BipedController.h

#pragma once
#include "KeyFrame.h"

namespace ParaEngine
{
    /* forward declarition */
    class CAIBase;
    class CBaseObject;
    class CBipedObject;
    class IGameObject;

    class CBipedController
    {
    public:
        CBipedController(CAIBase* pAI);
        CBipedController(void);
        virtual ~CBipedController(void);
    private:
        bool    m_bSuspended;
        CAIBase*        m_pAI;

    protected:
        float   m_fTimeElapsed;
    
    public:
        bool IsActive();
        virtual void Suspend();
        virtual void Resume();
        virtual void SetTime(float fTime);
        float GetTime();
        IGameObject* GetClosestBiped(IGameObject* pInput);

        IGameObject* FindBiped(IGameObject* pInput, const std::string& searchString);

        CBipedObject* GetBiped();
        void SetAI(CAIBase* pAI);
        
        virtual void FrameMove(float fDeltaTime);
    };

    class CFollowCtrler : public CBipedController
    {
    public:
        CFollowCtrler(void);
        CFollowCtrler(CAIBase* pAI);
        virtual ~CFollowCtrler(void);
    private:
        std::string     m_sFollowTarget;
        float   m_fRadius;
        float   m_fAngleShift;
    public:
        /*
        * Follow a biped at a specified circle position.
        * @param obj: format "sName radius angle" | "sName"
        * sName: it is the name of the biped to follow,
        * radius: [optional, default to 2.5f] it is the default radius around the target biped. it will control the biped to try it best to stand on this circle.
        * angle: [optional, default to Pi] it will control the biped to stand beside the target with the target facing shifted by this value. 
        * note that +-Pi means behind the biped. 
        * e.g. "lixizhi", "lixizhi 2.5 3.14", "lixizhi 3.0 0", "lixizhi 3.0 1.57", "lixizhi 3.0 -1.57"
        */
        void SetFollowTarget(const std::string& obj);
        const std::string& GetFollowTarget();

        virtual void FrameMove(float fDeltaTime);
    };
}