function Mind() 
{ 
    var tmpei = 0;
    var tmpej = 0;
    var tmpai = 0;
    var tmpaj = 0;
    var last_action = 0;
    var action = 0
    var e_dis = 0
    var b_l = true;
    var b_r = true;
    var b_u = true;
    var b_d = true;
    var disi = 0
    var disj = 0
    var nm = false
    var c = 0;
    var array = [];
    
	this.getAction = function ( x )		// x is an array of [ ai, aj, ei, ej ]
	{ 
		var ai = x[0];
		var aj = x[1];
		var ei = x[2];
		var ej = x[3];
		
		
		if(ai == tmpai & aj == tmpaj){
		    nm = true
		}
		else{
		    nm = false
		}
        disi =  (ej - aj);
        if (disi < 0){
            disi = disi * -1
        }
		disj = (ei - ai);
		if (disj < 0){
            disj = disj * -1
        }
		 
		 
		 
		 if (ai == 1 || (last_action == ACTION_LEFT & nm === true)  ){console.log("bl false"); b_l = false;}
		 if (aj == 1 || (last_action == ACTION_DOWN & nm === true) ){ console.log("bd false");  b_d = false;}
		 if (aj == 18 || (last_action == ACTION_UP & nm === true) ){ console.log("bu false"); b_u = false;}
		 if (ai == 18 || (last_action == ACTION_RIGHT & nm === true) ){ console.log("br false");  b_r = false;}
		 
		 if(c === 0){
		 if (  b_u === true ){action = ACTION_UP} else if( b_l === true ){action = ACTION_LEFT} else if(b_d === true){action = ACTION_DOWN} else if(b_r === true){action = ACTION_RIGHT}}
		 if(c === 1){
		 if (  b_r === true ){action = ACTION_RIGHT} else if( b_d === true ){action = ACTION_DOWN} else if(b_l === true){action = ACTION_LEFT} else if(b_u === true){action = ACTION_UP}}
		 if(c === 2){
		 if (  b_d === true ){action = ACTION_DOWN} else if( b_r === true ){action = ACTION_RIGHT} else if(b_u === true ){action = ACTION_UP} else if(b_l === true){action = ACTION_LEFT}}
		 if(c === 3){
		 if ( b_l === true ){action = ACTION_LEFT} else if( b_u === true ){action = ACTION_UP} else if(b_r === true){action = ACTION_RIGHT} else if(b_d === true){action = ACTION_DOWN}}
		 
		 
        if (ei == tmpei & ej == tmpej & disi > 6 & disj > 6 ){
		     tmpei = ei; tmpej = ej; tmpai = ai; tmpaj = aj;
		  action = ACTION_STAYSTILL;}
		 
		 
		 
		 /*
		 if ( ej < aj & b_u === true ){action = ACTION_UP} else if( b_r === true ){action = ACTION_RIGHT} else if(b_r === true){action = ACTION_RIGHT}
		 if ( ej > aj & b_d === true ){action = ACTION_DOWN} else if( b_r === true ){action = ACTION_RIGHT} else if(b_r === true){action = ACTION_RIGHT}

		 if ( ei < ai & b_r === true ){action = ACTION_RIGHT} else if( b_u === true ){action = ACTION_UP} else if(b_d === true){action = ACTION_DOWN}
		 if ( ei > ai & b_l === true ){action = ACTION_LEFT} else if( b_u === true ){action = ACTION_UP} else if(b_d === true){action = ACTION_DOWN} */
		     
		     
        
        last_action = action;
        console.log(ai, aj);
        console.log(action);
        console.log("c" +c);
        if(aj > 14){c = 1; if(ai > 14){c = 2}}
		    
		if(aj < 5){c = 3; if( ai < 5  ){c = 0}}
		
        tmpei = ei; tmpej = ej; tmpai = ai; tmpaj = aj;
        if(nm === false){
            b_l = true; b_r = true; b_u = true; b_d = true;}
            
        
 		return(action);
 		
	};

}