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/* Copyright (C) 2018 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_MAPGENERATOR
#define INCLUDED_MAPGENERATOR
#include "ps/FileIo.h"
#include "ps/ThreadUtil.h"
#include "ps/TemplateLoader.h"
#include "scriptinterface/ScriptInterface.h"
#include <boost/random/linear_congruential.hpp>
#include <set>
#include <string>
class CMapGeneratorWorker;
/**
* Random map generator interface. Initialized by CMapReader and then checked
* periodically during loading, until it's finished (progress value is 0).
*
* The actual work is performed by CMapGeneratorWorker in a separate thread.
*/
class CMapGenerator
{
NONCOPYABLE(CMapGenerator);
public:
CMapGenerator();
~CMapGenerator();
/**
* Start the map generator thread
*
* @param scriptFile The VFS path for the script, e.g. "maps/random/latium.js"
* @param settings JSON string containing settings for the map generator
*/
void GenerateMap(const VfsPath& scriptFile, const std::string& settings);
/**
* Get status of the map generator thread
*
* @return Progress percentage 1-100 if active, 0 when finished, or -1 on error
*/
int GetProgress();
/**
* Get random map data, according to this format:
* http://trac.wildfiregames.com/wiki/Random_Map_Generator_Internals#Dataformat
*
* @return StructuredClone containing map data
*/
shared_ptr<ScriptInterface::StructuredClone> GetResults();
private:
CMapGeneratorWorker* m_Worker;
};
/**
* Random map generator worker thread.
* (This is run in a thread so that the GUI remains responsive while loading)
*
* Thread-safety:
* - Initialize and constructor/destructor must be called from the main thread.
* - ScriptInterface created and destroyed by thread
* - StructuredClone used to return JS map data - JS:Values can't be used across threads/runtimes.
*/
class CMapGeneratorWorker
{
public:
CMapGeneratorWorker();
~CMapGeneratorWorker();
/**
* Start the map generator thread
*
* @param scriptFile The VFS path for the script, e.g. "maps/random/latium.js"
* @param settings JSON string containing settings for the map generator
*/
void Initialize(const VfsPath& scriptFile, const std::string& settings);
/**
* Get status of the map generator thread
*
* @return Progress percentage 1-100 if active, 0 when finished, or -1 on error
*/
int GetProgress();
/**
* Get random map data, according to this format:
* http://trac.wildfiregames.com/wiki/Random_Map_Generator_Internals#Dataformat
*
* @return StructuredClone containing map data
*/
shared_ptr<ScriptInterface::StructuredClone> GetResults();
private:
// Mapgen
/**
* Load all scripts of the given library
*
* @param libraryName String specifying name of the library (subfolder of ../maps/random/)
* @return true if all scripts ran successfully, false if there's an error
*/
bool LoadScripts(const std::wstring& libraryName);
// callbacks for script functions
static bool LoadLibrary(ScriptInterface::CxPrivate* pCxPrivate, const std::wstring& name);
static void ExportMap(ScriptInterface::CxPrivate* pCxPrivate, JS::HandleValue data);
static JS::Value LoadHeightmap(ScriptInterface::CxPrivate* pCxPrivate, const std::wstring& src);
static JS::Value LoadMapTerrain(ScriptInterface::CxPrivate* pCxPrivate, const std::string& filename);
static void SetProgress(ScriptInterface::CxPrivate* pCxPrivate, int progress);
static CParamNode GetTemplate(ScriptInterface::CxPrivate* pCxPrivate, const std::string& templateName);
static bool TemplateExists(ScriptInterface::CxPrivate* pCxPrivate, const std::string& templateName);
static std::vector<std::string> FindTemplates(ScriptInterface::CxPrivate* pCxPrivate, const std::string& path, bool includeSubdirectories);
static std::vector<std::string> FindActorTemplates(ScriptInterface::CxPrivate* pCxPrivate, const std::string& path, bool includeSubdirectories);
static int GetTerrainTileSize(ScriptInterface::CxPrivate* pCxPrivate);
std::set<std::wstring> m_LoadedLibraries;
shared_ptr<ScriptInterface::StructuredClone> m_MapData;
boost::rand48 m_MapGenRNG;
int m_Progress;
ScriptInterface* m_ScriptInterface;
VfsPath m_ScriptPath;
std::string m_Settings;
CTemplateLoader m_TemplateLoader;
// Thread
static void* RunThread(void* data);
bool Run();
pthread_t m_WorkerThread;
CMutex m_WorkerMutex;
};
#endif //INCLUDED_MAPGENERATOR
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