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60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
#ifndef COMPONENTS_LUA_ASYNCPACKAGE_H
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#define COMPONENTS_LUA_ASYNCPACKAGE_H
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#include "scriptscontainer.hpp"
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namespace LuaUtil
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{
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struct AsyncPackageId
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{
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ScriptsContainer* mContainer;
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int mScriptId;
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sol::table mHiddenData;
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};
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sol::function getAsyncPackageInitializer(
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lua_State* L, std::function<double()> simulationTimeFn, std::function<double()> gameTimeFn);
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// Wrapper for a Lua function.
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// Holds information about the script the function belongs to.
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// Needed to prevent callback calls if the script was removed.
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struct Callback
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{
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sol::main_protected_function mFunc;
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sol::table mHiddenData; // same object as Script::mHiddenData in ScriptsContainer
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static bool isLuaCallback(const sol::object&);
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static Callback fromLua(const sol::table&);
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static sol::table makeMetatable(lua_State* L);
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static sol::table make(const AsyncPackageId& asyncId, sol::main_protected_function fn, sol::table metatable);
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bool isValid() const { return mHiddenData[ScriptsContainer::sScriptIdKey] != sol::nil; }
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template <typename... Args>
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sol::object call(Args&&... args) const
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{
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sol::optional<ScriptId> scriptId = mHiddenData[ScriptsContainer::sScriptIdKey];
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if (scriptId.has_value())
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return LuaUtil::call(scriptId.value(), mFunc, std::forward<Args>(args)...);
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else
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Log(Debug::Debug) << "Ignored callback to the removed script "
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<< mHiddenData.get<std::string>(ScriptsContainer::sScriptDebugNameKey);
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return sol::nil;
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}
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template <typename... Args>
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void tryCall(Args&&... args) const
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{
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try
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{
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this->call(std::forward<Args>(args)...);
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}
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catch (std::exception& e)
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{
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Log(Debug::Error) << "Error in callback: " << e.what();
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}
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}
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};
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}
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#endif // COMPONENTS_LUA_ASYNCPACKAGE_H
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