Merge pull request #263 from fedddddd/lui-scripting

Bring over LUI stuff from iw6x

src/client/component/patches.cpp

@@ -181,6 +181,22 @@ namespace patches
 			// CG_SetClientDvarFromServer
 			reinterpret_cast<void(*)(void*, void*, const char*, const char*)>(0x1401BF0A0)(a1, a2, dvar, value);
 		}
+
+		utils::hook::detour cmd_lui_notify_server_hook;
+		void cmd_lui_notify_server_stub(game::mp::gentity_s* ent)
+		{
+			command::params_sv params{};
+			const auto menu_id = atoi(params.get(1));
+			const auto client = &game::mp::svs_clients[ent->s.entityNum];
+
+			// 22 => "end_game"
+			if (menu_id == 22 && client->header.remoteAddress.type != game::NA_LOOPBACK)
+			{
+				return;
+			}
+
+			cmd_lui_notify_server_hook.invoke<void>(ent);
+		}
 	}
 
 	class component final : public component_interface
@@ -310,9 +326,11 @@ namespace patches
 			dvars::override::Dvar_RegisterInt("sv_timeout", 90, 90, 1800, game::DVAR_FLAG_NONE); // 30 - 0 - 1800
 			dvars::override::Dvar_RegisterInt("cl_connectTimeout", 120, 120, 1800, game::DVAR_FLAG_NONE); // Seems unused
 			dvars::override::Dvar_RegisterInt("sv_connectTimeout", 120, 120, 1800, game::DVAR_FLAG_NONE); // 60 - 0 - 1800
-
+      
-			// Spectate dvar
 			game::Dvar_RegisterInt("scr_game_spectatetype", 1, 0, 99, game::DVAR_FLAG_REPLICATED, "");
+      
+			// Prevent clients from ending the game as non host by sending 'end_game' lui notification
+			cmd_lui_notify_server_hook.create(0x1402E9390, cmd_lui_notify_server_stub);
 		}
 
 		static void patch_sp()

src/client/component/ui_scripting.cpp

@@ -0,0 +1,159 @@
+#include <std_include.hpp>
+#include "loader/component_loader.hpp"
+
+#include "game/game.hpp"
+#include "game/dvars.hpp"
+
+#include "scheduler.hpp"
+#include "command.hpp"
+
+#include "ui_scripting.hpp"
+
+#include "game/ui_scripting/lua/engine.hpp"
+#include "game/ui_scripting/execution.hpp"
+#include "game/ui_scripting/lua/error.hpp"
+
+#include <utils/string.hpp>
+#include <utils/hook.hpp>
+
+namespace ui_scripting
+{
+	namespace
+	{
+		std::unordered_map<game::hks::cclosure*, sol::protected_function> converted_functions;
+
+		utils::hook::detour hksi_lual_error_hook;
+		utils::hook::detour hksi_lual_error_hook2;
+		utils::hook::detour hks_start_hook;
+		utils::hook::detour hks_shutdown_hook;
+
+		bool error_hook_enabled = false;
+
+		void hksi_lual_error_stub(game::hks::lua_State* s, const char* fmt, ...)
+		{
+			char va_buffer[0x200] = { 0 };
+
+			va_list ap;
+			va_start(ap, fmt);
+			vsprintf_s(va_buffer, fmt, ap);
+			va_end(ap);
+
+			const auto formatted = std::string(va_buffer);
+
+			if (!error_hook_enabled)
+			{
+				return hksi_lual_error_hook.invoke<void>(s, formatted.data());
+			}
+			else
+			{
+				throw std::runtime_error(formatted);
+			}
+		}
+
+		void* hks_start_stub(char a1)
+		{
+			const auto _ = gsl::finally([]()
+			{
+				ui_scripting::lua::engine::start();
+			});
+
+			return hks_start_hook.invoke<void*>(a1);
+		}
+
+		void hks_shutdown_stub()
+		{
+			ui_scripting::lua::engine::stop();
+			hks_shutdown_hook.invoke<void*>();
+		}
+	}
+
+	int main_function_handler(game::hks::lua_State* state)
+	{
+		const auto value = state->m_apistack.base[-1];
+		if (value.t != game::hks::TCFUNCTION)
+		{
+			return 0;
+		}
+
+		const auto closure = value.v.cClosure;
+		if (converted_functions.find(closure) == converted_functions.end())
+		{
+			return 0;
+		}
+
+		const auto function = converted_functions[closure];
+		const auto count = static_cast<int>(state->m_apistack.top - state->m_apistack.base);
+		const auto arguments = get_return_values(count);
+		const auto s = function.lua_state();
+
+		std::vector<sol::lua_value> converted_args;
+
+		for (const auto& argument : arguments)
+		{
+			converted_args.push_back(lua::convert(s, argument));
+		}
+
+		const auto results = function(sol::as_args(converted_args));
+		lua::handle_error(results);
+
+		for (const auto& result : results)
+		{
+			push_value(lua::convert({s, result}));
+		}
+
+		return results.return_count();
+	}
+
+	void add_converted_function(game::hks::cclosure* closure, const sol::protected_function& function)
+	{
+		converted_functions[closure] = function;
+	}
+
+	void clear_converted_functions()
+	{
+		converted_functions.clear();
+	}
+
+	void enable_error_hook()
+	{
+		error_hook_enabled = true;
+	}
+
+	void disable_error_hook()
+	{
+		error_hook_enabled = false;
+	}
+
+	class component final : public component_interface
+	{
+	public:
+
+		void post_unpack() override
+		{
+			if (!game::environment::is_mp())
+			{
+				return;
+			}
+
+			scheduler::loop(ui_scripting::lua::engine::run_frame, scheduler::pipeline::renderer);
+
+			hks_start_hook.create(0x1400E4E40, hks_start_stub);
+			hks_shutdown_hook.create(0x1400DB9A0, hks_shutdown_stub);
+			hksi_lual_error_hook.create(0x1400A03D0, hksi_lual_error_stub);
+			hksi_lual_error_hook2.create(0x1400A77D0, hksi_lual_error_stub);
+
+			command::add("lui_restart", []()
+			{
+				utils::hook::invoke<void>(0x1400DB9A0);
+				utils::hook::invoke<void>(0x1400E6730);
+			});
+
+			command::add("reloaduiscripts", []()
+			{
+				scheduler::once(ui_scripting::lua::engine::start, scheduler::pipeline::renderer);
+			});
+		}
+	};
+}
+
+REGISTER_COMPONENT(ui_scripting::component)

