Add OLYMPIC_BUILD_STUDIO CMake var

CMakeLists.txt

@@ -13,10 +13,12 @@ include(deps/buildcore/base.cmake)
 
 set(NOSTALGIA_BUILD_PLAYER ON CACHE BOOL "Build Player")
 set(NOSTALGIA_BUILD_STUDIO ON CACHE BOOL "Build Studio")
+set(OLYMPIC_BUILD_STUDIO ON CACHE BOOL "Build Studio")
 set(OX_ENABLE_TRACEHOOK OFF CACHE BOOL "Generate OxTraceHook shared library for uprobes")
 
 if(BUILDCORE_TARGET STREQUAL "gba")
 	set(NOSTALGIA_BUILD_STUDIO OFF)
+	set(OLYMPIC_BUILD_STUDIO OFF)
 	set(TURBINE_BUILD_TYPE "GBA")
 	include(deps/gbabuildcore/base.cmake)
 else()

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

@@ -161,16 +161,16 @@ template<typename T>
 constexpr Error model(T *h, CommonPtrWith<FileAddress> auto *fa) noexcept {
 	oxReturnError(h->template setTypeInfo<FileAddress>());
 	if constexpr(T::opType() == OpType::Reflect) {
-		int8_t type = 0;
+		int8_t type = -1;
 		oxReturnError(h->field("type", &type));
-		oxReturnError(h->field("data", UnionView(&fa->m_data, 0)));
+		oxReturnError(h->field("data", UnionView(&fa->m_data, type)));
 	} else if constexpr(T::opType() == OpType::Read) {
 		auto type = static_cast<int8_t>(fa->m_type);
 		oxReturnError(h->field("type", &type));
 		fa->m_type = static_cast<FileAddressType>(type);
 		oxReturnError(h->field("data", UnionView(&fa->m_data, static_cast<int>(fa->m_type))));
 	} else if constexpr(T::opType() == OpType::Write) {
-		auto type = static_cast<int8_t>(fa->m_type);
+		auto const type = static_cast<int8_t>(fa->m_type);
 		oxReturnError(h->field("type", &type));
 		oxReturnError(h->field("data", UnionView(&fa->m_data, static_cast<int>(fa->m_type))));
 	}

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

@@ -64,13 +64,14 @@ struct McInt {
 
 template<typename I>
 [[nodiscard]]
-constexpr McInt encodeInteger(I input) noexcept {
+constexpr McInt encodeInteger(I pInput) noexcept {
+	auto const input = ox::ResizedInt_t<I, 64>{pInput};
 	McInt out;
 	const auto inputNegative = is_signed_v<I> && input < 0;
 	// move input to uint64_t to allow consistent bit manipulation, and to avoid
 	// overflow concerns
 	uint64_t val = 0;
-	ox_memcpy(&val, &input, sizeof(I));
+	ox_memcpy(&val, &input, sizeof(input));
 	if (val) {
 		// bits needed to represent number factoring in space possibly
 		// needed for signed bit
@@ -93,7 +94,7 @@ constexpr McInt encodeInteger(I input) noexcept {
 		}
 		if (bytes == 9) {
 			out.data[0] = bytesIndicator;
-			ox_memcpy(&out.data[1], &leVal, sizeof(I));
+			ox_memcpy(&out.data[1], &leVal, 8);
 			if (inputNegative) {
 				out.data[1] |= 0b1000'0000;
 			}

deps/ox/src/ox/mc/read.hpp

@@ -15,6 +15,7 @@
 #include <ox/model/types.hpp>
 #include <ox/std/buffer.hpp>
 #include <ox/std/byteswap.hpp>
+#include <ox/std/optional.hpp>
 #include <ox/std/string.hpp>
 #include <ox/std/trace.hpp>
 #include <ox/std/vector.hpp>
@@ -33,15 +34,13 @@ class MetalClawReaderTemplate: public ModelHandlerBase<MetalClawReaderTemplate<R
 		FieldBitmapReader<Reader> m_fieldPresence;
 		std::size_t m_fields = 0;
 		std::size_t m_field = 0;
-		int m_unionIdx = -1;
+		ox::Optional<int> m_unionIdx;
 		Reader &m_reader;
-		MetalClawReaderTemplate<Reader> *m_parent = nullptr;
 
 	public:
 		explicit constexpr MetalClawReaderTemplate(
 				Reader &reader,
-				int unionIdx = -1,
-				MetalClawReaderTemplate<Reader> *parent = nullptr) noexcept;
+				ox::Optional<int> const&unionIdx = {}) noexcept;
 
 		constexpr ~MetalClawReaderTemplate() noexcept;
 
@@ -108,7 +107,7 @@ class MetalClawReaderTemplate: public ModelHandlerBase<MetalClawReaderTemplate<R
 		 * Returns a MetalClawReader to parse a child object.
 		 */
 		[[nodiscard]]
-		constexpr MetalClawReaderTemplate<Reader> child(const char *name, int unionIdx = -1) noexcept;
+		constexpr MetalClawReaderTemplate<Reader> child(const char *name, ox::Optional<int> unionIdx = {}) noexcept;
 
 		/**
 		 * Indicates whether or not the next field to be read is present.
@@ -136,12 +135,10 @@ class MetalClawReaderTemplate: public ModelHandlerBase<MetalClawReaderTemplate<R
 template<Reader_c Reader>
 constexpr MetalClawReaderTemplate<Reader>::MetalClawReaderTemplate(
 		Reader &reader,
-		int unionIdx,
-		MetalClawReaderTemplate *parent) noexcept:
+		ox::Optional<int> const&unionIdx) noexcept:
 		m_fieldPresence(reader),
 		m_unionIdx(unionIdx),
-		m_reader(reader),
-		m_parent(parent) {
+		m_reader(reader) {
 }
 
 template<Reader_c Reader>
@@ -194,7 +191,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, uint64_t *va
 
 template<Reader_c Reader>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, bool *val) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		auto const result = m_fieldPresence.get(static_cast<std::size_t>(m_field));
 		*val = result.value;
 		oxReturnError(result);
@@ -206,7 +203,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, bool *val) n
 // array handler
 template<Reader_c Reader>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char *name, auto *val, std::size_t valLen) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			std::size_t bytesRead = 0;
@@ -232,7 +229,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::field(const char *name, auto *v
 template<Reader_c Reader>
 template<typename T>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, HashMap<String, T> *val) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			oxRequire(g, m_reader.tellg());
@@ -264,19 +261,19 @@ template<Reader_c Reader>
 template<typename T>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char *name, T *val) noexcept {
 	if constexpr(isVector_v<T>) {
-		if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+		if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 			// set size of val if the field is present, don't worry about it if not
 			if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 				oxRequire(len, arrayLength(name, false));
-				val->resize(len);
+				oxReturnError(ox::resizeVector(*val, len));
 				return field(name, val->data(), val->size());
 			}
-			val->resize(0);
+			oxReturnError(ox::resizeVector(*val, 0));
 		}
 		++m_field;
 		return {};
 	} else if constexpr(isArray_v<T>) {
-		if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+		if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 			// set size of val if the field is present, don't worry about it if not
 			if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 				oxRequire(len, arrayLength(name, false));
@@ -289,7 +286,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::field(const char *name, T *val)
 		++m_field;
 		return {};
 	} else {
-		if ((m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) && val) {
+		if ((!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) && val) {
 			if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 				auto reader = child("");
 				oxReturnError(model(reader.interface(), val));
@@ -303,20 +300,20 @@ constexpr Error MetalClawReaderTemplate<Reader>::field(const char *name, T *val)
 template<Reader_c Reader>
 template<typename U, bool force>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, UnionView<U, force> val) noexcept {
-	if ((m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) && val.get()) {
+	if ((!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) && val.get()) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
-			auto reader = child("", val.idx());
+			auto reader = child("", ox::Optional<int>(ox::in_place, val.idx()));
 			oxReturnError(model(reader.interface(), val.get()));
 		}
 	}
 	++m_field;
-	return OxError(0);
+	return {};
 }
 
 template<Reader_c Reader>
 template<std::size_t SmallStringSize>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, BasicString<SmallStringSize> *val) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			std::size_t bytesRead = 0;
@@ -382,7 +379,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::fieldCString(const char*, char
 
 template<Reader_c Reader>
 constexpr Error MetalClawReaderTemplate<Reader>::fieldCString(const char*, char **val, std::size_t buffLen) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			std::size_t bytesRead = 0;
@@ -410,7 +407,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::fieldCString(const char*, char
 
 template<Reader_c Reader>
 constexpr Result<ArrayLength> MetalClawReaderTemplate<Reader>::arrayLength(const char*, bool pass) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			std::size_t bytesRead = 0;
@@ -427,7 +424,7 @@ constexpr Result<ArrayLength> MetalClawReaderTemplate<Reader>::arrayLength(const
 
 template<Reader_c Reader>
 constexpr Result<StringLength> MetalClawReaderTemplate<Reader>::stringLength(const char*) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			std::size_t bytesRead = 0;
@@ -442,7 +439,7 @@ constexpr Result<StringLength> MetalClawReaderTemplate<Reader>::stringLength(con
 template<Reader_c Reader>
 template<typename I>
 constexpr Error MetalClawReaderTemplate<Reader>::readInteger(I *val) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			std::size_t bytesRead = 0;
 			auto const result = mc::decodeInteger<I>(m_reader, &bytesRead);
@@ -459,7 +456,7 @@ constexpr Error MetalClawReaderTemplate<Reader>::readInteger(I *val) noexcept {
 template<Reader_c Reader>
 template<typename T, typename CB>
 constexpr Error MetalClawReaderTemplate<Reader>::field(const char*, CB cb) noexcept {
-	if (m_unionIdx == -1 || static_cast<std::size_t>(m_unionIdx) == m_field) {
+	if (!m_unionIdx.has_value() || static_cast<std::size_t>(*m_unionIdx) == m_field) {
 		if (m_fieldPresence.get(static_cast<std::size_t>(m_field))) {
 			// read the length
 			std::size_t bytesRead = 0;
@@ -491,8 +488,10 @@ constexpr ox::Error MetalClawReaderTemplate<Reader>::setTypeInfo(
 }
 
 template<Reader_c Reader>
-constexpr MetalClawReaderTemplate<Reader> MetalClawReaderTemplate<Reader>::child(const char*, int unionIdx) noexcept {
-	return MetalClawReaderTemplate<Reader>(m_reader, unionIdx, this);
+constexpr MetalClawReaderTemplate<Reader> MetalClawReaderTemplate<Reader>::child(
+		const char*,
+		ox::Optional<int> unionIdx) noexcept {
+	return MetalClawReaderTemplate<Reader>(m_reader, unionIdx);
 }
 
 template<Reader_c Reader>

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

@@ -267,6 +267,9 @@ std::map<ox::StringView, ox::Error(*)()> tests = {
 					return OxError(0);
 				};
 				oxAssert(check(uint32_t(14)), "Decode of 14 failed.");
+				oxAssert(check(int8_t(-1)), "Decode of -1 failed.");
+				oxAssert(check(int16_t(-1)), "Decode of -1 failed.");
+				oxAssert(check(int32_t(-1)), "Decode of -1 failed.");
 				oxAssert(check(int64_t(-1)), "Decode of -1 failed.");
 				oxAssert(check(int64_t(-2)), "Decode of -2 failed.");
 				oxAssert(check(int64_t(-127)), "Decode of -127 failed.");

