -152,13 +151,4 @@ static_assert(color16(16, 31, 0) == 1008);
 static_assert(color16(16, 31, 8) == 9200);
 static_assert(color16(16, 32, 8) == 9200);
 
-[[nodiscard]]
-constexpr Color16 applySelectionColor(Color16 const color) noexcept {
-	namespace core = nostalgia::core;
-	auto const r = core::red16(color) / 2;
-	auto const g = (core::green16(color) + 20) / 2;
-	auto const b = (core::blue16(color) + 31) / 2;
-	return core::color16(r, g, b);
-}
-
 }

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

@@ -103,12 +103,6 @@ oxModelEnd()
 
 void addEntry(TileSheetSet &set, ox::FileAddress path, int32_t begin = 0, int32_t size = -1) noexcept;
 
-[[nodiscard]]
-int tileColumns(Context&) noexcept;
-
-[[nodiscard]]
-int tileRows(Context&) noexcept;
-
 ox::Error loadBgPalette(
 		Context &ctx,
 		size_t palBank,

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

@@ -222,14 +222,6 @@ ox::Error setPixelCount(TileSheet::SubSheet &ss, int8_t pBpp, std::size_t cnt) n
 [[nodiscard]]
 unsigned pixelCnt(TileSheet::SubSheet const&ss, int8_t pBpp) noexcept;
 
-/**
- *
- * @param ss
- * @param pBpp
- * @param sz size of Subsheet in tiles (not pixels)
- */
-ox::Error resizeSubsheet(TileSheet::SubSheet &ss, int8_t pBpp, ox::Size const&sz) noexcept;
-
 /**
  * validateSubSheetIdx takes a SubSheetIdx and moves the index to the
  * preceding or parent sheet if the current corresponding sheet does

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

@@ -22,6 +22,8 @@
 
 namespace nostalgia::core {
 
+constexpr auto GbaTileColumns = 32;
+constexpr auto GbaTileRows = 32;
 constexpr auto SpriteCount = 128;
 
 struct GbaTileMapTarget {
@@ -282,8 +284,8 @@ ox::Error loadSpriteTileSheet(
 	return {};
 }
 
-void setBgTile(Context &ctx, uint_t bgIdx, int column, int row, BgTile const&tile) noexcept {
-	auto const tileIdx = static_cast<std::size_t>(row * tileColumns(ctx) + column);
+void setBgTile(Context&, uint_t bgIdx, int column, int row, BgTile const&tile) noexcept {
+	auto const tileIdx = static_cast<std::size_t>(row * GbaTileColumns + column);
 	// see Tonc 9.3
 	MEM_BG_MAP[bgIdx][tileIdx] =
 			static_cast<uint16_t>(tile.tileIdx & 0b1'1111'1111) |
@@ -292,8 +294,8 @@ void setBgTile(Context &ctx, uint_t bgIdx, int column, int row, BgTile const&til
 			static_cast<uint16_t>(tile.palBank << 0xc);
 }
 
-void clearBg(Context &ctx, uint_t bgIdx) noexcept {
-	memset(MEM_BG_MAP[bgIdx].data(), 0, static_cast<size_t>(tileRows(ctx) * tileColumns(ctx)));
+void clearBg(Context&, uint_t bgIdx) noexcept {
+	memset(MEM_BG_MAP[bgIdx].data(), 0, GbaTileRows * GbaTileColumns);
 }
 
 uint8_t bgStatus(Context&) noexcept {

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

@@ -6,17 +6,6 @@
 
 namespace nostalgia::core {
 
-constexpr auto GbaTileColumns = 32;
-constexpr auto GbaTileRows = 32;
-
-int tileColumns(Context&) noexcept {
-	return GbaTileColumns;
-}
-
-int tileRows(Context&) noexcept {
-	return GbaTileRows;
-}
-
 // map ASCII values to the nostalgia charset
 constexpr ox::Array<char, 128> charMap = {
 	0,

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

@@ -385,8 +385,7 @@ static void setSprite(
 		uint_t const idx,
 		Sprite const&s) noexcept {
 	// Tonc Table 8.4
-	struct Sz { uint_t x{}, y{}; };
-	static constexpr ox::Array<Sz, 12> dimensions{
+	static constexpr ox::Array<ox::Vec<uint_t>, 12> dimensions{
 			// col 0
 			{1, 1}, // 0, 0
 			{2, 2}, // 0, 1

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

@@ -79,13 +79,13 @@ void PaletteEditorImGui::drawColorsEditor() noexcept {
 		if (ImGui::Button("Add", sz)) {
 			auto const colorSz = static_cast<int>(colors(m_pal, m_page));
 			constexpr Color16 c = 0;
-			std::ignore = undoStack()->push(ox::make_unique<AddColorCommand>(&m_pal, c, m_page, colorSz));
+			undoStack()->push(ox::make_unique<AddColorCommand>(&m_pal, c, m_page, colorSz));
 		}
 		ImGui::SameLine();
 		ImGui::BeginDisabled(m_selectedColorRow >= colors(m_pal, m_page));
 		{
 			if (ImGui::Button("Remove", sz)) {
-				std::ignore = undoStack()->push(
+				undoStack()->push(
 						ox::make_unique<RemoveColorCommand>(
 								&m_pal,
 								color(m_pal, m_page, static_cast<std::size_t>(m_selectedColorRow)),
@@ -97,7 +97,7 @@ void PaletteEditorImGui::drawColorsEditor() noexcept {
 			ImGui::BeginDisabled(m_selectedColorRow <= 0);
 			{
 				if (ImGui::Button("Move Up", sz)) {
-					std::ignore = undoStack()->push(ox::make_unique<MoveColorCommand>(&m_pal, m_page, m_selectedColorRow, -1));
+					undoStack()->push(ox::make_unique<MoveColorCommand>(&m_pal, m_page, m_selectedColorRow, -1));
 					--m_selectedColorRow;
 				}
 			}
@@ -106,7 +106,7 @@ void PaletteEditorImGui::drawColorsEditor() noexcept {
 			ImGui::BeginDisabled(m_selectedColorRow >= colors(m_pal, m_page) - 1);
 			{
 				if (ImGui::Button("Move Down", sz)) {
-					std::ignore = undoStack()->push(ox::make_unique<MoveColorCommand>(&m_pal, m_page, m_selectedColorRow, 1));
+					undoStack()->push(ox::make_unique<MoveColorCommand>(&m_pal, m_page, m_selectedColorRow, 1));
 					++m_selectedColorRow;
 				}
 			}
@@ -155,17 +155,17 @@ void PaletteEditorImGui::drawPagesEditor() noexcept {
 	constexpr auto toolbarHeight = 40;
 	auto const btnSz = ImVec2(paneSz.x / 3 - 5.5f, 24);
 	if (ImGui::Button("Add", btnSz)) {
-		std::ignore = undoStack()->push(ox::make_unique<AddPageCommand>(m_pal));
+		undoStack()->push(ox::make_unique<AddPageCommand>(m_pal));
 		m_page = m_pal.pages.size() - 1;
 	}
 	ImGui::SameLine();
 	if (ImGui::Button("Remove", btnSz)) {
-		std::ignore = undoStack()->push(ox::make_unique<RemovePageCommand>(m_pal, m_page));
+		undoStack()->push(ox::make_unique<RemovePageCommand>(m_pal, m_page));
 		m_page = std::min(m_page, m_pal.pages.size() - 1);
 	}
 	ImGui::SameLine();
 	if (ImGui::Button("Duplicate", btnSz)) {
-		std::ignore = undoStack()->push(ox::make_unique<DuplicatePageCommand>(m_pal, m_page, m_pal.pages.size()));
+		undoStack()->push(ox::make_unique<DuplicatePageCommand>(m_pal, m_page, m_pal.pages.size()));
 	}
 	ImGui::BeginTable("PageSelect", 2, tableFlags, ImVec2(paneSz.x, paneSz.y - (toolbarHeight + 5)));
 	{
@@ -198,7 +198,7 @@ void PaletteEditorImGui::drawColorEditor() noexcept {
 	ImGui::InputInt("Blue", &b, 1, 5);
 	auto const newColor = color16(r, g, b, a);
 	if (c != newColor) {
-		std::ignore = undoStack()->push(ox::make_unique<UpdateColorCommand>(
+		undoStack()->push(ox::make_unique<UpdateColorCommand>(
 				&m_pal, m_page, static_cast<int>(m_selectedColorRow), c, newColor));
 	}
 }

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

@@ -14,13 +14,12 @@ int AddPageCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::AddPage);
 }
 
-ox::Error AddPageCommand::redo() noexcept {
+void AddPageCommand::redo() noexcept {
 	m_pal.pages.emplace_back();
-	return {};
 }
 
-ox::Error AddPageCommand::undo() noexcept {
-	return m_pal.pages.erase(static_cast<std::size_t>(m_pal.pages.size() - 1)).error;
+void AddPageCommand::undo() noexcept {
+	std::ignore = m_pal.pages.erase(static_cast<std::size_t>(m_pal.pages.size() - 1));
 }
 
 
@@ -38,14 +37,13 @@ int DuplicatePageCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::DuplicatePage);
 }
 
-ox::Error DuplicatePageCommand::redo() noexcept {
+void DuplicatePageCommand::redo() noexcept {
 	m_pal.pages.emplace(m_dstIdx, std::move(m_page));
-	return {};
 }
 
-ox::Error DuplicatePageCommand::undo() noexcept {
+void DuplicatePageCommand::undo() noexcept {
 	m_page = std::move(m_pal.pages[m_dstIdx]);
-	return m_pal.pages.erase(static_cast<std::size_t>(m_dstIdx)).error;
+	std::ignore = m_pal.pages.erase(static_cast<std::size_t>(m_dstIdx));
 }
 
 size_t DuplicatePageCommand::insertIdx() const noexcept {
@@ -62,14 +60,13 @@ int RemovePageCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::RemovePage);
 }
 
-ox::Error RemovePageCommand::redo() noexcept {
+void RemovePageCommand::redo() noexcept {
 	m_page = std::move(m_pal.pages[m_idx]);
-	return m_pal.pages.erase(static_cast<std::size_t>(m_idx)).error;
+	std::ignore = m_pal.pages.erase(static_cast<std::size_t>(m_idx));
 }
 
-ox::Error RemovePageCommand::undo() noexcept {
+void RemovePageCommand::undo() noexcept {
 	m_pal.pages.insert(m_idx, std::move(m_page));
-	return {};
 }
 
 
@@ -84,13 +81,12 @@ int AddColorCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::AddColor);
 }
 
-ox::Error AddColorCommand::redo() noexcept {
+void AddColorCommand::redo() noexcept {
 	m_pal->pages[m_page].insert(static_cast<std::size_t>(m_idx), m_color);
-	return {};
 }
 
-ox::Error AddColorCommand::undo() noexcept {
-	return m_pal->pages[m_page].erase(static_cast<std::size_t>(m_idx)).error;
+void AddColorCommand::undo() noexcept {
+	std::ignore = m_pal->pages[m_page].erase(static_cast<std::size_t>(m_idx));
 }
 
 
@@ -105,13 +101,12 @@ int RemoveColorCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::RemoveColor);
 }
 
-ox::Error RemoveColorCommand::redo() noexcept {
-	return m_pal->pages[m_page].erase(static_cast<std::size_t>(m_idx)).error;
+void RemoveColorCommand::redo() noexcept {
+	std::ignore = m_pal->pages[m_page].erase(static_cast<std::size_t>(m_idx));
 }
 
