Message #1356

From: Melinda Green <>
Subject: Re: [MC4D] Re: Other 4D puzzles
Date: Wed, 26 Jan 2011 17:18:16 -0800


That is an ambitious goal and a very noble one. I agree completely that
the log file is the right place to start with any of this. It is the
"document" or "model" in object-oriented design and is therefore at the
core of this whole endeavor. I hope that you make sure to support all
the features of the MC4D implementation so that we’ll be prepared to
switch to your system someday.

One thing that I regret not bringing from v1 to v2 of the MC4D log
format is the state block. That is useful for passing around starting
configurations that do not contain the instructions for how it was
scrambled. I encourage you to make accordance for that and other sorts
of optional data blocks.


On 1/23/2011 11:49 AM, Andrey wrote:
> Matt,
> My plan after 5D simplex is some 4D puzzle. It may be 24cell, or hypercube with some different cutting (1C-centered and 4C-centered? don’t know). For the twists I’m going to use free rotation of layer: you select it (face by left-click, 2C/3C/4C if there are such centers - by right click) and then use free rotation in 3D around the fixed center. I also thought about additional stickers - but it’s equivalent to work with some truncated puzzle: additional faces will play the role of stickers for non-face-centered layers.
> But before there will be time to write description of log files for the wide class of 4D puzzles. I think that it must include:
> - symmetry of the body (set of possible rotation axes)
> - number of layers for each class of axes (e.g. hypercube, 3 layers in 1C direction, 2 layers in 4C direction)
> - sequence of twists in terms "direction of rotation center, direction of rotation axis, angle, layer mask"
> All the other things (actual shape of main body, coloring, depths of cuts) are not so important - they are about the puzzle description and if two programs will recognize, say, the same name in the similar way, they will give same interpretation of the rest of log file.
> Andrey
> ————————————
> Yahoo! Groups Links