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

@@ -16,6 +16,7 @@
 #include <ox/std/buffer.hpp>
 #include <ox/std/byteswap.hpp>
 #include <ox/std/hashmap.hpp>
+#include <ox/std/optional.hpp>
 #include <ox/std/string.hpp>
 #include <ox/std/types.hpp>
 #include <ox/std/units.hpp>
@@ -34,12 +35,12 @@ class MetalClawWriter {
 		ox::Vector<uint8_t, 16> m_presenceMapBuff{};
 		FieldBitmap m_fieldPresence;
 		int m_field = 0;
-		int m_unionIdx = -1;
+		ox::Optional<int> m_unionIdx;
 		std::size_t m_writerBeginP{};
 		Writer &m_writer;
 
 	public:
-		constexpr explicit MetalClawWriter(Writer &writer, int unionIdx = -1) noexcept;
+		constexpr explicit MetalClawWriter(Writer &writer, ox::Optional<int> const&unionIdx = {}) noexcept;
 
 		constexpr ~MetalClawWriter() noexcept = default;
 
@@ -114,7 +115,7 @@ class MetalClawWriter {
 	private:
 		constexpr Error appendInteger(Integer_c auto val) noexcept {
 			bool fieldSet = false;
-			if (val && (m_unionIdx == -1 || m_unionIdx == m_field)) {
+			if (val && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
 				auto mi = mc::encodeInteger(val);
 				oxReturnError(m_writer.write(reinterpret_cast<const char*>(mi.data), mi.length));
 				fieldSet = true;
@@ -130,7 +131,7 @@ extern template class ModelHandlerInterface<MetalClawWriter<BufferWriter>>;
 extern template class ModelHandlerInterface<MetalClawWriter<CharBuffWriter>>;
 
 template<Writer_c Writer>
-constexpr MetalClawWriter<Writer>::MetalClawWriter(Writer &writer, int unionIdx) noexcept:
+constexpr MetalClawWriter<Writer>::MetalClawWriter(Writer &writer, ox::Optional<int> const&unionIdx) noexcept:
 	m_fieldPresence(m_presenceMapBuff.data(), m_presenceMapBuff.size()),
 	m_unionIdx(unionIdx),
 	m_writerBeginP(writer.tellp()),
@@ -179,7 +180,7 @@ constexpr Error MetalClawWriter<Writer>::field(const char*, const uint64_t *val)
 
 template<Writer_c Writer>
 constexpr Error MetalClawWriter<Writer>::field(const char*, const bool *val) noexcept {
-	if (m_unionIdx == -1 || m_unionIdx == m_field) {
+	if (!m_unionIdx.has_value() || *m_unionIdx == m_field) {
 		oxReturnError(m_fieldPresence.set(static_cast<std::size_t>(m_field), *val));
 	}
 	++m_field;
@@ -190,7 +191,7 @@ template<Writer_c Writer>
 template<std::size_t SmallStringSize>
 constexpr Error MetalClawWriter<Writer>::field(const char*, const BasicString<SmallStringSize> *val) noexcept {
 	bool fieldSet = false;
-	if (val->len() && (m_unionIdx == -1 || m_unionIdx == m_field)) {
+	if (val->len() && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
 		// write the length
 		const auto strLen = mc::encodeInteger(val->len());
 		oxReturnError(m_writer.write(reinterpret_cast<const char*>(strLen.data), strLen.length));
@@ -212,7 +213,7 @@ constexpr Error MetalClawWriter<Writer>::field(const char *name, const BString<L
 template<Writer_c Writer>
 constexpr Error MetalClawWriter<Writer>::fieldCString(const char*, const char *const*val, std::size_t) noexcept {
 	bool fieldSet = false;
-	if (m_unionIdx == -1 || m_unionIdx == m_field) {
+	if (!m_unionIdx.has_value() || *m_unionIdx == m_field) {
 		const auto strLen = *val ? ox_strlen(*val) : 0;
 		// write the length
 		const auto strLenBuff = mc::encodeInteger(strLen);
@@ -239,7 +240,7 @@ constexpr Error MetalClawWriter<Writer>::fieldCString(const char *name, const ch
 template<Writer_c Writer>
 constexpr Error MetalClawWriter<Writer>::fieldCString(const char*, const char *val, std::size_t strLen) noexcept {
 	bool fieldSet = false;
-	if (strLen && (m_unionIdx == -1 || m_unionIdx == m_field)) {
+	if (strLen && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
 		// write the length
 		const auto strLenBuff = mc::encodeInteger(strLen);
 		oxReturnError(m_writer.write(reinterpret_cast<const char*>(strLenBuff.data), strLenBuff.length));
@@ -259,16 +260,17 @@ constexpr Error MetalClawWriter<Writer>::field(const char*, const T *val) noexce
 		return field(nullptr, val->data(), val->size());
 	} else {
 		bool fieldSet = false;
-		if (val && (m_unionIdx == -1 || m_unionIdx == m_field)) {
+		if (val && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
+			auto const writeIdx = m_writer.tellp();
 			MetalClawWriter<Writer> writer(m_writer);
 			ModelHandlerInterface<MetalClawWriter<Writer>> handler{&writer};
 			oxReturnError(model(&handler, val));
 			oxReturnError(writer.finalize());
-			fieldSet = true;
+			fieldSet = writeIdx != m_writer.tellp();
 		}
 		oxReturnError(m_fieldPresence.set(static_cast<std::size_t>(m_field), fieldSet));
 		++m_field;
-		return OxError(0);
+		return {};
 	}
 }
 
@@ -276,35 +278,37 @@ template<Writer_c Writer>
 template<typename U, bool force>
 constexpr Error MetalClawWriter<Writer>::field(const char*, UnionView<U, force> val) noexcept {
 	bool fieldSet = false;
-	if (val.get() && (m_unionIdx == -1 || m_unionIdx == m_field)) {
-		MetalClawWriter<Writer> writer(m_writer, val.idx());
+	if (val.get() && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
+		auto const writeIdx = m_writer.tellp();
+		MetalClawWriter<Writer> writer(m_writer, ox::Optional<int>(ox::in_place, val.idx()));
 		ModelHandlerInterface handler{&writer};
 		oxReturnError(model(&handler, val.get()));
 		oxReturnError(writer.finalize());
-		fieldSet = true;
+		fieldSet = writeIdx != m_writer.tellp();
 	}
 	oxReturnError(m_fieldPresence.set(static_cast<std::size_t>(m_field), fieldSet));
 	++m_field;
-	return OxError(0);
+	return {};
 }
 
 template<Writer_c Writer>
 template<typename T>
 constexpr Error MetalClawWriter<Writer>::field(const char*, const T *val, std::size_t len) noexcept {
 	bool fieldSet = false;
-	if (len && (m_unionIdx == -1 || m_unionIdx == m_field)) {
+	if (len && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
 		// write the length
 		const auto arrLen = mc::encodeInteger(len);
 		oxReturnError(m_writer.write(reinterpret_cast<const char*>(arrLen.data), arrLen.length));
+		auto const writeIdx = m_writer.tellp();
 		MetalClawWriter<Writer> writer(m_writer);
 		ModelHandlerInterface handler{&writer};
 		oxReturnError(handler.template setTypeInfo<T>("List", 0, {}, static_cast<std::size_t>(len)));
 		// write the array
-		for (std::size_t i = 0; i < len; i++) {
+		for (std::size_t i = 0; i < len; ++i) {
 			oxReturnError(handler.field("", &val[i]));
 		}
 		oxReturnError(writer.finalize());
-		fieldSet = true;
+		fieldSet = writeIdx != m_writer.tellp();
 	}
 	oxReturnError(m_fieldPresence.set(static_cast<std::size_t>(m_field), fieldSet));
 	++m_field;
@@ -317,7 +321,7 @@ constexpr Error MetalClawWriter<Writer>::field(const char*, const HashMap<String
 	const auto &keys = val->keys();
 	const auto len = keys.size();
 	bool fieldSet = false;
-	if (len && (m_unionIdx == -1 || m_unionIdx == m_field)) {
+	if (len && (!m_unionIdx.has_value() || *m_unionIdx == m_field)) {
 		// write the length
 		const auto arrLen = mc::encodeInteger(len);
 		oxReturnError(m_writer.write(reinterpret_cast<const char*>(arrLen.data), arrLen.length));
@@ -336,7 +340,7 @@ constexpr Error MetalClawWriter<Writer>::field(const char*, const HashMap<String
 			return handler.field("", value);
 		};
 		// write the array
-		for (std::size_t i = 0; i < len; i++) {
+		for (std::size_t i = 0; i < len; ++i) {
 			auto const&key = keys[i];
 			oxReturnError(loopBody(handler, key, *val));
 		}

deps/ox/src/ox/model/modelhandleradaptor.hpp

@@ -196,7 +196,6 @@ class ModelHandlerInterface {
 		constexpr auto handler() noexcept {
 			return m_handler;
 		}
-
 };
 
 template<typename Handler, ox::OpType opType_v = Handler::opType()>
@@ -215,7 +214,16 @@ class ModelHandlerBase {
 		static constexpr ox::OpType opType() noexcept {
 			return opType_v;
 		}
-
 };
 
+
+constexpr ox::Error resizeVector(auto &vec, size_t sz) {
+	if constexpr(ox::is_same_v<decltype(vec.resize(0)), ox::Error>) {
+		return vec.resize(sz);
+	} else {
+		vec.resize(sz);
+		return {};
+	}
+}
+
 }

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

@@ -202,7 +202,8 @@ class ModelValue {
 class ModelValueVector {
 	private:
 		Vector<ModelValue> m_vec;
-		ModelValue m_templateValue;
+		const DescriptorType *m_type = nullptr;
+		int m_typeSubscriptLevels = 0;
 		String m_typeName;
 		int m_typeVersion = 0;
 
@@ -227,14 +228,15 @@ class ModelValueVector {
 			return m_vec.data();
 		}
 
-		constexpr void resize(std::size_t sz) noexcept {
+		constexpr ox::Error resize(std::size_t sz) noexcept {
 			const auto oldSz = m_vec.size();
 			m_vec.resize(sz);
 			if (sz > oldSz) {
 				for (auto i = oldSz; i < sz; ++i) {
-					m_vec[i] = m_templateValue;
+					oxReturnError(m_vec[i].setType(m_type, m_typeSubscriptLevels));
 				}
 			}
+			return {};
 		}
 