src/client/component/ui_scripting.hpp

@@ -0,0 +1,12 @@
+#pragma once
+#include "game/ui_scripting/lua/value_conversion.hpp"
+
+namespace ui_scripting
+{
+	int main_function_handler(game::hks::lua_State* state);
+	void add_converted_function(game::hks::cclosure* closure, const sol::protected_function& function);
+	void clear_converted_functions();
+
+	void enable_error_hook();
+	void disable_error_hook();
+}

src/client/game/structs.hpp

@@ -1424,4 +1424,208 @@ namespace game
 		sp::playerState_s* sp;
 		mp::playerState_s* mp;
 	};
+
+	namespace hks
+	{
+		struct GenericChunkHeader
+		{
+			unsigned __int64 m_flags;
+		};
+
+		struct ChunkHeader : GenericChunkHeader
+		{
+			ChunkHeader* m_next;
+		};
+
+		struct UserData : ChunkHeader
+		{
+			unsigned __int64 m_envAndSizeOffsetHighBits;
+			unsigned __int64 m_metaAndSizeOffsetLowBits;
+			char m_data[8];
+		};
+
+		struct InternString
+		{
+			unsigned __int64 m_flags;
+			unsigned __int64 m_lengthbits;
+			unsigned int m_hash;
+			char m_data[30];
+		};
+
+		struct HashTable;
+		struct cclosure;
+
+		union HksValue
+		{
+			cclosure* cClosure;
+			void* closure;
+			UserData* userData;
+			HashTable* table;
+			void* tstruct;
+			InternString* str;
+			void* thread;
+			void* ptr;
+			float number;
+			unsigned int native;
+			bool boolean;
+		};
+
+		enum HksObjectType
+		{
+			TANY = 0xFFFFFFFE,
+			TNONE = 0xFFFFFFFF,
+			TNIL = 0x0,
+			TBOOLEAN = 0x1,
+			TLIGHTUSERDATA = 0x2,
+			TNUMBER = 0x3,
+			TSTRING = 0x4,
+			TTABLE = 0x5,
+			TFUNCTION = 0x6,  // idk
+			TUSERDATA = 0x7,
+			TTHREAD = 0x8,
+			TIFUNCTION = 0x9, // Lua function
+			TCFUNCTION = 0xA, // C function
+			TUI64 = 0xB,
+			TSTRUCT = 0xC,
+			NUM_TYPE_OBJECTS = 0xE,
+		};
+
+		struct HksObject
+		{
+			HksObjectType t;
+			HksValue v;
+		};
+
+		const struct hksInstruction
+		{
+			unsigned int code;
+		};
+
+		struct ActivationRecord
+		{
+			HksObject* m_base;
+			const hksInstruction* m_returnAddress;
+			__int16 m_tailCallDepth;
+			__int16 m_numVarargs;
+			int m_numExpectedReturns;
+		};
+
+		struct CallStack
+		{
+			ActivationRecord* m_records;
+			ActivationRecord* m_lastrecord;
+			ActivationRecord* m_current;
+			const hksInstruction* m_current_lua_pc;
+			const hksInstruction* m_hook_return_addr;
+			int m_hook_level;
+		};
+
+		struct ApiStack
+		{
+			HksObject* top;
+			HksObject* base;
+			HksObject* alloc_top;
+			HksObject* bottom;
+		};
+
+		struct UpValue : ChunkHeader
+		{
+			HksObject m_storage;
+			HksObject* loc;
+			UpValue* m_next;
+		};
+
+		struct CallSite
+		{
+			_SETJMP_FLOAT128 m_jumpBuffer[16];
+			CallSite* m_prev;
+		};
+
+		enum Status
+		{
+			NEW = 0x1,
+			RUNNING = 0x2,
+			YIELDED = 0x3,
+			DEAD_ERROR = 0x4,
+		};
+
+		enum HksError
+		{
+		};
+
+		struct lua_Debug
+		{
+			int event;
+			const char* name;
+			const char* namewhat;
+			const char* what;
+			const char* source;
+			int currentline;
+			int nups;
+			int nparams;
+			int ishksfunc;
+			int linedefined;
+			int lastlinedefined;
+			char short_src[512];
+			int callstack_level;
+			int is_tail_call;
+		};
+
+		struct lua_State : ChunkHeader
+		{
+			void* m_global;
+			CallStack m_callStack;
+			ApiStack m_apistack;
+			UpValue* pending;
+			HksObject globals;
+			HksObject m_cEnv;
+			CallSite* m_callsites;
+			int m_numberOfCCalls;
+			void* m_context;
+			InternString* m_name;
+			lua_State* m_nextState;
+			lua_State* m_nextStateStack;
+			Status m_status;
+			HksError m_error;
+		};
+
+		using lua_function = int(__fastcall*)(lua_State*);
+
+		struct luaL_Reg
+		{
+			const char* name;
+			lua_function function;
+		};
+
+		struct Node
+		{
+			HksObject m_key;
+			HksObject m_value;
+		};
+
+		struct Metatable
+		{
+		};
+
+		struct HashTable : ChunkHeader
+		{
+			Metatable* m_meta;
+			unsigned int m_version;
+			unsigned int m_mask;
+			Node* m_hashPart;
+			HksObject* m_arrayPart;
+			unsigned int m_arraySize;
+			Node* m_freeNode;
+		};
+
+		struct cclosure : ChunkHeader
+		{
+			lua_function m_function;
+			HashTable* m_env;
+			__int16 m_numUpvalues;
+			__int16 m_flags;
+			InternString* m_name;
+			HksObject m_upvalues[1];
+		};
+	}
 }

