mirror of
https://github.com/OpenMW/openmw.git
synced 2025-10-30 04:26:38 +00:00
530 lines
21 KiB
C++
530 lines
21 KiB
C++
#include "scriptscontainer.hpp"
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#include <components/esm/luascripts.hpp>
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namespace LuaUtil
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{
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static constexpr std::string_view ENGINE_HANDLERS = "engineHandlers";
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static constexpr std::string_view EVENT_HANDLERS = "eventHandlers";
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static constexpr std::string_view INTERFACE_NAME = "interfaceName";
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static constexpr std::string_view INTERFACE = "interface";
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static constexpr std::string_view HANDLER_INIT = "onInit";
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static constexpr std::string_view HANDLER_SAVE = "onSave";
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static constexpr std::string_view HANDLER_LOAD = "onLoad";
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static constexpr std::string_view HANDLER_INTERFACE_OVERRIDE = "onInterfaceOverride";
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ScriptsContainer::ScriptsContainer(LuaUtil::LuaState* lua, std::string_view namePrefix, ESM::LuaScriptCfg::Flags autoStartMode)
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: mNamePrefix(namePrefix), mLua(*lua), mAutoStartMode(autoStartMode)
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{
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registerEngineHandlers({&mUpdateHandlers});
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mPublicInterfaces = sol::table(lua->sol(), sol::create);
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addPackage("openmw.interfaces", mPublicInterfaces);
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}
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void ScriptsContainer::printError(int scriptId, std::string_view msg, const std::exception& e)
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{
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Log(Debug::Error) << mNamePrefix << "[" << scriptPath(scriptId) << "] " << msg << ": " << e.what();
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}
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void ScriptsContainer::addPackage(std::string packageName, sol::object package)
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{
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mAPI.emplace(std::move(packageName), makeReadOnly(std::move(package)));
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}
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bool ScriptsContainer::addCustomScript(int scriptId)
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{
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assert(mLua.getConfiguration()[scriptId].mFlags & ESM::LuaScriptCfg::sCustom);
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std::optional<sol::function> onInit, onLoad;
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bool ok = addScript(scriptId, onInit, onLoad);
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if (ok && onInit)
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callOnInit(scriptId, *onInit);
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return ok;
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}
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void ScriptsContainer::addAutoStartedScripts()
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{
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for (int scriptId : mLua.getConfiguration().getListByFlag(mAutoStartMode))
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{
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std::optional<sol::function> onInit, onLoad;
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bool ok = addScript(scriptId, onInit, onLoad);
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if (ok && onInit)
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callOnInit(scriptId, *onInit);
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}
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}
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bool ScriptsContainer::addScript(int scriptId, std::optional<sol::function>& onInit, std::optional<sol::function>& onLoad)
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{
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assert(scriptId >= 0 && scriptId < static_cast<int>(mLua.getConfiguration().size()));
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if (mScripts.count(scriptId) != 0)
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return false; // already present
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const std::string& path = scriptPath(scriptId);
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std::string debugName = mNamePrefix;
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debugName.push_back('[');
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debugName.append(path);
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debugName.push_back(']');
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Script& script = mScripts[scriptId];
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script.mHiddenData = mLua.newTable();
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script.mHiddenData[sScriptIdKey] = ScriptId{this, scriptId};
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script.mHiddenData[sScriptDebugNameKey] = debugName;
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script.mPath = path;
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try
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{
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sol::object scriptOutput = mLua.runInNewSandbox(path, mNamePrefix, mAPI, script.mHiddenData);
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if (scriptOutput == sol::nil)
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return true;
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sol::object engineHandlers = sol::nil, eventHandlers = sol::nil;
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for (const auto& [key, value] : sol::table(scriptOutput))
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{
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std::string_view sectionName = key.as<std::string_view>();
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if (sectionName == ENGINE_HANDLERS)
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engineHandlers = value;
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else if (sectionName == EVENT_HANDLERS)
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eventHandlers = value;
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else if (sectionName == INTERFACE_NAME)
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script.mInterfaceName = value.as<std::string>();
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else if (sectionName == INTERFACE)
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script.mInterface = value.as<sol::table>();
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else
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Log(Debug::Error) << "Not supported section '" << sectionName << "' in " << debugName;
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}
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if (engineHandlers != sol::nil)
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{
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for (const auto& [key, fn] : sol::table(engineHandlers))
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{
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std::string_view handlerName = key.as<std::string_view>();
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if (handlerName == HANDLER_INIT)
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onInit = sol::function(fn);
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else if (handlerName == HANDLER_LOAD)
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onLoad = sol::function(fn);
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else if (handlerName == HANDLER_SAVE)
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script.mOnSave = sol::function(fn);
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else if (handlerName == HANDLER_INTERFACE_OVERRIDE)
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script.mOnOverride = sol::function(fn);
