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#define LUA_USE_POSIX
#include "cPlugin_NewLua.h"
#include "cMCLogger.h"
extern "C"
{
#include "lualib.h"
}
#include "tolua++.h"
#include "Bindings.h"
#include "ManualBindings.h"
#ifdef _WIN32
#include "wdirent.h"
#else
#include <dirent.h>
#endif
extern bool report_errors(lua_State* lua, int status);
cPlugin_NewLua::cPlugin_NewLua( const char* a_PluginName )
: m_LuaState( 0 )
{
m_Directory = a_PluginName;
}
cPlugin_NewLua::~cPlugin_NewLua()
{
if( m_LuaState )
{
lua_close( m_LuaState );
m_LuaState = 0;
}
}
bool cPlugin_NewLua::Initialize()
{
if( !m_LuaState )
{
m_LuaState = lua_open();
luaL_openlibs( m_LuaState );
tolua_AllToLua_open(m_LuaState);
ManualBindings::Bind( m_LuaState );
}
std::string PluginPath = std::string("Plugins/") + m_Directory + "/";
// Load all files for this plugin, and execute them
DIR* dp;
struct dirent *entry;
if(dp = opendir( PluginPath.c_str() ))
{
while(entry = readdir(dp))
{
std::string FileName = entry->d_name;
if( FileName.find(".lua") != std::string::npos )
{
std::string Path = PluginPath + FileName;
int s = luaL_loadfile(m_LuaState, Path.c_str() );
if( report_errors( m_LuaState, s ) )
{
LOGERROR("Can't load plugin %s because of an error in file %s", m_Directory.c_str(), Path.c_str() );
lua_close( m_LuaState );
m_LuaState = 0;
return false;
}
s = lua_pcall(m_LuaState, 0, LUA_MULTRET, 0);
if( report_errors( m_LuaState, s ) )
{
LOGERROR("Error in plugin %s in file %s", m_Directory.c_str(), Path.c_str() );
lua_close( m_LuaState );
m_LuaState = 0;
return false;
}
}
}
}
// Call intialize function
lua_getglobal(m_LuaState, "Initialize");
if(!lua_isfunction(m_LuaState,-1))
{
LOGWARN("Error in plugin %s: Could not find function Initialize()", m_Directory.c_str() );
lua_pop(m_LuaState,1);
lua_close( m_LuaState );
m_LuaState = 0;
return false;
}
tolua_pushusertype(m_LuaState, this, "cPlugin_NewLua");
// do the call (1 arguments, 1 result)
int s = lua_pcall(m_LuaState, 1, 1, 0);
if( report_errors( m_LuaState, s ) )
{
LOGWARN("Error in plugin %s calling function Initialize()", m_Directory.c_str() );
lua_close( m_LuaState );
m_LuaState = 0;
return false;
}
if( !lua_isboolean( m_LuaState, -1 ) )
{
LOGWARN("Error in plugin %s Initialize() must return a boolean value!", m_Directory.c_str() );
lua_close( m_LuaState );
m_LuaState = 0;
return false;
}
bool bSuccess = (tolua_toboolean( m_LuaState, -1, 0) > 0);
return bSuccess;
}
void cPlugin_NewLua::Tick(float a_Dt)
{
lua_getglobal(m_LuaState, "Tick");
if(!lua_isfunction(m_LuaState,-1))
{
LOGWARN("Error in plugin %s: Could not find function Tick()", m_Directory.c_str() );
lua_pop(m_LuaState,1);
return;
}
tolua_pushnumber( m_LuaState, a_Dt );
// do the call (1 arguments, 0 result)/
int s = lua_pcall(m_LuaState, 1, 0, 0);
if( report_errors( m_LuaState, s ) )
{
LOGWARN("Error in plugin %s calling function Tick()", m_Directory.c_str() );
}
}
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