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Solution to level 13 in Untrusted: http://alex.nisnevich.com/untrusted/
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/* | |
* 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) { | |
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) { | |
// Create a new state variable to keep track of our orientation | |
// Let's start out facing right | |
if(!me.facing) { me.facing = 'right'; } | |
// Create a helper function for rotation | |
// Takes 1 for clockwise rotation, -1 for counter-clockwise | |
var directions = ['up', 'right', 'down', 'left']; | |
var rotate = function(direction) { | |
var curr_direction_index = directions.indexOf(me.facing); | |
// The +4 is because JS % preserves dividend sign | |
me.facing = directions[(curr_direction_index+direction+4)%4]; | |
}; | |
// Rotate clockwise until we can go forward | |
while(!me.canMove(me.facing)) { rotate(1); } | |
// Go forward one block | |
me.move(me.facing); | |
// Slop back to the left so we bias ourselves | |
// as a left-handed wall-follower | |
rotate(-1); | |
} | |
}); | |
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; | |
} | |
} | |
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