-ox::Error RemoveColorCommand::undo() noexcept {
+void RemoveColorCommand::undo() noexcept {
 m_pal->pages[m_page].insert(static_cast<std::size_t>(m_idx), m_color);
-	return {};
 }
 
 
@@ -129,11 +124,11 @@ UpdateColorCommand::UpdateColorCommand(
 	//setObsolete(m_oldColor == m_newColor);
 }
 
-bool UpdateColorCommand::mergeWith(UndoCommand const&cmd) noexcept {
-	if (cmd.commandId() != static_cast<int>(PaletteEditorCommandId::UpdateColor)) {
+bool UpdateColorCommand::mergeWith(const UndoCommand *cmd) noexcept {
+	if (cmd->commandId() != static_cast<int>(PaletteEditorCommandId::UpdateColor)) {
 		return false;
 	}
-	auto ucCmd = static_cast<UpdateColorCommand const*>(&cmd);
+	auto ucCmd = static_cast<const UpdateColorCommand*>(cmd);
 	if (m_idx != ucCmd->m_idx) {
 		return false;
 	}
@@ -146,14 +141,12 @@ int UpdateColorCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::UpdateColor);
 }
 
-ox::Error UpdateColorCommand::redo() noexcept {
+void UpdateColorCommand::redo() noexcept {
 	m_pal->pages[m_page][static_cast<std::size_t>(m_idx)] = m_newColor;
-	return {};
 }
 
-ox::Error UpdateColorCommand::undo() noexcept {
+void UpdateColorCommand::undo() noexcept {
 	m_pal->pages[m_page][static_cast<std::size_t>(m_idx)] = m_oldColor;
-	return {};
 }
 
 
@@ -168,14 +161,12 @@ int MoveColorCommand::commandId() const noexcept {
 	return static_cast<int>(PaletteEditorCommandId::MoveColor);
 }
 
-ox::Error MoveColorCommand::redo() noexcept {
+void MoveColorCommand::redo() noexcept {
 	moveColor(static_cast<int>(m_idx), m_offset);
-	return {};
 }
 
-ox::Error MoveColorCommand::undo() noexcept {
+void MoveColorCommand::undo() noexcept {
 	moveColor(static_cast<int>(m_idx) + m_offset, -m_offset);
-	return {};
 }
 
 void MoveColorCommand::moveColor(int idx, int offset) noexcept {

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

@@ -35,9 +35,9 @@ class AddPageCommand: public studio::UndoCommand {
 		[[nodiscard]]
 		int commandId() const noexcept final;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 };
 
@@ -55,9 +55,9 @@ class DuplicatePageCommand: public studio::UndoCommand {
 		[[nodiscard]]
 		int commandId() const noexcept final;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		size_t insertIdx() const noexcept;
@@ -78,9 +78,9 @@ class RemovePageCommand: public studio::UndoCommand {
 		[[nodiscard]]
 		int commandId() const noexcept final;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 };
 
@@ -99,9 +99,9 @@ class AddColorCommand: public studio::UndoCommand {
 		[[nodiscard]]
 		int commandId() const noexcept override;
 
-		ox::Error redo() noexcept override;
+		void redo() noexcept override;
 
-		ox::Error undo() noexcept override;
+		void undo() noexcept override;
 
 };
 
@@ -120,9 +120,9 @@ class RemoveColorCommand: public studio::UndoCommand {
 		[[nodiscard]]
 		int commandId() const noexcept override;
 
-		ox::Error redo() noexcept override;
+		void redo() noexcept override;
 
-		ox::Error undo() noexcept override;
+		void undo() noexcept override;
 
 };
 
@@ -140,14 +140,14 @@ class UpdateColorCommand: public studio::UndoCommand {
 		~UpdateColorCommand() noexcept override = default;
 
 		[[nodiscard]]
-		bool mergeWith(const UndoCommand &cmd) noexcept final;
+		bool mergeWith(const UndoCommand *cmd) noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 };
 
@@ -167,9 +167,9 @@ class MoveColorCommand: public studio::UndoCommand {
 		int commandId() const noexcept override;
 
 	public:
-		ox::Error redo() noexcept override;
+		void redo() noexcept override;
 
-		ox::Error undo() noexcept override;
+		void undo() noexcept override;
 
 	private:
 		void moveColor(int idx, int offset) noexcept;

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

@@ -24,7 +24,7 @@ AddSubSheetCommand::AddSubSheetCommand(
 	}
 }
 
-ox::Error AddSubSheetCommand::redo() noexcept {
+void AddSubSheetCommand::redo() noexcept {
 	auto &parent = getSubSheet(m_img, m_parentIdx);
 	if (m_addedSheets.size() < 2) {
 		auto i = parent.subsheets.size();
@@ -35,10 +35,9 @@ ox::Error AddSubSheetCommand::redo() noexcept {
 		parent.columns = 0;
 		parent.subsheets.emplace_back(m_img.idIt++, "Subsheet 1", 1, 1, m_img.bpp);
 	}
-	return {};
 }
 
-ox::Error AddSubSheetCommand::undo() noexcept {
+void AddSubSheetCommand::undo() noexcept {
 	auto &parent = getSubSheet(m_img, m_parentIdx);
 	if (parent.subsheets.size() == 2) {
 		auto s = parent.subsheets[0];
@@ -48,10 +47,9 @@ ox::Error AddSubSheetCommand::undo() noexcept {
 		parent.subsheets.clear();
 	} else {
 		for (auto idx = m_addedSheets.rbegin(); idx != m_addedSheets.rend(); ++idx) {
-			oxReturnError(rmSubSheet(m_img, *idx));
+			oxLogError(rmSubSheet(m_img, *idx));
 		}
 	}
-	return {};
 }
 
 int AddSubSheetCommand::commandId() const noexcept {

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

@@ -17,9 +17,9 @@ class AddSubSheetCommand: public TileSheetCommand {
 	public:
 		AddSubSheetCommand(TileSheet &img, TileSheet::SubSheetIdx parentIdx) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -41,20 +41,18 @@ CutPasteCommand::CutPasteCommand(
 	}
 }
 
-ox::Error CutPasteCommand::redo() noexcept {
+void CutPasteCommand::redo() noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	for (const auto &c : m_changes) {
 		setPixel(subsheet, m_img.bpp, c.idx, static_cast<uint8_t>(c.newPalIdx));
 	}
-	return {};
 }
 
-ox::Error CutPasteCommand::undo() noexcept {
+void CutPasteCommand::undo() noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	for (const auto &c : m_changes) {
 		setPixel(subsheet, m_img.bpp, c.idx, static_cast<uint8_t>(c.oldPalIdx));
 	}
-	return {};
 }
 
 int CutPasteCommand::commandId() const noexcept {

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

@@ -69,9 +69,9 @@ class CutPasteCommand: public TileSheetCommand {
 				ox::Point const&dstEnd,
 				TileSheetClipboard const&cb) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -28,7 +28,7 @@ core::DeleteTilesCommand::DeleteTilesCommand(
 	}
 }
 
-ox::Error core::DeleteTilesCommand::redo() noexcept {
+void core::DeleteTilesCommand::redo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
 	auto srcPos = m_deletePos + m_deleteSz;
@@ -37,10 +37,9 @@ ox::Error core::DeleteTilesCommand::redo() noexcept {
 	const auto dst2 = p.data() + (p.size() - m_deleteSz);
 	ox::memmove(dst1, src, p.size() - srcPos);
 	ox::memset(dst2, 0, m_deleteSz * sizeof(decltype(p[0])));
-	return {};
 }
 
-ox::Error DeleteTilesCommand::undo() noexcept {
+void DeleteTilesCommand::undo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
 	const auto src = p.data() + m_deletePos;
@@ -49,7 +48,6 @@ ox::Error DeleteTilesCommand::undo() noexcept {
 	const auto sz = p.size() - m_deletePos - m_deleteSz;
 	ox::memmove(dst1, src, sz);
 	ox::memcpy(dst2, m_deletedPixels.data(), m_deletedPixels.size());
-	return {};
 }
 
 int DeleteTilesCommand::commandId() const noexcept {

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

@@ -23,9 +23,9 @@ class DeleteTilesCommand: public TileSheetCommand {
 				std::size_t tileIdx,
 				std::size_t tileCnt) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -56,20 +56,18 @@ bool DrawCommand::append(const ox::Vector<std::size_t> &idxList) noexcept {
 	return out;
 }
 
-ox::Error DrawCommand::redo() noexcept {
+void DrawCommand::redo() noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	for (const auto &c : m_changes) {
 		setPixel(subsheet, m_img.bpp, c.idx, static_cast<uint8_t>(m_palIdx));
 	}
-	return {};
 }
 
-ox::Error DrawCommand::undo() noexcept {
+void DrawCommand::undo() noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	for (const auto &c : m_changes) {
 		setPixel(subsheet, m_img.bpp, c.idx, static_cast<uint8_t>(c.oldPalIdx));
 	}
-	return {};
 }
 
 int DrawCommand::commandId() const noexcept {

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

@@ -40,9 +40,9 @@ class DrawCommand: public TileSheetCommand {
 
 		bool append(const ox::Vector<std::size_t> &idxList) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -28,7 +28,7 @@ core::InsertTilesCommand::InsertTilesCommand(
 	}
 }
 
-ox::Error InsertTilesCommand::redo() noexcept {
+void InsertTilesCommand::redo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
 	auto dstPos = m_insertPos + m_insertCnt;
@@ -36,10 +36,9 @@ ox::Error InsertTilesCommand::redo() noexcept {
 	const auto src = p.data() + m_insertPos;
 	ox::memmove(dst, src, p.size() - dstPos);
 	ox::memset(src, 0, m_insertCnt * sizeof(decltype(p[0])));
-	return {};
 }
 
-ox::Error InsertTilesCommand::undo() noexcept {
+void InsertTilesCommand::undo() noexcept {
 	auto &s = getSubSheet(m_img, m_idx);
 	auto &p = s.pixels;
 	const auto srcIdx = m_insertPos + m_insertCnt;
@@ -49,7 +48,6 @@ ox::Error InsertTilesCommand::undo() noexcept {
 	const auto sz = p.size() - srcIdx;
 	ox::memmove(dst1, src, sz);
 	ox::memcpy(dst2, m_deletedPixels.data(), m_deletedPixels.size());
-	return {};
 }
 
 int InsertTilesCommand::commandId() const noexcept {

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

@@ -23,9 +23,9 @@ class InsertTilesCommand: public TileSheetCommand {
 				std::size_t tileIdx,
 				std::size_t tileCnt) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -16,14 +16,12 @@ core::PaletteChangeCommand::PaletteChangeCommand(
 		m_newPalette(ox::FileAddress(ox::sfmt<ox::IString<43>>("uuid://{}", newPalette))) {
 }
 
-ox::Error PaletteChangeCommand::redo() noexcept {
+void PaletteChangeCommand::redo() noexcept {
 	m_img.defaultPalette = m_newPalette;
-	return {};
 }
 
