/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU

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****************************************************************************/
#include "stdneb.h"
#include "particleTextureAnimatorAffector.h"
#include "particles/particlesystem.h"
#include "particles/particleaffector.h"
#include "particles/particle.h"

namespace Particles
{
	using namespace Math;

	__ImplementClass(Particles::TextureAnimatorAffector, CPFCC::AFFECTOR_TEXTUREANIMATOR, Particles::ParticleAffector);

	const Math::scalar TextureAnimatorAffector::DEFAULT_TA_TIME_STEP = 0.0f;
	const ushort TextureAnimatorAffector::DEFAULT_TA_TEXCOORDS_START = 0;
	const ushort TextureAnimatorAffector::DEFAULT_TA_TEXCOORDS_END = 0;
	const TextureAnimatorAffector::TextureAnimationType TextureAnimatorAffector::DEFAULT_TA_ANIMATION_TYPE = TextureAnimatorAffector::TAT_WHOLE_SHEET;
	const bool TextureAnimatorAffector::DEFAULT_TA_START_RANDOM = true;
	//-----------------------------------------------------------------------
	TextureAnimatorAffector::TextureAnimatorAffector(void) : ParticleAffector(),
		mAnimationTimeStepCount(DEFAULT_TA_TIME_STEP),
		mAnimationTimeStep(DEFAULT_TA_TIME_STEP),
		mTextureAnimationType(DEFAULT_TA_ANIMATION_TYPE),
		mIsSingleRowRandom(DEFAULT_TA_START_RANDOM),
		mRowIndex(0),
		mCycles(1),
		mTileX(1),
		mTileY(1),
		mTexStart(0),
		mTexEnd(1)
	{
		mName = "TextureAnimatorAffector";
		mMinMaxTexAnimation.SetCurveState(Math::MinMaxCurve::Curve);
	}
	//--------------------------------------------------------------------------------
	void TextureAnimatorAffector::_onActivate(void)
	{
		Super::_onActivate();
		if (mParentSystem)
		{
			ParticleTarget* target = mParentSystem->GetTarget().get();
			if (target)
			{
				if(mEnable)
					target->SetTexCoordSize(mTileX, mTileY);
			}
		}
	}
	//--------------------------------------------------------------------------------
	void TextureAnimatorAffector::SetTileX(ushort nCount)
	{
		mTileX = nCount;

		if(mTileX == 0)
			mTileX = 1;
		if (mParentSystem)
		{
			ParticleTarget* target = mParentSystem->GetTarget().get();
			if (target)
			{
				target->SetTexCoordRowSize(mTileX);
			}
		}
	}
	//--------------------------------------------------------------------------------
	void TextureAnimatorAffector::SetTextureAnimationType(TextureAnimatorAffector::TextureAnimationType textureAnimationType)
	{
		mTextureAnimationType = textureAnimationType;
		if (mTextureAnimationType == TAT_WHOLE_SHEET )
		{
			int total = mTileX * mTileY;
		}
	}
	//--------------------------------------------------------------------------------
	void TextureAnimatorAffector::SetTileY(ushort nCount)
	{
		mTileY = nCount;
		if(mTileY == 0)
			mTileY = 1;
		if (mRowIndex > mTileY)
			mRowIndex = mTileY;

		if (mParentSystem)
		{
			ParticleTarget* target = mParentSystem->GetTarget().get();
			if (target)
			{
				target->SetTexcoordColumnSize(mTileY);
			}
		}
	}

	//-----------------------------------------------------------------------
	void TextureAnimatorAffector::_initParticleForEmission(Particle* particle)
	{		

	}
	//-----------------------------------------------------------------------
	void TextureAnimatorAffector::_affect(Particle* particle)
	{
		if(!GetEnable())
			return;
		if(!mEnable)
			return;

		float percent = (particle->mTotalTimeToLive - particle->mTimeToLive)/particle->mTotalTimeToLive;

		float time = mCycles * percent;
		float texCoordIndex = 0;
		float texCoordMaxIndex = 0;

		time = time - int(time);
		texCoordIndex = mMinMaxTexAnimation.Calculate(time,particle->mRandom0);

		int iTexCoordIndex = (int)texCoordIndex;

		if (mTextureAnimationType == TAT_WHOLE_SHEET)
		{
			iTexCoordIndex = iTexCoordIndex % (mTileX * mTileY);
		}
		else
		{
			int startRowIndex = mRowIndex ;

			if (mIsSingleRowRandom)
			{
				startRowIndex = (int)(particle->mRandom1 * mTileY) ;
			}

			startRowIndex = startRowIndex % ((int)mTileY );
			iTexCoordIndex = iTexCoordIndex % ((int)mTileX);
			iTexCoordIndex = startRowIndex * mTileX + iTexCoordIndex;
		}

		particle->mTexCoordIndex = iTexCoordIndex;

	}
	//-----------------------------------------------------------------------
	void TextureAnimatorAffector::SetShaderParam()
	{
		Graphic::GlobalMaterialParam* pGMP = Graphic::Material::GetGlobalMaterialParams();
		pGMP->SetVectorParam(Graphic::eGShaderParticleTexAnim,mShaderParam);
	}
	void TextureAnimatorAffector::InitShaderParam()
	{
		mShaderParam.set(mTileX,mTileY,mTexStart,(float)(mTexEnd+1) );
	}
	//--------------------------------------------------------------------------------
	void TextureAnimatorAffector::SetShaderMask(const GPtr<ShaderProgramCompiler::ShaderMarcro>& pMarcro)
	{
		if(!GetEnable())
			return;
		pMarcro->TurnOn(ShaderProgramCompiler::ShaderMarcro::m_sParticleTexAnim);
	}
	//--------------------------------------------------------------------------------
	void TextureAnimatorAffector::_switchParticleType(bool _isMobile)
	{
		if(!_isMobile)
		{
			Util::Array<Math::float2> _list;
			Util::Array<bool> _type;
			_type.Append(true);
			_type.Append(true);
			_list.Append(Math::float2(0,mTexStart));
			_list.Append(Math::float2(1,(float)(mTexEnd+1) ) );
			mMinMaxTexAnimation.SetCurveFromArray(_list,_type,_list,_type);
			return;
		}
		mTexStart = (ushort)mMinMaxTexAnimation.Calculate(0);
		mTexEnd = (ushort)mMinMaxTexAnimation.Calculate(1);
	}
}