src/client/game/symbols.hpp

@@ -280,4 +280,19 @@ namespace game
 	{
 		WEAK symbol<gentity_s> g_entities{0x143C26DC0, 0};
 	}
+
+	namespace hks
+	{
+		WEAK symbol<lua_State*> lua_state{0, 0x1412E2B50};
+		WEAK symbol<void(lua_State* s, const char* str, unsigned int l)> hksi_lua_pushlstring{0, 0x1400290B0};
+		WEAK symbol<HksObject*(HksObject* result, lua_State* s, const HksObject* table, const HksObject* key)> hks_obj_getfield{0, 0x14009D3C0};
+		WEAK symbol<void(lua_State* s, const HksObject* tbl, const HksObject* key, const HksObject* val)> hks_obj_settable{0, 0x14009E480};
+		WEAK symbol<HksObject* (HksObject* result, lua_State* s, const HksObject* table, const HksObject* key)> hks_obj_gettable{0, 0x14009D800};
+		WEAK symbol<void(lua_State* s, int nargs, int nresults, const unsigned int* pc)> vm_call_internal{0, 0x1400C9EC0};
+		WEAK symbol<HashTable*(lua_State* s, unsigned int arraySize, unsigned int hashSize)> Hashtable_Create{0, 0x14008AAE0};
+		WEAK symbol<cclosure*(lua_State* s, lua_function function, int num_upvalues, 
+			int internal_, int profilerTreatClosureAsFunc)> cclosure_Create{0, 0x14008AD00};
+		WEAK symbol<int(lua_State* s, int t)> hksi_luaL_ref{0, 0x1400A7D60};
+		WEAK symbol<void(lua_State* s, int t, int ref)> hksi_luaL_unref{0, 0x1400A0660};
+	}
 }

src/client/game/ui_scripting/execution.cpp

@@ -0,0 +1,164 @@
+#include <std_include.hpp>
+#include "execution.hpp"
+#include "stack_isolation.hpp"
+#include "component/ui_scripting.hpp"
+
+#include <utils/string.hpp>
+
+namespace ui_scripting
+{
+	void push_value(const script_value& value)
+	{
+		const auto state = *game::hks::lua_state;
+		const auto value_ = value.get_raw();
+		*state->m_apistack.top = value_;
+		state->m_apistack.top++;
+	}
+
+	script_value get_return_value(int offset)
+	{
+		const auto state = *game::hks::lua_state;
+		return state->m_apistack.top[-1 - offset];
+	}
+
+	arguments get_return_values(int count)
+	{
+		arguments values;
+
+		for (auto i = count - 1; i >= 0; i--)
+		{
+			values.push_back(get_return_value(i));
+		}
+
+		if (values.size() == 0)
+		{
+			values.push_back({});
+		}
+
+		return values;
+	}
+
+	arguments call_script_function(const function& function, const arguments& arguments)
+	{
+		const auto state = *game::hks::lua_state;
+
+		stack_isolation _;
+		push_value(function);
+		for (auto i = arguments.begin(); i != arguments.end(); ++i)
+		{
+			push_value(*i);
+		}
+
+		const auto _1 = gsl::finally(&disable_error_hook);
+		enable_error_hook();
+
+		try
+		{
+			game::hks::vm_call_internal(state, static_cast<int>(arguments.size()), -1, 0);
+			const auto count = static_cast<int>(state->m_apistack.top - state->m_apistack.base);
+			return get_return_values(count);
+		}
+		catch (const std::exception& e)
+		{
+			throw std::runtime_error(std::string("Error executing script function: ") + e.what());
+		}
+	}
+
+	script_value get_field(const userdata& self, const script_value& key)
+	{
+		const auto state = *game::hks::lua_state;
+
+		stack_isolation _;
+		push_value(key);
+
+		const auto _1 = gsl::finally(&disable_error_hook);
+		enable_error_hook();
+
+		game::hks::HksObject value{};
+		game::hks::HksObject userdata{};
+		userdata.t = game::hks::TUSERDATA;
+		userdata.v.ptr = self.ptr;
+
+		try
+		{
+			game::hks::hks_obj_gettable(&value, state, &userdata, &state->m_apistack.top[-1]);
+			return value;
+		}
+		catch (const std::exception& e)
+		{
+			throw std::runtime_error(std::string("Error getting userdata field: ") + e.what());
+		}
+	}
+
+	script_value get_field(const table& self, const script_value& key)
+	{
+		const auto state = *game::hks::lua_state;
+
+		stack_isolation _;
+		push_value(key);
+
+		const auto _1 = gsl::finally(&disable_error_hook);
+		enable_error_hook();
+
+		game::hks::HksObject value{};
+		game::hks::HksObject userdata{};
+		userdata.t = game::hks::TTABLE;
+		userdata.v.ptr = self.ptr;
+
+		try
+		{
+			game::hks::hks_obj_gettable(&value, state, &userdata, &state->m_apistack.top[-1]);
+			return value;
+		}
+		catch (const std::exception& e)
+		{
+			throw std::runtime_error(std::string("Error getting table field: ") + e.what());
+		}
+	}
+
+	void set_field(const userdata& self, const script_value& key, const script_value& value)
+	{
+		const auto state = *game::hks::lua_state;
+
+		stack_isolation _;
+
+		const auto _1 = gsl::finally(&disable_error_hook);
+		enable_error_hook();
+
+		game::hks::HksObject userdata{};
+		userdata.t = game::hks::TUSERDATA;
+		userdata.v.ptr = self.ptr;
+
+		try
+		{
+			game::hks::hks_obj_settable(state, &userdata, &key.get_raw(), &value.get_raw());
+		}
+		catch (const std::exception& e)
+		{
+			throw std::runtime_error(std::string("Error setting userdata field: ") + e.what());
+		}
+	}
+
+	void set_field(const table& self, const script_value& key, const script_value& value)
+	{
+		const auto state = *game::hks::lua_state;
+
+		stack_isolation _;
+
+		const auto _1 = gsl::finally(&disable_error_hook);
+		enable_error_hook();
+
+		game::hks::HksObject userdata{};
+		userdata.t = game::hks::TTABLE;
+		userdata.v.ptr = self.ptr;
+
+		try
+		{
+			game::hks::hks_obj_settable(state, &userdata, &key.get_raw(), &value.get_raw());
+		}
+		catch (const std::exception& e)
+		{
+			throw std::runtime_error(std::string("Error setting table field: ") + e.what());
+		}
+	}
+}

src/client/game/ui_scripting/execution.hpp

@@ -0,0 +1,18 @@
+#pragma once
+#include "game/game.hpp"
+#include "types.hpp"
+#include "script_value.hpp"
+
+namespace ui_scripting
+{
+	void push_value(const script_value& value);
+	script_value get_return_value(int offset);
+	arguments get_return_values(int count);
+
+	arguments call_script_function(const function& function, const arguments& arguments);
+
+	script_value get_field(const userdata& self, const script_value& key);
+	script_value get_field(const table& self, const script_value& key);
+	void set_field(const userdata& self, const script_value& key, const script_value& value);
+	void set_field(const table& self, const script_value& key, const script_value& value);
+}

