/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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 2
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 * Scenegraph controller for ipos.
 */

/** \file gameengine/Ketsji/KX_IPO_SGController.cpp
 *  \ingroup ketsji
 */


#if defined(_WIN64)
typedef unsigned __int64 uint_ptr;
#else
typedef unsigned long uint_ptr;
#endif

#ifdef _MSC_VER
   /* This warning tells us about truncation of __long__ stl-generated names.
    * It can occasionally cause DevStudio to have internal compiler warnings. */
#  pragma warning(disable:4786)
#endif

#include "KX_IPO_SGController.h"
#include "KX_ScalarInterpolator.h"
#include "KX_GameObject.h"
#include "PHY_IPhysicsController.h"
#include "DNA_ipo_types.h"
#include "BLI_math.h"

// All objects should start on frame 1! Will we ever need an object to 
// start on another frame, the 1.0 should change.
KX_IpoSGController::KX_IpoSGController()
: m_ipo_as_force(false),
  m_ipo_add(false),
  m_ipo_local(false),
  m_modified(true),
  m_ipotime(1.0),
  m_ipo_start_initialized(false),
  m_ipo_start_euler(0.0f, 0.0f, 0.0f),
  m_ipo_euler_initialized(false)
{
	m_game_object = NULL;
	for (int i = 0; i < KX_MAX_IPO_CHANNELS; i++)
		m_ipo_channels_active[i] = false;
}


void KX_IpoSGController::SetOption(int option, int value)
{
	switch (option) {
	case SG_CONTR_IPO_IPO_AS_FORCE:
		m_ipo_as_force = (value != 0);
		m_modified = true;
		break;
	case SG_CONTR_IPO_IPO_ADD:
		m_ipo_add = (value != 0);
		m_modified = true;
		break;
	case SG_CONTR_IPO_RESET:
		if (m_ipo_start_initialized && value) {
			m_ipo_start_initialized = false;
			m_modified = true;
		}
		break;
	case SG_CONTR_IPO_LOCAL:
		if (value/* && ((SG_Node*)m_pObject)->GetSGParent() == NULL*/) {
			// only accept local Ipo if the object has no parent
			m_ipo_local = true;
		}
		else {
			m_ipo_local = false;
		}
		m_modified = true;
		break;
	default:
		; /* just ignore the rest */
	}
}

void KX_IpoSGController::UpdateSumoReference()
{
	if (m_game_object) {
	}
}

void KX_IpoSGController::SetGameObject(KX_GameObject *go)
{
	m_game_object = go;
}

bool KX_IpoSGController::Update(double currentTime)
{
	if (m_modified) {
		T_InterpolatorList::iterator i;
		for (i = m_interpolators.begin(); i != m_interpolators.end(); ++i) {
			(*i)->Execute(m_ipotime);//currentTime);
		}

		SG_Spatial *ob = (SG_Spatial *)m_pObject;

		//initialization on the first frame of the IPO
		if (!m_ipo_start_initialized) {
			m_ipo_start_point = ob->GetLocalPosition();
			m_ipo_start_orient = ob->GetLocalOrientation();
			m_ipo_start_scale = ob->GetLocalScale();
			m_ipo_start_initialized = true;
			if (!m_ipo_euler_initialized) {
				// do it only once to avoid angle discontinuities
				m_ipo_start_orient.getEuler(m_ipo_start_euler[0], m_ipo_start_euler[1], m_ipo_start_euler[2]);
				m_ipo_euler_initialized = true;
			}
		}

		//modifies position?
		if (m_ipo_channels_active[OB_LOC_X]  || m_ipo_channels_active[OB_LOC_Y]  || m_ipo_channels_active[OB_LOC_Z] ||
		    m_ipo_channels_active[OB_DLOC_X] || m_ipo_channels_active[OB_DLOC_Y] || m_ipo_channels_active[OB_DLOC_Z])
		{
			if (m_ipo_as_force == true) {
				if (m_game_object && ob && m_game_object->GetPhysicsController()) {
					MT_Vector3 vec = m_ipo_local ?
					                     ob->GetWorldOrientation() * m_ipo_xform.GetPosition() :
										 m_ipo_xform.GetPosition();
					m_game_object->GetPhysicsController()->ApplyForce(vec, false);
				}
			} 
			else {
				// Local ipo should be defined with the object position at (0,0,0)
				// Local transform is applied to the object based on initial position
				MT_Point3 newPosition(0.0f, 0.0f, 0.0f);

