// =================================================================================================
// Sample Mind for more complex starter WWM World  
// =================================================================================================




// World tells us agent position and enemy position
// World does not tell us of existence of walls
// if return invalid move (not empty square) World just ignores it and we miss a turn 


 

function randomPick ( a, b )
{
 if ( randomBoolean() ) 
  return a;
 else
  return b;
}




function Mind() { 


//--- public functions / interface / API ----------------------------------------------------------


	this.newRun = function()
	{
	};

	this.endRun = function()
	{
	};
    nearest = function(locations, ai,aj) {
        var dis;
        var min;
        var result = [ai, aj]
        for(var i = 1; i < locations.length; i++) {
            for(var j = 0; j < locations.length; j++) {
                if(locations[i][j]) {
                    dis = Math.sqrt((ai-i)*(ai-i) + (aj-j)*(aj-j));
                    if (min == undefined || dis < min) {
                        min = dis;
                        result[0] = i;
                        result[1] = j;
                    }
                }
            }
        }
        return result;
    }


	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];
        var stomach = x[4];
        var stomach_max_storage = x[5];
        food_locations = x[6];
        var foodIAndJ = nearest(food_locations, ai, aj);
        //if hungry try eat without being killed
        if(stomach_max_storage/2 > stomach) {
            console.log("is hungryt", stomach);
            if (Math.abs(ej - aj) < 5 || Math.abs(ei - ai) < 5) {
                if ( ej < aj ) 	return ( randomPick ( ACTION_UP,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 
    		    if ( ej > aj ) 	return ( randomPick ( ACTION_DOWN,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 
    
    		    if ( ei < ai ) 	return ( randomPick ( ACTION_RIGHT,	randomPick(ACTION_UP,ACTION_DOWN) 		)); 
    		    if ( ei > ai ) 	return ( randomPick ( ACTION_LEFT,	randomPick(ACTION_UP,ACTION_DOWN) 		));
            } else {
		    
    		    if ( foodIAndJ[1] > aj ) 	return ( randomPick ( ACTION_UP,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	));
    		    if ( foodIAndJ[1] < aj ) 	return ( randomPick ( ACTION_DOWN,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 
    		    if ( foodIAndJ[0] > ai ) 	return ( randomPick ( ACTION_RIGHT,	randomPick(ACTION_UP,ACTION_DOWN) 		)); 
    		    if ( foodIAndJ[0] < ai ) 	return ( randomPick ( ACTION_LEFT,	randomPick(ACTION_UP,ACTION_DOWN) 		));
            }
		//if strong hunt the enemy
        } else if ((stomach_max_storage*0.75) < stomach) {
            console.log("Strongt", stomach);

            if ( ej > aj ) 	return ( randomPick ( ACTION_UP,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 
		    if ( ej < aj ) 	return ( randomPick ( ACTION_DOWN,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 

		    if ( ei > ai ) 	return ( randomPick ( ACTION_RIGHT,	randomPick(ACTION_UP,ACTION_DOWN) 		)); 
		    if ( ei < ai ) 	return ( randomPick ( ACTION_LEFT,	randomPick(ACTION_UP,ACTION_DOWN) 		)); 
		    
        } else {
            //try to surive.
            // if strictly move away, will get stuck at wall, so introduce randomness
            console.log("surivingt", stomach);

		    if ( ej < aj ) 	return ( randomPick ( ACTION_UP,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 
		    if ( ej > aj ) 	return ( randomPick ( ACTION_DOWN,	randomPick(ACTION_RIGHT,ACTION_LEFT) 	)); 

		    if ( ei < ai ) 	return ( randomPick ( ACTION_RIGHT,	randomPick(ACTION_UP,ACTION_DOWN) 		)); 
		    if ( ei > ai ) 	return ( randomPick ( ACTION_LEFT,	randomPick(ACTION_UP,ACTION_DOWN) 		));
        }
		 

 		return  ( randomintAtoB (0,3) );
	};



}