CWE-ou-minkata/Sources/Plasma/PubUtilLib/plAvatar/plAvTaskSeek.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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it under the terms of the GNU General Public License as published by
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GNU General Public License for more details.

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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,
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*==LICENSE==*/
#ifndef PLAVTASKSEEK_INC
#define PLAVTASKSEEK_INC
#pragma once

#include "plAvatarTasks.h"
#include "hsQuat.h"
#include "hsGeometry3.h"

class plArmatureMod;
class plArmatureBrain;
class plAvBrainHuman;
class plSceneObject;

// PLAVTASKSEEK
class plAvTaskSeek : public plAvTask
{
public:
    static hsBool fLogProcess;
        
    enum State {
        kSeekRunNormal,
        kSeekAbort,
    };
    UInt8 fState;

    enum 
    {
        kSeekFlagUnForce3rdPersonOnFinish   = 0x1,
        kSeekFlagForce3rdPersonOnStart      = 0x2,
        kSeekFlagNoWarpOnTimeout            = 0x4,
        kSeekFlagRotationOnly               = 0x8,
    };

    plAvTaskSeek();
    plAvTaskSeek(plKey target);
    plAvTaskSeek(plAvSeekMsg *msg);
    plAvTaskSeek(plKey target, plAvAlignment align, const char *animName, bool moving);

    void SetTarget(plKey target);
    void SetTarget(hsPoint3 &pos, hsPoint3 &lookAt);

    /** Initiate the task; make sure we're running on the right type of brain, save off
        user input state, and turn off any other running behaviors.*/
    virtual hsBool Start(plArmatureMod *avatar, plArmatureBrain *brain, double time, hsScalar elapsed);

    /** Progress towards the goal using a combination of walking and cheating-via-sliding.
        Returns true if we're still working on it; false if we're done. */
    
    virtual hsBool Process(plArmatureMod *avatar, plArmatureBrain *brain, double time, hsScalar elapsed);

    /** Restore user input state, etc. */
    virtual void Finish(plArmatureMod *avatar, plArmatureBrain *brain, double time, hsScalar elapsed);
    
    /** clear our target, and when we try to eval, we'll just finish */
    virtual void LeaveAge(plArmatureMod *avatar);

    /** Spew "useful" information to the game screen. Used when Avatar.Debug is active. */
    virtual void DumpDebug(const char *name, int &x, int&y, int lineHeight, char *strBuf, plDebugText &debugTxt);

    void DumpToAvatarLog(plArmatureMod *avatar);
        
    CLASSNAME_REGISTER( plAvTaskSeek );
    GETINTERFACE_ANY( plAvTaskSeek, plAvTask );

protected:

    /////////////////////////////////////////////////////////////////////////////////////
    //
    // METHODS
    //
    /////////////////////////////////////////////////////////////////////////////////////
    
    /** Called by constructors */
    void IInitDefaults();

    /** Make some observations about our current relation to our target.
        Done every frame. */
    hsBool IAnalyze(plArmatureMod *avatar);

    /** Progress towards the goal. We get as close as we can by just pushing the same
        buttons as the user (forward, turn, etc.) when we're really close we slide
        around a bit so we can wind up on the *exact* initial orientation. */
    hsBool IMoveTowardsGoal(plArmatureMod *avatar, plAvBrainHuman *brain, double time, hsScalar elapsed);

    /** Okay, we're in the pure cheating mode now. Try to wrap it up;
        returns true when it's finally there. */
    bool ITryFinish(plArmatureMod *avatar, plAvBrainHuman *brain, double time, hsScalar elapsed);

    /** Final cheating for position */
    hsBool IFinishPosition(hsPoint3 &newPosition, plArmatureMod *avatar, plAvBrainHuman *brain,
                           double time, hsScalar elapsed);

    /** Final cheating for rotation */
    hsBool IFinishRotation(hsQuat &newRotation, plArmatureMod *avatar, plAvBrainHuman *brain,
                           double time, hsScalar elapsed);

    /** If our target's moving, cache its new position and orientation for later math */
    hsBool IUpdateObjective(plArmatureMod *avatar);

    /////////////////////////////////////////////////////////////////////////////////////
    //
    // VARS
    //
    /////////////////////////////////////////////////////////////////////////////////////

    plSceneObject * fSeekObject;            // the seek target....  
    hsQuat fSeekRot;                        // The (current) orientation of our objective
    hsPoint3 fSeekPos;                      // The (current) position of our objective
    bool fMovingTarget;                     // do we check our target's position each frame?
    // animation alignment:
    // sometimes your seek position depends on a particular animation
    // for example, you can say "find a good start point so that you can play this animation
    // and have your handle wind up here" i.e: aligntype = "kAlignHandleAnimEnd"
    plAvAlignment   fAlign;     // how to line up with the seek point
    const char * fAnimName;                 // an (optional) anim to use to line up our target
                                            // so you can say "seek to a place where your hand
                                            // will be here after you play animation foo"

    hsPoint3 fPosition;                     // our current position
    hsQuat fRotation;                       // our current rotation
    
    // These are set to true once we EVER get close enough to the goal, so that if we fall out
    // of range from the anim blend out, we don't later try and correct again, and get in a fun
    // little back-and-forth loop.
    hsBool fPosGoalHit;
    hsBool fRotGoalHit;

    hsBool fStillPositioning;               // haven't yet reached the final position
    hsBool fStillRotating;                  // haven't yet reached the final orientation
    
    hsVector3 fGoalVec;                     // vec from us to the goal
    hsScalar fDistance;                     // how far to the goal?
    hsScalar fAngForward;                   // 1.0 = goal is forward; -1.0 = goal is backward
    hsScalar fAngRight;                     // 1.0 = goal is directly right; -1.0 = goal is directly left
    hsScalar fDistForward;                  // distance straight forward to goal plane
    hsScalar fDistRight;                    // distance straight right to goal plane

    hsScalar fShuffleRange;
    hsScalar fMaxSidleAngle;        // in right . goal
    hsScalar fMaxSidleRange;        // in feet
    hsScalar fMinFwdAngle;          // in fwd . goal
    hsScalar fMaxBackAngle;         // in fwd . goal
    
    double   fStartTime;
    UInt8    fFlags;
    plKey    fNotifyFinishedKey;    // Send a message to this key when we're done.
};

#endif