/*
 * robotMaze.js
 *
 * The blue key is inside a labyrinth, and extracting
 * it will not be easy.
 *
 * It's a good thing that you're a AI expert, or
 * we would have to leave empty-handed.
 */

function startLevel(map) {
    // Hint: you can press R or 5 to "rest" and not move the
    // player, while the robot moves around.

    map.getRandomInt = function(min, max) {
        return Math.floor(Math.random() * (max - min + 1)) + min;
    }

    map.placePlayer(map.getWidth()-1, map.getHeight()-1);
    var player = map.getPlayer();

    map.defineObject('robot', {
        'type': 'dynamic',
        'symbol': 'R',
        'color': 'gray',
        'onCollision': function (player, me) {
            me.giveItemTo(player, 'blueKey');
        },
        'behavior': function (me) {

            if (arr == undefined)
            {
                arr = new Array();
                for (var i = 0; i < 80; i++)
                    {
                    arr[i] = new Array();
                    for (var j = 0; j < 80; j++)
                        arr[i][j] = 0;
                    }
            }

            var min = 9999;
            var x = me.getX();
            var y = me.getY();
            if (y > 15) return;
            var dir = '';
            if (me.canMove('up') && arr[y-1][x] < min) {
                min = arr[y-1][x]; dir='up'; }
            if (me.canMove('left') && arr[y][x-1] < min) {
                min = arr[y][x-1]; dir='left';}
           if (me.canMove('down') && arr[y+1][x] <= min) {
                min = arr[y+1][x]; dir='down'; }
            if (me.canMove('right') && arr[y][x+1] <= min) {
                min = arr[y][x+1]; dir='right';}
            arr[y][x]++;
            me.move(dir);
            }
            });

            var arr;
            map.getPlayer().setPhoneCallback(function () {
            {
            map.setSquareColor(map.getPlayer().getX()-1, map.getPlayer().getY()
            , '#fff');

        }
    });

    map.defineObject('barrier', {
        'symbol': '░',
        'color': 'purple',
        'impassable': true,
        'passableFor': ['robot']
    });

    map.placeObject(0, map.getHeight() - 1, 'exit');
    map.placeObject(1, 1, 'robot');
    map.placeObject(map.getWidth() - 2, 8, 'blueKey');
    map.placeObject(map.getWidth() - 2, 9, 'barrier');

    var autoGeneratedMaze = new ROT.Map.DividedMaze(map.getWidth(), 10);
    autoGeneratedMaze.create( function (x, y, mapValue) {
        // don't write maze over robot or barrier
        if ((x == 1 && y == 1) || (x == map.getWidth() - 2 && y >= 8)) {
            return 0;
        } else if (mapValue === 1) { //0 is empty space 1 is wall
            map.placeObject(x,y, 'block');
        } else {
            map.placeObject(x,y,'empty');
        }
    });
}

function validateLevel(map) {
    map.validateExactlyXManyObjects(1, 'exit');
    map.validateExactlyXManyObjects(1, 'robot');
    map.validateAtMostXObjects(1, 'blueKey');
}

function onExit(map) {
    if (!map.getPlayer().hasItem('blueKey')) {
        map.writeStatus("We need to get that key!");
        return false;
    } else {
        return true;
    }
}