#include <BBCEntityCluster.h>
#include <BBCEntity.h>

namespace BBC {

EntityCluster::EntityCluster(): references(0) // initialize references to 0  
{
}

EntityCluster::~EntityCluster() 
{	
	mEntityClusterDataList.clear();
}

EntityClusterDataPtr EntityCluster::getEntityClusterData(unsigned int value)
{
	return mEntityClusterDataList[value];
}

void EntityCluster::removeEntityClusterData(unsigned int value)
{
	mEntityClusterDataList.erase(mEntityClusterDataList.begin() + value);
}


unsigned int EntityCluster::getNumEntitiesClusterData()
{
	return static_cast<unsigned int>(mEntityClusterDataList.size());
}

void EntityCluster::addEntityClusterData(EntityClusterDataPtr value)
{
	mEntityClusterDataList.push_back(value);
}

void EntityCluster::removeEntitClusterData(unsigned int value)
{
	mEntityClusterDataList.erase(mEntityClusterDataList.begin()+value);
}

EntityPtr EntityCluster::getEntity() 
{
	return mEntity;
}

void EntityCluster::setEntity(EntityPtr value) {
	mEntity = value;
}

unsigned int EntityCluster::getBillboardHandle() {
	return mBillboardHandle;
}

void EntityCluster::setBillboardHandle(unsigned int value) {
	mBillboardHandle = value;
}

void EntityCluster::setEntityDistribution(EntityDistributionPtr value)
{
	mEntityDistribution = value;
}

EntityDistributionPtr EntityCluster::getEntityDistribution()
{
	return mEntityDistribution;
}

void EntityCluster::generateEntityCluster() 
{
	mEntity = BBC::EntityPtr(new BBC::Entity());

	mEntity->getSubEntity(0)->addTextureCoordSet(2);
	Ogre::Vector3 indicesOffset = Ogre::Vector3::ZERO;

	mEntity->getSubEntity(0)->enableVertexColors(true);

	float fRed = Ogre::Math::RangeRandom(0.0,1.0);
	float fGreen = Ogre::Math::RangeRandom(0.0,1.0);
	float fBlue = Ogre::Math::RangeRandom(0.0,1.0);
	Ogre::ColourValue subEntityColour = Ogre::ColourValue(1.0,fRed,fGreen,fBlue);

	unsigned int offset = 0;
	for (unsigned int iEntityClusterData = 0; iEntityClusterData < getNumEntitiesClusterData(); iEntityClusterData++)
	{			
		EntityPtr entity = getEntityClusterData(iEntityClusterData)->getEntity();

		for (unsigned int iFace = 0; iFace < entity->getSubEntity(0)->getNumFaces(); iFace++)
		{
			UniqueVertex uniqueVertex01, uniqueVertex02, uniqueVertex03;
			Ogre::Vector3 indices = entity->getSubEntity(0)->getFaceVerticesIDs(iFace);
			mEntity->getSubEntity(0)->addFaceVerticesIDs(indices + indicesOffset);
			
			mEntity->getSubEntity(0)->enableVertexColors(entity->getSubEntity(0)->hasVertexColors());
			
			uniqueVertex01.position = entity->getSubEntity(0)->getUniqueVertex(indices[0]).position;
			uniqueVertex01.normal = entity->getSubEntity(0)->getUniqueVertex(indices[0]).normal;
			uniqueVertex01.uv[0] = entity->getSubEntity(0)->getUniqueVertex(indices[0]).uv[0];
			if (mEntity->getSubEntity(0)->hasVertexColors())
			{			
                uniqueVertex01.colour = subEntityColour.getAsRGBA();
			}
			mEntity->getSubEntity(0)->addUniqueVertex(uniqueVertex01);

			uniqueVertex02.position = entity->getSubEntity(0)->getUniqueVertex(indices[1]).position;
			uniqueVertex02.normal = entity->getSubEntity(0)->getUniqueVertex(indices[1]).normal;
			uniqueVertex02.uv[0] = entity->getSubEntity(0)->getUniqueVertex(indices[1]).uv[0];
			if (mEntity->getSubEntity(0)->hasVertexColors())
			{			
                uniqueVertex02.colour = subEntityColour.getAsRGBA();
			}
			mEntity->getSubEntity(0)->addUniqueVertex(uniqueVertex02);

			uniqueVertex03.position = entity->getSubEntity(0)->getUniqueVertex(indices[2]).position;
			uniqueVertex03.normal = entity->getSubEntity(0)->getUniqueVertex(indices[2]).normal;
			uniqueVertex03.uv[0] = entity->getSubEntity(0)->getUniqueVertex(indices[2]).uv[0];
			if (mEntity->getSubEntity(0)->hasVertexColors())
			{			
                uniqueVertex03.colour = subEntityColour.getAsRGBA();
			}
			mEntity->getSubEntity(0)->addUniqueVertex(uniqueVertex03);	


		}
		offset = offset + entity->getSubEntity(0)->getNumFaces() * 3;
		indicesOffset = Ogre::Vector3(offset, offset, offset);
	}
}

}