-ox::Error PaletteChangeCommand::undo() noexcept {
+void PaletteChangeCommand::undo() noexcept {
 	m_img.defaultPalette = m_oldPalette;
-	return {};
 }
 
 int PaletteChangeCommand::commandId() const noexcept {

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

@@ -21,9 +21,9 @@ class PaletteChangeCommand: public TileSheetCommand {
 				TileSheet &img,
 				ox::CRStringView newPalette) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -11,20 +11,19 @@ core::RmSubSheetCommand::RmSubSheetCommand(TileSheet &img, TileSheet::SubSheetId
 		m_idx(std::move(idx)),
 		m_parentIdx(m_idx) {
 	m_parentIdx.pop_back();
+	auto &parent = getSubSheet(m_img, m_parentIdx);
+	m_sheet = parent.subsheets[*m_idx.back().value];
 }
 
-ox::Error RmSubSheetCommand::redo() noexcept {
+void RmSubSheetCommand::redo() noexcept {
 	auto &parent = getSubSheet(m_img, m_parentIdx);
-	m_sheet = std::move(parent.subsheets[*m_idx.back().value]);
-	oxReturnError(parent.subsheets.erase(*m_idx.back().value).error);
-	return {};
+	oxLogError(parent.subsheets.erase(*m_idx.back().value).error);
 }
 
-ox::Error RmSubSheetCommand::undo() noexcept {
+void RmSubSheetCommand::undo() noexcept {
 	auto &parent = getSubSheet(m_img, m_parentIdx);
-	auto const i = *m_idx.back().value;
-	parent.subsheets.insert(i, std::move(m_sheet));
-	return {};
+	auto i = *m_idx.back().value;
+	parent.subsheets.insert(i, m_sheet);
 }
 
 int RmSubSheetCommand::commandId() const noexcept {

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

@@ -18,9 +18,9 @@ class RmSubSheetCommand: public TileSheetCommand {
 	public:
 		RmSubSheetCommand(TileSheet &img, TileSheet::SubSheetIdx idx) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -20,17 +20,17 @@ core::UpdateSubSheetCommand::UpdateSubSheetCommand(
 		m_newRows(rows) {
 }
 
-ox::Error UpdateSubSheetCommand::redo() noexcept {
+void UpdateSubSheetCommand::redo() noexcept {
 	auto &sheet = getSubSheet(m_img, m_idx);
 	sheet.name = m_newName;
-	oxLogError(resizeSubsheet(sheet, m_img.bpp, {m_newCols, m_newRows}));
-	return {};
+	sheet.columns = m_newCols;
+	sheet.rows = m_newRows;
+	oxLogError(setPixelCount(sheet, m_img.bpp, static_cast<std::size_t>(PixelsPerTile * m_newCols * m_newRows)));
 }
 
-ox::Error UpdateSubSheetCommand::undo() noexcept {
+void UpdateSubSheetCommand::undo() noexcept {
 	auto &sheet = getSubSheet(m_img, m_idx);
 	sheet = m_sheet;
-	return {};
 }
 
 int UpdateSubSheetCommand::commandId() const noexcept {

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

@@ -25,9 +25,9 @@ class UpdateSubSheetCommand: public TileSheetCommand {
 				int cols,
 				int rows) noexcept;
 
-		ox::Error redo() noexcept final;
+		void redo() noexcept final;
 
-		ox::Error undo() noexcept final;
+		void undo() noexcept final;
 
 		[[nodiscard]]
 		int commandId() const noexcept final;

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

@@ -105,10 +105,6 @@ void TileSheetEditorImGui::paste() {
 	m_model.paste();
 }
 
-bool TileSheetEditorImGui::acceptsClipboardPayload() const noexcept {
-	return m_model.acceptsClipboardPayload();
-}
-
 void TileSheetEditorImGui::keyStateChanged(turbine::Key key, bool down) {
 	if (!down) {
 		return;
@@ -122,18 +118,18 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key key, bool down) {
 	if (!popupOpen) {
 		auto const colorCnt = pal.pages[m_model.palettePage()].size();
 		if (key == turbine::Key::Alpha_D) {
-			m_tool = TileSheetTool::Draw;
+			m_tool = Tool::Draw;
 			setCopyEnabled(false);
 			setCutEnabled(false);
 			setPasteEnabled(false);
 			m_model.clearSelection();
 		} else if (key == turbine::Key::Alpha_S) {
-			m_tool = TileSheetTool::Select;
+			m_tool = Tool::Select;
 			setCopyEnabled(true);
 			setCutEnabled(true);
 			setPasteEnabled(true);
 		} else if (key == turbine::Key::Alpha_F) {
-			m_tool = TileSheetTool::Fill;
+			m_tool = Tool::Fill;
 			setCopyEnabled(false);
 			setCutEnabled(false);
 			setPasteEnabled(false);
@@ -177,17 +173,17 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 		ImGui::BeginChild("ToolBox", ImVec2(m_palViewWidth - 24, 30), true);
 		{
 			auto const btnSz = ImVec2(45, 14);
-			if (ImGui::Selectable("Select", m_tool == TileSheetTool::Select, 0, btnSz)) {
-				m_tool = TileSheetTool::Select;
+			if (ImGui::Selectable("Select", m_tool == Tool::Select, 0, btnSz)) {
+				m_tool = Tool::Select;
 			}
 			ImGui::SameLine();
-			if (ImGui::Selectable("Draw", m_tool == TileSheetTool::Draw, 0, btnSz)) {
-				m_tool = TileSheetTool::Draw;
+			if (ImGui::Selectable("Draw", m_tool == Tool::Draw, 0, btnSz)) {
+				m_tool = Tool::Draw;
 				m_model.clearSelection();
 			}
 			ImGui::SameLine();
-			if (ImGui::Selectable("Fill", m_tool == TileSheetTool::Fill, 0, btnSz)) {
-				m_tool = TileSheetTool::Fill;
+			if (ImGui::Selectable("Fill", m_tool == Tool::Fill, 0, btnSz)) {
+				m_tool = Tool::Fill;
 				m_model.clearSelection();
 			}
 		}
@@ -374,16 +370,16 @@ void TileSheetEditorImGui::drawTileSheet(ox::Vec2 const&fbSize) noexcept {
 		if (io.MouseDown[0] && m_prevMouseDownPos != mousePos) {
 			m_prevMouseDownPos = mousePos;
 			switch (m_tool) {
-				case TileSheetTool::Draw:
+				case Tool::Draw:
 					m_view.clickDraw(fbSize, clickPos(winPos, mousePos));
 					break;
-				case TileSheetTool::Fill:
+				case Tool::Fill:
 					m_view.clickFill(fbSize, clickPos(winPos, mousePos));
 					break;
-				case TileSheetTool::Select:
+				case Tool::Select:
 					m_view.clickSelect(fbSize, clickPos(winPos, mousePos));
 					break;
-				case TileSheetTool::None:
+				case Tool::None:
 					break;
 			}
 		}
@@ -400,7 +396,7 @@ void TileSheetEditorImGui::drawTileSheet(ox::Vec2 const&fbSize) noexcept {
 	}
 	if (io.MouseReleased[0]) {
 		m_prevMouseDownPos = {-1, -1};
-		m_view.releaseMouseButton(m_tool);
+		m_view.releaseMouseButton();
 	}
 }
 

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

@@ -16,6 +16,13 @@
 
 namespace nostalgia::core {
 
+enum class Tool {
+	None,
+	Draw,
+	Fill,
+	Select,
+};
+
 class TileSheetEditorImGui: public studio::Editor {
 
 	private:
@@ -64,7 +71,7 @@ class TileSheetEditorImGui: public studio::Editor {
 		TileSheetEditorModel &m_model;
 		float m_palViewWidth = 300;
 		ox::Vec2 m_prevMouseDownPos;
-		TileSheetTool m_tool = TileSheetTool::Draw;
+		Tool m_tool = Tool::Draw;
 
 	public:
 		TileSheetEditorImGui(studio::StudioContext &sctx, ox::CRStringView path);
@@ -79,9 +86,6 @@ class TileSheetEditorImGui: public studio::Editor {
 
 		void paste() override;
 
-		[[nodiscard]]
-		bool acceptsClipboardPayload() const noexcept override;
-
 		void keyStateChanged(turbine::Key key, bool down) override;
 
 		void draw(studio::StudioContext&) noexcept override;

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

@@ -55,63 +55,55 @@ TileSheetEditorModel::TileSheetEditorModel(studio::StudioContext &sctx, ox::Stri
 }
 
 void TileSheetEditorModel::cut() {
-	if (!m_selection) {
-		return;
-	}
 	TileSheetClipboard blankCb;
 	auto cb = ox::make_unique<TileSheetClipboard>();
-	auto const&s = activeSubSheet();
-	iterateSelectionRows(*m_selection, [&](int x, int y) {
-		auto pt = ox::Point{x, y};
-		auto const idx = core::idx(s, pt);
-		auto const c = getPixel(s, m_img.bpp, idx);
-		pt -= m_selection->a;
+	const auto &s = activeSubSheet();
+	for (int y = m_selectionBounds.y; y <= m_selectionBounds.y2(); ++y) {
+		for (int x = m_selectionBounds.x; x <= m_selectionBounds.x2(); ++x) {
+			auto pt = ox::Point(x, y);
+			const auto idx = core::idx(s, pt);
+			const auto c = getPixel(s, m_img.bpp, idx);
+			pt.x -= m_selectionBounds.x;
+			pt.y -= m_selectionBounds.y;
 			cb->addPixel(pt, c);
 			blankCb.addPixel(pt, 0);
-	});
-	auto const pt1 = m_selection->a;
-	auto const pt2 = ox::Point{s.columns * TileWidth, s.rows * TileHeight};
+		}
+	}
+	const auto pt1 = m_selectionOrigin == ox::Point(-1, -1) ? ox::Point(0, 0) : m_selectionOrigin;
+	const auto pt2 = ox::Point(s.columns * TileWidth, s.rows * TileHeight);
 	turbine::setClipboardObject(m_tctx, std::move(cb));
 	pushCommand(ox::make<CutPasteCommand>(CommandId::Cut, m_img, m_activeSubsSheetIdx, pt1, pt2, blankCb));
 }
 
 void TileSheetEditorModel::copy() {
-	if (!m_selection) {
-		return;
-	}
 	auto cb = ox::make_unique<TileSheetClipboard>();
-	iterateSelectionRows(*m_selection, [&](int x, int y) {
-		auto pt = ox::Point{x, y};
+	for (int y = m_selectionBounds.y; y <= m_selectionBounds.y2(); ++y) {
+		for (int x = m_selectionBounds.x; x <= m_selectionBounds.x2(); ++x) {
+			auto pt = ox::Point(x, y);
 			const auto &s = activeSubSheet();
 			const auto idx = core::idx(s, pt);
 			const auto c = getPixel(s, m_img.bpp, idx);
-		pt -= m_selection->a;
+			pt.x -= m_selectionBounds.x;
+			pt.y -= m_selectionBounds.y;
 			cb->addPixel(pt, c);
-	});
+		}
+	}
 	turbine::setClipboardObject(m_tctx, std::move(cb));
 }
 
 void TileSheetEditorModel::paste() {
-	if (!m_selection) {
-		return;
-	}
 	auto [cb, err] = turbine::getClipboardObject<TileSheetClipboard>(m_tctx);
 	if (err) {
 		oxLogError(err);
 		oxErrf("Could not read clipboard: {}", toStr(err));
 		return;
 	}
-	auto const&s = activeSubSheet();
-	auto const pt1 = m_selection->a;
-	auto const pt2 = ox::Point{s.columns * TileWidth, s.rows * TileHeight};
+	const auto &s = activeSubSheet();
+	const auto pt1 = m_selectionOrigin == ox::Point(-1, -1) ? ox::Point(0, 0) : m_selectionOrigin;
+	const auto pt2 = ox::Point(s.columns * TileWidth, s.rows * TileHeight);
 	pushCommand(ox::make<CutPasteCommand>(CommandId::Paste, m_img, m_activeSubsSheetIdx, pt1, pt2, *cb));
 }
 