src/client/game/ui_scripting/lua/context.cpp

@@ -0,0 +1,205 @@
+#include <std_include.hpp>
+#include "context.hpp"
+#include "error.hpp"
+#include "value_conversion.hpp"
+#include "../script_value.hpp"
+#include "../execution.hpp"
+
+#include "../../../component/ui_scripting.hpp"
+#include "../../../component/command.hpp"
+
+#include "component/game_console.hpp"
+#include "component/scheduler.hpp"
+
+#include <utils/string.hpp>
+#include <utils/nt.hpp>
+#include <utils/io.hpp>
+
+namespace ui_scripting::lua
+{
+	namespace
+	{
+		void setup_types(sol::state& state, scheduler& scheduler)
+		{
+			struct game
+			{
+			};
+			auto game_type = state.new_usertype<game>("game_");
+			state["game"] = game();
+
+			game_type["ontimeout"] = [&scheduler](const game&, const sol::protected_function& callback,
+			                                      const long long milliseconds)
+			{
+				return scheduler.add(callback, milliseconds, true);
+			};
+
+			game_type["oninterval"] = [&scheduler](const game&, const sol::protected_function& callback,
+			                                       const long long milliseconds)
+			{
+				return scheduler.add(callback, milliseconds, false);
+			};
+
+			auto userdata_type = state.new_usertype<userdata>("userdata_");
+
+			userdata_type["new"] = sol::property(
+				[](const userdata& userdata, const sol::this_state s)
+				{
+					return convert(s, userdata.get("new"));
+				},
+				[](const userdata& userdata, const sol::this_state s, const sol::lua_value& value)
+				{
+					userdata.set("new", convert({s, value}));
+				}
+			);
+
+			
+			userdata_type["get"] = [](const userdata& userdata, const sol::this_state s,
+				const sol::lua_value& key)
+			{
+				return convert(s, userdata.get(convert({s, key})));
+			};
+
+			userdata_type["set"] = [](const userdata& userdata, const sol::this_state s,
+				const sol::lua_value& key, const sol::lua_value& value)
+			{
+				userdata.set(convert({s, key}), convert({s, value}));
+			};
+
+			userdata_type[sol::meta_function::index] = [](const userdata& userdata, const sol::this_state s, 
+				const sol::lua_value& key)
+			{
+				return convert(s, userdata.get(convert({s, key})));
+			};
+
+			userdata_type[sol::meta_function::new_index] = [](const userdata& userdata, const sol::this_state s, 
+				const sol::lua_value& key, const sol::lua_value& value)
+			{
+				userdata.set(convert({s, key }), convert({s, value}));
+			};
+
+			auto table_type = state.new_usertype<table>("table_");
+
+			table_type["new"] = sol::property(
+				[](const table& table, const sol::this_state s)
+				{
+					return convert(s, table.get("new"));
+				},
+				[](const table& table, const sol::this_state s, const sol::lua_value& value)
+				{
+					table.set("new", convert({s, value}));
+				}
+			);
+
+			table_type["get"] = [](const table& table, const sol::this_state s,
+				const sol::lua_value& key)
+			{
+				return convert(s, table.get(convert({s, key})));
+			};
+
+			table_type["set"] = [](const table& table, const sol::this_state s,
+				const sol::lua_value& key, const sol::lua_value& value)
+			{
+				table.set(convert({s, key}), convert({s, value}));
+			};
+
+			table_type[sol::meta_function::index] = [](const table& table, const sol::this_state s,
+				const sol::lua_value& key)
+			{
+				return convert(s, table.get(convert({s, key})));
+			};
+
+			table_type[sol::meta_function::new_index] = [](const table& table, const sol::this_state s,
+				const sol::lua_value& key, const sol::lua_value& value)
+			{
+				table.set(convert({s, key}), convert({s, value}));
+			};
+
+			auto function_type = state.new_usertype<function>("function_");
+
+			function_type[sol::meta_function::call] = [](const function& function, const sol::this_state s, sol::variadic_args va)
+			{
+				arguments arguments{};
+
+				for (auto arg : va)
+				{
+					arguments.push_back(convert({s, arg}));
+				}
+
+				const auto values = function.call(arguments);
+				std::vector<sol::lua_value> returns;
+
+				for (const auto& value : values)
+				{
+					returns.push_back(convert(s, value));
+				}
+
+				return sol::as_returns(returns);
+			};
+
+			state["luiglobals"] = table((*::game::hks::lua_state)->globals.v.table);
+			state["CoD"] = state["luiglobals"]["CoD"];
+			state["LUI"] = state["luiglobals"]["LUI"];
+			state["Engine"] = state["luiglobals"]["Engine"];
+			state["Game"] = state["luiglobals"]["Game"];
+		}
+	}
+
+	context::context(std::string folder)
+		: folder_(std::move(folder))
+		  , scheduler_(state_)
+	{
+		this->state_.open_libraries(sol::lib::base,
+		                            sol::lib::package,
+		                            sol::lib::io,
+		                            sol::lib::string,
+		                            sol::lib::os,
+		                            sol::lib::math,
+		                            sol::lib::table);
+
+		this->state_["include"] = [this](const std::string& file)
+		{
+			this->load_script(file);
+		};
+
+		sol::function old_require = this->state_["require"];
+		auto base_path = utils::string::replace(this->folder_, "/", ".") + ".";
+		this->state_["require"] = [base_path, old_require](const std::string& path)
+		{
+			return old_require(base_path + path);
+		};
+
+		this->state_["scriptdir"] = [this]()
+		{
+			return this->folder_;
+		};
+
+		setup_types(this->state_, this->scheduler_);
+
+		printf("Loading ui script '%s'\n", this->folder_.data());
+		this->load_script("__init__");
+	}
+
+	context::~context()
+	{
+		this->state_.collect_garbage();
+		this->scheduler_.clear();
+		this->state_ = {};
+	}
+
+	void context::run_frame()
+	{
+		this->scheduler_.run_frame();
+		this->state_.collect_garbage();
+	}
+
+	void context::load_script(const std::string& script)
+	{
+		if (!this->loaded_scripts_.emplace(script).second)
+		{
+			return;
+		}
+
+		const auto file = (std::filesystem::path{this->folder_} / (script + ".lua")).generic_string();
+		handle_error(this->state_.safe_script_file(file, &sol::script_pass_on_error));
+	}
+}

