play.RdFunction to start the chess trainer.
play(lang="en", sfpath="", ...)This is the main function to start the chess trainer. See the chesstrainer-package documentation for an introduction to the package.
The function does not return an object.
Most of the interactions with the chess trainer happen in the plotting window where the board is drawn and the pieces are moved. However, for some actions, one must switch to the R console. Unfortunately, there is no programmatic way in R to activate the console or the plotting window. Therefore, one must manually switch to the console or back to the plotting window, which is a bit tedious. However, your operating system may allow activating windows via the command line through various means. For example, under Linux with an X Window manager (not Wayland unfortunately), this should be possible with the wmctrl command. To make use of such functionality, one can pass two strings via arguments called switch1 and switch2 to the play() function that are evaluated whenever a switch to the R console or back to the plotting window should happen. For example, with:
play(switch1="system('wmctrl -x -a gnome-terminal'), switch2="system('wmctrl -x -a r_x11'))"
one may be able to achieve this automatic window switching. Of course, this requires wmctrl to be installed and the window names must match those used by the operating system. Under macOS, it should be possible to achieve the same thing using osascript. Under Windows, this may also be possible with powershell or AutoHotkey.
# start playing
if (FALSE) { # \dontrun{
play()
} # }