# Solution to level 8 in Untrusted: http://alex.nisnevich.com/untrusted/

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``````/*******************
* intoTheWoods.js *
*******************
*
* Ah, you're out of the woods now. Or into the woods, as the
* case may be.
*
* So take a deep breath, relax, and remember what you're here
* for in the first place.
*
* I've traced its signal and the Algorithm is nearby. You'll
* need to go through the forest and across the river, and
* you'll reach the fortress where it's kept. Their defences
* are light, and we should be able to catch them off-guard.
*/

function startLevel(map) {
// NOTE: In this level alone, map.placeObject is allowed to
//overwrite existing objects.

map.displayChapter('Chapter 2\nRaiders of the Lost Algorithm');

map.placePlayer(2, map.getHeight() - 1);

var functionList = {};

functionList['fortresses'] = function () {
function genRandomValue(direction) {
if (direction === "height") {
return Math.floor(Math.random() * (map.getHeight()-3));
} else if (direction === "width") {
return Math.floor(Math.random() * (map.getWidth()+1));
}
}

var x = genRandomValue("width");
var y = genRandomValue("height");

for (var i = x-2; i < x+2; i++) {
map.placeObject(i,y-2, 'block');
}
for (var i = x-2; i < x+2; i++) {
map.placeObject(i,y+2, 'block');
}

for (var j = y-2; j < y+2; j++) {
map.placeObject(x-2,j, 'block');
}

for (var j = y-2; j < y+2; j++) {
map.placeObject(x+2,j, 'block');
}
};

functionList['generateForest'] = function () {
for (var i = 0; i < map.getWidth(); i++) {
for (var j = 0; j < map.getHeight(); j++) {

// initialize to empty if the square contains a forest already
if (map.getObjectTypeAt(i, j) === 'tree') {
// remove existing forest
map.placeObject(i,j, 'empty');
}

if (map.getPlayer().atLocation(i,j) ||
map.getObjectTypeAt(i, j) === 'block' ||
map.getObjectTypeAt(i, j) === 'exit') {
continue;
}

var rv = Math.random();
if (rv < 0.45) {
map.placeObject(i, j, 'tree');
}
}
}
map.refresh();
};

functionList['movePlayerToExit'] = function () {
map.writeStatus("Permission denied.");
}

functionList['pleaseMovePlayerToExit'] = function () {
map.writeStatus("I don't think so.");
}

functionList['movePlayerToExitDamnit'] = function () {
map.writeStatus("So, how 'bout them ?");
}

// generate forest
functionList['generateForest']();

// generate fortresses
functionList['fortresses']();
functionList['fortresses']();
functionList['fortresses']();
functionList['fortresses']();

map.getPlayer().setPhoneCallback(functionList["generateForest"]);

map.placeObject(map.getWidth()-1, map.getHeight()-1, 'exit');
}

function validateLevel(map) {
map.validateAtLeastXObjects(100, 'tree');
map.validateExactlyXManyObjects(1, 'exit');
}
``````