 		[[nodiscard]]
@@ -248,7 +250,9 @@ class ModelValueVector {
 		}
 
 		constexpr Error setType(const DescriptorType *type, int subscriptLevels) noexcept {
-			return m_templateValue.setType(type, subscriptLevels);
+			m_type = type;
+			m_typeSubscriptLevels = subscriptLevels;
+			return {};
 		}
 
 		[[nodiscard]]
@@ -1089,14 +1093,12 @@ constexpr ModelValueVector::ModelValueVector(const ModelValueVector &other) noex
 	for (auto &v : other.m_vec) {
 		m_vec.emplace_back(v);
 	}
-	m_templateValue = other.m_templateValue;
 	m_typeName = other.m_typeName;
 	m_typeVersion = other.m_typeVersion;
 }
 
 constexpr ModelValueVector::ModelValueVector(ModelValueVector &&other) noexcept {
 	m_vec = std::move(other.m_vec);
-	m_templateValue = std::move(other.m_templateValue);
 	m_typeName = std::move(other.m_typeName);
 	m_typeVersion = other.m_typeVersion;
 }
@@ -1108,7 +1110,6 @@ constexpr ModelValueVector &ModelValueVector::operator=(const ModelValueVector &
 	for (auto &v : other.m_vec) {
 		m_vec.emplace_back(v);
 	}
-	m_templateValue = other.m_templateValue;
 	m_typeName = other.m_typeName;
 	m_typeVersion = other.m_typeVersion;
 	return *this;
@@ -1119,7 +1120,6 @@ constexpr ModelValueVector &ModelValueVector::operator=(ModelValueVector &&other
 		return *this;
 	}
 	m_vec = std::move(other.m_vec);
-	m_templateValue = std::move(other.m_templateValue);
 	m_typeName = std::move(other.m_typeName);
 	m_typeVersion = other.m_typeVersion;
 	return *this;

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

@@ -147,7 +147,7 @@ Error OrganicClawReader::field(const char *key, T *val) noexcept {
 	if constexpr(isVector_v<T>) {
 		const auto &srcVal = value(key);
 		const auto srcSize = srcVal.size();
-		val->resize(srcSize);
+		oxReturnError(ox::resizeVector(*val, srcSize));
 		err = field(key, val->data(), val->size());
 	} else if constexpr(isArray_v<T>) {
 		const auto &srcVal = value(key);

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

@@ -28,7 +28,7 @@ class Optional {
 		constexpr Optional() noexcept = default;
 
 		template<typename ...Args>
-		explicit constexpr Optional(Args &&... args);
+		explicit constexpr Optional(ox::in_place_t, Args &&... args);
 
 		constexpr Optional(const Optional &other) {
 			if (other.m_ptr) {
@@ -65,19 +65,19 @@ class Optional {
 		}
 
 		constexpr T &operator*() & noexcept {
-			return m_ptr;
+			return *m_ptr;
 		}
 
 		constexpr const T &operator*() const & noexcept {
-			return m_ptr;
+			return *m_ptr;
 		}
 
 		constexpr T &&operator*() && noexcept {
-			return m_ptr;
+			return *m_ptr;
 		}
 
 		constexpr const T &&operator*() const && noexcept {
-			return m_ptr;
+			return *m_ptr;
 		}
 
 		constexpr T *operator->() noexcept {
@@ -163,7 +163,7 @@ class Optional {
 
 template<typename T, std::size_t buffSize>
 template<typename... Args>
-constexpr Optional<T, buffSize>::Optional(Args &&... args) {
+constexpr Optional<T, buffSize>::Optional(ox::in_place_t, Args &&... args) {
 	emplace(ox::forward<Args>(args)...);
 }
 

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

@@ -12,6 +12,12 @@
 
 namespace ox {
 
+struct in_place_t {
+	explicit constexpr in_place_t() = default;
+};
+
+inline constexpr ox::in_place_t in_place;
+
 template<class T>
 constexpr T &&forward(remove_reference_t<T> &t) noexcept {
 	return static_cast<T&&>(t);

deps/teagba/include/teagba/addresses.hpp

@@ -49,7 +49,7 @@ using BgCtl = uint16_t;
 #define REG_BG3CTL *reinterpret_cast<volatile BgCtl*>(0x0400'000e)
 
 [[nodiscard]]
-inline auto &regBgCtl(uintptr_t bgIdx) noexcept {
+inline volatile BgCtl &regBgCtl(uintptr_t bgIdx) noexcept {
 	return *reinterpret_cast<volatile BgCtl*>(0x0400'0008 + 2 * bgIdx);
 }
 
@@ -60,7 +60,7 @@ inline auto &regBgCtl(uintptr_t bgIdx) noexcept {
 #define REG_BG3HOFS *reinterpret_cast<volatile uint32_t*>(0x0400'001c)
 
 [[nodiscard]]
-inline volatile auto &regBgHofs(auto bgIdx) noexcept {
+inline volatile uint32_t &regBgHofs(auto bgIdx) noexcept {
 	return *reinterpret_cast<volatile uint32_t*>(0x0400'0010 + 4 * bgIdx);
 }
 
@@ -71,7 +71,7 @@ inline volatile auto &regBgHofs(auto bgIdx) noexcept {
 #define REG_BG3VOFS *reinterpret_cast<volatile uint32_t*>(0x0400'001e)
 
 [[nodiscard]]
-inline volatile auto &regBgVofs(auto bgIdx) noexcept {
+inline volatile uint32_t &regBgVofs(auto bgIdx) noexcept {
 	return *reinterpret_cast<volatile uint32_t*>(0x0400'0012 + 4 * bgIdx);
 }
 

deps/teagba/include/teagba/gfx.hpp

@@ -33,9 +33,10 @@ struct OX_ALIGN8 GbaSpriteAttrUpdate {
 	uint16_t attr1 = 0;
 	uint16_t attr2 = 0;
 	uint16_t idx = 0;
-
 };
 
+GbaSpriteAttrUpdate &spriteAttr(size_t i) noexcept;
+
 void addSpriteUpdate(const GbaSpriteAttrUpdate &upd) noexcept;
 
 void applySpriteUpdates() noexcept;

deps/teagba/include/teagba/registers.hpp

@@ -8,8 +8,8 @@
 
 namespace teagba {
 
-inline auto bgSetSbb(volatile BgCtl *bgCtl, unsigned sbb) noexcept {
-	*bgCtl = static_cast<BgCtl>(*bgCtl & ~0b11111'0000'0000u) | static_cast<BgCtl>(sbb << 8);
+inline auto bgSetSbb(volatile BgCtl &bgCtl, unsigned sbb) noexcept {
+	bgCtl = static_cast<BgCtl>(bgCtl & ~0b11111'0000'0000u) | static_cast<BgCtl>(sbb << 8);
 }
 
 [[nodiscard]]
@@ -17,14 +17,9 @@ constexpr unsigned bgPri(BgCtl bgCtl) noexcept {
 	return bgCtl & 1;
 }
 
-[[nodiscard]]
-inline auto bgPri(const volatile BgCtl *bgCtl) noexcept {
-	return bgPri(*bgCtl);
-}
-
-inline auto bgSetPri(volatile BgCtl *bgCtl, unsigned pri) noexcept {
+inline auto bgSetPri(volatile BgCtl &bgCtl, unsigned pri) noexcept {
 	pri = pri & 0b1;
-	*bgCtl = static_cast<BgCtl>(*bgCtl & ~0b1u) | static_cast<BgCtl>(pri << 0);
+	bgCtl = static_cast<BgCtl>(bgCtl & ~0b1u) | static_cast<BgCtl>(pri << 0);
 }
 
 [[nodiscard]]
@@ -32,17 +27,12 @@ constexpr unsigned bgBpp(BgCtl bgCtl) noexcept {
 	return ((bgCtl >> 7) & 1) ? 8 : 4;
 }
 
-[[nodiscard]]
-inline auto bgBpp(const volatile BgCtl *bgCtl) noexcept {
-	return bgBpp(*bgCtl);
-}
-
-inline auto bgSetBpp(volatile BgCtl *bgCtl, unsigned bpp) noexcept {
+inline auto bgSetBpp(volatile BgCtl &bgCtl, unsigned bpp) noexcept {
 	constexpr auto Bpp8 = 1 << 7;
 	if (bpp == 4) {
-		*bgCtl = *bgCtl | ((*bgCtl | Bpp8) ^ Bpp8); // set to use 4 bits per pixel
+		bgCtl = bgCtl | ((bgCtl | Bpp8) ^ Bpp8); // set to use 4 bits per pixel
 	} else {
-		*bgCtl = *bgCtl | Bpp8; // set to use 8 bits per pixel
+		bgCtl = bgCtl | Bpp8; // set to use 8 bits per pixel
 	}
 }
 
@@ -51,19 +41,14 @@ constexpr auto bgCbb(BgCtl bgCtl) noexcept {
 	return (bgCtl >> 2) & 0b11u;
 }
 
-[[nodiscard]]
-inline auto bgCbb(const volatile BgCtl *bgCtl) noexcept {
-	return bgCbb(*bgCtl);
-}
-
-inline auto bgSetCbb(volatile BgCtl *bgCtl, unsigned cbb) noexcept {
+inline auto bgSetCbb(volatile BgCtl &bgCtl, unsigned cbb) noexcept {
 	cbb = cbb & 0b11;
-	*bgCtl = static_cast<BgCtl>(*bgCtl & ~0b1100u) | static_cast<BgCtl>(cbb << 2);
+	bgCtl = static_cast<BgCtl>(bgCtl & ~0b1100u) | static_cast<BgCtl>(cbb << 2);
 }
 
 constexpr void iterateBgCtl(auto cb) noexcept {
 	for (auto bgCtl = &REG_BG0CTL; bgCtl <= &REG_BG3CTL; bgCtl += 2) {
-		cb(bgCtl);
+		cb(*bgCtl);
 	}
 }
 

deps/teagba/src/gfx.cpp

@@ -10,32 +10,23 @@
 
 namespace teagba {
 
-static volatile uint16_t g_spriteUpdates = 0;
 static ox::Array<GbaSpriteAttrUpdate, 128> g_spriteBuffer;
 