-bool TileSheetEditorModel::acceptsClipboardPayload() const noexcept {
-	auto const cb = getClipboardObject<TileSheetClipboard>(m_tctx);
-	return cb.ok();
-}
-
 ox::StringView TileSheetEditorModel::palPath() const noexcept {
 	auto [path, err] = m_img.defaultPalette.getPath();
 	if (err) {
@@ -214,26 +206,30 @@ void TileSheetEditorModel::fill(ox::Point const&pt, int palIdx) noexcept {
 }
 
 void TileSheetEditorModel::select(ox::Point const&pt) noexcept {
-	if (m_selTracker.updateCursorPoint(pt)) {
-		m_selection.emplace(m_selTracker.selection());
+	if (!m_selectionOngoing) {
+		m_selectionOrigin = pt;
+		m_selectionOngoing = true;
+		m_selectionBounds = {pt, pt};
+		m_updated = true;
+	} else if (m_selectionBounds.pt2() != pt) {
+		m_selectionBounds = {m_selectionOrigin, pt};
 		m_updated = true;
 	}
 }
 
 void TileSheetEditorModel::completeSelection() noexcept {
-	if (m_selTracker.selectionOngoing()) {
-		m_selTracker.finishSelection();
-		m_selection.emplace(m_selTracker.selection());
-		auto&pt = m_selection->b;
+	m_selectionOngoing = false;
 	auto &s = activeSubSheet();
-		pt.x = ox::min(s.columns * TileWidth - 1, pt.x);
-		pt.y = ox::min(s.rows * TileHeight - 1, pt.y);
-	}
+	auto pt = m_selectionBounds.pt2();
+	pt.x = ox::min(s.columns * TileWidth, pt.x);
+	pt.y = ox::min(s.rows * TileHeight, pt.y);
+	m_selectionBounds.setPt2(pt);
 }
 
 void TileSheetEditorModel::clearSelection() noexcept {
 	m_updated = true;
-	m_selection.reset();
+	m_selectionOrigin = {-1, -1};
+	m_selectionBounds = {{-1, -1}, {-1, -1}};
 }
 
 bool TileSheetEditorModel::updated() const noexcept {
@@ -270,9 +266,9 @@ ox::Error TileSheetEditorModel::saveFile() noexcept {
 }
 
 bool TileSheetEditorModel::pixelSelected(std::size_t idx) const noexcept {
-	auto const&s = activeSubSheet();
-	auto const pt = idxToPt(static_cast<int>(idx), s.columns);
-	return m_selection && m_selection->contains(pt);
+	const auto &s = activeSubSheet();
+	const auto pt = idxToPt(static_cast<int>(idx), s.columns);
+	return m_selectionBounds.contains(pt);
 }
 
 void TileSheetEditorModel::getFillPixels(bool *pixels, ox::Point const&pt, int oldColor) const noexcept {
@@ -309,7 +305,7 @@ void TileSheetEditorModel::getFillPixels(bool *pixels, ox::Point const&pt, int o
 }
 
 void TileSheetEditorModel::pushCommand(studio::UndoCommand *cmd) noexcept {
-	std::ignore = m_undoStack.push(ox::UPtr<studio::UndoCommand>(cmd));
+	m_undoStack.push(ox::UPtr<studio::UndoCommand>(cmd));
 	m_ongoingDrawCommand = dynamic_cast<DrawCommand*>(cmd);
 	m_updated = true;
 }

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

@@ -33,9 +33,10 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		size_t m_palettePage{};
 		studio::UndoStack &m_undoStack;
 		class DrawCommand *m_ongoingDrawCommand = nullptr;
-		studio::SelectionTracker m_selTracker;
-		ox::Optional<studio::Selection> m_selection;
 		bool m_updated = false;
+		bool m_selectionOngoing = false;
+		ox::Point m_selectionOrigin = {-1, -1};
+		ox::Bounds m_selectionBounds = {{-1, -1}, {-1, -1}};
 
 	public:
 		TileSheetEditorModel(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack);
@@ -48,9 +49,6 @@ class TileSheetEditorModel: public ox::SignalHandler {
 
 		void paste();
 
-		[[nodiscard]]
-		bool acceptsClipboardPayload() const noexcept;
-
 		[[nodiscard]]
 		constexpr TileSheet const&img() const noexcept;
 

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

@@ -84,18 +84,9 @@ void TileSheetEditorView::clickFill(ox::Vec2 const&paneSize, ox::Vec2 const&clic
 	m_model.fill(pt, static_cast<int>(m_palIdx));
 }
 
-void TileSheetEditorView::releaseMouseButton(TileSheetTool tool) noexcept {
-	switch (tool) {
-		case TileSheetTool::Draw:
+void TileSheetEditorView::releaseMouseButton() noexcept {
 	m_model.endDrawCommand();
-			break;
-		case TileSheetTool::Select:
 	m_model.completeSelection();
-			break;
-		case TileSheetTool::Fill:
-		case TileSheetTool::None:
-			break;
-	}
 }
 
 void TileSheetEditorView::resizeView(ox::Vec2 const&sz) noexcept {

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

@@ -18,8 +18,7 @@
 
 namespace nostalgia::core {
 
-enum class TileSheetTool {
-	None,
+enum class TileSheetTool: int {
 	Select,
 	Draw,
 	Fill,
@@ -34,8 +33,6 @@ constexpr auto toString(TileSheetTool t) noexcept {
 			return "Draw";
 		case TileSheetTool::Fill:
 			return "Fill";
-		case TileSheetTool::None:
-			return "None";
 	}
 	return "";
 }
@@ -69,7 +66,7 @@ class TileSheetEditorView: public ox::SignalHandler {
 
 		void clickFill(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;
 
-		void releaseMouseButton(TileSheetTool tool) noexcept;
+		void releaseMouseButton() noexcept;
 
 		void scrollV(ox::Vec2 const&paneSz, float wheel, bool zoomMod) noexcept;
 

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

@@ -139,7 +139,10 @@ void TileSheetPixels::setBufferObjects(ox::Vec2 const&paneSize) noexcept {
 			return;
 		}
 		if (m_model.pixelSelected(i)) {
-			color = applySelectionColor(color);
+			auto const r = red16(color) / 2;
+			auto const g = (green16(color) + 20) / 2;
+			auto const b = (blue16(color) + 31) / 2;
+			color = color16(r, g, b);
 		}
 		setPixelBufferObject(paneSize, static_cast<unsigned>(i * VertexVboRows), fx, fy, color, vbo, ebo);
 	});

src/nostalgia/modules/core/src/tilesheet.cpp

@@ -106,8 +106,8 @@ uint8_t getPixel(TileSheet::SubSheet const&ss, int8_t pBpp, ox::Point const&pt)
 	return getPixel(ss, pBpp, idx);
 }
 
-static void setPixel(ox::Vector<uint8_t> &pixels, int8_t pBpp, uint64_t idx, uint8_t palIdx) noexcept {
-	auto &pixel = pixels[static_cast<std::size_t>(idx / 2)];
+void setPixel(TileSheet::SubSheet &ss, int8_t pBpp, uint64_t idx, uint8_t palIdx) noexcept {
+	auto &pixel = ss.pixels[static_cast<std::size_t>(idx / 2)];
 	if (pBpp == 4) {
 		if (idx & 1) {
 			pixel = static_cast<uint8_t>((pixel & 0b0000'1111) | (palIdx << 4));
@@ -119,59 +119,29 @@ static void setPixel(ox::Vector<uint8_t> &pixels, int8_t pBpp, uint64_t idx, uin
 	}
 }
 
-void setPixel(TileSheet::SubSheet &ss, int8_t pBpp, uint64_t idx, uint8_t palIdx) noexcept {
-	setPixel(ss.pixels, pBpp, idx, palIdx);
-}
-
-static void setPixel(ox::Vector<uint8_t> &pixels, int columns, int8_t pBpp, ox::Point const&pt, uint8_t palIdx) noexcept {
-	const auto idx = ptToIdx(pt, columns);
-	setPixel(pixels, pBpp, idx, palIdx);
-}
-
 void setPixel(TileSheet::SubSheet &ss, int8_t pBpp, ox::Point const&pt, uint8_t palIdx) noexcept {
 	const auto idx = ptToIdx(pt, ss.columns);
 	setPixel(ss, pBpp, idx, palIdx);
 }
 
-static ox::Error setPixelCount(ox::Vector<uint8_t> &pixels, int8_t pBpp, std::size_t cnt) noexcept {
+ox::Error setPixelCount(TileSheet::SubSheet &ss, int8_t pBpp, std::size_t cnt) noexcept {
 	switch (pBpp) {
 		case 4:
-			pixels.resize(cnt / 2);
+			ss.pixels.resize(cnt / 2);
 			return OxError(0);
 		case 8:
-			pixels.resize(cnt);
+			ss.pixels.resize(cnt);
 			return OxError(0);
 		default:
 			return OxError(1, "Invalid pBpp used for TileSheet::SubSheet::setPixelCount");
 	}
 }
 
-ox::Error setPixelCount(TileSheet::SubSheet &ss, int8_t pBpp, std::size_t cnt) noexcept {
-	return setPixelCount(ss.pixels, pBpp, cnt);
-}
-
 unsigned pixelCnt(TileSheet::SubSheet const&ss, int8_t pBpp) noexcept {
 	const auto pixelsSize = static_cast<unsigned>(ss.pixels.size());
 	return pBpp == 4 ? pixelsSize * 2 : pixelsSize;
 }
 
-ox::Error resizeSubsheet(TileSheet::SubSheet &ss, int8_t pBpp, ox::Size const&sz) noexcept {
-	ox::Vector<uint8_t> out;
-	oxReturnError(setPixelCount(out, pBpp, static_cast<size_t>(sz.width * sz.height) * PixelsPerTile));
-	auto const w = sz.width * TileWidth;
-	auto const h = sz.height * TileHeight;
-	for (auto x = 0; x < w; ++x) {
-		for (auto y = 0; y < h; ++y) {
-			auto const palIdx = getPixel(ss, pBpp, {x, y});
-			setPixel(out, sz.width, pBpp, {x, y}, palIdx);
-		}
-	}
-	ss.columns = sz.width;
-	ss.rows = sz.height;
-	ss.pixels = std::move(out);
-	return {};
-}
-
 ox::Result<ox::StringView> getNameFor(TileSheet::SubSheet const&ss, SubSheetId pId) noexcept {
 	if (ss.id == pId) {
 		return ox::StringView(ss.name);

src/nostalgia/modules/scene/src/studio/sceneeditor-imgui.cpp

@@ -50,6 +50,7 @@ void SceneEditorImGui::onActivated() noexcept {
 ox::Error SceneEditorImGui::saveItem() noexcept {
 	const auto sctx = applicationData<studio::StudioContext>(m_ctx);
 	oxReturnError(sctx->project->writeObj(itemPath(), m_editor.scene()));
+	oxReturnError(keelCtx(m_ctx).assetManager.setAsset(itemPath(), m_editor.scene()));
 	return {};
 }
 

src/nostalgia/studio/CMakeLists.txt

@@ -11,7 +11,7 @@ target_link_libraries(
 
 target_compile_definitions(
 	NostalgiaStudio PUBLIC
-		OLYMPIC_APP_VERSION="dev build"
+		OLYMPIC_APP_VERSION="d2024.05.0"
 )
 
 install(

src/olympic/keel/include/keel/assetmanager.hpp

@@ -4,10 +4,6 @@
 
 #pragma once
 
-#ifndef OX_BARE_METAL
-#include <functional>
-#endif
-
 #include <ox/event/signal.hpp>
 #include <ox/fs/fs.hpp>
 #include <ox/model/typenamecatcher.hpp>
@@ -182,11 +178,9 @@ constexpr AssetRef<T>::AssetRef(AssetRef &&h) noexcept: m_ctr(h.m_ctr) {
 	h.m_ctr = nullptr;
 }
 