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else
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{
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auto it = mEngineHandlers.find(handlerName);
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if (it == mEngineHandlers.end())
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Log(Debug::Error) << "Not supported handler '" << handlerName << "' in " << debugName;
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else
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insertHandler(it->second->mList, scriptId, fn);
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}
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}
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}
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if (eventHandlers != sol::nil)
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{
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for (const auto& [key, fn] : sol::table(eventHandlers))
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{
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std::string_view eventName = key.as<std::string_view>();
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auto it = mEventHandlers.find(eventName);
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if (it == mEventHandlers.end())
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it = mEventHandlers.emplace(std::string(eventName), EventHandlerList()).first;
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insertHandler(it->second, scriptId, fn);
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}
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}
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if (script.mInterfaceName.empty() == script.mInterface.has_value())
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{
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Log(Debug::Error) << debugName << ": 'interfaceName' should always be used together with 'interface'";
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script.mInterfaceName.clear();
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script.mInterface = sol::nil;
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}
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else if (script.mInterface)
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{
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script.mInterface = makeReadOnly(*script.mInterface);
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insertInterface(scriptId, script);
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}
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return true;
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}
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catch (std::exception& e)
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{
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mScripts[scriptId].mHiddenData[sScriptIdKey] = sol::nil;
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mScripts.erase(scriptId);
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Log(Debug::Error) << "Can't start " << debugName << "; " << e.what();
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return false;
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}
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}
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void ScriptsContainer::removeScript(int scriptId)
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{
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auto scriptIter = mScripts.find(scriptId);
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if (scriptIter == mScripts.end())
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return; // no such script
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Script& script = scriptIter->second;
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if (script.mInterface)
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removeInterface(scriptId, script);
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script.mHiddenData[sScriptIdKey] = sol::nil;
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mScripts.erase(scriptIter);
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for (auto& [_, handlers] : mEngineHandlers)
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removeHandler(handlers->mList, scriptId);
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for (auto& [_, handlers] : mEventHandlers)
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removeHandler(handlers, scriptId);
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}
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void ScriptsContainer::insertInterface(int scriptId, const Script& script)
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{
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assert(script.mInterface);
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const Script* prev = nullptr;
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const Script* next = nullptr;
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int nextId = 0;
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for (const auto& [otherId, otherScript] : mScripts)
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{
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if (scriptId == otherId || script.mInterfaceName != otherScript.mInterfaceName)
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continue;
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if (otherId < scriptId)
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prev = &otherScript;
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else
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{
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next = &otherScript;
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nextId = otherId;
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break;
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}
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}
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if (prev && script.mOnOverride)
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{
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try { LuaUtil::call(*script.mOnOverride, *prev->mInterface); }
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catch (std::exception& e) { printError(scriptId, "onInterfaceOverride failed", e); }
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}
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if (next && next->mOnOverride)
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{
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try { LuaUtil::call(*next->mOnOverride, *script.mInterface); }
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catch (std::exception& e) { printError(nextId, "onInterfaceOverride failed", e); }
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}
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if (next == nullptr)
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mPublicInterfaces[script.mInterfaceName] = *script.mInterface;
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}
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void ScriptsContainer::removeInterface(int scriptId, const Script& script)
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{
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assert(script.mInterface);
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const Script* prev = nullptr;
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const Script* next = nullptr;
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int nextId = 0;
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for (const auto& [otherId, otherScript] : mScripts)
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{
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if (scriptId == otherId || script.mInterfaceName != otherScript.mInterfaceName)
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continue;
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if (otherId < scriptId)
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prev = &otherScript;
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else
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{
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next = &otherScript;
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nextId = otherId;
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break;
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}
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}
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if (next)
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{
