113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
#include "lua_hook.h"
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#include "functions/functions.h"
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#include <MinHook.h>
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#include <windows.h>
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// Resolved function pointers
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fn_lua_open real_lua_open = nullptr;
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fn_lua_pushstring pfn_pushstring = nullptr;
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fn_lua_pushcclosure pfn_pushcclosure = nullptr;
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fn_lua_settable pfn_settable = nullptr;
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fn_lua_tostring pfn_tostring = nullptr;
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fn_lua_tonumber pfn_tonumber = nullptr;
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fn_lua_newtable pfn_newtable = nullptr;
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fn_lua_rawseti pfn_rawseti = nullptr;
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fn_GetPlayerByIndex pfn_get_player_by_index = nullptr;
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void* g_player_list = nullptr;
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fn_PlayerWrapperCreate pfn_player_wrapper_create = nullptr;
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fn_GetScriptFromState pfn_get_script_from_state = nullptr;
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fn_MapVarToLua pfn_map_var_to_lua = nullptr;
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fn_AddTutorialText pfn_add_tutorial_text = nullptr;
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fn_RemoveTutorialText pfn_remove_tutorial_text = nullptr;
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void* g_command_bar = nullptr;
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fn_DebugPrint pfn_debug_print = nullptr;
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void register_global(lua_State* L, const char* name, lua_CFunction fn) {
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pfn_pushstring(L, name);
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pfn_pushcclosure(L, fn, 0);
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pfn_settable(L, LUA_GLOBALSINDEX);
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}
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// Fired every time the game creates a new Lua state
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static lua_State* Hook_lua_open() {
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lua_State* L = real_lua_open();
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if (!L) {
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return L;
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}
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Register_All(L);
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return L;
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}
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bool LuaHook_Init() {
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char exePath[MAX_PATH];
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GetModuleFileNameA(nullptr, exePath, MAX_PATH);
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const LuaRVAs* rvas = nullptr;
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if (strstr(exePath, "StarWarsI.exe"))
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rvas = &RVAs_StarWarsI;
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else if (strstr(exePath, "StarWarsG.exe"))
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rvas = &RVAs_StarWarsG;
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else
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return false;
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if (!rvas->lua_open || !rvas->lua_pushstring || !rvas->lua_pushcclosure ||
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!rvas->lua_settable || !rvas->lua_tostring)
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return false;
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uintptr_t base = (uintptr_t)GetModuleHandleA(nullptr);
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pfn_pushstring = (fn_lua_pushstring)(base + rvas->lua_pushstring);
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pfn_pushcclosure = (fn_lua_pushcclosure)(base + rvas->lua_pushcclosure);
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pfn_settable = (fn_lua_settable)(base + rvas->lua_settable);
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pfn_tostring = (fn_lua_tostring)(base + rvas->lua_tostring);
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if (rvas->lua_tonumber && rvas->get_player_by_index && rvas->player_list &&
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rvas->player_wrapper_create && rvas->get_script_from_state && rvas->map_var_to_lua)
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{
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pfn_tonumber = (fn_lua_tonumber)(base + rvas->lua_tonumber);
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pfn_get_player_by_index = (fn_GetPlayerByIndex)(base + rvas->get_player_by_index);
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g_player_list = (void*)(base + rvas->player_list);
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pfn_player_wrapper_create = (fn_PlayerWrapperCreate)(base + rvas->player_wrapper_create);
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pfn_get_script_from_state = (fn_GetScriptFromState)(base + rvas->get_script_from_state);
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pfn_map_var_to_lua = (fn_MapVarToLua)(base + rvas->map_var_to_lua);
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}
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if (rvas->command_bar && rvas->add_tutorial_text && rvas->remove_tutorial_text) {
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g_command_bar = (void*)(base + rvas->command_bar);
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pfn_add_tutorial_text = (fn_AddTutorialText)(base + rvas->add_tutorial_text);
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pfn_remove_tutorial_text = (fn_RemoveTutorialText)(base + rvas->remove_tutorial_text);
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}
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if (rvas->debug_print)
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pfn_debug_print = (fn_DebugPrint)(base + rvas->debug_print);
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if (rvas->lua_newtable && rvas->lua_rawseti) {
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pfn_newtable = (fn_lua_newtable)(base + rvas->lua_newtable);
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pfn_rawseti = (fn_lua_rawseti)(base + rvas->lua_rawseti);
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}
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void* const target = (void*)(base + rvas->lua_open);
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if (MH_Initialize() != MH_OK) {
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return false;
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}
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if (MH_CreateHook(target, &Hook_lua_open, (void**)&real_lua_open) != MH_OK) {
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return false;
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}
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if (MH_EnableHook(target) != MH_OK) {
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return false;
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}
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return true;
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}
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void LuaHook_Shutdown() {
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MH_DisableHook(MH_ALL_HOOKS);
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MH_Uninitialize();
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}
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