/*==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.

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 or by snail mail at:
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*==LICENSE==*/
#include "plAGMasterSDLModifier.h"
#include "../plSDL/plSDL.h"
#include "../plInterp/plAnimTimeConvert.h"
#include "../pnSceneObject/plSceneObject.h"
#include "plAGMasterMod.h"
#include "plAGAnimInstance.h"
#include "plgDispatch.h"
#include "../pnMessage/plTimeMsg.h"
#include "hsTimer.h"
#include "../plMessage/plAnimCmdMsg.h"

// static vars
char plAGMasterSDLModifier::AGMasterVarNames::kStrAtcs[]="atcs";
char plAGMasterSDLModifier::AGMasterVarNames::kStrBlends[]="blends";

UInt32 plAGMasterSDLModifier::IApplyModFlags(UInt32 sendFlags)
{
	// ugly hack so bug light animation state isn't stored on the server
	if (stricmp(GetTarget()->GetKeyName(), "RTOmni-BugLightTest") == 0)
		return (sendFlags | plSynchedObject::kDontPersistOnServer | plSynchedObject::kIsAvatarState);
	// ditto for the KI light
	if (stricmp(GetTarget()->GetKeyName(), "RTOmniKILight") == 0)
		return (sendFlags | plSynchedObject::kDontPersistOnServer | plSynchedObject::kIsAvatarState);

	return sendFlags;
}

//
// copy blends values from current state into sdl
//
void plAGMasterSDLModifier::IPutBlends(plStateDataRecord* state, plAGMasterMod* agMaster)
{
	int numBlends = agMaster->GetNumPrivateAnimations();	// each private anim has a blend value
	plSimpleStateVariable* blendsVar = state->FindVar(AGMasterVarNames::kStrBlends);
	if (blendsVar->GetCount() != numBlends)
		blendsVar->Alloc(numBlends);

	// sdl copy
	int i;
	for(i=0;i<numBlends; i++)
	{
		blendsVar->Set((UInt8)(agMaster->GetAnimInstance(i)->GetBlend() * 255), i);
	}
}


//
// Copy atcs from current state into sdl
//
void plAGMasterSDLModifier::IPutCurrentStateIn(plStateDataRecord* dstState)
{
	plSceneObject* sobj=GetTarget();
	hsAssert(sobj, "plAGMasterSDLModifier, nil target");
	
	plAGMasterMod* agMaster=IGetObjectsAGMasterMod(sobj);
	hsAssert(agMaster, "nil AGMasterMod");

	if (agMaster)
	{
		IPutBlends(dstState, agMaster);

		int numAnims = agMaster->GetNumATCAnimations();		
		plSDStateVariable* atcsVar = dstState->FindSDVar(AGMasterVarNames::kStrAtcs);
		if (atcsVar->GetCount() != numAnims)
			atcsVar->Resize(numAnims);

		// copy atcs to sdl 
		int i;
		for(i=0;i<numAnims; i++)
		{
			plStateDataRecord* atcStateDataRec = atcsVar->GetStateDataRecord(i);
			plAnimTimeConvert* animTimeConvert = agMaster->GetATCAnimInstance(i)->GetTimeConvert();

			IPutATC(atcStateDataRec, animTimeConvert);
		}
	}
}

//
// Given a scene object, find and return it's AGMasterMod
//
plAGMasterMod* plAGMasterSDLModifier::IGetObjectsAGMasterMod(plSceneObject* obj)
{
	int count = obj->GetNumModifiers();

	for (int i = 0; i < count; i++)
	{
		plAGMasterMod * avMod = const_cast<plAGMasterMod*>(plAGMasterMod::ConvertNoRef(obj->GetModifier(i)));
		if(avMod)
			return avMod;
	}

	return nil;
}

//
// Apply state in SDL record to current animation state 
//
void plAGMasterSDLModifier::ISetCurrentBlends(const plStateDataRecord* state, plAGMasterMod* objAGMaster)
{
	// Check Blends
	plSimpleStateVariable* blendsVar = state->FindVar(AGMasterVarNames::kStrBlends);
	if (blendsVar->IsUsed())
	{		
		int i;
		if (blendsVar->GetCount() != objAGMaster->GetNumPrivateAnimations())
			return; // bogus state

		for (i=0;i<blendsVar->GetCount();i++)
		{
			UInt8 blend;
			blendsVar->Get(&blend, i);
			objAGMaster->GetAnimInstance(i)->SetBlend(blend / 255.f);
		}
	}
}

//
// Change the object's animation state to reflect what is specified in the 
// stateDataRecord.
//
void plAGMasterSDLModifier::ISetCurrentStateFrom(const plStateDataRecord* srcState)
{
	plSceneObject* sobj=GetTarget();
	hsAssert(sobj, "plAGMasterSDLModifier, nil target");
	
	plAGMasterMod* objAGMaster=IGetObjectsAGMasterMod(sobj);
	hsAssert(objAGMaster, "can't find object's AGMasterSDLState");
	
	ISetCurrentBlends(srcState, objAGMaster);

	plSDStateVariable* atcsVar = srcState->FindSDVar(AGMasterVarNames::kStrAtcs);
	if (atcsVar->IsUsed())
	{
		if (objAGMaster->GetNumATCAnimations() != atcsVar->GetCount())
			return;

		int i;
		for(i=0;i<atcsVar->GetCount(); i++)
		{
			plStateDataRecord* atcStateDataRec = atcsVar->GetStateDataRecord(i);
			plAnimTimeConvert* objAtc = objAGMaster->GetATCAnimInstance(i)->GetTimeConvert();	// dst					
			ISetCurrentATC(atcStateDataRec, objAtc);
			objAtc->EnableCallbacks(false);
		}
		objAGMaster->IRegForEval(objAGMaster->HasRunningAnims());

		// Force one eval, then re-enable all the callbacks
		double time = (hsTimer::GetSysSeconds() - hsTimer::GetDelSysSeconds());

		if (objAGMaster->fIsGrouped && objAGMaster->fMsgForwarder)
		{
			hsScalar animTimeFromWorldTime = (objAGMaster->GetNumATCAnimations() > 0) ? objAGMaster->GetATCAnimInstance(0)->GetTimeConvert()->WorldToAnimTimeNoUpdate(time) : 0.0f;

			plAGCmdMsg *msg = TRACKED_NEW plAGCmdMsg();
			msg->SetCmd(plAGCmdMsg::kSetAnimTime);
			msg->fAnimTime = animTimeFromWorldTime;
			msg->AddReceiver(objAGMaster->fMsgForwarder->GetKey());
			plgDispatch::MsgSend(msg);
		}
		else
		{
			objAGMaster->AdvanceAnimsToTime(time);
		}

		for (i = 0; i < objAGMaster->GetNumATCAnimations(); i++)
			objAGMaster->GetATCAnimInstance(i)->GetTimeConvert()->EnableCallbacks(true);
	}
}