CWE-ou-minkata/Sources/Plasma/FeatureLib/pfAnimation/plLineFollowMod.h

/*==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==*/

#ifndef plLineFollowMod_inc
#define plLineFollowMod_inc

#include "../pnModifier/plMultiModifier.h"
#include "hsGeometry3.h"
#include "hsMatrix44.h"

class plAnimPath;
class plSceneObject;
class plStereizer;
class plListenerMsg;

class plLineFollowMod : public plMultiModifier
{
public:
	enum FollowMode {
		kFollowObject,
		kFollowListener,
		kFollowCamera,
		kFollowLocalAvatar,
	};
	enum RefType {
		kRefParent,
		kRefObject,
		kRefStereizer
	};

	
	enum {
		kNone			= 0x0,
		kFullMatrix		= 0x1,
		kOffsetFeet		= 0x2,
		kOffsetAng		= 0x4,
		kOffset			= kOffsetFeet | kOffsetAng,
		kOffsetClamp	= 0x8,
		kForceToLine	= 0x10,
		kSpeedClamp		= 0x20,
		kSearchPosPop	= 0x40	// Temp flag, gets set every time the target pops in position
	};
protected:
	FollowMode			fFollowMode;
	UInt16				fFollowFlags;

	plAnimPath*			fPath;
	plSceneObject*		fPathParent;

	plSceneObject*		fRefObj;

	mutable	hsPoint3	fSearchPos;

	hsTArray<plStereizer*>		fStereizers;

	hsScalar			fTanOffset;
	hsScalar			fOffset;
	hsScalar			fOffsetClamp;
	hsScalar			fSpeedClamp;

	virtual hsBool IEval(double secs, hsScalar del, UInt32 dirty);
	
	virtual hsBool		IGetSearchPos();
	virtual void		ISetTargetTransform(int iTarg, const hsMatrix44& tgtXfm);
	virtual void		ISetPathTransform();

	virtual hsBool		IGetTargetTransform(hsPoint3& searchPos, hsMatrix44& tgtXfm);
	virtual hsBool		IOffsetTargetTransform(hsMatrix44& tgtXfm);
	virtual hsMatrix44	ISpeedClamp(plCoordinateInterface* ci, const hsMatrix44& unclTgtXfm);
	hsMatrix44			IInterpMatrices(const hsMatrix44& m0, const hsMatrix44& m1, hsScalar parm);
	void				ICheckForPop(const hsPoint3& oldPos, const hsPoint3& newPos);

	void				ISetupStereizers(const plListenerMsg* listMsg);

	void IUnRegister();
	void IRegister();

public:

	plLineFollowMod();
	~plLineFollowMod();

	CLASSNAME_REGISTER( plLineFollowMod );
	GETINTERFACE_ANY( plLineFollowMod, plMultiModifier );
	
	virtual void Read(hsStream* stream, hsResMgr* mgr);
	virtual void Write(hsStream* stream, hsResMgr* mgr);

	// Export time stuff
	void				SetPath(plAnimPath* path);
	const plAnimPath*	GetPath() const { return fPath; }

	void				SetFollowMode(FollowMode f);
	FollowMode			GetFollowMode() const { return fFollowMode; }

	hsBool				HasOffsetFeet() const { return 0 != (fFollowFlags & kOffsetFeet); }
	hsBool				HasOffsetDegrees() const { return 0 != (fFollowFlags & kOffsetAng); }
	hsBool				HasOffset() const { return 0 != (fFollowFlags & kOffset); }
	hsBool				HasOffsetClamp() const { return 0 != (fFollowFlags & kOffsetClamp); }
	hsBool				HasSpeedClamp() const { return 0 != (fFollowFlags & kSpeedClamp); }

	void				SetOffsetFeet(hsScalar f);
	hsScalar			GetOffsetFeet() const { return fOffset; }

	void				SetOffsetDegrees(hsScalar f);
	hsScalar			GetOffsetDegrees() const { return hsScalarRadToDeg(fOffset); }

	void				SetOffsetClamp(hsScalar f);
	hsScalar			GetOffsetClamp() const { return fOffsetClamp; }

	void				SetForceToLine(hsBool on);
	hsBool				GetForceToLine() const { return 0 != (fFollowFlags & kForceToLine); }

	void				SetSpeedClamp(hsScalar feetPerSec);
	hsScalar			GetSpeedClamp() const { return fSpeedClamp; }

	hsBool				MsgReceive(plMessage* msg);

	virtual void AddTarget(plSceneObject* so);
	virtual void RemoveTarget(plSceneObject* so); 

	void		AddStereizer(const plKey& sterKey);
	void		RemoveStereizer(const plKey& sterKey);
};


class plRailCameraMod : public plLineFollowMod
{

public:

	plRailCameraMod();
	~plRailCameraMod();

	CLASSNAME_REGISTER( plRailCameraMod );
	GETINTERFACE_ANY( plRailCameraMod, plLineFollowMod );
	
	void Init() { fCurrentTime = -1; } // twiddle ourselves so we get ready to go...
	hsPoint3 GetGoal(double secs, hsScalar speed);

protected:
	
	virtual void		ISetTargetTransform(int iTarg, const hsMatrix44& tgtXfm) {fDesiredMatrix = tgtXfm;}
	virtual hsBool		IGetTargetTransform(hsPoint3& searchPos, hsMatrix44& tgtXfm);
	
	hsMatrix44	fDesiredMatrix;
	hsScalar	fCurrentTime;
	hsScalar	fTargetTime;
	hsPoint3	fGoal;
	hsBool		fFarthest;
};
#endif // plLineFollowMod_inc