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if (next->mOnOverride)
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{
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sol::object prevInterface = sol::nil;
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if (prev)
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prevInterface = *prev->mInterface;
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try { LuaUtil::call(*next->mOnOverride, prevInterface); }
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catch (std::exception& e) { printError(nextId, "onInterfaceOverride failed", e); }
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}
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}
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else if (prev)
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mPublicInterfaces[script.mInterfaceName] = *prev->mInterface;
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else
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mPublicInterfaces[script.mInterfaceName] = sol::nil;
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}
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void ScriptsContainer::insertHandler(std::vector<Handler>& list, int scriptId, sol::function fn)
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{
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list.emplace_back();
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int pos = list.size() - 1;
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while (pos > 0 && list[pos - 1].mScriptId > scriptId)
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{
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list[pos] = std::move(list[pos - 1]);
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pos--;
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}
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list[pos].mScriptId = scriptId;
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list[pos].mFn = std::move(fn);
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}
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void ScriptsContainer::removeHandler(std::vector<Handler>& list, int scriptId)
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{
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list.erase(std::remove_if(list.begin(), list.end(),
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[scriptId](const Handler& h){ return h.mScriptId == scriptId; }),
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list.end());
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}
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void ScriptsContainer::receiveEvent(std::string_view eventName, std::string_view eventData)
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{
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auto it = mEventHandlers.find(eventName);
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if (it == mEventHandlers.end())
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{
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Log(Debug::Warning) << mNamePrefix << " has received event '" << eventName << "', but there are no handlers for this event";
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return;
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}
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sol::object data;
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try
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{
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data = LuaUtil::deserialize(mLua.sol(), eventData, mSerializer);
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}
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catch (std::exception& e)
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{
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Log(Debug::Error) << mNamePrefix << " can not parse eventData for '" << eventName << "': " << e.what();
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return;
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}
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EventHandlerList& list = it->second;
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for (int i = list.size() - 1; i >= 0; --i)
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{
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try
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{
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sol::object res = LuaUtil::call(list[i].mFn, data);
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if (res != sol::nil && !res.as<bool>())
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break; // Skip other handlers if 'false' was returned.
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}
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catch (std::exception& e)
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{
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Log(Debug::Error) << mNamePrefix << "[" << scriptPath(list[i].mScriptId)
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<< "] eventHandler[" << eventName << "] failed. " << e.what();
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}
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}
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}
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void ScriptsContainer::registerEngineHandlers(std::initializer_list<EngineHandlerList*> handlers)
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{
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for (EngineHandlerList* h : handlers)
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mEngineHandlers[h->mName] = h;
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}
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void ScriptsContainer::callOnInit(int scriptId, const sol::function& onInit)
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{
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try
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{
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const std::string& data = mLua.getConfiguration()[scriptId].mInitializationData;
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LuaUtil::call(onInit, deserialize(mLua.sol(), data, mSerializer));
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}
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catch (std::exception& e) { printError(scriptId, "onInit failed", e); }
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}
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void ScriptsContainer::save(ESM::LuaScripts& data)
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{
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std::map<int, std::vector<ESM::LuaTimer>> timers;
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auto saveTimerFn = [&](const Timer& timer, TimerType timerType)
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{
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if (!timer.mSerializable)
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return;
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ESM::LuaTimer savedTimer;
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savedTimer.mTime = timer.mTime;
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savedTimer.mType = timerType;
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savedTimer.mCallbackName = std::get<std::string>(timer.mCallback);
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savedTimer.mCallbackArgument = timer.mSerializedArg;
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timers[timer.mScriptId].push_back(std::move(savedTimer));
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};
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for (const Timer& timer : mSimulationTimersQueue)
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saveTimerFn(timer, TimerType::SIMULATION_TIME);
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for (const Timer& timer : mGameTimersQueue)
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saveTimerFn(timer, TimerType::GAME_TIME);
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data.mScripts.clear();
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for (auto& [scriptId, script] : mScripts)
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{
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ESM::LuaScript savedScript;
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// Note: We can not use `scriptPath(scriptId)` here because `save` can be called during
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// evaluating "reloadlua" command when ScriptsConfiguration is already changed.
