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/**
* @file
* @brief Level and branch bindings (library "dgn").
**/
#include "AppHdr.h"
#include "cluautil.h"
#include "l_libs.h"
#include "branch.h"
#include "player.h"
#define BRANCH(br, pos) \
const char *branch_name = luaL_checkstring(ls, pos); \
branch_type req_branch_type = str_to_branch(branch_name); \
if (req_branch_type == NUM_BRANCHES) \
luaL_error(ls, "Expected branch name"); \
const Branch &br = branches[req_branch_type]
#define BRANCHFN(name, type, expr) \
LUAFN(dgn_br_##name) { \
BRANCH(br, 1); \
PLUARET(type, expr); \
}
BRANCHFN(floorcol, number, br.floor_colour)
BRANCHFN(rockcol, number, br.rock_colour)
BRANCHFN(has_uniques, boolean, br.has_uniques)
BRANCHFN(parent_branch, string,
br.parent_branch == NUM_BRANCHES
? ""
: branches[parent_branch(br.id)].abbrevname)
LUAFN(dgn_br_depth)
{
branch_type brn = you.where_are_you;
if (lua_gettop(ls) == 1)
{
const char *branch_name = luaL_checkstring(ls, 1);
brn = str_to_branch(branch_name);
if (brn == NUM_BRANCHES)
luaL_argerror(ls, 1, "No such branch");
}
PLUARET(number, brdepth[brn]);
}
LUAFN(dgn_br_exists)
{
branch_type brn = you.where_are_you;
if (lua_gettop(ls) == 1)
{
const char *branch_name = luaL_checkstring(ls, 1);
brn = str_to_branch(branch_name);
if (brn == NUM_BRANCHES)
luaL_argerror(ls, 1, "No such branch");
}
PLUARET(boolean, brn == root_branch
|| !is_connected_branch(brn)
|| brentry[brn].is_valid());
}
static void _push_level_id(lua_State *ls, const level_id &lid)
{
// [ds] Should really set up a metatable to delete (FIXME).
level_id *nlev = static_cast<level_id*>(
lua_newuserdata(ls, sizeof(level_id)));
new (nlev) level_id(lid);
}
LUAFN(dgn_br_entrance)
{
const int nargs = lua_gettop(ls);
branch_type brn = you.where_are_you;
if (nargs == 1)
{
const char *branch_name = luaL_checkstring(ls, 1);
brn = str_to_branch(branch_name);
if (brn == NUM_BRANCHES)
luaL_argerror(ls, 1, "No such branch");
}
_push_level_id(ls, brentry[brn]);
return 1;
}
level_id dlua_level_id(lua_State *ls, int ndx)
{
if (lua_isstring(ls, ndx))
{
const char *s = lua_tostring(ls, 1);
try
{
return level_id::parse_level_id(s);
}
catch (const string &err)
{
luaL_error(ls, err.c_str());
}
}
else if (lua_isuserdata(ls, ndx))
{
const level_id *lid = static_cast<level_id*>(lua_touserdata(ls, ndx));
return *lid;
}
luaL_argerror(ls, ndx, "Expected level_id");
// Never gets here.
return level_id();
}
LUAFN(dgn_level_id)
{
const int nargs = lua_gettop(ls);
if (!nargs)
_push_level_id(ls, level_id::current());
else if (nargs == 1)
_push_level_id(ls, dlua_level_id(ls, 1));
return 1;
}
LUAFN(dgn_level_name)
{
const level_id lid(dlua_level_id(ls, 1));
lua_pushstring(ls, lid.describe().c_str());
return 1;
}
const struct luaL_reg dgn_level_dlib[] =
{
{ "br_floorcol", dgn_br_floorcol },
{ "br_rockcol", dgn_br_rockcol },
{ "br_has_uniques", dgn_br_has_uniques },
{ "br_parent_branch", dgn_br_parent_branch },
{ "br_depth", dgn_br_depth },
{ "br_exists", dgn_br_exists },
{ "br_entrance", dgn_br_entrance },
{ "level_id", dgn_level_id },
{ "level_name", dgn_level_name },
{ NULL, NULL }
};
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