src/client/game/ui_scripting/lua/context.hpp

@@ -0,0 +1,36 @@
+#pragma once
+#pragma warning(push)
+#pragma warning(disable: 4702)
+
+#define SOL_ALL_SAFETIES_ON 1
+#define SOL_PRINT_ERRORS 0
+#include <sol/sol.hpp>
+
+#include "scheduler.hpp"
+
+namespace ui_scripting::lua
+{
+	class context
+	{
+	public:
+		context(std::string folder);
+		~context();
+
+		context(context&&) noexcept = delete;
+		context& operator=(context&&) noexcept = delete;
+
+		context(const context&) = delete;
+		context& operator=(const context&) = delete;
+
+		void run_frame();
+
+	private:
+		sol::state state_{};
+		std::string folder_;
+		std::unordered_set<std::string> loaded_scripts_;
+
+		scheduler scheduler_;
+
+		void load_script(const std::string& script);
+	};
+}

src/client/game/ui_scripting/lua/engine.cpp

@@ -0,0 +1,61 @@
+#include <std_include.hpp>
+#include "engine.hpp"
+#include "context.hpp"
+
+#include "../../../component/scheduler.hpp"
+#include "../../../component/ui_scripting.hpp"
+
+#include <utils/io.hpp>
+#include <utils/string.hpp>
+
+namespace ui_scripting::lua::engine
+{
+	namespace
+	{
+		auto& get_scripts()
+		{
+			static std::vector<std::unique_ptr<context>> scripts{};
+			return scripts;
+		}
+
+		void load_scripts(const std::string& script_dir)
+		{
+			if (!utils::io::directory_exists(script_dir))
+			{
+				return;
+			}
+
+			const auto scripts = utils::io::list_files(script_dir);
+
+			for (const auto& script : scripts)
+			{
+				if (std::filesystem::is_directory(script) && utils::io::file_exists(script + "/__init__.lua"))
+				{
+					get_scripts().push_back(std::make_unique<context>(script));
+				}
+			}
+		}
+	}
+
+	void start()
+	{
+		clear_converted_functions();
+		get_scripts().clear();
+		load_scripts("s1x/ui_scripts/");
+		load_scripts("data/ui_scripts/");
+	}
+
+	void stop()
+	{
+		clear_converted_functions();
+		get_scripts().clear();
+	}
+
+	void run_frame()
+	{
+		for (auto& script : get_scripts())
+		{
+			script->run_frame();
+		}
+	}
+}

src/client/game/ui_scripting/lua/engine.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+namespace ui_scripting::lua::engine
+{
+	void start();
+	void stop();
+	void run_frame();
+}

src/client/game/ui_scripting/lua/error.cpp

@@ -0,0 +1,18 @@
+#include <std_include.hpp>
+#include "error.hpp"
+
+namespace ui_scripting::lua
+{
+	void handle_error(const sol::protected_function_result& result)
+	{
+		if (!result.valid())
+		{
+			printf("************** UI Script execution error **************\n");
+
+			const sol::error err = result;
+			printf("%s\n", err.what());
+
+			printf("****************************************************\n");
+		}
+	}
+}

src/client/game/ui_scripting/lua/error.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+#include "context.hpp"
+
+namespace ui_scripting::lua
+{
+	void handle_error(const sol::protected_function_result& result);
+}

src/client/game/ui_scripting/lua/scheduler.cpp

@@ -0,0 +1,122 @@
+#include "std_include.hpp"
+#include "context.hpp"
+#include "error.hpp"
+
+namespace ui_scripting::lua
+{
+	scheduler::scheduler(sol::state& state)
+	{
+		auto task_handle_type = state.new_usertype<task_handle>("task_handle");
+
+		task_handle_type["clear"] = [this](const task_handle& handle)
+		{
+			this->remove(handle);
+		};
+	}
+
+	void scheduler::run_frame()
+	{
+		callbacks_.access([&](task_list& tasks)
+		{
+			this->merge_callbacks();
+
+			for (auto i = tasks.begin(); i != tasks.end();)
+			{
+				const auto now = std::chrono::high_resolution_clock::now();
+				const auto diff = now - i->last_call;
+
+				if (diff < i->delay)
+				{
+					++i;
+					continue;
+				}
+
+				i->last_call = now;
+
+				if (!i->is_deleted)
+				{
+					handle_error(i->callback());
+				}
+
+				if (i->is_volatile || i->is_deleted)
+				{
+					i = tasks.erase(i);
+				}
+				else
+				{
+					++i;
+				}
+			}
+		});
+	}
+
+	void scheduler::clear()
+	{
+		callbacks_.access([&](task_list& tasks)
+		{
+			new_callbacks_.access([&](task_list& new_tasks)
+			{
+				new_tasks.clear();
+				tasks.clear();
+			});
+		});
+	}
+
+	task_handle scheduler::add(const sol::protected_function& callback, const long long milliseconds,
+							   const bool is_volatile)
+	{
+		return this->add(callback, std::chrono::milliseconds(milliseconds), is_volatile);
+	}
+
+	task_handle scheduler::add(const sol::protected_function& callback, const std::chrono::milliseconds delay,
+							   const bool is_volatile)
+	{
+		const uint64_t id = ++this->current_task_id_;
+
+		task task;
+		task.is_volatile = is_volatile;
+		task.callback = callback;
+		task.delay = delay;
+		task.last_call = std::chrono::steady_clock::now();
+		task.id = id;
+		task.is_deleted = false;
+
+		new_callbacks_.access([&task](task_list& tasks)
+		{
+			tasks.emplace_back(std::move(task));
+		});
+
+		return {id};
+	}
+
+	void scheduler::remove(const task_handle& handle)
+	{
+		auto mask_as_deleted = [&](task_list& tasks)
+		{
+			for (auto& task : tasks)
+			{
+				if (task.id == handle.id)
+				{
+					task.is_deleted = true;
+					break;
+				}
+			}
+		};
+
+		callbacks_.access(mask_as_deleted);
+		new_callbacks_.access(mask_as_deleted);
+	}
+
+	void scheduler::merge_callbacks()
+	{
+		callbacks_.access([&](task_list& tasks)
+		{
+			new_callbacks_.access([&](task_list& new_tasks)
+			{
+				tasks.insert(tasks.end(), std::move_iterator<task_list::iterator>(new_tasks.begin()),
+							 std::move_iterator<task_list::iterator>(new_tasks.end()));
+				new_tasks = {};
+			});
+		});
+	}
+}