-void addSpriteUpdate(const GbaSpriteAttrUpdate &upd) noexcept {
-	// block until g_spriteUpdates is less than buffer len
-	if (g_spriteUpdates >= g_spriteBuffer.size()) [[unlikely]] {
-		teagba_vblankintrwait();
+GbaSpriteAttrUpdate &spriteAttr(size_t i) noexcept {
+	return g_spriteBuffer[i];
 }
+
+void addSpriteUpdate(const GbaSpriteAttrUpdate &upd) noexcept {
 	const auto ie = REG_IE; // disable vblank interrupt handler
 	REG_IE = REG_IE & static_cast<uint16_t>(~teagba::Int_vblank); // disable vblank interrupt handler
-	const auto updateCnt = g_spriteUpdates;
-	g_spriteBuffer[updateCnt] = upd;
-	g_spriteUpdates = updateCnt + 1;
+	g_spriteBuffer[upd.idx] = upd;
 	REG_IE = ie; // enable vblank interrupt handler
 }
 
 void applySpriteUpdates() noexcept {
-	// copy g_spriteUpdates to allow it to use a register instead of reading
-	// from memory every iteration of the loop, needed because g_spriteUpdates
-	// is volatile
-	const unsigned updates = g_spriteUpdates;
-	for (unsigned i = 0; i < updates; ++i) {
-		const auto &oa = g_spriteBuffer[i];
+	for (auto const&oa : g_spriteBuffer) {
 		MEM_OAM[oa.idx] = std::bit_cast<uint64_t>(oa);
 	}
-	g_spriteUpdates = 0;
 }
 
 }

src/nostalgia/modules/CMakeLists.txt

@@ -23,6 +23,7 @@ install(
 		include/nostalgia/modules
 )
 
+if(${OLYMPIC_BUILD_STUDIO})
 	# Studio
 	if(TURBINE_BUILD_TYPE STREQUAL "Native")
 		add_library(
@@ -42,6 +43,7 @@ if(TURBINE_BUILD_TYPE STREQUAL "Native")
 				include/nostalgia/modules
 		)
 	endif()
+endif()
 
 add_library(NostalgiaProfile INTERFACE)
 target_compile_definitions(

src/nostalgia/modules/core/CMakeLists.txt

@@ -1,4 +1,7 @@
 add_subdirectory(src)
+if(NOT TURBINE_BUILD_TYPE STREQUAL "GBA")
+	add_subdirectory(test)
+endif()
 
 install(
 	DIRECTORY

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

@@ -13,9 +13,9 @@
 
 namespace nostalgia::core {
 
-extern ox::Array<char, 128> charMap;
-
 struct Sprite {
+	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.Sprite";
+	static constexpr auto TypeVersion = 1;
 	bool enabled = false;
 	int x = 0;
 	int y = 0;
@@ -23,6 +23,7 @@ struct Sprite {
 	unsigned spriteShape = 0;
 	unsigned spriteSize = 0;
 	unsigned flipX = 0;
+	unsigned bpp = 0;
 	/**
 	 * Valid priorities: 0-3
 	 */
@@ -38,14 +39,89 @@ oxModelBegin(Sprite)
 	oxModelField(spriteShape)
 	oxModelField(spriteSize)
 	oxModelField(flipX)
+	oxModelField(bpp)
 	oxModelField(priority)
 oxModelEnd()
 
+struct TileSheetSetEntrySection {
+	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.TileSheetSetEntrySection";
+	static constexpr auto TypeVersion = 1;
+	int32_t begin = 0;
+	int32_t tiles = 0;
+	[[nodiscard]]
+	constexpr auto end() const noexcept {
+		return begin + tiles - 1;
+	}
+};
+
+oxModelBegin(TileSheetSetEntrySection)
+	oxModelField(begin)
+	oxModelField(size)
+oxModelEnd()
+
+struct TileSheetSetEntry {
+	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.TileSheetSetEntry";
+	static constexpr auto TypeVersion = 1;
+	ox::FileAddress tilesheet;
+	ox::Vector<TileSheetSetEntrySection> sections;
+};
+
+oxModelBegin(TileSheetSetEntry)
+	oxModelField(tilesheet)
+	oxModelField(sections)
+oxModelEnd()
+
+struct TileSheetSet {
+	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.TileSheetSet";
+	static constexpr auto TypeVersion = 1;
+	static constexpr auto Preloadable = true;
+	int bpp = 0;
+	ox::Vector<TileSheetSetEntry> entries;
+};
+
+oxModelBegin(TileSheetSet)
+	oxModelField(bpp)
+	oxModelField(entries)
+oxModelEnd()
+
+ox::Error loadBgPalette(
+		Context &ctx,
+		ox::FileAddress const&paletteAddr) noexcept;
+
+ox::Error loadSpritePalette(
+		Context &ctx,
+		ox::FileAddress const&paletteAddr) noexcept;
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned cbb,
+		TileSheetSet const&set) noexcept;
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned cbb,
+		ox::FileAddress const&tilesheetAddr,
+		bool loadDefaultPalette = false) noexcept;
+
+ox::Error loadSpriteTileSheet(
+		Context &ctx,
+		ox::FileAddress const&tilesheetAddr,
+		bool loadDefaultPalette = false) noexcept;
+
+ox::Error loadSpriteTileSheet(
+		Context &ctx,
+		TileSheetSet const&set) noexcept;
+
+void setBgTile(Context &ctx, uint_t bgIdx, int column, int row, uint8_t tile) noexcept;
+
+void clearBg(Context &ctx, uint_t bgIdx) noexcept;
+
 [[nodiscard]]
 uint8_t bgStatus(Context &ctx) noexcept;
 
 void setBgStatus(Context &ctx, uint32_t status) noexcept;
 
+[[nodiscard]]
 bool bgStatus(Context &ctx, unsigned bg) noexcept;
 
 void setBgStatus(Context &ctx, unsigned bg, bool status) noexcept;
@@ -54,34 +130,19 @@ void setBgCbb(Context &ctx, unsigned bgIdx, unsigned cbb) noexcept;
 
 void setBgPriority(Context &ctx, uint_t bgIdx, uint_t priority) noexcept;
 
-/**
- * @param section describes which section of the selected TileSheetSpace to use (e.g. MEM_PALLETE_BG[section])
- */
-ox::Error loadBgTileSheet(
-		Context &ctx,
-		unsigned cbb,
-		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr = nullptr) noexcept;
-
-ox::Error loadSpriteTileSheet(
-		Context &ctx,
-		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr) noexcept;
-
-ox::Error initConsole(Context &ctx) noexcept;
-
-void puts(Context &ctx, int column, int row, ox::CRStringView str) noexcept;
-
-void setTile(Context &ctx, unsigned bgIdx, int column, int row, uint8_t tile) noexcept;
-
-void clearTileLayer(Context &ctx, unsigned bgIdx) noexcept;
-
 void hideSprite(Context &ctx, unsigned) noexcept;
 
 void showSprite(Context &ctx, unsigned) noexcept;
 
 void setSprite(Context &c, uint_t idx, Sprite const&s) noexcept;
 
+[[nodiscard]]
+uint_t spriteCount(Context &ctx) noexcept;
+
+ox::Error initConsole(Context &ctx) noexcept;
+
+void puts(Context &ctx, int column, int row, ox::CRStringView str) noexcept;
+
 }
 
 namespace nostalgia::core::gl {

src/nostalgia/modules/core/src/gba/context.hpp

@@ -8,10 +8,15 @@
 
 namespace nostalgia::core {
 
+struct BgCbbData {
+	unsigned bpp = 4;
+};
+
 class Context {
 
 	public:
 		turbine::Context &turbineCtx;
+		ox::Array<BgCbbData, 4> cbbData;
 
 		explicit Context(turbine::Context &tctx) noexcept;
 		Context(Context &other) noexcept = delete;

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

@@ -10,7 +10,6 @@
 #include <teagba/gfx.hpp>
 #include <teagba/registers.hpp>
 
-#include <keel/media.hpp>
 #include <turbine/turbine.hpp>
 
 #include <nostalgia/core/color.hpp>
@@ -22,13 +21,9 @@
 
 namespace nostalgia::core {
 
-struct BgCbbData {
-	unsigned bpp = 4;
-};
-static ox::Array<BgCbbData, 4> g_cbbData;
-
 constexpr auto GbaTileColumns = 32;
 constexpr auto GbaTileRows = 32;
+constexpr auto SpriteCount = 128;
 
 struct GbaPaletteTarget {
 	static constexpr auto TypeName = Palette::TypeName;
@@ -39,25 +34,105 @@ struct GbaPaletteTarget {
 struct GbaTileMapTarget {
 	static constexpr auto TypeName = CompactTileSheet::TypeName;
 	static constexpr auto TypeVersion = CompactTileSheet::TypeVersion;
-	BgCbbData *cbbData = nullptr;
+	unsigned &bpp;
 	ox::FileAddress defaultPalette;
-	GbaPaletteTarget pal;
 	volatile uint16_t *tileMap = nullptr;
+	// the following values are not actually in CompactTileSheet,
+	// and only exist to communicate with the loading process
+	size_t tileWriteIdx = 0;
+	unsigned targetBpp = 0;
+	TileSheetSetEntry const*setEntry = nullptr;
 };
 
 constexpr ox::Error model(auto *io, ox::CommonPtrWith<GbaPaletteTarget> auto *t) noexcept {
 	oxReturnError(io->template setTypeInfo<Palette>());
+	if (t->palette) {
 		const auto colorHandler = [t](std::size_t i, const Color16 *c) {
 			t->palette[i] = *c;
-		return OxError(0);
+			return ox::Error{};
 		};
 		return io->template field<Color16, decltype(colorHandler)>("colors", colorHandler);
+	} else {
+		constexpr auto colorHandler = [](std::size_t, const Color16*) {
+			return ox::Error{};
+		};
+		return io->template field<Color16, decltype(colorHandler)>("colors", colorHandler);
+	}
+}
+
+[[nodiscard]]
+static bool loadPixel(TileSheetSetEntry const&setEntry, size_t &sectionIdx, int tileIdx) noexcept {
+	if (setEntry.sections.size() <= sectionIdx) {
+		return false;
+	}
+	auto &section = setEntry.sections[sectionIdx];
+	if (tileIdx < section.begin) {
+		return false;
+	}
+	if (tileIdx > section.end()) {
+		if (sectionIdx >= setEntry.sections.size()) {
+			return false;
+		}
+		++sectionIdx;
+		return tileIdx > section.begin && tileIdx <= section.end();
+	}
+	return true;
 }
 
