(Not to be confused with #715 which asks the write directory to be configurable.)

My game has two options when you open it: New Game, Continue.

For "Continue", all is well. Thanks!

For "New Game", I want an empty game loaded into memory, but when it's saved I want to overwrite save1.dat.

I have tried a few ways with Lua scripting and I don't think it's really possible. The filename of the save is contained in a Savegame userdata object (inseparable from the save values themselves) attached to the game object.

This doesn't work:

if new_game then
  game = sol.game.load("tmp_save")
  function game:save()
    game.filename = "save1.dat" -- not possible
    getmetatable(game).save(game)
  end
end

This could work, but is very tedious:

if new_game then
  game = sol.game.load("save1.dat")
  initial_game:reset_all_values(game) -- all possible save values are reset here
end

This does work, but it's brutal!

if new_game then:
  sol.game.delete("save1.dat")
  game = sol.game.load("save1.dat")
end

Anyone who accidentally clicks the "New Game" button will be very upset! The old file is immediately, irreversible destroyed. Maybe a warning ("are you SURE?") will improve it, but it's still not ideal. I'd rather warn the player right before the game would be overwritten.