src/client/game/ui_scripting/lua/scheduler.hpp

@@ -0,0 +1,50 @@
+#pragma once
+#include <utils/concurrency.hpp>
+
+namespace ui_scripting::lua
+{
+	class context;
+
+	class task_handle
+	{
+	public:
+		uint64_t id = 0;
+	};
+
+	class task final : public task_handle
+	{
+	public:
+		std::chrono::steady_clock::time_point last_call{};
+		sol::protected_function callback{};
+		std::chrono::milliseconds delay{};
+		bool is_volatile = false;
+		bool is_deleted = false;
+	};
+
+	class scheduler final
+	{
+	public:
+		scheduler(sol::state& state);
+
+		scheduler(scheduler&&) noexcept = delete;
+		scheduler& operator=(scheduler&&) noexcept = delete;
+
+		scheduler(const scheduler&) = delete;
+		scheduler& operator=(const scheduler&) = delete;
+
+		void run_frame();
+		void clear();
+
+		task_handle add(const sol::protected_function& callback, long long milliseconds, bool is_volatile);
+		task_handle add(const sol::protected_function& callback, std::chrono::milliseconds delay, bool is_volatile);
+
+	private:
+		using task_list = std::vector<task>;
+		utils::concurrency::container<task_list> new_callbacks_;
+		utils::concurrency::container<task_list, std::recursive_mutex> callbacks_;
+		std::atomic_int64_t current_task_id_ = 0;
+
+		void remove(const task_handle& handle);
+		void merge_callbacks();
+	};
+}

src/client/game/ui_scripting/lua/value_conversion.cpp

@@ -0,0 +1,145 @@
+#include <std_include.hpp>
+#include "value_conversion.hpp"
+#include "../execution.hpp"
+#include "../stack_isolation.hpp"
+#include "../../../component/ui_scripting.hpp"
+
+namespace ui_scripting::lua
+{
+	namespace
+	{
+		table convert_table(const sol::table& t)
+		{
+			table res{};
+
+			t.for_each([res](const sol::object& key, const sol::object& value)
+			{
+				res.set(convert(key), convert(value));
+			});
+
+			return res;
+		}
+
+		script_value convert_function(const sol::protected_function& function)
+		{
+			const auto closure = game::hks::cclosure_Create(*game::hks::lua_state, main_function_handler, 0, 0, 0);
+			add_converted_function(closure, function);
+
+			game::hks::HksObject value{};
+			value.t = game::hks::TCFUNCTION;
+			value.v.cClosure = closure;
+
+			return value;
+		}
+	}
+
+	script_value convert(const sol::lua_value& value)
+	{
+		if (value.is<bool>())
+		{
+			return {value.as<bool>()};
+		}
+
+		if (value.is<int>())
+		{
+			return {value.as<int>()};
+		}
+
+		if (value.is<unsigned int>())
+		{
+			return {value.as<unsigned int>()};
+		}
+
+		if (value.is<double>())
+		{
+			return {value.as<double>()};
+		}
+
+		if (value.is<float>())
+		{
+			return {value.as<float>()};
+		}
+
+		if (value.is<std::string>())
+		{
+			return {value.as<std::string>()};
+		}
+
+		if (value.is<lightuserdata>())
+		{
+			return {value.as<lightuserdata>()};
+		}
+
+		if (value.is<userdata>())
+		{
+			return {value.as<userdata>()};
+		}
+
+		if (value.is<table>())
+		{
+			return {value.as<table>()};
+		}
+
+		if (value.is<function>())
+		{
+			return {value.as<function>()};
+		}
+
+		if (value.is<sol::table>())
+		{
+			return {convert_table(value.as<sol::table>())};
+		}
+
+		if (value.is<sol::protected_function>())
+		{
+			return {convert_function(value.as<sol::protected_function>())};
+		}
+
+		return {};
+	}
+
+	sol::lua_value convert(lua_State* state, const script_value& value)
+	{
+		if (value.is<int>())
+		{
+			return {state, value.as<int>()};
+		}
+
+		if (value.is<float>())
+		{
+			return {state, value.as<float>()};
+		}
+
+		if (value.is<bool>())
+		{
+			return {state, value.as<bool>()};
+		}
+
+		if (value.is<std::string>())
+		{
+			return {state, value.as<std::string>()};
+		}
+
+		if (value.is<lightuserdata>())
+		{
+			return {state, value.as<lightuserdata>()};
+		}
+
+		if (value.is<userdata>())
+		{
+			return {state, value.as<userdata>()};
+		}
+
+		if (value.is<table>())
+		{
+			return {state, value.as<table>()};
+		}
+
+		if (value.is<function>())
+		{
+			return {state, value.as<function>()};
+		}
+
+		return {state, sol::lua_nil};
+	}
+}

src/client/game/ui_scripting/lua/value_conversion.hpp

@@ -0,0 +1,9 @@
+#pragma once
+#include "context.hpp"
+#include "../script_value.hpp"
+
+namespace ui_scripting::lua
+{
+	script_value convert(const sol::lua_value& value);
+	sol::lua_value convert(lua_State* state, const script_value& value);
+}