				if (!m_ipo_add)
					newPosition = ob->GetLocalPosition();
				//apply separate IPO channels if there is any data in them
				//Loc and dLoc act by themselves or are additive
				//LocX and dLocX
				if (m_ipo_channels_active[OB_LOC_X]) {
					newPosition[0] = (m_ipo_channels_active[OB_DLOC_X] ? m_ipo_xform.GetPosition()[0] + m_ipo_xform.GetDeltaPosition()[0] : m_ipo_xform.GetPosition()[0]);
				}
				else if (m_ipo_channels_active[OB_DLOC_X] && m_ipo_start_initialized) {
					newPosition[0] = (((!m_ipo_add) ? m_ipo_start_point[0] : 0.0f) + m_ipo_xform.GetDeltaPosition()[0]);
				}
				//LocY and dLocY
				if (m_ipo_channels_active[OB_LOC_Y]) {
					newPosition[1] = (m_ipo_channels_active[OB_DLOC_Y] ? m_ipo_xform.GetPosition()[1] + m_ipo_xform.GetDeltaPosition()[1] : m_ipo_xform.GetPosition()[1]);
				}
				else if (m_ipo_channels_active[OB_DLOC_Y] && m_ipo_start_initialized) {
					newPosition[1] = (((!m_ipo_add) ? m_ipo_start_point[1] : 0.0f) + m_ipo_xform.GetDeltaPosition()[1]);
				}
				//LocZ and dLocZ
				if (m_ipo_channels_active[OB_LOC_Z]) {
					newPosition[2] = (m_ipo_channels_active[OB_DLOC_Z] ? m_ipo_xform.GetPosition()[2] + m_ipo_xform.GetDeltaPosition()[2] : m_ipo_xform.GetPosition()[2]);
				}
				else if (m_ipo_channels_active[OB_DLOC_Z] && m_ipo_start_initialized) {
					newPosition[2] = (((!m_ipo_add) ? m_ipo_start_point[2] : 0.0f) + m_ipo_xform.GetDeltaPosition()[2]);
				}
				if (m_ipo_add) {
					if (m_ipo_local)
						newPosition = m_ipo_start_point + m_ipo_start_scale*(m_ipo_start_orient*newPosition);
					else
						newPosition = m_ipo_start_point + newPosition;
				}
				if (m_game_object)
					m_game_object->NodeSetLocalPosition(newPosition);
			}
		}
		//modifies orientation?
		if (m_ipo_channels_active[OB_ROT_X]  || m_ipo_channels_active[OB_ROT_Y]  || m_ipo_channels_active[OB_ROT_Z] ||
		    m_ipo_channels_active[OB_DROT_X] || m_ipo_channels_active[OB_DROT_Y] || m_ipo_channels_active[OB_DROT_Z])
		{
			if (m_ipo_as_force) {
				if (m_game_object && ob) {
					m_game_object->ApplyTorque(m_ipo_local ?
						ob->GetWorldOrientation() * m_ipo_xform.GetEulerAngles() :
						m_ipo_xform.GetEulerAngles(), false);
				}
			}
			else if (m_ipo_add) {
				if (m_ipo_start_initialized) {
					double yaw = 0.0, pitch = 0.0, roll = 0.0; //delta Euler angles

					//RotX and dRotX
					if (m_ipo_channels_active[OB_ROT_X])
						yaw += m_ipo_xform.GetEulerAngles()[0];
					if (m_ipo_channels_active[OB_DROT_X])
						yaw += m_ipo_xform.GetDeltaEulerAngles()[0];

					//RotY dRotY
					if (m_ipo_channels_active[OB_ROT_Y])
						pitch += m_ipo_xform.GetEulerAngles()[1];
					if (m_ipo_channels_active[OB_DROT_Y])
						pitch += m_ipo_xform.GetDeltaEulerAngles()[1];