-class Context;
-
 class AssetManager {
 	private:
-		class AssetTypeManagerBase: public ox::SignalHandler {
+		class AssetTypeManagerBase {
 			public:
 				virtual ~AssetTypeManagerBase() = default;
 
@@ -195,45 +189,36 @@ class AssetManager {
 
 		template<typename T>
 		class AssetTypeManager: public AssetTypeManagerBase {
-			public:
-				using Loader = std::function<ox::Result<T>(ox::StringView assetId)>;
 			private:
-				Loader m_loader{};
 				ox::HashMap<ox::String, ox::UPtr<AssetContainer<T>>> m_cache;
 
 			public:
-				AssetTypeManager(Loader loader) noexcept: m_loader(loader) {}
-
-				ox::Result<AssetRef<T>> getAsset(ox::StringView const assetId) const noexcept {
-					oxRequire(out, m_cache.at(assetId));
-					if (!out || !*out) {
-						return OxError(1, "asset is null");
-					}
-					return AssetRef<T>(out->get());
+				ox::Result<AssetRef<T>> getAsset(ox::StringView const&assetId) const noexcept {
+					auto out = m_cache.at(assetId);
+					oxReturnError(out);
+					return AssetRef<T>(out.value->get());
 				}
 
-				ox::Result<AssetRef<T>> loadAsset(ox::StringView const assetId) noexcept {
+				ox::Result<AssetRef<T>> setAsset(ox::StringView const&assetId, T const&obj) noexcept {
 					auto &p = m_cache[assetId];
-					oxRequireM(obj, m_loader(assetId));
 					if (!p) {
-						p = ox::make_unique<AssetContainer<T>>(std::move(obj));
+						p = ox::make_unique<AssetContainer<T>>(obj);
 					} else {
-						p->set(std::move(obj));
+						p->set(obj);
 						p->updated.emit();
 					}
 					return AssetRef<T>(p.get());
 				}
 
-				ox::Error reloadAsset(ox::StringView const assetId) noexcept {
+				ox::Result<AssetRef<T>> setAsset(ox::StringView const&assetId, T &&obj) noexcept {
 					auto &p = m_cache[assetId];
-					oxRequireM(obj, m_loader(assetId));
 					if (!p) {
-						p = ox::make_unique<AssetContainer<T>>(std::move(obj));
+						p = ox::make_unique<AssetContainer<T>>(obj);
 					} else {
 						p->set(std::move(obj));
 						p->updated.emit();
 					}
-					return {};
+					return AssetRef<T>(p.get());
 				}
 
 				void gc() noexcept final {
@@ -247,51 +232,29 @@ class AssetManager {
 		};
 
 		ox::HashMap<ox::String, ox::UPtr<AssetTypeManagerBase>> m_assetTypeManagers;
-		struct FileTracker {
-			ox::Signal<ox::Error(ox::StringView assetId)> updated;
-		};
-		ox::HashMap<ox::String, FileTracker> m_fileTrackers;
 
 		template<typename T>
-		ox::Result<AssetTypeManager<T>*> getTypeManager() noexcept {
-			constexpr auto &typeId = ox::ModelTypeId_v<T>;
-			static_assert(typeId != "", "Types must have TypeName to use AssetManager");
-			auto &am = m_assetTypeManagers[typeId];
-			auto const out = dynamic_cast<AssetTypeManager<T>*>(am.get());
-			if (!out) {
-				return OxError(1, "no AssetTypeManager for type");
+		AssetTypeManager<T> *getTypeManager() noexcept {
+			constexpr auto typeName = ox::requireModelTypeName<T>();
+			static_assert(ox::StringView(typeName) != "", "Types must have TypeName to use AssetManager");
+			auto &am = m_assetTypeManagers[typeName];
+			if (!am) {
+				am = ox::make_unique<AssetTypeManager<T>>();
 			}
-			return out;
+			return dynamic_cast<AssetTypeManager<T>*>(am.get());
 		}
 
 	public:
 		template<typename T>
-		void initTypeManager(auto const&makeLoader, Context &ctx) noexcept {
-			constexpr auto &typeId = ox::ModelTypeId_v<T>;
-			static_assert(typeId != "", "Types must have TypeName to use AssetManager");
-			auto &am = m_assetTypeManagers[typeId];
-			if (!am) {
-				am = ox::make_unique<AssetTypeManager<T>>(makeLoader(ctx));
-			}
-		}
-
-		template<typename T>
-		ox::Result<AssetRef<T>> getAsset(ox::StringView assetId) noexcept {
-			oxRequire(m, getTypeManager<T>());
+		ox::Result<AssetRef<T>> getAsset(ox::CRStringView assetId) noexcept {
+			auto m = getTypeManager<T>();
 			return m->getAsset(assetId);
 		}
 
-		ox::Error reloadAsset(ox::StringView assetId) noexcept {
-			m_fileTrackers[assetId].updated.emit(assetId);
-			return {};
-		}
-
 		template<typename T>
-		ox::Result<AssetRef<T>> loadAsset(ox::StringView assetId) noexcept {
-			oxRequire(m, getTypeManager<T>());
-			oxRequire(out, m->loadAsset(assetId));
-			m_fileTrackers[assetId].updated.connect(m, &AssetTypeManager<T>::reloadAsset);
-			return out;
+		ox::Result<AssetRef<T>> setAsset(ox::CRStringView assetId, T const&obj) noexcept {
+			auto m = getTypeManager<T>();
+			return m->setAsset(assetId, obj);
 		}
 
 		void gc() noexcept {

src/olympic/keel/include/keel/media.hpp

@@ -32,43 +32,14 @@ oxModelEnd()
 ox::Result<std::size_t> getPreloadAddr(keel::Context &ctx, ox::FileAddress const&file) noexcept;
 ox::Result<std::size_t> getPreloadAddr(keel::Context &ctx, ox::CRStringView file) noexcept;
 
-
-void createUuidMapping(Context &ctx, ox::StringView filePath, ox::UUID const&uuid) noexcept;
-
-ox::Error buildUuidMap(Context &ctx) noexcept;
-
-ox::Result<ox::UUID> pathToUuid(Context &ctx, ox::CRStringView path) noexcept;
-
-ox::Result<ox::UUID> getUuid(Context &ctx, ox::FileAddress const&fileAddr) noexcept;
-
-ox::Result<ox::UUID> getUuid(Context &ctx, ox::StringView path) noexcept;
-
-ox::Result<ox::CStringView> getPath(Context &ctx, ox::FileAddress const&fileAddr) noexcept;
-
-ox::Result<ox::CStringView> getPath(Context &ctx, ox::CStringView fileId) noexcept;
-
-constexpr ox::Result<ox::UUID> uuidUrlToUuid(ox::StringView uuidUrl) noexcept {
-	return ox::UUID::fromString(substr(uuidUrl, 7));
-}
-
-ox::Result<ox::CStringView> uuidUrlToPath(Context &ctx, ox::StringView uuid) noexcept;
-
-ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::CRStringView uuid) noexcept;
-
-ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::UUID const&uuid) noexcept;
-
-ox::Error performPackTransforms(Context &ctx, ox::Buffer &clawData) noexcept;
-
 #ifndef OX_BARE_METAL
 
-namespace detail {
 template<typename T>
-constexpr auto makeLoader(Context &ctx) {
-	return [&ctx](ox::StringView assetId) -> ox::Result<T> {
-		ox::StringView path;
-		oxRequire(p, ctx.uuidToPath.at(assetId));
-		path = *p;
-		oxRequire(buff, ctx.rom->read(path));
+ox::Result<keel::AssetRef<T>> readObjFile(
+		keel::Context &ctx,
+		ox::StringView assetId,
+		bool forceLoad) noexcept {
+	constexpr auto readConvert = [](Context &ctx, const ox::Buffer &buff) -> ox::Result<T> {
 		auto [obj, err] = readAsset<T>(buff);
 		if (err) {
 			if (err != ox::Error_ClawTypeVersionMismatch && err != ox::Error_ClawTypeMismatch) {
@@ -78,34 +49,25 @@ constexpr auto makeLoader(Context &ctx) {
 		}
 		return std::move(obj);
 	};
-};
-}
-
-template<typename T>
-ox::Result<keel::AssetRef<T>> readObjFile(
-		keel::Context &ctx,
-		ox::StringView assetId,
-		bool forceLoad) noexcept {
-	ox::UUIDStr uuidStr;
+	ox::StringView path;
 	if (beginsWith(assetId, "uuid://")) {
 		assetId = substr(assetId, 7);
-		oxRequire(p, keel::uuidToPath(ctx, assetId));
+		oxRequire(p, ctx.uuidToPath.at(assetId));
+		path = *p;
 	} else {
-		auto const [uuid, uuidErr] =  getUuid(ctx, assetId);
-		if (!uuidErr) {
-			uuidStr = uuid.toString();
-			assetId = uuidStr;
-		}
+		path = assetId;
 	}
 	if (forceLoad) {
-		ctx.assetManager.initTypeManager<T>(detail::makeLoader<T>, ctx);
-		oxRequire(cached, ctx.assetManager.loadAsset<T>(assetId));
+		oxRequire(buff, ctx.rom->read(path));
+		oxRequire(obj, readConvert(ctx, buff));
+		oxRequire(cached, ctx.assetManager.setAsset(assetId, obj));
 		return cached;
 	} else {
 		auto [cached, err] = ctx.assetManager.getAsset<T>(assetId);
 		if (err) {
-			ctx.assetManager.initTypeManager<T>(detail::makeLoader<T>, ctx);
-			oxReturnError(ctx.assetManager.loadAsset<T>(assetId).moveTo(cached));
+			oxRequire(buff, ctx.rom->read(path));
+			oxRequire(obj, readConvert(ctx, buff));
+			oxReturnError(ctx.assetManager.setAsset(assetId, obj).moveTo(cached));
 		}
 		return cached;
 	}
@@ -127,7 +89,34 @@ ox::Result<keel::AssetRef<T>> readObjNoCache(
 