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savedScript.mScriptPath = script.mPath;
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if (script.mOnSave)
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{
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try
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{
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sol::object state = LuaUtil::call(*script.mOnSave);
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savedScript.mData = serialize(state, mSerializer);
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}
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catch (std::exception& e) { printError(scriptId, "onSave failed", e); }
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}
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auto timersIt = timers.find(scriptId);
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if (timersIt != timers.end())
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savedScript.mTimers = std::move(timersIt->second);
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data.mScripts.push_back(std::move(savedScript));
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}
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}
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void ScriptsContainer::load(const ESM::LuaScripts& data)
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{
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removeAllScripts();
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const ScriptsConfiguration& cfg = mLua.getConfiguration();
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std::map<int, const ESM::LuaScript*> scripts;
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for (int scriptId : mLua.getConfiguration().getListByFlag(mAutoStartMode))
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scripts[scriptId] = nullptr;
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for (const ESM::LuaScript& s : data.mScripts)
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{
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std::optional<int> scriptId = cfg.findId(s.mScriptPath);
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if (!scriptId)
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{
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Log(Debug::Verbose) << "Ignoring " << mNamePrefix << "[" << s.mScriptPath << "]; script not registered";
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continue;
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}
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if (!(cfg[*scriptId].mFlags & (ESM::LuaScriptCfg::sCustom | mAutoStartMode)))
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{
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Log(Debug::Verbose) << "Ignoring " << mNamePrefix << "[" << s.mScriptPath << "]; this script is not allowed here";
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continue;
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}
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scripts[*scriptId] = &s;
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}
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for (const auto& [scriptId, savedScript] : scripts)
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{
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std::optional<sol::function> onInit, onLoad;
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if (!addScript(scriptId, onInit, onLoad))
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continue;
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if (savedScript == nullptr)
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{
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if (onInit)
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callOnInit(scriptId, *onInit);
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continue;
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}
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if (onLoad)
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{
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try
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{
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sol::object state = deserialize(mLua.sol(), savedScript->mData, mSerializer);
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sol::object initializationData =
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deserialize(mLua.sol(), mLua.getConfiguration()[scriptId].mInitializationData, mSerializer);
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LuaUtil::call(*onLoad, state, initializationData);
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}
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catch (std::exception& e) { printError(scriptId, "onLoad failed", e); }
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}
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for (const ESM::LuaTimer& savedTimer : savedScript->mTimers)
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{
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Timer timer;
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timer.mCallback = savedTimer.mCallbackName;
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timer.mSerializable = true;
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timer.mScriptId = scriptId;
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timer.mTime = savedTimer.mTime;
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try
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{
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timer.mArg = deserialize(mLua.sol(), savedTimer.mCallbackArgument, mSerializer);
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// It is important if the order of content files was changed. The deserialize-serialize procedure
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// updates refnums, so timer.mSerializedArg may be not equal to savedTimer.mCallbackArgument.
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timer.mSerializedArg = serialize(timer.mArg, mSerializer);
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if (savedTimer.mType == TimerType::GAME_TIME)
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mGameTimersQueue.push_back(std::move(timer));
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else
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mSimulationTimersQueue.push_back(std::move(timer));
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}
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catch (std::exception& e) { printError(scriptId, "can not load timer", e); }
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}
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}
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std::make_heap(mSimulationTimersQueue.begin(), mSimulationTimersQueue.end());
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std::make_heap(mGameTimersQueue.begin(), mGameTimersQueue.end());
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}
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ScriptsContainer::~ScriptsContainer()
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{
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for (auto& [_, script] : mScripts)
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script.mHiddenData[sScriptIdKey] = sol::nil;
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}
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// Note: shouldn't be called from destructor because mEngineHandlers has pointers on
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// external objects that are already removed during child class destruction.
