/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM 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 3 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.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#include "hpl1/engine/resources/ParticleManager.h"

#include "hpl1/engine/graphics/Graphics.h"
#include "hpl1/engine/graphics/ParticleSystem3D.h"
#include "hpl1/engine/resources/FileSearcher.h"
#include "hpl1/engine/resources/Resources.h"
#include "hpl1/engine/system/low_level_system.h"

namespace hpl {

//////////////////////////////////////////////////////////////////////////
// CONSTRUCTORS
//////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------

cParticleManager::cParticleManager(cGraphics *apGraphics, cResources *apResources)
	: iResourceManager(apResources->GetFileSearcher(), apResources->GetLowLevel(),
					   apResources->GetLowLevelSystem()) {
	mpGraphics = apGraphics;
	mpResources = apResources;
}

cParticleManager::~cParticleManager() {
	tResourceHandleMapIt it = m_mapHandleResources.begin();
	for (; it != m_mapHandleResources.end(); ++it) {
		iResourceBase *pResource = it->second;
		while (pResource->HasUsers())
			pResource->DecUserCount();
	}

	DestroyUnused(0);

	Log(" Done with particles\n");
}

//-----------------------------------------------------------------------

//////////////////////////////////////////////////////////////////////////
// PUBLIC METHODS
//////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------

iResourceBase *cParticleManager::Create(const tString &asName) {
	return NULL;
}

//-----------------------------------------------------------------------

iParticleSystem2D *cParticleManager::CreatePS2D(const tString &asName, cVector3f avSize) {
	/*tParticleSystemDataMapIt it = m_mapData.find(asName);
	if(it == m_mapData.end()) return NULL;

	iParticleSystemData *pData = it->second;

	//Is name needed?..nahh
	iParticleSystem* pPart = pData->Create("",avSize);
	pPart->SetDataName(asName);
	pPart->SetDataSize(avSize);

	if(pPart->GetType() == eParticleSystemType_2D)
		return static_cast<iParticleSystem2D*>(pPart);
	else
	{
		hplDelete(pPart);
		return NULL;
	}*/

	return NULL;
}

//-----------------------------------------------------------------------

cParticleSystem3D *cParticleManager::CreatePS3D(const tString &asName, const tString &asType,
												cVector3f avSize, const cMatrixf &a_mtxTransform) {
	cParticleSystemData3D *pData = NULL;

	tString sTypeName = cString::SetFileExt(cString::ToLowerCase(asType), "");

	// tParticleSystemData3DMapIt it = m_mapData3D.find(sTypeName);
	// if(it == m_mapData3D.end())
	pData = static_cast<cParticleSystemData3D *>(GetByName(sTypeName));
	if (pData == NULL) {
		tString sFile = cString::SetFileExt(asType, "ps");

		tString sPath = mpFileSearcher->GetFilePath(sFile);

		if (sPath == "") {
			Error("Couldn't find particle system file '%s'\n", sFile.c_str());
			return NULL;
		}

		cParticleSystemData3D *pPSData = hplNew(cParticleSystemData3D, (sTypeName,
																		mpResources, mpGraphics));

		if (pPSData->LoadFromFile(sPath) == false) {
			Error("Can't load data from particle system file '%s'\n", sTypeName.c_str());
			hplDelete(pPSData);
			return NULL;
		}

		AddData3D(pPSData);

		pData = pPSData;
	}

	pData->IncUserCount();
	cParticleSystem3D *pPS = pData->Create(asName, avSize, a_mtxTransform);
	pPS->SetDataName(asType);
	pPS->SetDataSize(avSize);
	pPS->SetParticleManager(this);

	return pPS;
}

//-----------------------------------------------------------------------

void cParticleManager::AddData3D(cParticleSystemData3D *apData) {
	AddResource(apData);
	// m.insert(tParticleSystemData3DMap::value_type(cString::ToLowerCase(apData->GetName()),
	//														apData));
}

//-----------------------------------------------------------------------

void cParticleManager::Preload(const tString &asFile) {
	tString sTypeName = cString::SetFileExt(cString::ToLowerCase(asFile), "");

	// tParticleSystemData3DMapIt it = m_mapData3D.find(sTypeName);
	// if(it == m_mapData3D.end())
	cParticleSystemData3D *pData = static_cast<cParticleSystemData3D *>(GetByName(sTypeName));
	if (pData == NULL) {
		tString sFile = cString::SetFileExt(asFile, "ps");
		tString sPath = mpFileSearcher->GetFilePath(sFile);
		if (sPath == "") {
			Error("Couldn't find particle system file '%s'\n", sFile.c_str());
			return;
		}

		cParticleSystemData3D *pPSData = hplNew(cParticleSystemData3D, (sTypeName,
																		mpResources, mpGraphics));

		if (pPSData->LoadFromFile(sPath) == false) {
			Error("Can't load data from particle system file '%s'\n", sTypeName.c_str());
			hplDelete(pPSData);
			return;
		}

		AddData3D(pPSData);
	}
}

//-----------------------------------------------------------------------

void cParticleManager::Unload(iResourceBase *apResource) {
}
//-----------------------------------------------------------------------

void cParticleManager::Destroy(iResourceBase *apResource) {
	if (apResource->HasUsers()) {
		apResource->DecUserCount();
	}
}

//-----------------------------------------------------------------------

//////////////////////////////////////////////////////////////////////////
// PRIVATE METHODS
//////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------

//-----------------------------------------------------------------------
} // namespace hpl