The State File is created while the game is running and can be found
in .minecraft/wpstateout.txt. The file contains a single line of text containing
information about the game's current state, and overwrites itself whenever the state
changes. The following states will appear as lines in the file:
waitinginworld,pausedinworld,unpausedinworld,gamescreenopentitlegenerating,[percent](before preview starts)previewing,[percent]- if using worldpreview