					//RotZ and dRotZ
					if (m_ipo_channels_active[OB_ROT_Z])
						roll += m_ipo_xform.GetEulerAngles()[2];
					if (m_ipo_channels_active[OB_DROT_Z])
						roll += m_ipo_xform.GetDeltaEulerAngles()[2];

					MT_Matrix3x3 rotation(MT_Vector3(yaw, pitch, roll));
					if (m_ipo_local)
						rotation = m_ipo_start_orient * rotation;
					else
						rotation = rotation * m_ipo_start_orient;
					if (m_game_object)
						m_game_object->NodeSetLocalOrientation(rotation);
				}
			}
			else if (m_ipo_channels_active[OB_ROT_X] || m_ipo_channels_active[OB_ROT_Y] || m_ipo_channels_active[OB_ROT_Z]) {
				if (m_ipo_euler_initialized) {
					// assume all channel absolute
					// All 3 channels should be specified but if they are not, we will take 
					// the value at the start of the game to avoid angle sign reversal 
					double yaw = m_ipo_start_euler[0], pitch = m_ipo_start_euler[1], roll = m_ipo_start_euler[2];

					//RotX and dRotX
					if (m_ipo_channels_active[OB_ROT_X]) {
						yaw = (m_ipo_channels_active[OB_DROT_X] ? (m_ipo_xform.GetEulerAngles()[0] + m_ipo_xform.GetDeltaEulerAngles()[0]) : m_ipo_xform.GetEulerAngles()[0] );
					}
					else if (m_ipo_channels_active[OB_DROT_X]) {
						yaw += m_ipo_xform.GetDeltaEulerAngles()[0];
					}

					//RotY dRotY
					if (m_ipo_channels_active[OB_ROT_Y]) {
						pitch = (m_ipo_channels_active[OB_DROT_Y] ? (m_ipo_xform.GetEulerAngles()[1] + m_ipo_xform.GetDeltaEulerAngles()[1]) : m_ipo_xform.GetEulerAngles()[1] );
					}
					else if (m_ipo_channels_active[OB_DROT_Y]) {
						pitch += m_ipo_xform.GetDeltaEulerAngles()[1];
					}
					
					//RotZ and dRotZ
					if (m_ipo_channels_active[OB_ROT_Z]) {
						roll = (m_ipo_channels_active[OB_DROT_Z] ? (m_ipo_xform.GetEulerAngles()[2] + m_ipo_xform.GetDeltaEulerAngles()[2]) : m_ipo_xform.GetEulerAngles()[2] );
					}
					else if (m_ipo_channels_active[OB_DROT_Z]) {
						roll += m_ipo_xform.GetDeltaEulerAngles()[2];
					}
					if (m_game_object)
						m_game_object->NodeSetLocalOrientation(MT_Vector3(yaw, pitch, roll));
				}
			}
			else if (m_ipo_start_initialized) {
				// only DROT, treat as Add
				double yaw = 0.0, pitch = 0.0, roll = 0.0; //delta Euler angles

				//dRotX
				if (m_ipo_channels_active[OB_DROT_X])
					yaw = m_ipo_xform.GetDeltaEulerAngles()[0];

				//dRotY
				if (m_ipo_channels_active[OB_DROT_Y])
					pitch = m_ipo_xform.GetDeltaEulerAngles()[1];

				//dRotZ
				if (m_ipo_channels_active[OB_DROT_Z])
					roll = m_ipo_xform.GetDeltaEulerAngles()[2];

				// dRot are always local
				MT_Matrix3x3 rotation(MT_Vector3(yaw, pitch, roll));
				rotation = m_ipo_start_orient * rotation;
				if (m_game_object)
					m_game_object->NodeSetLocalOrientation(rotation);
			}
		}
		//modifies scale?
		if (m_ipo_channels_active[OB_SIZE_X] || m_ipo_channels_active[OB_SIZE_Y] || m_ipo_channels_active[OB_SIZE_Z] ||
		    m_ipo_channels_active[OB_DSIZE_X] || m_ipo_channels_active[OB_DSIZE_Y] || m_ipo_channels_active[OB_DSIZE_Z])
		{
			//default is no scale change
			MT_Vector3 newScale(1.0f, 1.0f, 1.0f);
			if (!m_ipo_add)
				newScale = ob->GetLocalScale();

