/* 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/graphics/Skeleton.h"

#include "hpl1/engine/graphics/Bone.h"
#include "hpl1/engine/system/MemoryManager.h"
#include "hpl1/engine/system/low_level_system.h"

namespace hpl {

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

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

cSkeleton::cSkeleton() {
	mpRootBone = hplNew(cBone, ("__root_bone", this));
	mpRootBone->SetTransform(cMatrixf::Identity);
}

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

cSkeleton::~cSkeleton() {
	// All bones are deleted in this call.
	// No need to delete the bones in the containers.
	hplDelete(mpRootBone);
}

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

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

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

void cSkeleton::AddBone(cBone *apBone) {
	mvBones.push_back(apBone);

	m_mapBonesIdxByName.insert(tBoneIdxNameMap::value_type(apBone->GetName(), (int)mvBones.size() - 1));
}

void cSkeleton::RemoveBone(cBone *apBone) {
	tBoneVecIt vecIt = mvBones.begin();
	for (; vecIt != mvBones.end(); ++vecIt) {
		if (*vecIt == apBone) {
			mvBones.erase(vecIt);
			break;
		}
	}

	// Rebuild the map
	m_mapBonesIdxByName.clear();

	for (int i = 0; i < (int)mvBones.size(); i++) {
		m_mapBonesIdxByName.insert(tBoneIdxNameMap::value_type(
			mvBones[i]->GetName(), i));
	}
}

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

cBone *cSkeleton::GetRootBone() {
	return mpRootBone;
}

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

cBone *cSkeleton::GetBoneByIndex(int alIndex) {
	return mvBones[alIndex];
}

cBone *cSkeleton::GetBoneByName(const tString &asName) {
	int alIdx = GetBoneIndexByName(asName);
	if (alIdx < 0)
		return NULL;

	return mvBones[alIdx];
}

int cSkeleton::GetBoneIndexByName(const tString &asName) {
	tBoneIdxNameMapIt it = m_mapBonesIdxByName.find(asName);
	if (it == m_mapBonesIdxByName.end())
		return -1;

	return it->second;
}
int cSkeleton::GetBoneNum() {
	return (int)mvBones.size();
}

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

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

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

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