 #endif
 
-ox::Error reloadAsset(keel::Context &ctx, ox::StringView assetId) noexcept;
+void createUuidMapping(Context &ctx, ox::StringView filePath, ox::UUID const&uuid) noexcept;
+
+ox::Error buildUuidMap(Context &ctx) noexcept;
+
+ox::Result<ox::String> uuidToPath(Context &ctx, ox::CRStringView uuid) noexcept;
+
+ox::Result<ox::String> uuidToPath(Context &ctx, ox::UUID const&uuid) noexcept;
+
+ox::Error performPackTransforms(Context &ctx, ox::Buffer &clawData) noexcept;
+
+template<typename T>
+ox::Result<AssetRef<T>> setAsset(keel::Context &ctx, ox::StringView assetId, T const&asset) noexcept {
+#ifndef OX_BARE_METAL
+	if (assetId.len() == 0) {
+		return OxError(1, "Invalid asset ID");
+	}
+	ox::UUIDStr idStr;
+	if (assetId[0] == '/') {
+		auto const [id, err] = ctx.pathToUuid.at(assetId);
+		oxReturnError(err);
+		idStr = id->toString();
+		assetId = idStr;
+	}
+	return ctx.assetManager.setAsset(assetId, asset);
+#else
+	return OxError(1, "Not supported on this platform");
+#endif
+}
 
 template<typename T>
 ox::Result<keel::AssetRef<T>> readObj(

src/olympic/keel/include/keel/pack.hpp

@@ -86,21 +86,19 @@ ox::Error preloadObj(
 		ox::TypeStore &ts,
 		ox::FileSystem &romFs,
 		ox::Preloader<PlatSpec> &pl,
-		ox::StringView const path) noexcept {
+		ox::CRStringView path) noexcept {
 	// load file
 	oxRequireM(buff, romFs.read(path));
 	oxRequireM(obj, keel::readAsset(ts, buff));
 	if (obj.type()->preloadable) {
+		oxOutf("preloading {} as a {}\n", path, obj.type()->typeName);
 		// preload
-		auto const size = ox::sizeOf<GbaPlatSpec>(&obj);
-		auto const alignment = ox::alignOf<GbaPlatSpec>(obj);
-		oxRequire(a, pl.startAlloc(size, alignment));
+		oxRequire(a, pl.startAlloc(ox::sizeOf<GbaPlatSpec>(&obj), ox::alignOf<GbaPlatSpec>(obj)));
 		auto const err = ox::preload<GbaPlatSpec, ox::ModelObject>(&pl, &obj);
 		oxReturnError(pl.endAlloc());
 		oxReturnError(err);
-		keel::PreloadPtr const p{.preloadAddr = a};
+		keel::PreloadPtr const p{.preloadAddr = static_cast<uint32_t>(a)};
 		oxReturnError(ox::writeMC(p).moveTo(buff));
-		oxOutf("preloaded {} as a {} @ {} to {}\n", path, obj.type()->typeName, a, a + size);
 	} else {
 		// strip the Claw header (it is not needed after preloading) and write back out to dest fs
 		oxReturnError(ox::writeMC(obj).moveTo(buff));

src/olympic/keel/src/media.cpp

@@ -83,72 +83,19 @@ ox::Result<ox::UUID> pathToUuid(Context &ctx, ox::CRStringView path) noexcept {
 #endif
 }
 
-ox::Result<ox::UUID> getUuid(Context &ctx, ox::FileAddress const&fileAddr) noexcept {
-	oxRequire(path, fileAddr.getPath());
-	return getUuid(ctx, path);
-}
-
-ox::Result<ox::UUID> getUuid(Context &ctx, ox::StringView path) noexcept {
-	if (beginsWith(path, "uuid://")) {
-		auto const uuid = substr(path, 7);
-		return ox::UUID::fromString(uuid);
-	} else {
-		return pathToUuid(ctx, path);
-	}
-}
-
-ox::Result<ox::CStringView> getPath(Context &ctx, ox::FileAddress const&fileAddr) noexcept {
-	oxRequire(path, fileAddr.getPath());
-	if (beginsWith(path, "uuid://")) {
-		auto const uuid = substr(path, 7);
+ox::Result<ox::String> uuidToPath(Context &ctx, ox::CRStringView uuid) noexcept {
 #ifndef OX_BARE_METAL
-		oxRequireM(out, ctx.uuidToPath.at(uuid));
-		return ox::CStringView{*out};
-#else
-		return OxError(1, "UUID to path conversion not supported on this platform");
-#endif
-	} else {
-		return ox::CStringView{path};
-	}
-}
-
-ox::Result<ox::CStringView> getPath(Context &ctx, ox::CStringView fileId) noexcept {
-	if (beginsWith(fileId, "uuid://")) {
-		auto const uuid = substr(fileId, 7);
-#ifndef OX_BARE_METAL
-		oxRequireM(out, ctx.uuidToPath.at(uuid));
-		return ox::CStringView{*out};
-#else
-		return OxError(1, "UUID to path conversion not supported on this platform");
-#endif
-	} else {
-		return ox::CStringView{fileId};
-	}
-}
-
-ox::Result<ox::CStringView> uuidUrlToPath(Context &ctx, ox::StringView uuid) noexcept {
-	uuid = substr(uuid, 7);
-#ifndef OX_BARE_METAL
-	oxRequireM(out, ctx.uuidToPath.at(uuid));
-	return ox::CStringView(*out);
+	oxRequire(out, ctx.uuidToPath.at(uuid));
+	return *out;
 #else
 	return OxError(1, "UUID to path conversion not supported on this platform");
 #endif
 }
 
-ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::CRStringView uuid) noexcept {
+ox::Result<ox::String> uuidToPath(Context &ctx, ox::UUID const&uuid) noexcept {
 #ifndef OX_BARE_METAL
-	oxRequireM(out, ctx.uuidToPath.at(uuid));
-	return ox::CStringView(*out);
-#else
-	return OxError(1, "UUID to path conversion not supported on this platform");
-#endif
-}
-
-ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::UUID const&uuid) noexcept {
-#ifndef OX_BARE_METAL
-	oxRequireM(out, ctx.uuidToPath.at(uuid.toString()));
-	return ox::CStringView(*out);
+	oxRequire(out, ctx.uuidToPath.at(uuid.toString()));
+	return *out;
 #else
 	return OxError(1, "UUID to path conversion not supported on this platform");
 #endif
@@ -166,21 +113,6 @@ ox::Error performPackTransforms(Context &ctx, ox::Buffer &clawData) noexcept {
 	return {};
 }
 
-ox::Error reloadAsset(keel::Context &ctx, ox::StringView assetId) noexcept {
-	ox::UUIDStr uuidStr;
-	if (beginsWith(assetId, "uuid://")) {
-		assetId = substr(assetId, 7);
-		oxRequire(p, keel::uuidToPath(ctx, assetId));
-	} else {
-		auto const [uuid, uuidErr] =  getUuid(ctx, assetId);
-		if (!uuidErr) {
-			uuidStr = uuid.toString();
-			assetId = uuidStr;
-		}
-	}
-	return ctx.assetManager.reloadAsset(assetId);
-}
-
 }
 
 #else
@@ -234,10 +166,6 @@ ox::Result<std::size_t> getPreloadAddr(keel::Context &ctx, ox::FileAddress const
 	return static_cast<std::size_t>(p.preloadAddr) + ctx.preloadSectionOffset;
 }
 
-ox::Error reloadAsset(keel::Context&, ox::StringView) noexcept {
-	return OxError(1, "reloadAsset is unsupported on this platform");
-}
-
 }
 
 #endif

src/olympic/keel/src/pack-applib.cpp

@@ -11,7 +11,7 @@
 
 #include <keel/keel.hpp>
 
-static ox::Error writeFileBuff(ox::StringView path, ox::BufferView const buff) noexcept {
+static ox::Error writeFileBuff(ox::StringView path, ox::Buffer const&buff) noexcept {
 	try {
 		std::ofstream f(std::string(toStdStringView(path)), std::ios::binary);
 		f.write(buff.data(), static_cast<intptr_t>(buff.size()));
@@ -39,10 +39,10 @@ static ox::Result<ox::Buffer> readFileBuff(ox::StringView path) noexcept {
 	}
 }
 
-static ox::Error generateTypes(ox::TypeStore &ts) noexcept {
+static ox::Error generateTypes(ox::TypeStore *ts) noexcept {
 	for (auto const mod : keel::modules()) {
 		for (auto gen : mod->types()) {
-			oxReturnError(gen(ts));
+			oxReturnError(gen(*ts));
 		}
 	}
 	return {};
@@ -54,7 +54,7 @@ static ox::Error pack(ox::StringView argSrc, ox::StringView argRomBin, ox::Strin
 	ox::FileSystem32 dst(dstBuff);
 	oxRequire(ctx, keel::init(ox::make_unique<ox::PassThroughFS>(argSrc), "keel-pack"));
 	keel::TypeStore ts(*ctx->rom, ox::sfmt("{}/type_descriptors", projectDataDir));
-	oxReturnError(generateTypes(ts));
+	oxReturnError(generateTypes(&ts));
 	oxReturnError(keel::pack(*ctx, ts, dst));
 	oxRequireM(pl, keel::GbaPreloader::make());
 	oxReturnError(preload(ts, dst, *pl));
@@ -62,13 +62,14 @@ static ox::Error pack(ox::StringView argSrc, ox::StringView argRomBin, ox::Strin
 	// resize buffer
 	oxRequire(dstSize, dst.size());
 	dstBuff.resize(dstSize);
-	// concatenate ROM segments
+
 	oxRequireM(romBuff, readFileBuff(argRomBin));
-	oxOutf("Input exe size: {} bytes\n", romBuff.size());
+	oxReturnError(appendBinary(romBuff, dstBuff, *pl));
+
 	oxOutf("Dest FS size: {} bytes\n", dstSize);
 	oxOutf("Preload buff size: {} bytes\n", pl->buff().size());
-	oxReturnError(appendBinary(romBuff, dstBuff, *pl));
-	oxOutf("Final ROM buff size: {} bytes\n", romBuff.size());
+	oxOutf("ROM buff size: {} bytes\n", romBuff.size());
+
 	oxReturnError(writeFileBuff(argRomBin, romBuff));
 	return {};
 }

src/olympic/keel/src/pack.cpp

@@ -30,11 +30,11 @@ static ox::Error pathToInode(
 	}
 	if (beginsWith(path, "uuid://")) {
 		auto const uuid = ox::substr(path, 7);
-		oxReturnError(keel::uuidToPath(ctx, uuid).to<ox::String>().moveTo(path));
+		oxReturnError(keel::uuidToPath(ctx, uuid).moveTo(path));
 	}
 	oxRequire(s, dest.stat(path));
 	oxReturnError(o.at("type").unwrap()->set(static_cast<int8_t>(ox::FileAddressType::Inode)));
-	oxOutf("\tpath to inode: {} => {}\n", path, s.inode);
+	oxOutf("path to inode: {} => {}\n", path, s.inode);
 	return data.set(2, s.inode);
 }
 
@@ -97,7 +97,6 @@ static ox::Error doTransformations(
 	oxReturnError(keel::performPackTransforms(ctx, buff));
 	// transform FileAddresses
 	oxRequireM(obj, keel::readAsset(ts, buff));
-	oxOutf("transforming {}\n", filePath);
 	oxReturnError(transformFileAddressesObj(ctx, dest, obj));
 	oxReturnError(ox::writeClaw(obj).moveTo(buff));
 	// write file to dest
@@ -144,15 +143,16 @@ static ox::Error copy(
 		if (beginsWith(name, ".")) {
 			continue;
 		}
+		oxOutf("reading {}\n", currentFile);
 		oxRequire(stat, src.stat(currentFile));
 		if (stat.fileType == ox::FileType::Directory) {
 			oxReturnError(dest.mkdir(currentFile, true));
 			oxReturnError(copy(src, dest, currentFile + '/'));
 		} else {
 			// load file
-			oxOutf("copying file: {}\n", currentFile);
 			oxRequireM(buff, src.read(currentFile));
 			// write file to dest
+			oxOutf("writing {}\n", currentFile);
 			oxReturnError(dest.write(currentFile, buff));
 		}
 	}

src/olympic/studio/applib/src/studioapp.cpp

@@ -2,7 +2,6 @@
  * Copyright 2016 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
  */
 