 constexpr ox::Error model(auto *io, ox::CommonPtrWith<GbaTileMapTarget> auto *t) noexcept {
 	oxReturnError(io->template setTypeInfo<CompactTileSheet>());
-	oxReturnError(io->field("bpp", &t->cbbData->bpp));
+	oxReturnError(io->field("bpp", &t->bpp));
 	oxReturnError(io->field("defaultPalette", &t->defaultPalette));
+	if (t->targetBpp == 0) {
+		t->targetBpp = t->bpp;
+	}
+	if (t->targetBpp != t->bpp && t->bpp == 8) {
+		return OxError(1, "Cannot load an 8 BPP tilesheet into a 4 BPP CBB");
+	}
+	ox::Error out{};
+	if (t->setEntry) {
+		// The following code is atrocious, but it works.
+		// It might be possible to clean it up a little, but it probably
+		// cannot be seriously optimized without preloading TileSheets.
+		size_t sectionIdx = 0;
+		if (t->targetBpp == t->bpp) {
+			TileSheetSetEntrySection const*section = &t->setEntry->sections[0];
+			size_t writeIt = 0;
+			uint16_t intermediate = 0;
+			size_t const fourBpp = t->bpp == 4;
+			const auto handleTileMap = [t, &intermediate, &section, &sectionIdx, &writeIt, fourBpp]
+					(std::size_t i, uint8_t const*tile) {
+				auto const tileIdx = static_cast<int>((i * (2 * fourBpp)) / PixelsPerTile);
+				if (!loadPixel(*t->setEntry, sectionIdx, tileIdx)) {
+					return ox::Error{};
+				}
+				if (writeIt & 1) { // i is odd
+					intermediate |= static_cast<uint16_t>(*tile) << 8;
+					t->tileMap[writeIt / 2] = intermediate;
+					++t->tileWriteIdx;
+				} else { // i is even
+					intermediate = *tile & 0x00ff;
+				}
+				++writeIt;
+				return ox::Error{};
+			};
+			out = io->template field<uint8_t, decltype(handleTileMap)>("tileMap", handleTileMap);
+		} else if (t->targetBpp > t->bpp) { // 4 -> 8 bits
+			const auto handleTileMap = [t, &sectionIdx](std::size_t writeIt, uint8_t const*tile) {
+				auto constexpr BytesPerTile4Bpp = 32;
+				auto const tileIdx = static_cast<int>(writeIt / BytesPerTile4Bpp);
+				if (!loadPixel(*t->setEntry, sectionIdx, tileIdx)) {
+					return ox::Error{};
+				}
+				uint16_t const px1 = *tile & 0xf;
+				uint16_t const px2 = *tile >> 4;
+				t->tileMap[t->tileWriteIdx] = static_cast<uint16_t>(px1 | (px2 << 8));
+				++t->tileWriteIdx;
+				return ox::Error{};
+			};
+			out = io->template field<uint8_t, decltype(handleTileMap)>("tileMap", handleTileMap);
+		}
+	} else {
 		uint16_t intermediate = 0;
 		const auto handleTileMap = [t, &intermediate](std::size_t i, const uint8_t*tile) {
 			if (i & 1) { // i is odd
@@ -66,18 +141,160 @@ constexpr ox::Error model(auto *io, ox::CommonPtrWith<GbaTileMapTarget> auto *t)
 			} else { // i is even
 				intermediate = *tile & 0x00ff;
 			}
-		return OxError(0);
+			return ox::Error{};
 		};
-	return io->template field<uint8_t, decltype(handleTileMap)>("tileMap", handleTileMap);
+		out = io->template field<uint8_t, decltype(handleTileMap)>("tileMap", handleTileMap);
+	}
+	return out;
 }
 
 ox::Error initGfx(Context&, InitParams const&) noexcept {
 	for (auto bgCtl = &REG_BG0CTL; bgCtl <= &REG_BG3CTL; bgCtl += 2) {
-		teagba::bgSetSbb(bgCtl, 28);
+		teagba::bgSetSbb(*bgCtl, 28);
+	}
+	for (uint16_t i = 0; i < SpriteCount; ++i) {
+		auto &sa = teagba::spriteAttr(i);
+		sa.idx = i;
 	}
 	return {};
 }
 
+ox::Error loadBgPalette(
+		Context &ctx,
+		ox::FileAddress const&paletteAddr) noexcept {
+	auto &rom = ctx.rom();
+	GbaPaletteTarget const palTarget{.palette = MEM_BG_PALETTE};
+	oxRequire(palStat, rom.stat(paletteAddr));
+	oxRequire(pal, rom.directAccess(paletteAddr));
+	oxReturnError(ox::readMC(pal, static_cast<std::size_t>(palStat.size), &palTarget));
+	return {};
+}
+
+ox::Error loadSpritePalette(
+		Context &ctx,
+		ox::FileAddress const&paletteAddr) noexcept {
+	auto &rom = ctx.rom();
+	GbaPaletteTarget const palTarget{.palette = MEM_SPRITE_PALETTE};
+	oxRequire(palStat, rom.stat(paletteAddr));
+	oxRequire(pal, rom.directAccess(paletteAddr));
+	oxReturnError(ox::readMC(pal, static_cast<std::size_t>(palStat.size), &palTarget));
+	return {};
+}
+
+static ox::Error loadTileSheetSet(
+		Context &ctx,
+		uint16_t *tileMapTargetMem,
+		TileSheetSet const&set) noexcept {
+	auto &rom = ctx.rom();
+	size_t tileWriteIdx = 0;
+	for (auto const&entry : set.entries) {
+		oxRequire(tsStat, rom.stat(entry.tilesheet));
+		oxRequire(ts, rom.directAccess(entry.tilesheet));
+		unsigned tilesheetBpp{};
+		GbaTileMapTarget target{
+				.bpp = tilesheetBpp,
+				.defaultPalette = {},
+				.tileMap = tileMapTargetMem + tileWriteIdx,
+				.targetBpp = static_cast<unsigned>(set.bpp),
+				.setEntry = &entry,
+		};
+		oxReturnError(ox::readMC(ts, static_cast<std::size_t>(tsStat.size), &target));
+		tileWriteIdx += target.tileWriteIdx;
+	}
+	return {};
+}
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned cbb,
+		ox::FileAddress const&tilesheetAddr,
+		bool loadDefaultPalette) noexcept {
+	auto &rom = ctx.rom();
+	oxRequire(tsStat, rom.stat(tilesheetAddr));
+	oxRequire(ts, rom.directAccess(tilesheetAddr));
+	GbaTileMapTarget target{
+		.bpp = ctx.cbbData[cbb].bpp,
+		.defaultPalette = {},
+		.tileMap = MEM_BG_TILES[cbb].data(),
+	};
+	oxReturnError(ox::readMC(ts, static_cast<std::size_t>(tsStat.size), &target));
+	// update bpp of all bgs with the updated cbb
+	const auto bpp = ctx.cbbData[cbb].bpp;
+	teagba::iterateBgCtl([bpp, cbb](volatile BgCtl &bgCtl) {
+		if (teagba::bgCbb(bgCtl) == cbb) {
+			teagba::bgSetBpp(bgCtl, bpp);
+		}
+	});
+	if (loadDefaultPalette && target.defaultPalette) {
+		oxReturnError(loadBgPalette(ctx, target.defaultPalette));
+	}
+	return {};
+}
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned cbb,
+		TileSheetSet const&set) noexcept {
+	auto const bpp = static_cast<unsigned>(set.bpp);
+	oxReturnError(loadTileSheetSet(ctx, MEM_BG_TILES[cbb].data(), set));
+	// update bpp of all bgs with the updated cbb
+	ctx.cbbData[cbb].bpp = bpp;
+	teagba::iterateBgCtl([bpp, cbb](volatile BgCtl &bgCtl) {
+		if (teagba::bgCbb(bgCtl) == cbb) {
+			teagba::bgSetBpp(bgCtl, bpp);
+		}
+	});
+	return {};
+}
+
+static void setSpritesBpp(unsigned const bpp) noexcept {
+	auto const eightBpp = static_cast<uint16_t >(bpp == 8);
+	for (auto i = 0u; i < SpriteCount; ++i) {
+		auto &sa = teagba::spriteAttr(i);
+		auto &a = sa.attr0;
+		a |= static_cast<uint16_t>((a & ~static_cast<uint16_t>(1u << 13)) | (eightBpp << 13));
+	}
+}
+
+ox::Error loadSpriteTileSheet(
+		Context &ctx,
+		ox::FileAddress const&tilesheetAddr,
+		bool loadDefaultPalette) noexcept {
+	auto &rom = ctx.rom();
+	oxRequire(tsStat, rom.stat(tilesheetAddr));
+	oxRequire(ts, rom.directAccess(tilesheetAddr));
+	unsigned bpp{};
+	GbaTileMapTarget target{
+		.bpp = bpp,
+		.defaultPalette = {},
+		.tileMap = MEM_SPRITE_TILES,
+	};
+	oxReturnError(ox::readMC(ts, static_cast<std::size_t>(tsStat.size), &target));
+	if (loadDefaultPalette && target.defaultPalette) {
+		oxReturnError(loadSpritePalette(ctx, target.defaultPalette));
+	}
+	setSpritesBpp(bpp);
+	return {};
+}
+
+ox::Error loadSpriteTileSheet(
+		Context &ctx,
+		TileSheetSet const&set) noexcept {
+	auto const bpp = static_cast<unsigned>(set.bpp);
+	oxReturnError(loadTileSheetSet(ctx, MEM_SPRITE_TILES, set));
+	setSpritesBpp(bpp);
+	return {};
+}
+
+void setBgTile(Context&, uint_t bgIdx, int column, int row, uint8_t tile) noexcept {
+	const auto tileIdx = static_cast<std::size_t>(row * GbaTileColumns + column);
+	MEM_BG_MAP[bgIdx][tileIdx] = tile;
+}
+
+void clearBg(Context&, uint_t bgIdx) noexcept {
+	memset(MEM_BG_MAP[bgIdx].data(), 0, GbaTileRows * GbaTileColumns);
+}
+
 uint8_t bgStatus(Context&) noexcept {
 	return (REG_DISPCTL >> 8u) & 0b1111u;
 }
@@ -97,11 +314,11 @@ void setBgStatus(Context&, unsigned bg, bool status) noexcept {
 	REG_DISPCTL = REG_DISPCTL | ((REG_DISPCTL & ~mask) | mask);
 }
 
-void setBgCbb(Context&, unsigned bgIdx, unsigned cbb) noexcept {
+void setBgCbb(Context &ctx, unsigned bgIdx, unsigned cbb) noexcept {
 	auto &bgCtl = regBgCtl(bgIdx);
-	const auto &cbbData = g_cbbData[cbb];
-	teagba::bgSetBpp(&bgCtl, cbbData.bpp);
-	teagba::bgSetCbb(&bgCtl, cbb);
+	const auto &cbbData = ctx.cbbData[cbb];
+	teagba::bgSetBpp(bgCtl, cbbData.bpp);
+	teagba::bgSetCbb(bgCtl, cbb);
 }
 
 void setBgPriority(Context&, uint_t bgIdx, uint_t priority) noexcept {
@@ -109,111 +326,6 @@ void setBgPriority(Context&, uint_t bgIdx, uint_t priority) noexcept {
 	bgCtl = (bgCtl & 0b1111'1111'1111'1100u) | (priority & 0b11);
 }
 
