// =================================================================================================
// Sample Mind for simple 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 Mind() { 
    var wantedx = -1;
    var wantedy = -1;
    const gridsize = 50;
    var GRID = new Array(gridsize);
    for (var gi = 0; gi < gridsize ; gi++)  {
      GRID[gi] = new Array(gridsize);		// each element is an array 
      for (var gj = 0; gj < gridsize ; gj++) {
       GRID[gi][gj] = false;
      }
     }
     for (var gia = 0; gia < gridsize; gia++) {
         GRID[0][gia] = true;
         GRID[gia][0] = true;
         GRID[gridsize - 1][gia] = true;
         GRID[gia][gridsize - 1] = true;
     }
//--- public functions / interface / API ----------------------------------------------------------


	this.newRun = function()
	{
	};
/*const ACTION_LEFT 		= 0;		   
const ACTION_RIGHT 		= 1;
const ACTION_UP 			= 2;		 
const ACTION_DOWN 		= 3;
const ACTION_STAYSTILL 		= 4;*/

	this.getAction = function ( x )		// x is an array of [ ai, aj, ei, ej ]
	{
	    
	    if (wantedx != -1 && wantedy != -1 && wantedx == x[0] && wantedy == x[1]) {
	        GRID[wantedx][wantedy] = true;
	    }
	    if (x[0] > x[2] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	        if (x[1] > x[3] && x[0] - x[2] > x[1] - x[3] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	            wantedx = x[0];
	            wantedy = x[1] + 1;
    	        return 2;
            }
            else if (x[1] < x[3] && x[0] - x[2] > x[3] - x[1] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	            wantedx = x[0];
	            wantedy = x[1] - 1;
	            return 3;
	        }
            else {
	        wantedx = x[0] + 1;
	        wantedy = x[1];
	        return 1
            }
	    }
	    else if (x[0] < x[2] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	        if (x[1] > x[3] && x[2] - x[0] > x[1] - x[3] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	            wantedx = x[0];
	            wantedy = x[1] + 1;
    	        return 2;
            }
            else if (x[1] < x[3] && x[2] - x[0] > x[3] - x[1] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	            wantedx = x[0];
	            wantedy = x[1] - 1;
	            return 3;
	        }
            else {
	            wantedx = x[0] - 1;
	            wantedy = x[1];
	            return 0;
            }
	    }
	    else if (x[1] > x[3] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	        wantedx = x[0];
	        wantedy = x[1] + 1;
	        return 2;
	    }
	    else if (x[1] < x[3] && wantedx != x[0] && wantedy != x[1] && GRID[x[0]][x[1]] == false) {
	        wantedx = x[0];
	        wantedy = x[1] - 1;
	        return 3;
	    }
	 return  ( randomintAtoB (0,4) );		// Ignore enemy. Just move randomly 
	};


	this.endRun = function()
	{
	};


}