Optimal 2x2 Scrambles for CCT (for versions <=0.9.4)

[masterofthebass]

Thanks to Tim Sun (who basically translated Jaap's code), I was able to put together a cct scramble plugin for random state, optimal 2x2. Just put the .class file in the scramble plugins folder of your CCT directory.

 

[Anthony]

Thanks, I've been hoping someone would do this for a while now.

 

[Muesli]

I APPROVE OF THIS!

 

[puzzlemaster]

hm...how many moves should it be?

 

[masterofthebass]

hmm... Apparently version 0.9.5 already has this, but this plugin will work for earlier versions of CCT (I'm running 0.9.4).

 

[JustinJ]

Doesn't CCT 0.9.5 already have optimal 2x2 scrambles? This is good if you're using an older version though, I guess.

Edit: ninja'd

 

[Kian]

hm...how many moves should it be?

11 or less.

 

[luisgepeto]

Where can I get CCT 0.9.5? Because my CCT is 0.9.3 and that file doesn't seems to work...
EDIT: Found it, nevermind

 

[Swordsman Kirby]

hmm... Apparently version 0.9.5 already has this, but this plugin will work for earlier versions of CCT (I'm running 0.9.4).

Wasted my time, fool!

 

[linkmaster03]

who basically translated Jaap's code)

Does anyone have a link to this code? I can't seem to find it.

 

[Shortey]

Where can I get CCT 0.9.5? Because my CCT is 0.9.3 and that file doesn't seems to work...
EDIT: Found it, nevermind

On Lucas' website of course.

EDIT: 200th post. =)

 

[masterofthebass]

hmm... Apparently version 0.9.5 already has this, but this plugin will work for earlier versions of CCT (I'm running 0.9.4).

Wasted my time, fool!

I really didn't want it for cct. I already told you that.

who basically translated Jaap's code)

Does anyone have a link to this code? I can't seem to find it.

check the source of the official scrambler.

 

[linkmaster03]

who basically translated Jaap's code)

Does anyone have a link to this code? I can't seem to find it.

check the source of the official scrambler.

This scrambler? It doesn't seem to use optimal 2x2 scrambles, unless I am missing something.

 

[masterofthebass]

http://www.worldcubeassociation.org/regulations/scrambles/scramble_cube_222.html

that's the scrambler you get when you look in the regulations.

 

[linkmaster03]

Ah, didn't look there. Thanks!

 

[Swordsman Kirby]

http://www.jaapsch.net/puzzles/javascript/cube2j.htm

Nubs.

 

[Cride5]

http://www.worldcubeassociation.org/regulations/scrambles/scramble_cube_222.html

that's the scrambler you get when you look in the regulations.

Correct me if I'm wrong but technically that isn't a random-state scrambler.

The function which does the scramble is as follows:

function mix(){
    initbrd();
    for(var i=0;i<500;i++){
        var f=Math.floor(Math.random()*3+3) + 16*Math.floor(Math.random()*3);
        domove(f);
    }
}

...which basically applies 500 random moves to the cube. I know this because I made use of Jaap's solver for the 2x2 scrambler in cTimer, but I had to write supporting code to generate random cube states (code here). Of course, the statistical difference between a 500-move scramble and a random-state scramble will be negligible on a 2x2, but using 500 random moves just seems like an inefficient hack.

 

[Swordsman Kirby]

Correct me if I'm wrong but technically that isn't a random-state scrambler.

The function which does the scramble is as follows:

function mix(){
    initbrd();
    for(var i=0;i<500;i++){
        var f=Math.floor(Math.random()*3+3) + 16*Math.floor(Math.random()*3);
        domove(f);
    }
}

...which basically applies 500 random moves to the cube. I know this because I made use of Jaap's solver for the 2x2 scrambler in cTimer, but I had to write supporting code to generate random cube states (code here). Of course, the statistical difference between a 500-move scramble and a random-state scramble will be negligible on a 2x2, but using 500 random moves just seems like an inefficient hack.

It just means that the programmer doesn't really understand what random-state refers to. It's also very very easy to generate a random position; I don't understand why you guys are using such convoluted methods. >_>

 

[Cride5]

It just means that the programmer doesn't really understand what random-state refers to. It's also very very easy to generate a random position; I don't understand why you guys are using such convoluted methods. >_>

Hmm, is my randomCube() function a bit bloated?? I couldn't think of a more direct algorithm than that :confused:

 

[Swordsman Kirby]

It just means that the programmer doesn't really understand what random-state refers to. It's also very very easy to generate a random position; I don't understand why you guys are using such convoluted methods. >_>

Hmm, is my randomCube() function a bit bloated?? I couldn't think of a more direct algorithm than that :confused:

Given that Jaap's solver just uses two numbers for the position, you should just be randomly generating those two numbers. I don't know what Dan did to modify the code for CCT, but this is how I generated a random position in the original scrambler:

int p = (int)(Math.random()*5040), o = (int)(Math.random()*729);