/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of Penumbra Overture.
 *
 * Penumbra Overture 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.
 *
 * Penumbra Overture 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 Penumbra Overture.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "HudModel_Throw.h"

#include "Init.h"
#include "Player.h"
#include "PlayerHelper.h"
#include "AttackHandler.h"
#include "GameEntity.h"
#include "GameEnemy.h"
#include "MapHandler.h"
#include "Inventory.h"


/////////////////////////////////////////////////////////////////////////
// HUD MODEL THROW
//////////////////////////////////////////////////////////////////////////

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

cHudModel_Throw::cHudModel_Throw() : iHudModel(ePlayerHandType_Throw)
{
	mbButtonDown = false;

	mfChargeCount = 0;
}

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

void cHudModel_Throw::LoadData(TiXmlElement *apRootElem)
{
	////////////////////////////////////////////////
	//Load the MAIN element.
	TiXmlElement *pMeleeElem = apRootElem->FirstChildElement("THROW");
	if(pMeleeElem==NULL){
		Error("Couldn't load THROW element from XML document\n");
		return;
	}
	
	//mbDrawDebug = cString::ToBool(pMeleeElem->Attribute("DrawDebug"),false);
	mChargePose = GetPoseFromElem("ChargePose",pMeleeElem);

	mfChargeTime = cString::ToFloat(pMeleeElem->Attribute("ChargeTime"),0);
	mfMinImpulse = cString::ToFloat(pMeleeElem->Attribute("MinImpulse"),0);
	mfMaxImpulse = cString::ToFloat(pMeleeElem->Attribute("MaxImpulse"),0);

	mfReloadTime = cString::ToFloat(pMeleeElem->Attribute("ReloadTime"),0);

	mvTorque = cString::ToVector3f(pMeleeElem->Attribute("Torque"),0);

	msThrowEntity = cString::ToString(pMeleeElem->Attribute("ThrowEntity"),"");

	msChargeSound = cString::ToString(pMeleeElem->Attribute("ChargeSound"),"");
	msThrowSound = cString::ToString(pMeleeElem->Attribute("ThrowSound"),"");
}

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

void cHudModel_Throw::OnStart()
{
	mbButtonDown = false;
	mfChargeCount = 0;
}

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

void cHudModel_Throw::ResetExtraData()
{
	mbButtonDown = false;
	mfChargeCount = 0;
}

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

bool cHudModel_Throw::UpdatePoseMatrix(cMatrixf& aPoseMtx, float afTimeStep)
{
	if(mbButtonDown)
	{
		mfChargeCount += afTimeStep / mfChargeTime; 
		if(mfChargeCount > 1) mfChargeCount = 1;
	}
	else
	{
		mfChargeCount -= afTimeStep*4;
		if(mfChargeCount < 0) mfChargeCount = 0;
	}
	
	cMatrixf mtxA = mEquipPose.ToMatrix();
	cMatrixf mtxB = mChargePose.ToMatrix();
	aPoseMtx = cMath::MatrixSlerp(mfChargeCount,mtxA,mtxB,true);

	return true;
}

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

void cHudModel_Throw::OnAttackDown()
{
	if(mState == eHudModelState_Idle)
	{
		mbButtonDown = true;
		
		if(msChargeSound != "")
		{
			cSoundHandler *pSoundHandler = mpInit->mpGame->GetSound()->GetSoundHandler();
			pSoundHandler->PlayGui(msChargeSound,false,1.0f);
		}
	}
}

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

void cHudModel_Throw::OnAttackUp()
{
	if(mbButtonDown == false) return;
	
	mbButtonDown = false;
	
	//Play sound
	if(msThrowSound != "")
	{
		cSoundHandler *pSoundHandler = mpInit->mpGame->GetSound()->GetSoundHandler();
		pSoundHandler->PlayGui(msThrowSound,false,1.0f);
	}

	///////////////////////////////
	//Create entity
	cCamera3D *pCam = mpInit->mpPlayer->GetCamera();
	
	cVector3f vRot = cVector3f(pCam->GetPitch(),pCam->GetYaw(), pCam->GetRoll());
	cMatrixf mtxStart = cMath::MatrixRotate(vRot, eEulerRotationOrder_XYZ);
	mtxStart.SetTranslation(pCam->GetPosition());
	
	iEntity3D *pEntity = mpInit->mpGame->GetScene()->GetWorld3D()->CreateEntity("Throw",mtxStart,
																				msThrowEntity, true);
	if(pEntity)
	{
		iGameEntity *pEntity = mpInit->mpMapHandler->GetLatestEntity();
		
		float fImpulse = mfMinImpulse * (1 - mfChargeCount) + mfMaxImpulse * mfChargeCount;
		
		cVector3f vRot =cMath::MatrixMul(mtxStart.GetRotation(),mvTorque);

        for(int i=0; i< pEntity->GetBodyNum(); ++i)
		{
			iPhysicsBody *pBody = pEntity->GetBody(i);
			pBody->AddImpulse(pCam->GetForward() * fImpulse);
			pBody->AddTorque(vRot);
		}
	}

	mpInit->mpPlayer->GetHidden()->UnHide();

	//////////////////////
	//Reset animations

	mfChargeCount = 0; 

	mfTime = -mfReloadTime;
	mState = eHudModelState_Equip;

	//////////////////////
	//Decrease item amount
	mpItem->AddCount(-1);
	if(mpItem->GetCount()<=0)
	{
		mfTime = 0.0f;
		mpInit->mpInventory->RemoveItem(mpItem);
		mpInit->mpPlayerHands->SetCurrentModel(1,"");
		mpInit->mpPlayer->ChangeState(ePlayerState_Normal);
	}

}

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

bool cHudModel_Throw::OnMouseMove(const cVector2f &avMovement)
{
	return false;
}

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