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/* 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 {
enum {
kCameraXOff = (32 * 3 + 24), // 3.75 Tiles Extra
kCameraYOff = (32 * 2 + 16) // 2.50 Tiles Extra
};
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);
bool 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;
}
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<Global *> _globals;
};
void lua_printstack(lua_State *L);
}
#endif // !HDB_LUA_SCRIPT_H
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