src/client/game/ui_scripting/script_value.cpp

@@ -0,0 +1,274 @@
+#include <std_include.hpp>
+#include "execution.hpp"
+#include "types.hpp"
+#include "stack_isolation.hpp"
+#include "script_value.hpp"
+
+namespace ui_scripting
+{
+	/***************************************************************
+	 * Constructors
+	 **************************************************************/
+
+	script_value::script_value(const game::hks::HksObject& value)
+		: value_(value)
+	{
+	}
+
+	script_value::script_value(const int value)
+	{
+		game::hks::HksObject obj{};
+		obj.t = game::hks::TNUMBER;
+		obj.v.number = static_cast<float>(value);
+
+		this->value_ = obj;
+	}
+
+	script_value::script_value(const unsigned int value)
+	{
+		game::hks::HksObject obj{};
+		obj.t = game::hks::TNUMBER;
+		obj.v.number = static_cast<float>(value);
+
+		this->value_ = obj;
+	}
+
+	script_value::script_value(const bool value)
+	{
+		game::hks::HksObject obj{};
+		obj.t = game::hks::TBOOLEAN;
+		obj.v.boolean = value;
+
+		this->value_ = obj;
+	}
+
+	script_value::script_value(const float value)
+	{
+		game::hks::HksObject obj{};
+		obj.t = game::hks::TNUMBER;
+		obj.v.number = static_cast<float>(value);
+
+		this->value_ = obj;
+	}
+
+	script_value::script_value(const double value)
+		: script_value(static_cast<float>(value))
+	{
+	}
+
+	script_value::script_value(const char* value)
+	{
+		game::hks::HksObject obj{};
+		stack_isolation _;
+
+		const auto state = *game::hks::lua_state;
+		game::hks::hksi_lua_pushlstring(state, value, (unsigned int)strlen(value));
+		obj = state->m_apistack.top[-1];
+
+		this->value_ = obj;
+	}
+
+	script_value::script_value(const std::string& value)
+		: script_value(value.data())
+	{
+	}
+
+	script_value::script_value(const lightuserdata& value)
+	{
+		this->value_.t = game::hks::TLIGHTUSERDATA;
+		this->value_.v.ptr = value.ptr;
+	}
+
+	script_value::script_value(const userdata& value)
+	{
+		this->value_.t = game::hks::TUSERDATA;
+		this->value_.v.ptr = value.ptr;
+	}
+
+	script_value::script_value(const table& value)
+	{
+		this->value_.t = game::hks::TTABLE;
+		this->value_.v.ptr = value.ptr;
+	}
+
+	script_value::script_value(const function& value)
+	{
+		this->value_.t = value.type;
+		this->value_.v.ptr = value.ptr;
+	}
+
+	/***************************************************************
+	 * Integer
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<int>() const
+	{
+		const auto number = this->get_raw().v.number;
+		return this->get_raw().t == game::hks::TNUMBER && static_cast<int>(number) == number;
+	}
+
+	template <>
+	bool script_value::is<unsigned int>() const
+	{
+		return this->is<int>();
+	}
+
+	template <>
+	int script_value::get() const
+	{
+		return static_cast<int>(this->get_raw().v.number);
+	}
+
+	template <>
+	unsigned int script_value::get() const
+	{
+		return static_cast<unsigned int>(this->get_raw().v.number);
+	}
+
+	/***************************************************************
+	 * Boolean
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<bool>() const
+	{
+		return this->get_raw().t == game::hks::TBOOLEAN;
+	}
+
+	template <>
+	bool script_value::get() const
+	{
+		return this->get_raw().v.boolean;
+	}
+
+	/***************************************************************
+	 * Float
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<float>() const
+	{
+		return this->get_raw().t == game::hks::TNUMBER;
+	}
+
+	template <>
+	bool script_value::is<double>() const
+	{
+		return this->is<float>();
+	}
+
+	template <>
+	float script_value::get() const
+	{
+		return this->get_raw().v.number;
+	}
+
+	template <>
+	double script_value::get() const
+	{
+		return static_cast<double>(this->get_raw().v.number);
+	}
+
+	/***************************************************************
+	 * String
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<const char*>() const
+	{
+		return this->get_raw().t == game::hks::TSTRING;
+	}
+
+	template <>
+	bool script_value::is<std::string>() const
+	{
+		return this->is<const char*>();
+	}
+
+	template <>
+	const char* script_value::get() const
+	{
+		return this->get_raw().v.str->m_data;
+	}
+
+	template <>
+	std::string script_value::get() const
+	{
+		return this->get<const char*>();
+	}
+
+	/***************************************************************
+	 * Lightuserdata
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<lightuserdata>() const
+	{
+		return this->get_raw().t == game::hks::TLIGHTUSERDATA;
+	}
+
+	template <>
+	lightuserdata script_value::get() const
+	{
+		return this->get_raw().v.ptr;
+	}
+
+	/***************************************************************
+	 * Userdata
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<userdata>() const
+	{
+		return this->get_raw().t == game::hks::TUSERDATA;
+	}
+
+	template <>
+	userdata script_value::get() const
+	{
+		return this->get_raw().v.ptr;
+	}
+
+	/***************************************************************
+	 * Table
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<table>() const
+	{
+		return this->get_raw().t == game::hks::TTABLE;
+	}
+
+	template <>
+	table script_value::get() const
+	{
+		return this->get_raw().v.table;
+	}
+
+	/***************************************************************
+	 * Function
+	 **************************************************************/
+
+	template <>
+	bool script_value::is<function>() const
+	{
+		return this->get_raw().t == game::hks::TIFUNCTION
+			|| this->get_raw().t == game::hks::TCFUNCTION;
+	}
+
+	template <>
+	function script_value::get() const
+	{
+		return {this->get_raw().v.cClosure, this->get_raw().t};
+	}
+
+	/***************************************************************
+	 *
+	 **************************************************************/
+
+	const game::hks::HksObject& script_value::get_raw() const
+	{
+		return this->value_;
+	}
+}

src/client/game/ui_scripting/script_value.hpp

@@ -0,0 +1,56 @@
+#pragma once
+#include "game/game.hpp"
+
+namespace ui_scripting
+{
+	class lightuserdata;
+	class userdata;
+	class table;
+	class function;
+
+	class script_value
+	{
+	public:
+		script_value() = default;
+		script_value(const game::hks::HksObject& value);
+
+		script_value(int value);
+		script_value(unsigned int value);
+		script_value(bool value);
+
+		script_value(float value);
+		script_value(double value);
+
+		script_value(const char* value);
+		script_value(const std::string& value);
+
+		script_value(const lightuserdata& value);
+		script_value(const userdata& value);
+		script_value(const table& value);
+		script_value(const function& value);
+
+		template <typename T>
+		bool is() const;
+
+		template <typename T>
+		T as() const
+		{
+			if (!this->is<T>())
+			{
+				throw std::runtime_error("Invalid type");
+			}
+
+			return get<T>();
+		}
+
+		const game::hks::HksObject& get_raw() const;
+
+	private:
+		template <typename T>
+		T get() const;
+
+		game::hks::HksObject value_{};
+	};
+
+	using arguments = std::vector<script_value>;
+}

