blender/source/gameengine/Ketsji/KX_CameraActuator.h

/*
 * KX_CameraActuator.h
 *
 *
 * ***** 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 *****
 */

/** \file KX_CameraActuator.h
 *  \ingroup ketsji
 */

#ifndef __KX_CAMERAACTUATOR_H__
#define __KX_CAMERAACTUATOR_H__

#include "SCA_IActuator.h"
#include "MT_Scalar.h"
#include "SCA_LogicManager.h"

/**
 * The camera actuator does a Robbie Muller perspective for you. This is a
 * weird set of rules that positions the camera sort of behind the object,
 * tracking, while avoiding any objects between the 'ideal' position and the
 * actor being tracked.
 */


class KX_CameraActuator : public SCA_IActuator
{
	Py_Header
private :
	/** Object that will be tracked. */
	SCA_IObject *m_ob;

	/** height (float), */
	//const MT_Scalar m_height;
	/** min (float), */
	//const MT_Scalar m_minHeight;
	/** max (float), */
	//const MT_Scalar m_maxHeight;
	
	/** height (float), */
	float m_height;
	
	/** min (float), */
	float m_minHeight;
	
	/** max (float), */
	float m_maxHeight;
	
	/** axis the camera tries to get behind: +x/+y/-x/-y */
	short m_axis;
	
	/** damping (float), */
	float m_damping;

	/* get the KX_IGameObject with this name */
	CValue *findObject(const char *obName);

	/* parse x or y to a toggle pick */
	bool string2axischoice(const char *axisString);
	
 public:
	static STR_String X_AXIS_STRING;
	static STR_String Y_AXIS_STRING;
	
	/**
	 * Set the bool toggle to true to use x lock, false for y lock
	 */
	KX_CameraActuator(

		SCA_IObject *gameobj,
		//const CValue *ob,
		SCA_IObject *ob,
		float hght,
		float minhght,
		float maxhght,
		short axis,
		float damping
	);


	~KX_CameraActuator();



	/** Methods Inherited from  CValue */
	CValue* GetReplica();
	virtual void ProcessReplica();
	

	/** Methods inherited from SCA_IActuator */
	virtual bool Update(
		double curtime,
		bool frame
	);
	virtual bool	UnlinkObject(SCA_IObject* clientobj);

	/** Methods inherited from SCA_ILogicBrick */
	virtual void	Relink(CTR_Map<CTR_HashedPtr, void*> *obj_map);

#ifdef WITH_PYTHON

	/* --------------------------------------------------------------------- */
	/* Python interface ---------------------------------------------------- */
	/* --------------------------------------------------------------------- */

	/* set object to look at */
	static PyObject*	pyattr_get_object(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
	static int			pyattr_set_object(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value);

#endif  /* WITH_PYTHON */

};

#endif  /* __KX_CAMERAACTUATOR_H__ */