			if (m_ipo_channels_active[OB_SIZE_X]) {
				newScale[0] = (m_ipo_channels_active[OB_DSIZE_X] ? (m_ipo_xform.GetScaling()[0] + m_ipo_xform.GetDeltaScaling()[0]) : m_ipo_xform.GetScaling()[0]);
			}
			else if (m_ipo_channels_active[OB_DSIZE_X] && m_ipo_start_initialized) {
				newScale[0] = (m_ipo_xform.GetDeltaScaling()[0] + ((!m_ipo_add) ? m_ipo_start_scale[0] : 0.0f));
			}

			//RotY dRotY
			if (m_ipo_channels_active[OB_SIZE_Y]) {
				newScale[1] = (m_ipo_channels_active[OB_DSIZE_Y] ? (m_ipo_xform.GetScaling()[1] + m_ipo_xform.GetDeltaScaling()[1]): m_ipo_xform.GetScaling()[1]);
			}
			else if (m_ipo_channels_active[OB_DSIZE_Y] && m_ipo_start_initialized) {
				newScale[1] = (m_ipo_xform.GetDeltaScaling()[1] + ((!m_ipo_add)?m_ipo_start_scale[1] : 0.0f));
			}
			
			//RotZ and dRotZ
			if (m_ipo_channels_active[OB_SIZE_Z]) {
				newScale[2] = (m_ipo_channels_active[OB_DSIZE_Z] ? (m_ipo_xform.GetScaling()[2] + m_ipo_xform.GetDeltaScaling()[2]) : m_ipo_xform.GetScaling()[2]);
			}
			else if (m_ipo_channels_active[OB_DSIZE_Z] && m_ipo_start_initialized) {
				newScale[2] = (m_ipo_xform.GetDeltaScaling()[2] + ((!m_ipo_add)?m_ipo_start_scale[2] : 1.0f));
			}

			if (m_ipo_add) {
				newScale = m_ipo_start_scale * newScale;
			}
			if (m_game_object)
				m_game_object->NodeSetLocalScale(newScale);
		}
		m_modified = false;
	}
	return false;
}

void KX_IpoSGController::AddInterpolator(KX_IInterpolator *interp)
{
	m_interpolators.push_back(interp);
}

SG_Controller *KX_IpoSGController::GetReplica(SG_Node *destnode)
{
	KX_IpoSGController *iporeplica = new KX_IpoSGController(*this);
	// clear object that ipo acts on in the replica.
	iporeplica->ClearObject();
	iporeplica->SetGameObject((KX_GameObject *)destnode->GetSGClientObject());

	// dirty hack, ask Gino for a better solution in the ipo implementation
	// hacken en zagen, in what we call datahiding, not written for replication :(

	T_InterpolatorList oldlist = m_interpolators;
	iporeplica->m_interpolators.clear();

	T_InterpolatorList::iterator i;
	for (i = oldlist.begin(); i != oldlist.end(); ++i) {
		KX_ScalarInterpolator *copyipo = new KX_ScalarInterpolator(*((KX_ScalarInterpolator *)*i));
		iporeplica->AddInterpolator(copyipo);

		MT_Scalar *scaal = ((KX_ScalarInterpolator *)*i)->GetTarget();
		uint_ptr orgbase = (uint_ptr)&m_ipo_xform;
		uint_ptr orgloc = (uint_ptr)scaal;
		uint_ptr offset = orgloc - orgbase;
		uint_ptr newaddrbase = (uint_ptr)&iporeplica->m_ipo_xform;
		newaddrbase += offset;
		MT_Scalar *blaptr = (MT_Scalar *) newaddrbase;
		copyipo->SetNewTarget((MT_Scalar *)blaptr);
	}

	return iporeplica;
}

KX_IpoSGController::~KX_IpoSGController()
{
	T_InterpolatorList::iterator i;
	for (i = m_interpolators.begin(); i != m_interpolators.end(); ++i) {
		delete (*i);
	}
}