/* ScummVM - Graphic Adventure Engine * * ScummVM is the legal property of its developers, whose names * are too numerous to list here. Please refer to the COPYRIGHT * file distributed with this source distribution. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ #ifndef HDB_LUA_SCRIPT_H #define HDB_LUA_SCRIPT_H struct lua_State; namespace HDB { struct Global { char global[32]; // name of global variable int valueOrString; // value = 0, string = 1 double value; // value char string[32]; // string Global() : valueOrString(0), value(0) { global[0] = 0; string[0] = 0; } }; class LuaScript { public: LuaScript(); ~LuaScript(); bool loadLua(const char *name); void saveGlobalNumber(const char *global, double value); void saveGlobalString(const char *global, const char *string); void loadGlobal(const char *global); void purgeGlobals(); void save(Common::OutSaveFile *out); void loadSaveFile(Common::InSaveFile *in); void init(); bool initScript(Common::SeekableReadStream *stream, const char *scriptName, int32 length); void pushInt(int value); void pushString(char *string); void pushFunction(char *func); void call(int args, int returns); bool callFunction(const char *name, int returns); void invokeLuaFunction(char *luaFunc, int x, int y, int value1, int value2); bool executeMPC(Common::SeekableReadStream *stream, const char *name, const char *scriptName, int32 length); bool executeFile(const Common::String &filename); bool executeChunk(Common::String &chunk, const Common::String &chunkName) const; void checkParameters(const char *func, int params); const char *getStringOffStack(); void setLuaGlobalValue(const char *name, int value); bool isValid() { return _systemInit; } // Platform-specific Constants int _cameraXOff; int _cameraYOff; private: lua_State *_state; int _pcallErrorhandlerRegistryIndex; Common::SeekableReadStream* _globalLuaStream; int32 _globalLuaLength; bool _systemInit; bool registerExtensions(); void stripComments(char *chunk); void addPatches(Common::String &chunk, const char *scriptName); Common::Array _globals; }; void lua_printstack(lua_State *L); } #endif // !HDB_LUA_SCRIPT_H