-#include <algorithm>
 #include <filesystem>
 
 #include <imgui.h>
@@ -197,10 +196,10 @@ void StudioUI::drawMenu() noexcept {
 		if (ImGui::BeginMenu("Edit")) {
 			auto undoStack = m_activeEditor ? m_activeEditor->undoStack() : nullptr;
 			if (ImGui::MenuItem("Undo", "Ctrl+Z", false, undoStack && undoStack->canUndo())) {
-				oxLogError(undoStack->undo());
+				undoStack->undo();
 			}
 			if (ImGui::MenuItem("Redo", "Ctrl+Y", false, undoStack && undoStack->canRedo())) {
-				oxLogError(undoStack->redo());
+				undoStack->redo();
 			}
 			ImGui::Separator();
 			if (ImGui::MenuItem("Copy", "Ctrl+C", false, m_activeEditor && m_activeEditor->copyEnabled())) {
@@ -209,7 +208,7 @@ void StudioUI::drawMenu() noexcept {
 			if (ImGui::MenuItem("Cut", "Ctrl+X", false, m_activeEditor && m_activeEditor->cutEnabled())) {
 				m_activeEditor->cut();
 			}
-			if (ImGui::MenuItem("Paste", "Ctrl+V", false, m_activeEditor && m_activeEditor->pasteEnabled())) {
+			if (ImGui::MenuItem("Paste", "Ctrl+V", false, m_activeEditor && m_activeEditor->pasteEnabled()) && m_activeEditor) {
 				m_activeEditor->paste();
 			}
 			ImGui::EndMenu();
@@ -315,14 +314,14 @@ void StudioUI::toggleProjectExplorer() noexcept {
 void StudioUI::redo() noexcept {
 	auto undoStack = m_activeEditor ? m_activeEditor->undoStack() : nullptr;
 	if (undoStack && undoStack->canRedo()) {
-		 oxLogError(m_activeEditor->undoStack()->redo());
+		 m_activeEditor->undoStack()->redo();
 	}
 }
 
 void StudioUI::undo() noexcept {
 	auto undoStack = m_activeEditor ? m_activeEditor->undoStack() : nullptr;
 	if (undoStack && undoStack->canUndo()) {
-		 oxLogError(m_activeEditor->undoStack()->undo());
+		 m_activeEditor->undoStack()->undo();
 	}
 }
 

src/olympic/studio/modlib/include/studio/context.hpp

@@ -22,9 +22,4 @@ struct StudioContext {
 		ui(pUi), tctx(pTctx) {}
 };
 
-[[nodiscard]]
-inline keel::Context &keelCtx(StudioContext &ctx) noexcept {
-	return keelCtx(ctx.tctx);
-}
-
 }

src/olympic/studio/modlib/include/studio/editor.hpp

@@ -43,9 +43,6 @@ class BaseEditor: public Widget {
 
 		virtual void paste();
 
-		[[nodiscard]]
-		virtual bool acceptsClipboardPayload() const noexcept;
-
 		virtual void exportFile();
 
 		virtual void keyStateChanged(turbine::Key key, bool down);
@@ -134,14 +131,14 @@ class Editor: public studio::BaseEditor {
 		[[nodiscard]]
 		UndoStack *undoStack() noexcept final;
 
-		ox::Error pushCommand(ox::UPtr<UndoCommand> &&cmd) noexcept;
+		void pushCommand(ox::UPtr<UndoCommand> &&cmd) noexcept;
 
 		template<typename UC, typename ...Args>
-		ox::Error pushCommand(Args&&... args) noexcept {
+		void pushCommand(Args&&... args) noexcept {
 			try {
-				return m_undoStack.push(ox::make_unique<UC>(ox::forward<Args>(args)...));
+				m_undoStack.push(ox::make_unique<UC>(ox::forward<Args>(args)...));
 			} catch (ox::Exception const&ex) {
-				return ex.toError();
+				oxLogError(ex.toError());
 			}
 		}
 

src/olympic/studio/modlib/include/studio/imguiutil.hpp

@@ -148,19 +148,6 @@ bool BeginPopup(turbine::Context &ctx, ox::CStringView popupName, bool &show, Im
  */
 bool ComboBox(ox::CStringView lbl, ox::SpanView<ox::String> list, size_t &selectedIdx) noexcept;
 
-/**
- *
- * @param lbl
- * @param callback
- * @param selectedIdx
- * @return true if new value selected, false otherwise
- */
-bool ComboBox(
-		ox::CStringView lbl,
-		std::function<ox::CStringView(size_t)> const&f,
-		size_t strCnt,
-		size_t &selectedIdx) noexcept;
-
 bool FileComboBox(
 		ox::CStringView lbl,
 		studio::StudioContext &sctx,

src/olympic/studio/modlib/include/studio/project.hpp

@@ -31,7 +31,7 @@ enum class ProjectEvent {
 constexpr ox::Result<ox::StringView> fileExt(ox::CRStringView path) noexcept {
 	auto const extStart = ox::find(path.crbegin(), path.crend(), '.').offset();
 	if (!extStart) {
-		return OxError(1, "file path does not have valid extension");
+		return OxError(1, "Cannot open a file without valid extension.");
 	}
 	return substr(path, extStart + 1);
 }
@@ -47,7 +47,6 @@ constexpr ox::StringView parentDir(ox::StringView path) noexcept {
 
 class Project {
 	private:
-		ox::SmallMap<ox::String, ox::Optional<ox::ClawFormat>> m_typeFmt;
 		keel::Context &m_ctx;
 		ox::String m_path;
 		ox::String m_projectDataDir;
@@ -76,15 +75,7 @@ class Project {
 		ox::Error writeObj(
 				ox::CRStringView path,
 				T const&obj,
-				ox::ClawFormat fmt) noexcept;
-
-		/**
-		 * Writes a MetalClaw object to the project at the given path.
-		 */
-		template<typename T>
-		ox::Error writeObj(
-				ox::CRStringView path,
-				T const&obj) noexcept;
+				ox::ClawFormat fmt = ox::ClawFormat::Metal) noexcept;
 
 		template<typename T>
 		ox::Result<T> loadObj(ox::CRStringView path) const noexcept;
@@ -124,7 +115,7 @@ class Project {
 		// file.
 		ox::Signal<ox::Error(ox::CRStringView)> fileRecognized;
 		ox::Signal<ox::Error(ox::CRStringView)> fileDeleted;
-		ox::Signal<ox::Error(ox::StringView, ox::UUID)> fileUpdated;
+		ox::Signal<ox::Error(ox::CRStringView)> fileUpdated;
 
 };
 
@@ -139,24 +130,15 @@ ox::Error Project::writeObj(ox::CRStringView path, T const&obj, ox::ClawFormat f
 		oxReturnError(ox::buildTypeDef(&m_typeStore, &obj));
 	}
 	oxRequire(desc, m_typeStore.get<T>());
-	auto const descPath = ox::sfmt("{}/{}", m_typeDescPath, buildTypeId(*desc));
-	auto const descExists = m_fs.exists(descPath);
+	auto const descExists = m_fs.stat(ox::sfmt("{}/{}", m_typeDescPath, buildTypeId(*desc))).error != 0;
 	if (!descExists) {
 		oxReturnError(writeTypeStore());
 	}
-	oxReturnError(keel::reloadAsset(m_ctx, path));
-	oxRequire(uuid, pathToUuid(m_ctx, path));
-	fileUpdated.emit(path, uuid);
+	oxReturnError(keel::setAsset(m_ctx, path, obj));
+	fileUpdated.emit(path);
 	return {};
 }
 
-template<typename T>
-ox::Error Project::writeObj(ox::CRStringView path, T const&obj) noexcept {
-	oxRequire(ext, fileExt(path));
-	auto const fmt = m_typeFmt[ext].or_value(ox::ClawFormat::Metal);
-	return writeObj(path, obj, fmt);
-}
-
 template<typename T>
 ox::Result<T> Project::loadObj(ox::CRStringView path) const noexcept {
 	oxRequire(buff, loadBuff(path));

src/olympic/studio/modlib/include/studio/selectiontracker.hpp

@@ -1,133 +0,0 @@
-
-#pragma once
-
-#include <imgui.h>
-
-#include <ox/std/math.hpp>
-#include <ox/std/point.hpp>
-#include <ox/std/size.hpp>
-#include <ox/std/typetraits.hpp>
-
-namespace studio {
-
-struct Selection {
-	ox::Point a, b;
-	constexpr Selection() noexcept = default;
-	constexpr Selection(ox::Point const&pA, ox::Point const&pB) noexcept: a(pA), b(pB) {}
-	[[nodiscard]]
-	constexpr ox::Size size() const noexcept {
-		return {b.x - a.x, b.y - a.y};
-	}
-	[[nodiscard]]
-	constexpr bool contains(ox::Point const&pt) const noexcept {
-		return a.x <= pt.x && a.y <= pt.y
-		    && b.x >= pt.x && b.y >= pt.y;
-	}
-};
-
-constexpr auto iterateSelection(studio::Selection const&sel, auto const&cb) {
-	constexpr auto retErr = ox::is_same_v<decltype(cb(0, 0)), ox::Error>;
-	for (auto x = sel.a.x; x <= sel.b.x; ++x) {
-		for (auto y = sel.a.y; y <= sel.b.y; ++y) {
-			if constexpr(retErr) {
-				oxReturnError(cb(x, y));
-			} else {
-				cb(x, y);
-			}
-		}
-	}
-	if constexpr(retErr) {
-		return ox::Error{};
-	}
-};
-
-constexpr auto iterateSelectionRows(studio::Selection const&sel, auto const&cb) {
-	constexpr auto retErr = ox::is_same_v<decltype(cb(0, 0)), ox::Error>;
-	for (auto y = sel.a.y; y <= sel.b.y; ++y) {
-		for (auto x = sel.a.x; x <= sel.b.x; ++x) {
-			if constexpr(retErr) {
-				oxReturnError(cb(x, y));
-			} else {
-				cb(x, y);
-			}
-		}
-	}
-	if constexpr(retErr) {
-		return ox::Error{};
-	}
-};
-
-class SelectionTracker {
-	private:
-		bool m_selectionOngoing{};
-		ox::Point m_pointA;
-		ox::Point m_pointB;
-	public:
-		[[nodiscard]]
-		constexpr bool selectionOngoing() const noexcept {
-			return m_selectionOngoing;
-		}
-
-		constexpr void startSelection(ox::Point cursor) noexcept {
-			m_pointA = cursor;
-			m_pointB = cursor;
-			m_selectionOngoing = true;
-		}
-
-		/**
-		 *
-		 * @param cursor
-		 * @param allowStart
-		 * @return true if changed, false otherwise
-		 */
-		constexpr bool updateCursorPoint(ox::Point cursor, bool allowStart = true) noexcept {
-			auto changed = false;
-			if (!m_selectionOngoing && allowStart) {
-				m_pointA = cursor;
-				m_selectionOngoing = true;
-			}
-			if (m_selectionOngoing) {
-				m_pointB = cursor;
-				changed = true;
-			}
-			return changed;
-		}
-
-		constexpr void updateCursorPoint(ox::Vec2 cursor, bool allowStart = true) noexcept {
-			updateCursorPoint(
-					ox::Point{
-							static_cast<int32_t>(cursor.x),
-							static_cast<int32_t>(cursor.y),
-					},
-					allowStart);
-		}
-
-		constexpr void updateCursorPoint(ImVec2 cursor, bool allowStart = true) noexcept {
-			updateCursorPoint(
-					ox::Point{
-						static_cast<int32_t>(cursor.x),
-						static_cast<int32_t>(cursor.y),
-					},
-					allowStart);
-		}
-
-		constexpr void finishSelection() noexcept {
-			m_selectionOngoing = {};
-		}
-
-		[[nodiscard]]
-		constexpr Selection selection() const noexcept {
-			return {
-				{
-					ox::min(m_pointA.x, m_pointB.x),
-					ox::min(m_pointA.y, m_pointB.y),
-				},
-				{
-					ox::max(m_pointA.x, m_pointB.x),
-					ox::max(m_pointA.y, m_pointB.y),
-				},
-			};
-		}
-};
-
-}

