llhudeffectlookat.h

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#ifndef LL_LLHUDEFFECTLOOKAT_H
#define LL_LLHUDEFFECTLOOKAT_H

#include "llhudeffect.h"

class LLViewerObject;
class LLVOAvatar;
class LLAttentionSet;

typedef enum e_lookat_type
{
        LOOKAT_TARGET_NONE,
        LOOKAT_TARGET_IDLE,
        LOOKAT_TARGET_AUTO_LISTEN,
        LOOKAT_TARGET_FREELOOK,
        LOOKAT_TARGET_RESPOND,
        LOOKAT_TARGET_HOVER,
        LOOKAT_TARGET_CONVERSATION,
        LOOKAT_TARGET_SELECT,
        LOOKAT_TARGET_FOCUS,
        LOOKAT_TARGET_MOUSELOOK,
        LOOKAT_TARGET_CLEAR,
        LOOKAT_NUM_TARGETS
} ELookAtType;

class LLHUDEffectLookAt : public LLHUDEffect
{
public:
        friend class LLHUDObject;

        /*virtual*/ void markDead();
        /*virtual*/ void setSourceObject(LLViewerObject* objectp);

        BOOL setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position);
        void clearLookAtTarget();

        ELookAtType getLookAtType() { return mTargetType; }
        const LLVector3& getTargetPos() { return mTargetPos; }
        const LLVector3d& getTargetOffset() { return mTargetOffsetGlobal; }
        bool calcTargetPosition();

protected:
        LLHUDEffectLookAt(const U8 type);
        ~LLHUDEffectLookAt();

        /*virtual*/ void update();
        /*virtual*/ void render();
        /*virtual*/ void packData(LLMessageSystem *mesgsys);
        /*virtual*/ void unpackData(LLMessageSystem *mesgsys, S32 blocknum);
        
        // lookat behavior has either target position or target object with offset
        void setTargetObjectAndOffset(LLViewerObject *objp, LLVector3d offset);
        void setTargetPosGlobal(const LLVector3d &target_pos_global);

public:
        static BOOL sDebugLookAt;

private:
        ELookAtType                                     mTargetType;
        LLVector3d                                      mTargetOffsetGlobal;
        LLVector3                                       mLastSentOffsetGlobal;
        F32                                                     mKillTime;
        LLFrameTimer                            mTimer;
        LLVector3                                       mTargetPos;
        F32                                                     mLastSendTime;
        LLAttentionSet*                         mAttentions;
};

#endif // LL_LLHUDEFFECTLOOKAT_H

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