/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

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/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "hsTypes.h"

#include "SceneWatcher.h"

#include "../MaxMain/plMaxNode.h"
#include "../MaxComponent/plComponent.h"
#include "../MaxMain/plPlasmaRefMsgs.h"

#include "../pnKeyedObject/plKey.h"

SceneWatcher::SceneWatcher() : fDirty(false)
{
	RegisterNotification(INotify, this, NOTIFY_NODE_CREATED);
	IAddNodeRecur((plMaxNode*)GetCOREInterface()->GetRootNode());
}

SceneWatcher::~SceneWatcher()
{
	DeleteAllRefsFromMe();
	UnRegisterNotification(INotify, this, NOTIFY_NODE_CREATED);
}

int SceneWatcher::NumRefs()
{
	return fNodes.size();
}

RefTargetHandle SceneWatcher::GetReference(int i)
{
	if (i < fNodes.size())
		return fNodes[i];

	hsAssert(0, "Index out of range");
	return nil;
}

void SceneWatcher::SetReference(int i, RefTargetHandle rtarg)
{
	if (i < fNodes.size())
		fNodes[i] = (plMaxNode*)rtarg;
	else
		hsAssert(0, "Index out of range");
}

//
// Something in the scene has changed.
//
RefResult SceneWatcher::NotifyRefChanged(Interval changeInt, RefTargetHandle hTarget, 
						   PartID& partID, RefMessage message)
{
	plMaxNode *node = (plMaxNode *)hTarget;

#ifdef HS_DEBUGGING
	char *tmp = node->GetName();
#endif

	if (message == REFMSG_CHANGE)
	{
		// If the message is from a component, and was not generated locally (ie.
		// it came from a ref parameter), ignore it.  There is no way to tell if
		// one of these messages is an actual change to the component or just a
		// change to the referenced object.  We'll catch the real changes with
		// REFMSG_USER_COMP_REF_CHANGED below.
		if (node->IsComponent())
		{
			plComponentBase *comp = node->ConvertToComponent();
			if (!comp->IsCurMsgLocal())
				return REF_SUCCEED;
		}

		// If this is a static light, ignore it
		Object *obj = node->GetObjectRef();
		if (obj && obj->SuperClassID() == LIGHT_CLASS_ID && !node->GetRunTimeLight())
			return REF_SUCCEED;

		node->SetDirty(plMaxNode::kGeomDirty, true);
		ISetDirty();
	}
	else if (message == REFMSG_TARGET_DELETED)
	{
		// If the deleted node was a component, dirty everyone it was attached to
		if (node->IsComponent())
		{
			plComponentBase *comp = node->ConvertToComponent();
			for (UInt32 i = 0; i < comp->NumTargets(); i++)
			{
				if (comp->GetTarget(i))
					comp->GetTarget(i)->SetDirty(plMaxNode::kGeomDirty, true);
			}
		}

		fDeleted.push_back(node->GetKey());

		IRemoveRef(node);
		ISetDirty();
	}
	else if (message == REFMSG_NODE_MATERIAL_CHANGED ||
			message == REFMSG_USER_MAT)
	{
		if (!node->IsComponent())
		{
			node->SetDirty(plMaxNode::kMatDirty, true);
			ISetDirty();
		}
	}
	// A node was added to the components target list
	else if (message == REFMSG_USER_TARGET_ADD)
	{
		plMaxNode *target = (plMaxNode*)partID;
		target->SetDirty(plMaxNode::kGeomDirty, true);
		ISetDirty();
	}
	// A node was deleted from the components target list
	else if (message == REFMSG_USER_TARGET_DELETE)
	{
		plMaxNode *target = (plMaxNode*)partID;
		target->SetDirty(plMaxNode::kGeomDirty, true);
		ISetDirty();
	}
	// A ref maintained by a component PB changed (not just a propagated message
	// from the ref)
	else if (message == REFMSG_USER_COMP_REF_CHANGED)
	{
		node->SetDirty(plMaxNode::kGeomDirty, true);
		ISetDirty();
	}

	return REF_SUCCEED;
}

bool SceneWatcher::AnyDeleted()
{
	return !fDeleted.empty();
}

SceneWatcher::KeyList& SceneWatcher::GetDeleted()
{
	return fDeleted;
}

const SceneWatcher::NodeList& SceneWatcher::GetWatchNodes()
{
	return fNodes;
}

bool SceneWatcher::AnyDirty()
{
	return fDirty;
}

void SceneWatcher::GetDirty(NodeSet& dirtyNodes)
{
	int size = fNodes.size();
	for (int i = 0; i < size; i++)
	{
		plMaxNode *node = fNodes[i];

