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# anonymous/untrusted-lvl6-solution.jsSecret Created Apr 16, 2014

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Solution to level 6 in Untrusted: http://alex.nisnevich.com/untrusted/
 /**************** * drones101.js * **************** * * Do you remember, my dear Professor, a certain introductory * computational rationality class you taught long ago? Assignment * #2, behavior functions of autonomous agents? I remember that one * fondly - but attack drones are so much easier to reason about * when they're not staring you in the face, I would imagine! */ function startLevel(map) { function moveToward(obj, type) { var target = obj.findNearest(type); var leftDist = obj.getX() - target.x; var upDist = obj.getY() - target.y; var direction; if (upDist == 0 && leftDist == 0) { return; } if (upDist > 0 && upDist >= leftDist) { direction = 'up'; } else if (upDist < 0 && upDist < leftDist) { direction = 'down'; } else if (leftDist > 0 && leftDist >= upDist) { direction = 'left'; } else { direction = 'right'; } if (obj.canMove(direction)) { obj.move(direction); } } map.defineObject('attackDrone', { 'type': 'dynamic', 'symbol': 'd', 'color': 'red', 'onCollision': function (player) { player.killedBy('an attack drone'); }, 'behavior': function (me) { moveToward(me, 'player'); } }); map.placePlayer(1, 1); map.placeObject(map.getWidth()-2, 12, 'attackDrone'); map.placeObject(map.getWidth()-1, 12, 'exit'); map.placeObject(map.getWidth()-1, 11, 'block'); map.placeObject(map.getWidth()-2, 11, 'block'); map.placeObject(map.getWidth()-1, 13, 'block'); map.placeObject(map.getWidth()-2, 13, 'block'); map.placeObject(1, 1, 'block'); } function validateLevel(map) { map.validateExactlyXManyObjects(1, 'exit'); }