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#include "AppHdr.h"
#include "clua.h"
#include "l_libs.h"
#include "options.h"
////////////////////////////////////////////////////////////////
// Option handling
typedef int (*ohandler)(lua_State *ls, const char *name, void *data, bool get);
struct option_handler
{
const char *option;
void *data;
ohandler handler;
};
static int option_hboolean(lua_State *ls, const char *name, void *data,
bool get)
{
if (get)
{
lua_pushboolean(ls, *static_cast<bool*>(data));
return 1;
}
else
{
if (lua_isboolean(ls, 3))
*static_cast<bool*>(data) = lua_toboolean(ls, 3);
return 0;
}
}
static int option_autopick(lua_State *ls, const char *name, void *data,
bool get)
{
lua_pushboolean(ls, Options.autopickup_on>0);
return 1;
}
static option_handler handlers[] =
{
// Boolean options come first
{ "autoswitch", &Options.auto_switch, option_hboolean },
{ "show_uncursed", &Options.show_uncursed, option_hboolean },
{ "travel_open_doors", &Options.travel_open_doors, option_hboolean },
{ "easy_armour", &Options.easy_unequip, option_hboolean },
{ "easy_unequip", &Options.easy_unequip, option_hboolean },
{ "note_skill_max", &Options.note_skill_max, option_hboolean },
{ "clear_messages", &Options.clear_messages, option_hboolean },
{ "no_dark_brand", &Options.no_dark_brand, option_hboolean },
{ "pickup_thrown", &Options.pickup_thrown, option_hboolean },
{ "show_waypoints", &Options.show_waypoints, option_hboolean },
{ "easy_exit_menu", &Options.easy_exit_menu, option_hboolean },
{ "dos_use_background_intensity", &Options.dos_use_background_intensity,
option_hboolean },
{ "autopick_on", NULL, option_autopick }
};
static const option_handler *get_handler(const char *optname)
{
if (optname)
{
for (int i = 0, count = ARRAYSZ(handlers); i < count; ++i)
{
if (!strcmp(handlers[i].option, optname))
return &handlers[i];
}
}
return NULL;
}
static int option_get(lua_State *ls)
{
const char *opt = luaL_checkstring(ls, 2);
if (!opt)
return 0;
// Is this a Lua named option?
game_options::opt_map::iterator i = Options.named_options.find(opt);
if (i != Options.named_options.end())
{
const string &ov = i->second;
lua_pushstring(ls, ov.c_str());
return 1;
}
const option_handler *oh = get_handler(opt);
if (oh)
#ifdef DEBUG_GLOBALS
return oh->handler(ls, opt, (char*)real_Options+(intptr_t)oh->data, true);
#else
return oh->handler(ls, opt, oh->data, true);
#endif
return 0;
}
static int option_set(lua_State *ls)
{
const char *opt = luaL_checkstring(ls, 2);
if (!opt)
return 0;
const option_handler *oh = get_handler(opt);
if (oh)
oh->handler(ls, opt, oh->data, false);
return 0;
}
#define OPT_METATABLE "clua_metatable_optaccess"
void cluaopen_options(lua_State *ls)
{
int top = lua_gettop(ls);
luaL_newmetatable(ls, OPT_METATABLE);
lua_pushstring(ls, "__index");
lua_pushcfunction(ls, option_get);
lua_settable(ls, -3);
luaL_getmetatable(ls, OPT_METATABLE);
lua_pushstring(ls, "__newindex");
lua_pushcfunction(ls, option_set);
lua_settable(ls, -3);
lua_settop(ls, top);
// Create dummy userdata to front for our metatable
int *dummy = static_cast<int *>(lua_newuserdata(ls, sizeof(int)));
// Mystic number
*dummy = 42;
luaL_getmetatable(ls, OPT_METATABLE);
lua_setmetatable(ls, -2);
lua_setglobal(ls, "options");
}
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