VelCompConst.h

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/*

License

Menge
Copyright © and trademark ™ 2012-14 University of North Carolina at Chapel Hill. 
All rights reserved.

Permission to use, copy, modify, and distribute this software and its documentation 
for educational, research, and non-profit purposes, without fee, and without a 
written agreement is hereby granted, provided that the above copyright notice, 
this paragraph, and the following four paragraphs appear in all copies.

This software program and documentation are copyrighted by the University of North 
Carolina at Chapel Hill. The software program and documentation are supplied "as is," 
without any accompanying services from the University of North Carolina at Chapel 
Hill or the authors. The University of North Carolina at Chapel Hill and the 
authors do not warrant that the operation of the program will be uninterrupted 
or error-free. The end-user understands that the program was developed for research 
purposes and is advised not to rely exclusively on the program for any reason.

IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE AUTHORS 
BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL 
DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS 
DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE 
AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY 
DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY STATUTORY WARRANTY 
OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND 
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS HAVE NO OBLIGATIONS 
TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

Any questions or comments should be sent to the authors {menge,geom}@cs.unc.edu

*/

#ifndef __VEL_COMP_CONST_H__
#define __VEL_COMP_CONST_H__

#include "CoreConfig.h"
#include "VelocityComponents/VelComponent.h"
#include "VelocityComponents/VelComponentFactory.h"
#include "VelocityComponents/VelCompContext.h"

namespace Menge {

    namespace BFSM {


        class MENGE_API ConstVelComponent : public VelComponent {
        public:
            ConstVelComponent();

            ConstVelComponent( const Vector2 & vel );

            void setVelocity( const Vector2 & velocity );

            virtual void setPrefVelocity( const Agents::BaseAgent * agent, const Goal * goal, Agents::PrefVelocity & pVel );

            Vector2 getConstVelocity() const { return _dir * _speed; }

            virtual VelCompContext * getContext();

            friend class ConstVCFactory;
        protected:
            Vector2 _dir;

            float _speed;
        };



        class MENGE_API ConstVCContext : public VelCompContext {
        public:
            ConstVCContext( ConstVelComponent * vc );

            virtual std::string getUIText( const std::string & indent="" ) const;

            virtual void draw3DGL( const Agents::BaseAgent * agt, const Goal * goal );

        protected:
            ConstVelComponent * _vc;
        };


        class MENGE_API ConstVCFactory : public VelCompFactory {
        public:
            ConstVCFactory();

            virtual const char * name() const { return "const"; }

            virtual const char * description() const {
                return "Provides a preferred velocity which is always a constant value (direction and magnitude).";
            };

        protected:
            VelComponent * instance() const { return new ConstVelComponent(); } 
            
            virtual bool setFromXML( VelComponent * vc, TiXmlElement * node, const std::string & behaveFldr ) const;
        
            size_t  _xID;

            size_t  _yID;
        };


        // forward declaration
        class ConstDirVCContext;

        class MENGE_API ConstVelDirComponent : public VelComponent {
        public:
            ConstVelDirComponent();

            ConstVelDirComponent( const Vector2 & vel );

            virtual void setPrefVelocity( const Agents::BaseAgent * agent, const Goal * goal, Agents::PrefVelocity & pVel );

            void setDirection( const Vector2 & dir );

            virtual VelCompContext * getContext();

            friend class ConstDirVCContext;
        protected:
            Vector2 _dir;
        };



        class MENGE_API ConstDirVCContext : public VelCompContext {
        public:
            ConstDirVCContext( ConstVelDirComponent * vc );

            virtual std::string getUIText( const std::string & indent="" ) const;

            virtual void draw3DGL( const Agents::BaseAgent * agt, const Goal * goal );

        protected:
            ConstVelDirComponent * _vc;
        };


        class MENGE_API ConstDirVCFactory : public VelCompFactory {
        public:
            ConstDirVCFactory();

            virtual const char * name() const { return "const_dir"; }

            virtual const char * description() const {
                return "Provides a preferred velocity which is always in a fixed direction but uses the agent's preferred speed.";
            };

        protected:
            VelComponent * instance() const { return new ConstVelDirComponent(); }  
            
            virtual bool setFromXML( VelComponent * vc, TiXmlElement * node, const std::string & behaveFldr ) const;
        
            size_t  _xID;

            size_t  _yID;
        };


        class MENGE_API ZeroVelComponent : public VelComponent {
        public:
            ZeroVelComponent();

            virtual void setPrefVelocity( const Agents::BaseAgent * agent, const Goal * goal, Agents::PrefVelocity & pVel );

            virtual VelCompContext * getContext();

        };


        class MENGE_API ZeroVCContext : public VelCompContext {
        public:
            ZeroVCContext();

            virtual std::string getUIText( const std::string & indent="" ) const;

        };


        class MENGE_API ZeroVCFactory : public VelCompFactory {
        public:
            virtual const char * name() const { return "zero"; }

            virtual const char * description() const {
                return "Provides a preferred velocity which is always the zero velocity.";
            };

        protected:
            VelComponent * instance() const { return new ZeroVelComponent(); }  
        };

        
    }   // namespace BFSM

}   // namespace Menge

#endif  // __VEL_COMP_CONST_H__