-static ox::Error loadBgTileSheet(
-		ox::MemFS const&rom,
-		unsigned cbb,
-		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr) noexcept {
-	oxRequire(tsStat, rom.stat(tilesheetAddr));
-	oxRequire(ts, rom.directAccess(tilesheetAddr));
-	GbaTileMapTarget target;
-	target.pal.palette = MEM_BG_PALETTE;
-	target.cbbData = &g_cbbData[cbb];
-	target.tileMap = MEM_BG_TILES[cbb].data();
-	oxReturnError(ox::readMC(ts, static_cast<std::size_t>(tsStat.size), &target));
-	// load external palette if available
-	if (paletteAddr) {
-		oxRequire(palStat, rom.stat(paletteAddr));
-		oxRequire(pal, rom.directAccess(paletteAddr));
-		oxReturnError(ox::readMC(pal, static_cast<std::size_t>(palStat.size), &target.pal));
-	}
-	// update bpp of all bgs with the updated cbb
-	const auto bpp = g_cbbData[cbb].bpp;
-	teagba::iterateBgCtl([bpp, cbb](auto bgCtl) {
-		if (teagba::bgCbb(bgCtl) == cbb) {
-			teagba::bgSetBpp(bgCtl, bpp);
-		}
-	});
-	return {};
-}
-
-ox::Error loadBgTileSheet(
-		Context &ctx,
-		unsigned cbb,
-		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr) noexcept {
-	auto &rom = ctx.rom();
-	return loadBgTileSheet(rom, cbb, tilesheetAddr, paletteAddr);
-}
-
-ox::Error loadSpriteTileSheet(
-		Context &ctx,
-		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr) noexcept {
-	auto &rom = ctx.rom();
-	oxRequire(tsStat, ctx.rom().stat(tilesheetAddr));
-	oxRequire(ts, rom.directAccess(tilesheetAddr));
-	GbaTileMapTarget target;
-	target.pal.palette = MEM_SPRITE_PALETTE;
-	target.tileMap = MEM_SPRITE_TILES;
-	oxReturnError(ox::readMC(ts, static_cast<std::size_t>(tsStat.size), &target));
-	// load external palette if available
-	if (paletteAddr) {
-		oxRequire(palStat, ctx.rom().stat(paletteAddr));
-		oxRequire(pal, rom.directAccess(paletteAddr));
-		oxReturnError(ox::readMC(pal, static_cast<std::size_t>(palStat.size), &target.pal));
-	}
-	return {};
-}
-
-ox::Error loadBgPalette(Context &ctx, unsigned, ox::FileAddress const&paletteAddr) noexcept {
-	auto &rom = ctx.rom();
-	GbaPaletteTarget target;
-	target.palette = MEM_BG_PALETTE;
-	oxRequire(palStat, ctx.rom().stat(paletteAddr));
-	oxRequire(pal, rom.directAccess(paletteAddr));
-	oxReturnError(ox::readMC(pal, static_cast<std::size_t>(palStat.size), &target));
-	return {};
-}
-
-ox::Error loadSpritePalette(Context &ctx, unsigned cbb, ox::FileAddress const&paletteAddr) noexcept {
-	auto &rom = ctx.rom();
-	GbaPaletteTarget target;
-	target.palette = &MEM_SPRITE_PALETTE[cbb];
-	oxRequire(palStat, rom.stat(paletteAddr));
-	oxRequire(pal, rom.directAccess(paletteAddr));
-	oxReturnError(ox::readMC(pal, static_cast<std::size_t>(palStat.size), &target));
-	return {};
-}
-
-ox::Error initConsole(Context &ctx) noexcept {
-	constexpr ox::FileAddress TilesheetAddr = ox::StringLiteral("/TileSheets/Charset.ng");
-	constexpr ox::FileAddress PaletteAddr = ox::StringLiteral("/Palettes/Charset.npal");
-	setBgStatus(ctx, 0b0001);
-	oxReturnError(loadBgTileSheet(ctx, 0, TilesheetAddr, PaletteAddr));
-	setBgCbb(ctx, 0, 0);
-	return {};
-}
-
-void puts(Context &ctx, int column, int row, ox::CRStringView str) noexcept {
-	const auto col = static_cast<unsigned>(column);
-	for (auto i = 0u; i < str.bytes(); i++) {
-		const auto c = charMap[static_cast<std::size_t>(str[i])];
-		setTile(ctx, 0, static_cast<int>(col + i), row, static_cast<uint8_t>(c));
-	}
-}
-
-void setTile(Context&, unsigned bgIdx, int column, int row, uint8_t tile) noexcept {
-	const auto tileIdx = static_cast<std::size_t>(row * GbaTileColumns + column);
-	MEM_BG_MAP[bgIdx][tileIdx] = tile;
-}
-
-// Do NOT use Context in the GBA version of this function.
-void clearTileLayer(Context&, unsigned bgIdx) noexcept {
-	memset(MEM_BG_MAP[bgIdx].data(), 0, GbaTileRows * GbaTileColumns);
-}
-
-[[maybe_unused]]
 void hideSprite(Context&, unsigned idx) noexcept {
 	//oxAssert(g_spriteUpdates < config::GbaSpriteBufferLen, "Sprite update buffer overflow");
 	teagba::addSpriteUpdate({
@@ -222,7 +334,6 @@ void hideSprite(Context&, unsigned idx) noexcept {
 	});
 }
 
-[[maybe_unused]]
 void showSprite(Context&, unsigned idx) noexcept {
 	//oxAssert(g_spriteUpdates < config::GbaSpriteBufferLen, "Sprite update buffer overflow");
 	teagba::addSpriteUpdate({
@@ -233,20 +344,27 @@ void showSprite(Context&, unsigned idx) noexcept {
 
 void setSprite(Context&, uint_t idx, Sprite const&s) noexcept {
 	//oxAssert(g_spriteUpdates < config::GbaSpriteBufferLen, "Sprite update buffer overflow");
+	uint16_t const eightBpp = s.bpp == 8;
 	teagba::addSpriteUpdate({
 		.attr0 = static_cast<uint16_t>(
 			  (static_cast<uint16_t>(s.y & ox::onMask<uint8_t>(0b111'1111)))
 			| (static_cast<uint16_t>(1) << 10) // enable alpha
+			| (static_cast<uint16_t>(eightBpp) << 13)
 			| (static_cast<uint16_t>(s.spriteShape) << 14)),
 		.attr1 = static_cast<uint16_t>(
 			  (static_cast<uint16_t>(s.x) & ox::onMask<uint8_t>(8))
 			| (static_cast<uint16_t>(s.flipX) << 12)
 			| (static_cast<uint16_t>(s.spriteSize) << 14)),
 		.attr2 = static_cast<uint16_t>(
-			  (static_cast<uint16_t>(s.tileIdx & ox::onMask<uint16_t>(8)))
+			// double tileIdx if 8 bpp
+			  (static_cast<uint16_t>((s.tileIdx * (1 + eightBpp)) & ox::onMask<uint16_t>(8)))
 			| (static_cast<uint16_t>(s.priority & 0b11) << 10)),
 		.idx = static_cast<uint16_t>(idx),
 	});
 }
 
+uint_t spriteCount(Context&) noexcept {
+	return SpriteCount;
+}
+
 }

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

@@ -31,7 +31,7 @@ void panic(const char *file, int line, const char *panicMsg, ox::Error const&err
 	oxIgnoreError(initGfx(*ctx, {}));
 	oxIgnoreError(initConsole(*ctx));
 	setBgStatus(*ctx, 0, true);
-	clearTileLayer(*ctx, 0);
+	clearBg(*ctx, 0);
 	ox::BString<23> serr = "Error code: ";
 	serr += static_cast<int64_t>(err);
 	puts(*ctx, 32 + 1,  1, "SADNESS...");

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

@@ -7,7 +7,7 @@
 namespace nostalgia::core {
 
 // map ASCII values to the nostalgia charset
-ox::Array<char, 128> charMap = {
+constexpr ox::Array<char, 128> charMap = {
 	0,
 	0,
 	0,
@@ -137,4 +137,29 @@ ox::Array<char, 128> charMap = {
 	50, // ~
 };
 
+ox::Error initConsole(Context &ctx) noexcept {
+	constexpr ox::FileAddress TilesheetAddr = ox::StringLiteral("/TileSheets/Charset.ng");
+	constexpr ox::FileAddress PaletteAddr = ox::StringLiteral("/Palettes/Charset.npal");
+	setBgStatus(ctx, 0b0001);
+	setBgCbb(ctx, 0, 0);
+	oxReturnError(loadBgTileSheet(ctx, 0, TilesheetAddr));
+	return loadBgPalette(ctx, PaletteAddr);
+}
+
+void puts(
+		Context &ctx,
+		int const column,
+		int const row,
+		ox::CRStringView str) noexcept {
+	auto const col = static_cast<uint_t>(column);
+	for (auto i = 0u; i < str.bytes(); ++i) {
+		setBgTile(
+				ctx,
+				0,
+				static_cast<int>(col + i),
+				row,
+				static_cast<uint8_t>(charMap[static_cast<uint8_t>(str[i])]));
+	}
+}
+
 }

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

@@ -19,11 +19,11 @@
 
 namespace nostalgia::core {
 
+namespace renderer {
+
 constexpr auto Scale = 1;
 constexpr auto PriorityScale = 0.01f;
 
-namespace renderer {
-
 Drawer::Drawer(Context &ctx) noexcept: m_ctx(ctx) {}
 
 void Drawer::draw(turbine::Context &tctx) noexcept {
@@ -98,7 +98,7 @@ constexpr ox::CStringView spritefshadTmpl = R"glsl(
 		if (outColor.a == 0) {
 			discard;
 		}
-	})glsl";;
+	})glsl";
 
 [[nodiscard]]
 static constexpr auto bgVertexRow(uint_t x, uint_t y) noexcept {
@@ -338,8 +338,7 @@ static void drawSprites(Context &ctx, ox::Size const&renderSz) noexcept {
 
 static void loadPalette(
 		GLuint shaderPgrm,
-		Palette const&pal,
-		bool firstIsTransparent) noexcept {
+		Palette const&pal) noexcept {
 	static constexpr std::size_t ColorCnt = 256;
 	ox::Array<GLfloat, ColorCnt * 4> palette{};
 	for (auto i = 0u; const auto c : pal.colors) {
@@ -348,41 +347,13 @@ static void loadPalette(
 		palette[i++] = bluef(c);
 		palette[i++] = 255;
 	}
-	if (firstIsTransparent) {
+	// make first color transparent
 	palette[3] = 0;
-	}
 	glUseProgram(shaderPgrm);
 	const auto uniformPalette = static_cast<GLint>(glGetUniformLocation(shaderPgrm, "fPalette"));
 	glUniform4fv(uniformPalette, ColorCnt, palette.data());
 }
 
