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{* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*}
unit ULuaUsdx;
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
{$I switches.inc}
uses ULua;
{ some basic lua c functions from usdx table }
{ Usdx.Time - returns sdl_time to have time numbers comparable with
ultrastar deluxe ones. no arguments }
function ULuaUsdx_Time(L: Plua_State): Integer; cdecl;
{ Usdx.Version - returns Usdx version string (the same that US_Version
language-constant does). no arguments }
function ULuaUsdx_Version(L: Plua_State): Integer; cdecl;
{ Usdx.Hook - returns an hook table with name and Unhook function
arguments: event_name: string }
function ULuaUsdx_Hook(L: Plua_State): Integer; cdecl;
const
ULuaUsdx_Lib_f: array [0..3] of lual_reg = (
(name:'Version'; func:ULuaUsdx_Version),
(name:'Time'; func:ULuaUsdx_Time),
(name:'Hook'; func:ULuaUsdx_Hook),
(name:nil; func:nil)
);
implementation
uses SDL, ULuaCore, UHookableEvent, UConfig;
{ Usdx.Time - returns sdl_time to have time numbers comparable with
ultrastar deluxe ones. no arguments }
function ULuaUsdx_Time(L: Plua_State): Integer; cdecl;
var top: Integer;
begin
//remove arguments (if any)
top := lua_gettop(L);
If (top > 0) then
lua_pop(L, top);
//push result
lua_pushinteger(L, SDL_GetTicks);
Result := 1; //one result
end;
{ Usdx.Version - returns Usdx version string (the same that US_Version
language-constant does). no arguments }
function ULuaUsdx_Version(L: Plua_State): Integer; cdecl;
var top: Integer;
begin
//remove arguments (if any)
top := lua_gettop(L);
If (top > 0) then
lua_pop(L, top);
//push result
lua_pushstring(L, PChar(USDXVersionStr()));
Result := 1; //one result
end;
{ Usdx.Hook - returns an hook table with name and Unhook function
arguments: event_name: string; function_name: string }
function ULuaUsdx_Hook(L: Plua_State): Integer; cdecl;
var
EventName: String;
FunctionName: String;
ParentId: Integer;
Event: THookableEvent;
begin
EventName := luaL_checkstring(L, 1);
FunctionName := luaL_checkstring(L, 2);
lua_checkstack(L, 1);
lua_getfield (L, LUA_REGISTRYINDEX, '_USDX_STATE_ID');
if (not lua_isNumber(L, -1)) then
luaL_error(L, 'unable to get _USDX_STATE_ID in ULuaUsdx_Hook');
ParentId := lua_toInteger(L, -1);
lua_pop(L, lua_gettop(L)); //clear stack
Result := 1;
Event := LuaCore.GetEventByName(EventName);
if (Event <> nil) then
begin
Event.Hook(L, ParentId, FunctionName);
end
else
luaL_error(L, PChar('event does not exist: ' + EventName));
end;
end.
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