#include "myestimate.h"
#include <algorithm> 
using namespace std;
#include <math.h>

// Estimation function for the remaining distance to the goal.

const int  estimate(enmEstimates m,  const int &rPos, const int &cPos,const int & rDest, const int & cDest) 
{
	int rd, cd, d;
	rd=rDest-rPos;
	cd=cDest-cPos;         

	switch(m)
	{
	 case undefined:
	 case Manhattan:
 	  // Manhattan distance
	  d=abs(rd)+abs(cd);
	 break;
	 case Euclidian:
	  // Euclidian Distance
	  d=static_cast<int>(sqrt(double(rd*rd+cd*cd)));
	 break;
	 case Chebyshev:
	  // Chebyshev distance
	  d=max(abs(rd), abs(cd));
	 break; 
	}



	const int iFACTOR=10;
	return(d * iFACTOR);
}