-static void loadBgPalette(Context &ctx, Palette const&pal) noexcept {
-	loadPalette(ctx.bgShader, pal, true);
-}
-
-static void loadSpritePalette(Context &ctx, Palette const&pal) noexcept {
-	loadPalette(ctx.spriteShader, pal, true);
-}
-
-static void loadBgTexture(
-		Context &ctx,
-		uint_t cbbIdx,
-		const void *pixels,
-		int w,
-		int h) noexcept {
-	oxTracef("nostalgia.core.gfx.gl", "loadBgTexture: { cbbIdx: {}, w: {}, h: {} }", cbbIdx, w, h);
-	ctx.cbbs[cbbIdx].tex = createTexture(w, h, pixels);
-}
-
-static void loadSpriteTexture(
-		Context &ctx,
-		const void *pixels,
-		int w,
-		int h) noexcept {
-	oxTracef("nostalgia.core.gfx.gl", "loadSpriteTexture: { w: {}, h: {} }", w, h);
-	ctx.spriteBlocks.tex = createTexture(w, h, pixels);
-}
-
 static void setSprite(
 		Context &ctx,
 		uint_t const idx,
@@ -493,8 +464,7 @@ struct TileSheetData {
 	}
 };
 
-static ox::Result<TileSheetData> loadTileSheet(
-		Context &ctx,
+static ox::Result<TileSheetData> normalizeTileSheet(
 		CompactTileSheet const&tilesheet) noexcept {
 	const uint_t bytesPerTile = tilesheet.bpp == 8 ? PixelsPerTile : PixelsPerTile / 2;
 	const auto tiles = tilesheet.pixels.size() / bytesPerTile;
@@ -513,71 +483,131 @@ static ox::Result<TileSheetData> loadTileSheet(
 			pixels[i * 2 + 1] = tilesheet.pixels[i] >> 4;
 		}
 	}
-	renderer::loadSpriteTexture(ctx, pixels.data(), width, height);
 	return TileSheetData{std::move(pixels), width, height};
 }
 
+ox::Error loadBgPalette(
+		Context &ctx,
+		ox::FileAddress const&paletteAddr) noexcept {
+	auto &kctx = keelCtx(ctx.turbineCtx);
+	oxRequire(palette, readObj<Palette>(kctx, paletteAddr));
+	renderer::loadPalette(ctx.bgShader, *palette);
+	return {};
+}
+
+ox::Error loadSpritePalette(
+		Context &ctx,
+		ox::FileAddress const&paletteAddr) noexcept {
+	auto &kctx = keelCtx(ctx.turbineCtx);
+	oxRequire(palette, readObj<Palette>(kctx, paletteAddr));
+	renderer::loadPalette(ctx.spriteShader, *palette);
+	return {};
+}
+
+static ox::Result<TileSheetData> buildSetTsd(
+		Context &ctx,
+		TileSheetSet const&set) noexcept {
+	auto &kctx = keelCtx(ctx.turbineCtx);
+	TileSheetData setTsd;
+	setTsd.width = TileWidth;
+	for (auto const&entry : set.entries) {
+		oxRequire(tilesheet, readObj<CompactTileSheet>(kctx, entry.tilesheet));
+		oxRequire(tsd, normalizeTileSheet(*tilesheet));
+		for (auto const&s : entry.sections) {
+			auto const size = s.tiles * PixelsPerTile;
+			for (auto i = 0; i < size; ++i) {
+				auto const srcIdx = static_cast<size_t>(i) + static_cast<size_t>(s.begin * PixelsPerTile);
+				setTsd.pixels.push_back(tsd.pixels[srcIdx]);
+			}
+			setTsd.height += TileHeight * s.tiles;
+		}
+	}
+	return setTsd;
+}
+
 ox::Error loadBgTileSheet(
 		Context &ctx,
 		uint_t cbb,
 		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr) noexcept {
+		bool loadDefaultPalette) noexcept {
 	auto &kctx = keelCtx(ctx.turbineCtx);
 	oxRequire(tilesheet, readObj<CompactTileSheet>(kctx, tilesheetAddr));
-	oxRequire(palette, readObj<Palette>(kctx, paletteAddr ? paletteAddr : tilesheet->defaultPalette));
-	oxRequire(tsd, loadTileSheet(ctx, *tilesheet).to([](TileSheetData const&t) -> TileSheetData {
-		return {
-			.pixels = resizeTileSheetData(t.pixels, t.size(), Scale),
-			.width = t.width * Scale,
-			.height = t.height * Scale,
-		};
-	}));
-	renderer::loadBgTexture(ctx, cbb, tsd.pixels.data(), tsd.width, tsd.height);
-	renderer::loadBgPalette(ctx, *palette);
+	oxRequire(tsd, normalizeTileSheet(*tilesheet));
+	oxTracef("nostalgia.core.gfx.gl", "loadBgTexture: { cbbIdx: {}, w: {}, h: {} }", cbb, tsd.width, tsd.height);
+	ctx.cbbs[cbb].tex = renderer::createTexture(tsd.width, tsd.height, tsd.pixels.data());
+	if (loadDefaultPalette) {
+		oxReturnError(loadBgPalette(ctx, tilesheet->defaultPalette));
+	}
+	return {};
+}
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned cbb,
+		TileSheetSet const&set) noexcept {
+	oxRequire(setTsd, buildSetTsd(ctx, set));
+	ctx.cbbs[cbb].tex = renderer::createTexture(setTsd.width, setTsd.height, setTsd.pixels.data());
 	return {};
 }
 
 ox::Error loadSpriteTileSheet(
 		Context &ctx,
 		ox::FileAddress const&tilesheetAddr,
-		ox::FileAddress const&paletteAddr) noexcept {
+		bool loadDefaultPalette) noexcept {
 	auto &kctx = keelCtx(ctx.turbineCtx);
 	oxRequire(tilesheet, readObj<CompactTileSheet>(kctx, tilesheetAddr));
-	oxRequire(palette, readObj<Palette>(kctx, paletteAddr ? paletteAddr : tilesheet->defaultPalette));
-	oxRequire(tsd, loadTileSheet(ctx, *tilesheet));
-	renderer::loadSpriteTexture(ctx, tsd.pixels.data(), tsd.width, tsd.height);
-	renderer::loadSpritePalette(ctx, *palette);
+	oxRequire(tsd, normalizeTileSheet(*tilesheet));
+	oxTracef("nostalgia.core.gfx.gl", "loadSpriteTexture: { w: {}, h: {} }", tsd.width, tsd.height);
+	ctx.spriteBlocks.tex = renderer::createTexture(tsd.width, tsd.height, tsd.pixels.data());
+	if (loadDefaultPalette) {
+		oxReturnError(loadSpritePalette(ctx, tilesheet->defaultPalette));
+	}
 	return {};
 }
 
-ox::Error initConsole(Context &ctx) noexcept {
-	constexpr ox::FileAddress TilesheetAddr = ox::StringLiteral("/TileSheets/Charset.ng");
-	constexpr ox::FileAddress PaletteAddr = ox::StringLiteral("/Palettes/Charset.npal");
-	setBgStatus(ctx, 0b0001);
-	setBgCbb(ctx, 0, 0);
-	return loadBgTileSheet(ctx, 0, TilesheetAddr, PaletteAddr);
+ox::Error loadSpriteTileSheet(
+		Context &ctx,
+		TileSheetSet const&set) noexcept {
+	oxRequire(setTsd, buildSetTsd(ctx, set));
+	ctx.spriteBlocks.tex = renderer::createTexture(setTsd.width, setTsd.height, setTsd.pixels.data());
+	return {};
 }
 
-void puts(Context &ctx, int column, int row, ox::CRStringView str) noexcept {
-	const auto col = static_cast<uint_t>(column);
-	for (auto i = 0u; i < str.bytes(); ++i) {
-		setTile(
-			ctx,
-			0,
-			static_cast<int>(col + i),
-			row,
-			static_cast<uint8_t>(charMap[static_cast<uint8_t>(str[i])]));
-	}
-}
-
-void setBgCbb(Context &ctx, uint_t bgIdx, uint_t cbbIdx) noexcept {
+void setBgTile(
+		Context &ctx,
+		uint_t bgIdx,
+		int column,
+		int row,
+		uint8_t tile) noexcept {
+	oxTracef(
+			"nostalgia.core.gfx.setBgTile",
+			"bgIdx: {}, column: {}, row: {}, tile: {}",
+			bgIdx, column, row, tile);
+	const auto z = static_cast<uint_t>(bgIdx);
+	const auto y = static_cast<uint_t>(row);
+	const auto x = static_cast<uint_t>(column);
+	const auto i = renderer::bgVertexRow(x, y);
+	auto &cbb = ctx.cbbs[z];
+	const auto vbo = &cbb.vertices[i * renderer::BgVertexVboLength];
+	const auto ebo = &cbb.elements[i * renderer::BgVertexEboLength];
 	auto &bg = ctx.backgrounds[bgIdx];
-	bg.cbbIdx = cbbIdx;
+	renderer::setTileBufferObject(
+			static_cast<uint_t>(i * renderer::BgVertexVboRows),
+			static_cast<float>(x),
+			static_cast<float>(y),
+			static_cast<float>(tile),
+			bg.priority,
+			vbo,
+			ebo);
+	cbb.updated = true;
 }
 
-void setBgPriority(Context &ctx, uint_t bgIdx, uint_t priority) noexcept {
-	auto &bg = ctx.backgrounds[bgIdx];
-	bg.priority = static_cast<float>(priority & 0b11);
+void clearBg(Context &ctx, uint_t bgIdx) noexcept {
+	auto &cbb = ctx.cbbs[static_cast<std::size_t>(bgIdx)];
+	initBackgroundBufferObjects(cbb);
+	cbb.updated = true;
+	auto &bg = ctx.backgrounds[static_cast<std::size_t>(bgIdx)];
+	bg.priority = 0;
 }
 
 uint8_t bgStatus(Context &ctx) noexcept {
@@ -602,13 +632,14 @@ void setBgStatus(Context &ctx, uint_t bg, bool status) noexcept {
 	ctx.backgrounds[bg].enabled = status;
 }
 
+void setBgCbb(Context &ctx, uint_t bgIdx, uint_t cbbIdx) noexcept {
+	auto &bg = ctx.backgrounds[bgIdx];
+	bg.cbbIdx = cbbIdx;
+}
 
-void clearTileLayer(Context &ctx, uint_t bgIdx) noexcept {
-	auto &cbb = ctx.cbbs[static_cast<std::size_t>(bgIdx)];
-	initBackgroundBufferObjects(cbb);
-	cbb.updated = true;
-	auto &bg = ctx.backgrounds[static_cast<std::size_t>(bgIdx)];
-	bg.priority = 0;
+void setBgPriority(Context &ctx, uint_t bgIdx, uint_t priority) noexcept {
+	auto &bg = ctx.backgrounds[bgIdx];
+	bg.priority = static_cast<float>(priority & 0b11);
 }
 
 void hideSprite(Context &ctx, uint_t idx) noexcept {
@@ -629,33 +660,8 @@ void setSprite(Context &ctx, uint_t idx, Sprite const&sprite) noexcept {
 	renderer::setSprite(ctx, idx, s);
 }
 
