99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/*
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* Copyright 2016 - 2022 Gary Talent (gary@drinkingtea.net). All rights reserved.
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*/
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#pragma once
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#include <ox/std/defines.hpp>
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#include <ox/claw/claw.hpp>
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#include <ox/fs/fs.hpp>
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#include <ox/model/metadata.hpp>
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#include "context.hpp"
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#include "typeconv.hpp"
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namespace nostalgia::core {
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struct PreloadPtr {
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static constexpr auto TypeName = "net.drinkingtea.ox.PreloadPtr";
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static constexpr auto TypeVersion = 1;
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uint32_t preloadAddr = 0;
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};
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oxModelBegin(PreloadPtr)
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oxModelField(preloadAddr)
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oxModelEnd()
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ox::Result<std::size_t> getPreloadAddr(Context *ctx, const ox::FileAddress &file) noexcept;
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ox::Result<std::size_t> getPreloadAddr(Context *ctx, ox::CRStringView file) noexcept;
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template<typename T>
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ox::Result<AssetRef<T>> readObj([[maybe_unused]] Context *ctx, [[maybe_unused]] ox::CRStringView path,
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[[maybe_unused]] bool forceLoad = false) noexcept {
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#ifndef OX_BARE_METAL
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constexpr auto readConvert = [](const ox::Buffer &buff) -> ox::Result<T> {
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auto [obj, err] = ox::readClaw<T>(buff);
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if (err) {
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if (err != ox::Error_ClawTypeVersionMismatch && err != ox::Error_ClawTypeMismatch) {
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return err;
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}
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oxReturnError(convert<T>(buff, &obj));
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}
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return std::move(obj);
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};
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if (forceLoad) {
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oxRequire(buff, ctx->rom->read(path));
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oxRequire(obj, readConvert(buff));
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oxRequire(cached, ctx->assetManager.setAsset(path, obj));
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return std::move(cached);
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} else {
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auto [cached, err] = ctx->assetManager.getAsset<T>(path);
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if (err) {
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oxRequire(buff, ctx->rom->read(path));
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oxRequire(obj, readConvert(buff));
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oxReturnError(ctx->assetManager.setAsset(path, obj).moveTo(&cached));
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}
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return std::move(cached);
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}
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#else
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if constexpr(ox::preloadable<T>::value) {
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oxRequire(addr, getPreloadAddr(ctx, path));
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return AssetRef<T>(reinterpret_cast<const T*>(addr));
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} else {
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return OxError(1);
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}
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#endif
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}
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template<typename T>
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ox::Result<AssetRef<T>> readObj(Context *ctx, const ox::FileAddress &file,
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[[maybe_unused]] bool forceLoad = false) noexcept {
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#ifndef OX_BARE_METAL
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oxRequire(path, file.getPath());
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return readObj<T>(ctx, ox::StringView(path), forceLoad);
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#else
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if constexpr(ox::preloadable<T>::value) {
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oxRequire(addr, getPreloadAddr(ctx, file));
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return AssetRef<T>(reinterpret_cast<const T*>(addr));
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} else {
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return OxError(1);
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}
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#endif
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}
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template<typename T>
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ox::Error writeObj(Context *ctx, const ox::FileAddress &file, const T &obj,
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ox::ClawFormat fmt = ox::ClawFormat::Metal) noexcept {
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oxRequire(objBuff, ox::writeClaw(&obj, fmt));
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return ctx->rom->write(file, objBuff.data(), objBuff.size());
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}
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ox::Result<ox::UniquePtr<ox::FileSystem>> loadRomFs(ox::CRStringView path) noexcept;
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ox::Result<char*> loadRom(ox::CRStringView path = "") noexcept;
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void unloadRom(char*) noexcept;
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}
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