src/client/game/ui_scripting/stack_isolation.cpp

@@ -0,0 +1,30 @@
+#include <std_include.hpp>
+#include "stack_isolation.hpp"
+
+namespace ui_scripting
+{
+	stack_isolation::stack_isolation()
+	{
+		const auto state = *game::hks::lua_state;
+
+		this->top_ = state->m_apistack.top;
+		this->base_ = state->m_apistack.base;
+		this->alloc_top_ = state->m_apistack.alloc_top;
+		this->bottom_ = state->m_apistack.bottom;
+
+		state->m_apistack.top = this->stack_;
+		state->m_apistack.base = state->m_apistack.top;
+		state->m_apistack.alloc_top = &this->stack_[ARRAYSIZE(this->stack_) - 1];
+		state->m_apistack.bottom = state->m_apistack.top;
+	}
+
+	stack_isolation::~stack_isolation()
+	{
+		const auto state = *game::hks::lua_state;
+
+		state->m_apistack.top = this->top_;
+		state->m_apistack.base = this->base_;
+		state->m_apistack.alloc_top = this->alloc_top_;
+		state->m_apistack.bottom = this->bottom_;
+	}
+}

src/client/game/ui_scripting/stack_isolation.hpp

@@ -0,0 +1,25 @@
+#pragma once
+#include "game/game.hpp"
+
+namespace ui_scripting
+{
+	class stack_isolation final
+	{
+	public:
+		stack_isolation();
+		~stack_isolation();
+
+		stack_isolation(stack_isolation&&) = delete;
+		stack_isolation(const stack_isolation&) = delete;
+		stack_isolation& operator=(stack_isolation&&) = delete;
+		stack_isolation& operator=(const stack_isolation&) = delete;
+
+	private:
+		game::hks::HksObject stack_[512]{};
+
+		game::hks::HksObject* top_;
+		game::hks::HksObject* base_;
+		game::hks::HksObject* alloc_top_;
+		game::hks::HksObject* bottom_;
+	};
+}

src/client/game/ui_scripting/types.cpp

@@ -0,0 +1,142 @@
+#include <std_include.hpp>
+#include "types.hpp"
+#include "execution.hpp"
+#include "stack_isolation.hpp"
+
+namespace ui_scripting
+{
+	/***************************************************************
+	 * Lightuserdata
+	 **************************************************************/
+
+	lightuserdata::lightuserdata(void* ptr_)
+		: ptr(ptr_)
+	{
+	}
+
+	/***************************************************************
+	 * Userdata
+	 **************************************************************/
+
+	userdata::userdata(void* ptr_)
+		: ptr(ptr_)
+	{
+	}
+
+	void userdata::set(const script_value& key, const script_value& value) const
+	{
+		set_field(*this, key, value);
+	}
+
+	script_value userdata::get(const script_value& key) const
+	{
+		return get_field(*this, key);
+	}
+
+	/***************************************************************
+	 * Table
+	 **************************************************************/
+
+	table::table()
+	{
+		const auto state = *game::hks::lua_state;
+		this->ptr = game::hks::Hashtable_Create(state, 0, 0);
+	}
+
+	table::table(game::hks::HashTable* ptr_)
+		: ptr(ptr_)
+	{
+	}
+
+	void table::set(const script_value& key, const script_value& value) const
+	{
+		set_field(*this, key, value);
+	}
+
+	script_value table::get(const script_value& key) const
+	{
+		return get_field(*this, key);
+	}
+
+	/***************************************************************
+	 * Function
+	 **************************************************************/
+
+	function::function(game::hks::cclosure* ptr_, game::hks::HksObjectType type_)
+		: ptr(ptr_)
+		, type(type_)
+	{
+		this->add();
+	}
+
+	function::function(const function& other) : function(other.ptr, other.type)
+	{
+		this->ref = other.ref;
+	}
+
+	function::function(function&& other) noexcept
+	{
+		this->ptr = other.ptr;
+		this->type = other.type;
+		this->ref = other.ref;
+		other.ref = 0;
+	}
+
+	function::~function()
+	{
+		this->release();
+	}
+
+	function& function::operator=(const function& other)
+	{
+		if (&other != this)
+		{
+			this->release();
+			this->ptr = other.ptr;
+			this->type = other.type;
+			this->ref = other.ref;
+			this->add();
+		}
+
+		return *this;
+	}
+
+	function& function::operator=(function&& other) noexcept
+	{
+		if (&other != this)
+		{
+			this->release();
+			this->ptr = other.ptr;
+			this->type = other.type;
+			this->ref = other.ref;
+			other.ref = 0;
+		}
+
+		return *this;
+	}
+
+	void function::add()
+	{
+		game::hks::HksObject value{};
+		value.v.cClosure = this->ptr;
+		value.t = this->type;
+
+		stack_isolation _;
+		push_value(value);
+
+		this->ref = game::hks::hksi_luaL_ref(*game::hks::lua_state, -10000);
+	}
+
+	void function::release()
+	{
+		if (this->ref)
+		{
+			game::hks::hksi_luaL_unref(*game::hks::lua_state, -10000, this->ref);
+		}
+	}
+
+	arguments function::call(const arguments& arguments) const
+	{
+		return call_script_function(*this, arguments);
+	}
+}

src/client/game/ui_scripting/types.hpp

@@ -0,0 +1,61 @@
+#pragma once
+#include "game/game.hpp"
+#include "script_value.hpp"
+
+namespace ui_scripting
+{
+	class lightuserdata
+	{
+	public:
+		lightuserdata(void*);
+		void* ptr;
+	};
+
+	class userdata
+	{
+	public:
+		userdata(void*);
+
+		script_value get(const script_value& key) const;
+		void set(const script_value& key, const script_value& value) const;
+
+		void* ptr;
+	};
+
+	class table
+	{
+	public:
+		table();
+		table(game::hks::HashTable* ptr_);
+
+		script_value get(const script_value& key) const;
+		void set(const script_value& key, const script_value& value) const;
+
+		game::hks::HashTable* ptr;
+	};
+
+	class function
+	{
+	public:
+		function(game::hks::cclosure*, game::hks::HksObjectType);
+
+		function(const function& other);
+		function(function&& other) noexcept;
+
+		~function();
+
+		function& operator=(const function& other);
+		function& operator=(function&& other) noexcept;
+
+		arguments call(const arguments& arguments) const;
+
+		game::hks::cclosure* ptr;
+		game::hks::HksObjectType type;
+
+	private:
+		void add();
+		void release();
+
+		int ref;
+	};
+}