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# Autonomous Robot
## donmccurdy
```javascript
map.defineObject('robot', {
// ...
'behavior': function (me) {
me.path = me.path || [];
if (me.path.length) {
me.move(me.path.pop());
} else if (me.canMove('down')) {
me.move('down');
} else if (me.canMove('right')) {
me.move('right');
} else {
me.path = [
'right', 'right', 'right',
'up', 'up', 'up', 'up', 'up',
'left', 'left', 'left', 'left'
];
}
}
});
```
## Jhack (giacgbj)
```javascript
me.move(
me.getX() < 25 || me.getX() > 47 ?
me.canMove('down') ? 'down' : 'right' :
me.canMove('up') ? 'up' : 'right'
);
```
## esolitos
```javascript
if( me.getX() == 1 && me.getY() < 4 ){
me.move('down');
} else if( me.getY() == 4) {
if( me.canMove('right') ) {
me.move('right');
} else {
me.move('down');
}
} else if( me.getY() > 4 ) {
if( me.canMove('right') ) {
me.move('right');
} else if ( me.getX() != map.getWidth() -2 ) {
me.move('up');
} else {
me.move('down');
}
}
```
## KamiSempai
The Sinusoidal droid.
```javascript
if(me.canMove("right")) {
var x = me.getX()+1;
// It's a magic numbers. Don't change!!!
var y = Math.sin(x / 7) * 4 + 4.5;
if(y - me.getY() > 1) {
me.move("down");
}
else if(y - me.getY() < -1) {
me.move("up");
}
else {
me.move("right");
}
}
else {
me.move("down");
}
```
# Portal style
## JustBlackBird
Just press "R" and go through the portals
```javascript
if (player.teleportersAreReady) {
// Do not add teleporters more than once
return;
}
// Place two teleporters at the map
map.placeObject(player.getX(), player.getY() - 1, 'teleporter');
map.placeObject(map.getWidth() - 2, 7, 'teleporter');
// We need teleporters objects, so find them
var objs = map.getDynamicObjects();
var teleporters = [];
for (var i = 0, len = objs.length; i < len; i++) {
if (objs[i].getType() == 'teleporter') {
teleporters.push(objs[i]);
}
}
// Link teleporters one to another
teleporters[0].setTarget(teleporters[1]);
teleporters[1].setTarget(teleporters[0]);
// We need an indicator to know if teleporters already
// in place or not. Use "player" object from the closure
player.teleportersAreReady = true;
```
# pk
Maze solver (works for 11, 12, 13) and any simple connected maze.
Follow a wall to the right, turn counterclockwise each turn first. Remember last direction.
With debug console output.
```javascript
'behavior': function (me) {
var dirs = ['up','right','down','left']
var d = me.dir || 0;
d--;
d = (d < 0)? 3 : d;
var brain = [];
while(!me.canMove(dirs[d])) {
brain.push("can't "+dirs[d]);
d++;
d = (d > 3)? 0 : d;
}
brain.push(dirs[d]+ " ok");
console.log(brain.join(', '))
me.dir = d;
me.move(dirs[d]);
}
```
# ont.rif
Just more simple code for "follow wall to the right".
```javascript
me.dir = me.dir || 'up';
var plan = {
'up': ['left', 'right'],
'right': ['up', 'down'],
'down': ['right', 'left'],
'left': ['down', 'up'],
}[ me.dir ];
if(me.canMove(plan[0]))
me.dir = plan[0];
else if(!me.canMove(me.dir))
me.dir = plan[1];
me.move(me.dir);
```
# civilframe
Brute force.
```javascript
var r = Math.random();
if (r < 0.25) {
me.move('up');
} else if (r < 0.5) {
me.move('down');
} else if (r < 0.65) { // slight propensity to go left
me.move('left');
} else {
me.move('right');
}
```
# mike_perdide
Simple down/right/up/left behavior, with a twist to make the problem more simple for the droid by placing blocks wherever we can.
```javascript
var directions_delta = {
"down": [0, 1],
"up" : [0, -1],
"left": [-1, 0],
"right": [1, 0]
}
var opposites = {
"down": "up",
"up":"down",
"left":"right",
"right":"left"
}
var prev_x = me.getX();
var prev_y = me.getY();
var move_conditionally = function (direction) {
if (!me.canMove(direction) || me.getY()>22) {
return false;
}
me.move(direction);
return true;
};
// We're aiming down & right first
if (!move_conditionally("down")) {
if (!move_conditionally("right")) {
if (!move_conditionally("up")) {
move_conditionally("left");
}
}
}
// Putting blocks where we can to limit the droid options
prev_moves = map.getAdjacentEmptyCells(prev_x, prev_y)
if (prev_moves.length == 1) {
map.placeObject(prev_x, prev_y, "block");
} else if (prev_moves.length == 2 &&
prev_moves[0][1] != opposites[prev_moves[1][1]] ) {
move_1_delta_x = directions_delta[prev_moves[0][1]][0];
move_2_delta_x = directions_delta[prev_moves[1][1]][0];
move_1_delta_y = directions_delta[prev_moves[0][1]][1];
move_2_delta_y = directions_delta[prev_moves[1][1]][1];
// Calculating the coordinates of the diagonal object
diag_x = prev_x
+ move_1_delta_x
+ move_2_delta_x;
diag_y = prev_y
+ move_1_delta_y
+ move_2_delta_y;
// If the diagonal object is empty, that means we can access
// the adjacent 2 cells without the cell at (prev_x, prev_y).
// So let's put a block there!
if (map.getObjectTypeAt(diag_x, diag_y) == "empty") {
map.placeObject(prev_x, prev_y, "block");
}
};
```
# ToeFungi
Creating no other path
```javascript
if(me.canMove('up')){
me.move('up');
}else if(me.canMove('right')){
me.move('right');
}else if(!me.canMove('right') && !me.canMove('down')){
me.move('left');
map.placeObject(me.getX()+1, me.getY(), 'block');
} else {
me.move('down');
map.placeObject(me.getX(), me.getY()-1, 'block');
}
```
# DaPutzy
Making it easier for the path finding by adding `setPhoneCallback`. Press `q` and then walk to the right and up to get the key.
```javascript
if (!me.canMove('up') && !me.canMove('right')) {
me.move('down');
} else if (!me.canMove('down') && !me.canMove('right')) {
me.move('up');
} else if (!me.canMove('right')) {
me.move('down');
} else {
me.move('right');
}
}
});
player.setPhoneCallback(function () {
map.placeObject(13, 1, 'block');
map.placeObject(14, 2, 'block');
map.placeObject(15, 3, 'block');
map.placeObject(16, 4, 'block');
map.placeObject(31, 5, 'block');
map.placeObject(30, 6, 'block');
map.placeObject(29, 7, 'block');
map.placeObject(28, 8, 'block');
if (true) {
```
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