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#include "luascripts.hpp"
#include <components/esm3/esmreader.hpp>
#include <components/esm3/esmwriter.hpp>
#include <components/lua/luastateptr.hpp>
#include <components/lua/serialization.hpp>
// List of all records, that are related to Lua.
//
// Records:
// LUAL - LuaScriptsCfg - list of all scripts (in content files)
// LUAM - MWLua::LuaManager (in saves)
//
// Subrecords:
// LUAF - LuaScriptCfg::mFlags and ESM::RecNameInts list
// LUAW - Simulation time and last generated RefNum
// LUAE - Start of MWLua::LocalEvent or MWLua::GlobalEvent (eventName)
// LUAS - VFS path to a Lua script
// LUAD - Serialized Lua variable
// LUAT - MWLua::ScriptsContainer::Timer
// LUAC - Name of a timer callback (string)
// LUAR - Attach script to a specific record (LuaScriptCfg::PerRecordCfg)
// LUAI - Attach script to a specific instance (LuaScriptCfg::PerRefCfg)
void ESM::saveLuaBinaryData(ESMWriter& esm, const std::string& data)
{
if (data.empty())
return;
esm.startSubRecord("LUAD");
esm.write(data.data(), data.size());
esm.endRecord("LUAD");
}
std::string ESM::loadLuaBinaryData(ESMReader& esm)
{
std::string data;
if (esm.isNextSub("LUAD"))
{
esm.getSubHeader();
data.resize(esm.getSubSize());
esm.getExact(data.data(), data.size());
}
return data;
}
static bool readBool(ESM::ESMReader& esm)
{
char c;
esm.getT<char>(c);
return c != 0;
}
void ESM::LuaScriptsCfg::load(ESMReader& esm)
{
while (esm.isNextSub("LUAS"))
{
mScripts.emplace_back();
ESM::LuaScriptCfg& script = mScripts.back();
script.mScriptPath = VFS::Path::Normalized(esm.getHString());
esm.getSubNameIs("LUAF");
esm.getSubHeader();
if (esm.getSubSize() < 4 || (esm.getSubSize() % 4 != 0))
esm.fail("Incorrect LUAF size");
esm.getT(script.mFlags);
script.mTypes.resize((esm.getSubSize() - 4) / 4);
for (uint32_t& type : script.mTypes)
esm.getT(type);
script.mInitializationData = loadLuaBinaryData(esm);
while (esm.isNextSub("LUAR"))
{
esm.getSubHeader();
script.mRecords.emplace_back();
ESM::LuaScriptCfg::PerRecordCfg& recordCfg = script.mRecords.back();
recordCfg.mAttach = readBool(esm);
recordCfg.mRecordId = esm.getRefId(esm.getSubSize() - 1);
recordCfg.mInitializationData = loadLuaBinaryData(esm);
}
while (esm.isNextSub("LUAI"))
{
esm.getSubHeader();
script.mRefs.emplace_back();
ESM::LuaScriptCfg::PerRefCfg& refCfg = script.mRefs.back();
refCfg.mAttach = readBool(esm);
esm.getT<uint32_t>(refCfg.mRefnumIndex);
esm.getT<int32_t>(refCfg.mRefnumContentFile);
refCfg.mInitializationData = loadLuaBinaryData(esm);
}
}
}
void ESM::LuaScriptsCfg::adjustRefNums(const ESMReader& esm)
{
auto adjustRefNumFn = [&esm](int contentFile) -> int {
if (contentFile == 0)
return esm.getIndex();
else if (contentFile > 0 && contentFile <= static_cast<int>(esm.getParentFileIndices().size()))
return esm.getParentFileIndices()[contentFile - 1];
else
throw std::runtime_error("Incorrect contentFile index");
};
LuaUtil::LuaStatePtr state(luaL_newstate());
if (state == nullptr)
throw std::runtime_error("Failed to create Lua runtime");
LuaUtil::BasicSerializer serializer(adjustRefNumFn);
auto adjustLuaData = [&](std::string& data) {
if (data.empty())
return;
sol::object luaData = LuaUtil::deserialize(state.get(), data, &serializer);
data = LuaUtil::serialize(luaData, &serializer);
};
for (LuaScriptCfg& script : mScripts)
{
adjustLuaData(script.mInitializationData);
for (LuaScriptCfg::PerRecordCfg& recordCfg : script.mRecords)
adjustLuaData(recordCfg.mInitializationData);
for (LuaScriptCfg::PerRefCfg& refCfg : script.mRefs)
{
adjustLuaData(refCfg.mInitializationData);
refCfg.mRefnumContentFile = adjustRefNumFn(refCfg.mRefnumContentFile);
}
}
}
void ESM::LuaScriptsCfg::save(ESMWriter& esm) const
{
for (const LuaScriptCfg& script : mScripts)
{
esm.writeHNString("LUAS", script.mScriptPath);
esm.startSubRecord("LUAF");
esm.writeT<uint32_t>(script.mFlags);
for (uint32_t type : script.mTypes)
esm.writeT<uint32_t>(type);
esm.endRecord("LUAF");
saveLuaBinaryData(esm, script.mInitializationData);
for (const LuaScriptCfg::PerRecordCfg& recordCfg : script.mRecords)
{
esm.startSubRecord("LUAR");
esm.writeT<char>(recordCfg.mAttach ? 1 : 0);
esm.writeHRefId(recordCfg.mRecordId);
esm.endRecord("LUAR");
saveLuaBinaryData(esm, recordCfg.mInitializationData);
}
for (const LuaScriptCfg::PerRefCfg& refCfg : script.mRefs)
{
esm.startSubRecord("LUAI");
esm.writeT<char>(refCfg.mAttach ? 1 : 0);
esm.writeT<uint32_t>(refCfg.mRefnumIndex);
esm.writeT<int32_t>(refCfg.mRefnumContentFile);
esm.endRecord("LUAI");
saveLuaBinaryData(esm, refCfg.mInitializationData);
}
}
}
void ESM::LuaScripts::load(ESMReader& esm)
{
while (esm.isNextSub("LUAS"))
{
VFS::Path::Normalized name(esm.getHString());
std::string data = loadLuaBinaryData(esm);
std::vector<LuaTimer> timers;
while (esm.isNextSub("LUAT"))
{
esm.getSubHeader();
LuaTimer timer;
esm.getT(timer.mType);
esm.getT(timer.mTime);
timer.mCallbackName = esm.getHNString("LUAC");
timer.mCallbackArgument = loadLuaBinaryData(esm);
timers.push_back(std::move(timer));
}
mScripts.push_back({ std::move(name), std::move(data), std::move(timers) });
}
}
void ESM::LuaScripts::save(ESMWriter& esm) const
{
for (const LuaScript& script : mScripts)
{
esm.writeHNString("LUAS", script.mScriptPath);
saveLuaBinaryData(esm, script.mData);
for (const LuaTimer& timer : script.mTimers)
{
esm.startSubRecord("LUAT");
esm.writeT(timer.mType);
esm.writeT(timer.mTime);
esm.endRecord("LUAT");
esm.writeHNString("LUAC", timer.mCallbackName);
if (!timer.mCallbackArgument.empty())
saveLuaBinaryData(esm, timer.mCallbackArgument);
}
}
}
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