-void setTile(
-		Context &ctx,
-		uint_t bgIdx,
-		int column,
-		int row,
-		uint8_t tile) noexcept {
-	oxTracef(
-			"nostalgia.core.gfx.setTile",
-			"bgIdx: {}, column: {}, row: {}, tile: {}",
-			bgIdx, column, row, tile);
-	const auto z = static_cast<uint_t>(bgIdx);
-	const auto y = static_cast<uint_t>(row);
-	const auto x = static_cast<uint_t>(column);
-	const auto i = renderer::bgVertexRow(x, y);
-	auto &cbb = ctx.cbbs[z];
-	const auto vbo = &cbb.vertices[i * renderer::BgVertexVboLength];
-	const auto ebo = &cbb.elements[i * renderer::BgVertexEboLength];
-	auto &bg = ctx.backgrounds[bgIdx];
-	renderer::setTileBufferObject(
-			static_cast<uint_t>(i * renderer::BgVertexVboRows),
-			static_cast<float>(x),
-			static_cast<float>(y),
-			static_cast<float>(tile),
-			bg.priority,
-			vbo,
-			ebo);
-	cbb.updated = true;
+uint_t spriteCount(Context &ctx) noexcept {
+	return ctx.spriteCount;
 }
 
 namespace gl {

src/nostalgia/modules/core/test/CMakeLists.txt

@@ -0,0 +1,11 @@
+add_executable(
+	NostalgiaCoreTest
+		tests.cpp
+)
+
+target_link_libraries(
+	NostalgiaCoreTest
+		NostalgiaCore
+)
+
+add_test("[NostalgiaCore] readWriteTileSheet" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/NostalgiaCoreTest readWriteTileSheet)

src/nostalgia/modules/core/test/tests.cpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2016 - 2023 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#undef NDEBUG
+
+#include <map>
+#include <ox/std/error.hpp>
+#include <ox/mc/mc.hpp>
+#include <nostalgia/core/core.hpp>
+
+using namespace nostalgia;
+
+static std::map<ox::StringView, ox::Error(*)()> tests = {
+	{
+		"readWriteTileSheet",
+		[]() -> ox::Error {
+			core::TileSheet in;
+			oxRequire(buff, ox::writeMC(in));
+			oxRequire(out, ox::readMC<core::TileSheet>(buff));
+			oxAssert(in.subsheet.name == out.subsheet.name, "subsheet.name serialization broken");
+			return {};
+		}
+	},
+};
+
+int main(int argc, const char **args) {
+	int retval = -1;
+	if (argc > 0) {
+		auto const testName = ox::StringView(args[1]);
+		if (tests.find(testName) != tests.end()) {
+			retval = static_cast<int>(tests[testName]());
+		} else {
+			retval = 1;
+		}
+	}
+	return retval;
+}

src/nostalgia/modules/scene/src/scene.cpp

@@ -17,8 +17,8 @@ ox::Error Scene::setupDisplay(core::Context &ctx) const noexcept {
 		return OxError(1, "Scene has no palettes");
 	}
 	auto const&palette = m_sceneStatic.palettes[0];
-	oxReturnError(core::loadBgTileSheet(
-				ctx, 0, m_sceneStatic.tilesheet, palette));
+	oxReturnError(core::loadBgTileSheet(ctx, 0, m_sceneStatic.tilesheet));
+	oxReturnError(core::loadBgPalette(ctx, palette));
 	// disable all backgrounds
 	core::setBgStatus(ctx, 0);
 	for (auto layerNo = 0u; auto const&layer : m_sceneStatic.tileMapIdx) {
@@ -39,10 +39,10 @@ void Scene::setupLayer(
 	const auto width = m_sceneStatic.rows[layerNo];
 	for (auto const&tile : layer) {
 		const auto tile8 = static_cast<uint8_t>(tile);
-		core::setTile(ctx, layerNo, x, y, tile8);
-		core::setTile(ctx, layerNo, x + 1, y, tile8 + 1);
-		core::setTile(ctx, layerNo, x, y + 1, tile8 + 2);
-		core::setTile(ctx, layerNo, x + 1, y + 1, tile8 + 3);
+		core::setBgTile(ctx, layerNo, x, y, tile8);
+		core::setBgTile(ctx, layerNo, x + 1, y, tile8 + 1);
+		core::setBgTile(ctx, layerNo, x, y + 1, tile8 + 2);
+		core::setBgTile(ctx, layerNo, x + 1, y + 1, tile8 + 3);
 		x += 2;
 		if (x >= width * 2) {
 			x = 0;

src/nostalgia/player/app.cpp

@@ -14,25 +14,6 @@ static int spriteX{};
 static int spriteY{};
 static bool s_paused = false;
 
-static int sceneUpdateHandler(turbine::Context&) noexcept {
-	constexpr auto sleepTime = 16;
-	if (s_paused) {
-		return sleepTime;
-	}
-	// do stuff
-	return sleepTime;
-}
-
-static void sceneKeyEventHandler(turbine::Context &tctx, turbine::Key key, bool down) noexcept {
-	if (down) {
-		if (key == turbine::Key::Alpha_Q) {
-			turbine::requestShutdown(tctx);
-		} else if (key == turbine::Key::Alpha_P) {
-			s_paused = !s_paused;
-		}
-	}
-}
-
 [[maybe_unused]]
 static int testUpdateHandler(turbine::Context &tctx) noexcept {
 	auto &cctx = *turbine::applicationData<core::Context>(tctx);
@@ -82,7 +63,6 @@ static void testKeyEventHandler(turbine::Context &tctx, turbine::Key key, bool d
 	}
 }
 
-
 [[maybe_unused]]
 static ox::Error runTest(turbine::Context &tctx) {
 	constexpr ox::FileAddress TileSheetAddr = ox::StringLiteral("/TileSheets/Charset.ng");
@@ -90,17 +70,78 @@ static ox::Error runTest(turbine::Context &tctx) {
 	oxRequireM(cctx, core::init(tctx));
 	turbine::setApplicationData(tctx, cctx.get());
 	oxRequire(tsStat, turbine::rom(tctx)->stat(PaletteAddr));
-	oxReturnError(core::loadSpriteTileSheet(*cctx, TileSheetAddr, PaletteAddr));
+	oxReturnError(core::loadSpriteTileSheet(*cctx, TileSheetAddr));
+	oxReturnError(core::loadSpritePalette(*cctx, PaletteAddr));
 	oxReturnError(core::initConsole(*cctx));
 	core::puts(*cctx, 10, 9, "DOPENESS!!!");
 	turbine::setUpdateHandler(tctx, testUpdateHandler);
 	turbine::setKeyEventHandler(tctx, testKeyEventHandler);
-	//core::setBgStatus(*cctx, 1, true);
-	//core::setBgStatus(*cctx, 2, true);
-	//core::setBgStatus(*cctx, 3, true);
 	return turbine::run(tctx);
 }
 
+
+[[maybe_unused]]
+static ox::Error runTileSheetSetTest(turbine::Context &tctx) {
+	// this should make the screen display 'ABCDB'
+	constexpr ox::FileAddress PaletteAddr = ox::StringLiteral("/Palettes/Charset.npal");
+	oxRequireM(cctx, core::init(tctx));
+	turbine::setApplicationData(tctx, cctx.get());
+	oxRequire(tsStat, turbine::rom(tctx)->stat(PaletteAddr));
+	core::TileSheetSet const set{
+		.bpp = 4,
+		.entries = {
+			{ .tilesheet = ox::StringLiteral("/TileSheets/Chester.ng"), .sections{{.begin = 0, .tiles = 1}} },
+			{ .tilesheet = ox::StringLiteral("/TileSheets/AB.ng"),      .sections{{.begin = 0, .tiles = 2}} },
+			{ .tilesheet = ox::StringLiteral("/TileSheets/CD.ng"),      .sections{{.begin = 0, .tiles = 2}} },
+			{ .tilesheet = ox::StringLiteral("/TileSheets/AB.ng"),      .sections{{.begin = 1, .tiles = 1}} },
+		},
+	};
+	oxReturnError(core::loadBgTileSheet(*cctx, 0, set));
+	oxReturnError(core::loadSpriteTileSheet(*cctx, set));
+	oxReturnError(core::loadBgPalette(*cctx, PaletteAddr));
+	oxReturnError(core::loadSpritePalette(*cctx, PaletteAddr));
+	core::setBgStatus(*cctx, 0, true);
+	core::setBgTile(*cctx, 0, 10, 9, 1);
+	core::setBgTile(*cctx, 0, 11, 9, 2);
+	core::setBgTile(*cctx, 0, 13, 9, 4);
+	core::setSprite(*cctx, 16, {
+		.enabled = true,
+		.x = 12 * 8,
+		.y = 9 * 8,
+		.tileIdx = 3,
+		.bpp = static_cast<unsigned>(set.bpp),
+	});
+	core::setSprite(*cctx, 17, {
+		.enabled = true,
+		.x = 14 * 8,
+		.y = 9 * 8,
+		.tileIdx = 5,
+		.bpp = static_cast<unsigned>(set.bpp),
+	});
+	turbine::setKeyEventHandler(tctx, testKeyEventHandler);
+	return turbine::run(tctx);
+}
+
+
+static int sceneUpdateHandler(turbine::Context&) noexcept {
+	constexpr auto sleepTime = 16;
+	if (s_paused) {
+		return sleepTime;
+	}
+	// do stuff
+	return sleepTime;
+}
+
+static void sceneKeyEventHandler(turbine::Context &tctx, turbine::Key key, bool down) noexcept {
+	if (down) {
+		if (key == turbine::Key::Alpha_Q) {
+			turbine::requestShutdown(tctx);
+		} else if (key == turbine::Key::Alpha_P) {
+			s_paused = !s_paused;
+		}
+	}
+}
+
 [[maybe_unused]]
 static ox::Error runScene(turbine::Context &tctx) {
 	constexpr ox::FileAddress SceneAddr = ox::StringLiteral("/Scenes/Chester.nscn");
@@ -115,5 +156,5 @@ static ox::Error runScene(turbine::Context &tctx) {
 
 ox::Error run(ox::UniquePtr<ox::FileSystem> &&fs) noexcept {
 	oxRequireM(tctx, turbine::init(std::move(fs), "Nostalgia"));
-	return runTest(*tctx);
+	return runTileSheetSetTest(*tctx);
 }

src/olympic/CMakeLists.txt

@@ -1,6 +1,6 @@
 add_subdirectory(applib)
 add_subdirectory(keel)
 add_subdirectory(turbine)
-if(TURBINE_BUILD_TYPE STREQUAL "Native")
+if(${OLYMPIC_BUILD_STUDIO})
     add_subdirectory(studio)
 endif()

src/olympic/studio/applib/src/newmenu.cpp

@@ -20,6 +20,8 @@ NewMenu::NewMenu() noexcept {
 void NewMenu::open() noexcept {
 	m_stage = Stage::Opening;
 	m_selectedType = 0;
+	m_itemName = "";
+	m_typeName = "";
 }
 
 void NewMenu::close() noexcept {