root/deus/KeySeeker.h

// KeySeeker.h
// interface for KeySeeker class, the main routine for regression planning from 
// author-defined keyframes
// Part of the UIUC SigArt 2003 project DEUS
// Written 03/2003 by Steve Hanneke
#ifndef __KEYSEEKER_H__
#define __KEYSEEKER_H__

//#include "director.h"
#include "RegressionPlanner.h"

class KeySeeker
{
public:
    
    KeySeeker() 
    {attempts = 0; MAX_ATTEMPTS = 1;TIME_LIMIT = 60;}
    
    // Seek
    //  given the root of the story graph, Seek will try to develop and execute
    //  each author-defined subplot of events
    ///~ if things don't work out in a specific amount of time (or maybe depth), 
    ///~ try the alternative author-defined subplots
    int NewSeek(StoryNode* root);
    int ContinueSeek(StoryNode* root);
    int Resatisfy(void);
    bool NoMoreKeyFrames(void);
    
    // public variables
    int MAX_ATTEMPTS;  // number of times to try to seek a story node before indicating that 
                       // the caller should move on to another node and come back to it
    int TIME_LIMIT;    // amount of time we have for each call to produce results

private:
  
    // private member functions

    int Achieve(KeyFrameNode* frame);

    void ResetAttempteds(KeyFrameNode* frame);

    int PlanAndExecute(KeyFrameNode* frame);

    void ResetTimer(void) { timer = time(0); }
    
    // private member data

    int attempts;
    unsigned int timer;
    RegressionPlanner RP;
};

#endif