#ifdef HS_DEBUGGING
		const char *tmp = node ? node->GetName() : nil;
#endif
		// If any dirty flags are set, add to dirty list
		if (node && node->GetDirty(plMaxNode::kAllDirty))
			IGetDependents(node, dirtyNodes);
	}

	fDirty = false;
}

void SceneWatcher::IAddRef(plMaxNode *node)
{
	// Ensure that we don't already ref this node
	if (FindRef(node) != -1)
		return;

	// Make a ref
	int size = fNodes.size();
	fNodes.resize(size+1);
	MakeRefByID(FOREVER, size, node);
}

void SceneWatcher::IRemoveRef(plMaxNode *node)
{
	// Delete the reference if it's in our list
	int i = FindRef(node);

	if (i != -1)
	{
		// Clear the node data, in case it is undeleted later
		// (when it will be invalid)
		node->ClearData(nil, nil);
		node->SetDirty(plMaxNode::kAllDirty, true);

		// We can never really delete this reference because the user may "undo"
		// and cause it to come back, which just sets the reference again.
		fNodes[i] = nil;
	}
}

void SceneWatcher::IAddNodeRecur(plMaxNode *node)
{
	IAddRef(node);

	// If a node is dirty, make sure to set the dirty flag (since nodes may have
	// been dirtied in a previous run but not reconverted yet).
	if (node->GetDirty(plMaxNode::kAllDirty))
		fDirty = true;

	for (int i = 0; i < node->NumberOfChildren(); ++i)
	{
		plMaxNode *childNode = (plMaxNode*)node->GetChildNode(i);
		IAddNodeRecur(childNode);
	}
}

void SceneWatcher::INotify(void *param, NotifyInfo *info)
{
	SceneWatcher *inst = (SceneWatcher*)param;

	int code = info->intcode;

	// New node was added to the scene, add it to our refs
	if (code == NOTIFY_NODE_CREATED)
	{
		plMaxNode *node = (plMaxNode*)info->callParam;

		// Add a ref to the node and set it to dirty
		inst->IAddRef(node);
		node->SetDirty(plMaxNodeBase::kAllDirty, true);
		inst->ISetDirty();
	}
}

void SceneWatcher::ISetDirty()
{
	fDirty = true;
}

#include "../MaxComponent/plMiscComponents.h"

#include "../MaxExport/plExportErrorMsg.h"
#include "../MaxExport/plExportProgressBar.h"
#include "../MaxComponent/plResponderComponent.h"	// Just need the CID

void SceneWatcher::IGetLogicDependents(plMaxNode *node, NodeSet& nodes)
{
	int attached = node->NumAttachedComponents();
	for (int i = 0; i < attached; i++)
	{
		plComponentBase *comp = node->GetAttachedComponent(i);
/*
		if (comp->ClassID() == ACTIVATOR_CID)
		{
			plMaxNodeBase *activatorNode = comp->GetINode();
			int numResponders = activatorNode->NumAttachedComponents(true);
			for (int i = 0; i < numResponders; i++)
			{
				plComponentBase *responderComp = activatorNode->GetAttachedComponent(i, true);
				if (responderComp->ClassID() == RESPONDER_CID)
				{
					for (int j = 0; j < responderComp->NumTargets(); j++)
					{
						plMaxNode *targ = (plMaxNode*)responderComp->GetTarget(j);
						if (targ && nodes.find(targ) == nodes.end())
						{
							nodes.insert(targ);
							IGetLogicDependents(targ, nodes);
						}
					}
				}
			}
		}
		else
*/
		if (comp->ClassID() == RESPONDER_CID)
		{
			int activatorCnt = ResponderGetActivatorCount(comp);
			for (int i = 0; i < activatorCnt; i++)
			{
				plComponentBase *activator = ResponderGetActivator(comp, i);

				for (int j = 0; j < activator->NumTargets(); j++)
				{
					plMaxNode *targ = (plMaxNode*)activator->GetTarget(j);
					if (targ && nodes.find(targ) == nodes.end())
					{
						nodes.insert(targ);
						IGetLogicDependents(targ, nodes);
					}
				}
			}
		}
	}
}

void SceneWatcher::IGetDependents(plMaxNode *node, NodeSet& nodes)
{
	NodeSet dependents;

	if (node->IsComponent())
	{
		plComponentBase *comp = node->ConvertToComponent();

		if (comp->ClassID() == ROOM_CID || comp->ClassID() == PAGEINFO_CID)
			return;

		for (int i = 0; i < comp->NumTargets(); i++)
		{
			plMaxNode *targ = (plMaxNode*)comp->GetTarget(i);
			if (targ)
			{
				dependents.insert(targ);
				IGetLogicDependents(targ, dependents);
			}
		}
	}
	else
	{
		dependents.insert(node);

		IGetLogicDependents(node, dependents);
	}

//	Bug in VC++?
//	nodes.insert(dependents.begin(), dependents.end());
	for (NodeSet::iterator i = dependents.begin(); i != dependents.end(); i++)
		nodes.insert(*i);
}