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void ScriptsContainer::removeAllScripts()
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{
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for (auto& [_, script] : mScripts)
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script.mHiddenData[sScriptIdKey] = sol::nil;
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mScripts.clear();
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for (auto& [_, handlers] : mEngineHandlers)
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handlers->mList.clear();
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mEventHandlers.clear();
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mSimulationTimersQueue.clear();
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mGameTimersQueue.clear();
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mPublicInterfaces.clear();
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}
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ScriptsContainer::Script& ScriptsContainer::getScript(int scriptId)
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{
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auto it = mScripts.find(scriptId);
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if (it == mScripts.end())
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throw std::logic_error("Script doesn't exist");
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return it->second;
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}
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void ScriptsContainer::registerTimerCallback(int scriptId, std::string_view callbackName, sol::function callback)
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{
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getScript(scriptId).mRegisteredCallbacks.emplace(std::string(callbackName), std::move(callback));
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}
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void ScriptsContainer::insertTimer(std::vector<Timer>& timerQueue, Timer&& t)
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{
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timerQueue.push_back(std::move(t));
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std::push_heap(timerQueue.begin(), timerQueue.end());
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}
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void ScriptsContainer::setupSerializableTimer(TimerType type, double time, int scriptId,
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std::string_view callbackName, sol::object callbackArg)
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{
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Timer t;
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t.mCallback = std::string(callbackName);
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t.mScriptId = scriptId;
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t.mSerializable = true;
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t.mTime = time;
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t.mArg = callbackArg;
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t.mSerializedArg = serialize(t.mArg, mSerializer);
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insertTimer(type == TimerType::GAME_TIME ? mGameTimersQueue : mSimulationTimersQueue, std::move(t));
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}
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void ScriptsContainer::setupUnsavableTimer(TimerType type, double time, int scriptId, sol::function callback)
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{
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Timer t;
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t.mScriptId = scriptId;
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t.mSerializable = false;
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t.mTime = time;
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t.mCallback = mTemporaryCallbackCounter;
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|
getScript(t.mScriptId).mTemporaryCallbacks.emplace(mTemporaryCallbackCounter, std::move(callback));
|
|
mTemporaryCallbackCounter++;
|
|
|
|
insertTimer(type == TimerType::GAME_TIME ? mGameTimersQueue : mSimulationTimersQueue, std::move(t));
|
|
}
|
|
|
|
void ScriptsContainer::callTimer(const Timer& t)
|
|
{
|
|
try
|
|
{
|
|
Script& script = getScript(t.mScriptId);
|
|
if (t.mSerializable)
|
|
{
|
|
const std::string& callbackName = std::get<std::string>(t.mCallback);
|
|
auto it = script.mRegisteredCallbacks.find(callbackName);
|
|
if (it == script.mRegisteredCallbacks.end())
|
|
throw std::logic_error("Callback '" + callbackName + "' doesn't exist");
|
|
LuaUtil::call(it->second, t.mArg);
|
|
}
|
|
else
|
|
{
|
|
int64_t id = std::get<int64_t>(t.mCallback);
|
|
LuaUtil::call(script.mTemporaryCallbacks.at(id));
|
|
script.mTemporaryCallbacks.erase(id);
|
|
}
|
|
}
|
|
catch (std::exception& e) { printError(t.mScriptId, "callTimer failed", e); }
|
|
}
|
|
|
|
void ScriptsContainer::updateTimerQueue(std::vector<Timer>& timerQueue, double time)
|
|
{
|
|
while (!timerQueue.empty() && timerQueue.front().mTime <= time)
|
|
{
|
|
callTimer(timerQueue.front());
|
|
std::pop_heap(timerQueue.begin(), timerQueue.end());
|
|
timerQueue.pop_back();
|
|
}
|
|
}
|
|
|
|
void ScriptsContainer::processTimers(double simulationTime, double gameTime)
|
|
{
|
|
updateTimerQueue(mSimulationTimersQueue, simulationTime);
|
|
updateTimerQueue(mGameTimersQueue, gameTime);
|
|
}
|
|
|
|
}
|