src/olympic/studio/modlib/include/studio/studio.hpp

@@ -12,7 +12,6 @@
 #include <studio/itemmaker.hpp>
 #include <studio/popup.hpp>
 #include <studio/project.hpp>
-#include <studio/selectiontracker.hpp>
 #include <studio/task.hpp>
 #include <studio/undocommand.hpp>
 #include <studio/undostack.hpp>

src/olympic/studio/modlib/include/studio/undocommand.hpp

@@ -4,26 +4,16 @@
 
 #pragma once
 
-#include <source_location>
-
-#include <ox/std/error.hpp>
-
 namespace studio {
 
-class NoChangesException: public ox::Exception {
-	public:
-		inline NoChangesException(std::source_location sloc = std::source_location::current()):
-				ox::Exception(sloc.file_name(), sloc.line(), 1, "Command makes no changes.") {}
-};
-
 class UndoCommand {
 	public:
 		virtual ~UndoCommand() noexcept = default;
-		virtual ox::Error redo() noexcept = 0;
-		virtual ox::Error undo() noexcept = 0;
+		virtual void redo() noexcept = 0;
+		virtual void undo() noexcept = 0;
 		[[nodiscard]]
 		virtual int commandId() const noexcept = 0;
-		virtual bool mergeWith(UndoCommand const&cmd) noexcept;
+		virtual bool mergeWith(UndoCommand const*cmd) noexcept;
 };
 
 }

src/olympic/studio/modlib/include/studio/undostack.hpp

@@ -19,11 +19,11 @@ class UndoStack {
 		std::size_t m_stackIdx = 0;
 
 	public:
-		ox::Error push(ox::UPtr<UndoCommand> &&cmd) noexcept;
+		void push(ox::UPtr<UndoCommand> &&cmd) noexcept;
 
-		ox::Error redo() noexcept;
+		void redo() noexcept;
 
-		ox::Error undo() noexcept;
+		void undo() noexcept;
 
 		[[nodiscard]]
 		constexpr bool canRedo() const noexcept {

src/olympic/studio/modlib/src/editor.cpp

@@ -23,10 +23,6 @@ void BaseEditor::copy() {
 void BaseEditor::paste() {
 }
 
-bool BaseEditor::acceptsClipboardPayload() const noexcept {
-	return {};
-}
-
 void BaseEditor::exportFile() {
 }
 
@@ -99,7 +95,7 @@ void BaseEditor::setPasteEnabled(bool v) {
 }
 
 bool BaseEditor::pasteEnabled() const noexcept {
-	return m_pasteEnabled && acceptsClipboardPayload();
+	return m_pasteEnabled;
 }
 
 ox::Error BaseEditor::saveItem() noexcept {
@@ -131,8 +127,8 @@ ox::CStringView Editor::itemDisplayName() const noexcept {
 	return m_itemName;
 }
 
-ox::Error Editor::pushCommand(ox::UPtr<UndoCommand> &&cmd) noexcept {
-	return m_undoStack.push(std::move(cmd));
+void Editor::pushCommand(ox::UPtr<UndoCommand> &&cmd) noexcept {
+	m_undoStack.push(std::move(cmd));
 }
 
 UndoStack *Editor::undoStack() noexcept {

src/olympic/studio/modlib/src/imguiutil.cpp

@@ -100,26 +100,6 @@ bool ComboBox(
 	return out;
 }
 
-bool ComboBox(
-		ox::CStringView lbl,
-		std::function<ox::CStringView(size_t)> const&f,
-		size_t strCnt,
-		size_t &selectedIdx) noexcept {
-	bool out{};
-	auto const first = selectedIdx < strCnt ? f(selectedIdx).c_str() : "";
-	if (ImGui::BeginCombo(lbl.c_str(), first, 0)) {
-		for (auto i = 0u; i < strCnt; ++i) {
-			const auto selected = (selectedIdx == i);
-			if (ImGui::Selectable(f(i).c_str(), selected) && selectedIdx != i) {
-				selectedIdx = i;
-				out = true;
-			}
-		}
-		ImGui::EndCombo();
-	}
-	return out;
-}
-
 bool FileComboBox(
 		ox::CStringView lbl,
 		studio::StudioContext &sctx,

src/olympic/studio/modlib/src/project.cpp

@@ -56,13 +56,9 @@ ox::FileSystem &Project::romFs() noexcept {
 }
 
 ox::Error Project::mkdir(ox::CRStringView path) const noexcept {
-	auto const [stat, err] = m_fs.stat(path);
-	if (err) {
 	oxReturnError(m_fs.mkdir(path, true));
-		fileUpdated.emit(path, {});
-	}
-	return stat.fileType == ox::FileType::Directory ?
-		ox::Error{} : OxError(1, "path exists as normal file");
+	fileUpdated.emit(path);
+	return {};
 }
 
 ox::Result<ox::FileStat> Project::stat(ox::CRStringView path) const noexcept {
@@ -119,9 +115,9 @@ ox::Error Project::writeBuff(ox::CRStringView path, ox::Buffer const&buff) noexc
 	ox::Buffer outBuff;
 	outBuff.reserve(buff.size() + HdrSz);
 	ox::BufferWriter writer(&outBuff);
-	auto const [uuid, err] = pathToUuid(m_ctx, path);
+	auto const [uuid, err] = m_ctx.pathToUuid.at(path);
 	if (!err) {
-		oxReturnError(keel::writeUuidHeader(writer, uuid));
+		oxReturnError(keel::writeUuidHeader(writer, *uuid));
 	}
 	oxReturnError(writer.write(buff.data(), buff.size()));
 	auto const newFile = m_fs.stat(path).error != 0;
@@ -130,7 +126,7 @@ ox::Error Project::writeBuff(ox::CRStringView path, ox::Buffer const&buff) noexc
 		fileAdded.emit(path);
 		indexFile(path);
 	} else {
-		fileUpdated.emit(path, uuid);
+		fileUpdated.emit(path);
 	}
 	return {};
 }

src/olympic/studio/modlib/src/undocommand.cpp

@@ -3,7 +3,7 @@
 
 namespace studio {
 
-bool UndoCommand::mergeWith(UndoCommand const&) noexcept {
+bool UndoCommand::mergeWith(UndoCommand const*) noexcept {
 	return false;
 }
 

src/olympic/studio/modlib/src/undostack.cpp

@@ -6,39 +6,35 @@
 
 namespace studio {
 
-ox::Error UndoStack::push(ox::UPtr<UndoCommand> &&cmd) noexcept {
+void UndoStack::push(ox::UPtr<UndoCommand> &&cmd) noexcept {
 	for (auto const i = m_stackIdx; i < m_stack.size();) {
 		std::ignore = m_stack.erase(i);
 	}
-	oxReturnError(cmd->redo());
+	cmd->redo();
 	redoTriggered.emit(cmd.get());
 	changeTriggered.emit(cmd.get());
-	if (m_stack.empty() || !(*m_stack.back().value)->mergeWith(*cmd)) {
+	if (m_stack.empty() || !(*m_stack.back().value)->mergeWith(cmd.get())) {
 		m_stack.emplace_back(std::move(cmd));
 		++m_stackIdx;
 	}
-	return {};
 }
 
-ox::Error UndoStack::redo() noexcept {
+void UndoStack::redo() noexcept {
 	if (m_stackIdx < m_stack.size()) {
-		auto &c = m_stack[m_stackIdx];
-		oxReturnError(c->redo());
-		++m_stackIdx;
+		auto &c = m_stack[m_stackIdx++];
+		c->redo();
 		redoTriggered.emit(c.get());
 		changeTriggered.emit(c.get());
 	}
-	return {};
 }
 
-ox::Error UndoStack::undo() noexcept {
+void UndoStack::undo() noexcept {
 	if (m_stackIdx) {
 		auto &c = m_stack[--m_stackIdx];
-		oxReturnError(c->undo());
+		c->undo();
 		undoTriggered.emit(c.get());
 		changeTriggered.emit(c.get());
 	}
-	return {};
 }
 
 }

src/olympic/turbine/include/turbine/clipboard.hpp

@@ -17,14 +17,19 @@ class BaseClipboardObject {
 		virtual ~BaseClipboardObject() noexcept = default;
 
 		[[nodiscard]]
-		virtual ox::StringView typeId() const noexcept = 0;
+		virtual ox::String typeId() const noexcept = 0;
+
+		[[nodiscard]]
+		constexpr auto typeMatch(ox::StringView name, int version) const noexcept {
+			return typeId() == ox::buildTypeId(name, version);
+		}
 };
 
 template<typename T>
 class ClipboardObject: public BaseClipboardObject {
 	[[nodiscard]]
-	ox::StringView typeId() const noexcept final {
-		return ox::ModelTypeId_v<T>;
+	ox::String typeId() const noexcept final {
+		return ox::buildTypeId(T::TypeName, T::TypeVersion);
 	}
 };
 
@@ -34,11 +39,11 @@ void setClipboardText(Context &ctx, ox::CRStringView text) noexcept;
 
 void setClipboardObject(Context &ctx, ox::UPtr<BaseClipboardObject> &&obj) noexcept;
 
-ox::Result<BaseClipboardObject*> getClipboardData(Context &ctx, ox::StringView typeId) noexcept;
+ox::Result<BaseClipboardObject*> getClipboardData(Context &ctx, ox::StringView typeName, int typeVersion) noexcept;
 
 template<typename T>
 ox::Result<T*> getClipboardObject(Context &ctx) noexcept {
-	oxRequire(p, getClipboardData(ctx, ox::ModelTypeId_v<T>));
+	oxRequire(p, getClipboardData(ctx, T::TypeName, T::TypeVersion));
 	return dynamic_cast<T*>(p);
 }
 

src/olympic/turbine/src/glfw/clipboard.cpp

@@ -26,8 +26,8 @@ void setClipboardObject(Context &ctx, ox::UPtr<BaseClipboardObject> &&obj) noexc
 	ctx.clipboard = std::move(obj);
 }
 
-ox::Result<BaseClipboardObject*> getClipboardData(Context &ctx, ox::StringView typeId) noexcept {
-	if (ctx.clipboard && ctx.clipboard->typeId() == typeId) {
+ox::Result<BaseClipboardObject*> getClipboardData(Context &ctx, ox::StringView typeName, int typeVersion) noexcept {
+	if (ctx.clipboard && ctx.clipboard->typeMatch(typeName, typeVersion)) {
 		return ctx.clipboard.get();
 	}
 	return OxError(1);