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# TODO list
This is a list of things that I would like to add or change at some point.
It's more of a personal reminder than anything else.
## For version 2.1
### Moving coordinates
* Implement coord->move to apply moves directly on coordinates
* add transformer to transform coordinate (optional, only for sym coordinates)
* For each coordinate, manually disallow "bad" moves, or just ignore the error
(probably better to check: low performance cost, detect problems that I might
be overlooking)
* remove selsims, do this directly inside transfinder
* change genptable where needed
* Remove coord->cube (and edit README.md accordingly)
* Remove sym_data->rep (but keep transtorep)?
* Use this to improve solver: add 2 or 3 helper coordinates to optimal solver,
to avoid transforming every time. We still need to transform when checking
inverse scramble, though.
### Documentation
* Write an examples.md file
* More screenshots!
### More
* Anything quick and easy from the sections below
## Commands
### Commands that are available in nissy 1.0, but not in this version (yet):
* drcorners (solve corners after dr)
* search and improve non-optimal subsequences
* save and edit algs as "variables"
(or just use a "logging system" to keep info about previously run commands,
including e.g. solutions that were not shown because -c)
### More steps for `solve`
* QTM optimal solving
* Block-building steps (cross, roux blocks, ...)
* Other common steps (LSE, ...)
### Improvements to currently implemented commands
* solve should re-orient first if needed and not just give up if centers are off
* solve should try up to a small bound without loading the large pruning table
* silent batch mode without >>>
### New features
* configurability: add an `alias` command, run config file at startup
* configure max ram to be used (via config file and/or command line option)
* transform alg, rufify etc...
* command notation to list available moves
* make multi-step solve much more general and create command
* input directly cube status instead of moves
(graphical: maybe there is a cubing.js function; command line: ???)
## Distribution
* webapp (cgi)
## Technical stuff
### Testing
* write some proper tests, move test_coord to the testing module(s)
### Memory management
* free pruning table after solve is done? if I do this I need to deafault to a
small table for < 8 moves solutions or smth
* improve multi-threading when solving multiple scrambles
* nissy -M maxmem option for running with at most maxmem memory; if exceeded
when loading a pruning table, return failure (or make every solve command
use tiny tables instead?); if maxmem is very 600Mb or
less do not use invtables (the performance loss is minimal anyway). If the
limit is really tiny, do not use mtables or ttables (but this would be
very slow and probably nobody will ever use it)
* Check if memory is enough for loading pruning tables; if not, abort
* For optimal solver: choose largest that fits in memory between nxopt and light
### Structural changes
* client/server architecture: run a server process in the background so that
multiple client processess can send it queries and get results; this would
open up the door for a web-based version or graphical clients
### Cleanup
* sort again functions alphabetically in their files
* more stuff to load at start (or when suitable command is called) rather
than when called directly, to avoid nasty problems with threading
* parse command args: one function per arg type, then each command has
a list of options that it accepts (as a string)
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