With this patch you can use right-click to mark a square on the board.
You can add modifier keys to the click to change to alternate color
(with CTRL) or secondary color (with Shift). If you right-click and
drag from one square to another you will create an arrow. The
markings go away as soon as you left-click on the board or the board
state changes.
Note: The arrows sometimes look weird, and horizontal ones get cut
off. They also don't account for alpha. This is not a bug in
Chess code, rather, likely in the fill_path() function that's
used to draw the arrows. If anyone might know what's up with
that I urge you to take a look. :)
This patch allows the user to load games using PGN files. The parsing
is not complete and has a bunch of work left to be done, but it's
okay for our use case here. It can load all of the games our PGN
exporter can save. As the Chess program impoves so can the PGN parser.
This patch allows the user to go back and forward in move history
to replay moves from the game. This is view-only however, and as soon
as a move is made the board returns to it's current state. This will
work well for replaying games loaded in with PGN files, once that's
implemented.
You can now copy the board state as Forsyth-Edwards Notation. You can
then paste this into other chess programs/games, or into ours when
it gets implemented.
This patch adds an option to the menubar for exporting the current
game as a PGN file. This file can then be read by other chess
programs (and ours eventually) to replay the game or analyze it.
The implementation is mostly PGN spec compliant, however the code
could use some more work. Particularly the `const_cast`s...
But it's a start. :^)
Fixup: Chess: Fixed hard-coded home path in unveil() call
Fixup: Chess: Removed castling flags from Move struct
The castling detection logic is done inside Move::to_algebraic()
now, removing the need for is_castle_short and is_castle_long flags
inside of the Move struct.
As much as I like the "test" piece set, I think "stelar7" is a much
better first impression for anyone opening the Chess game, so I
consider it a much more sensible default.
