Savestate load undo

[iota97]

Create a savestate (shared between all game) before loading the selected one that can be used to undo the load.

About the UI, well I really dunno tbh... (Edit: remembered we had rewind button so placed it next to it)

[hrydgard]

Right, given that it's a global option, unlike the slot-specific undo-save, it doesn't really belong in the popups you get by clicking the image.

Maybe you can do a horizontal LinearLayout and put the buttons next to each other instead? Concerned about vertical space on small phone screens.

Undo latest save might also be convenient here.. Hm.

[iota97]

Using horizontal layout it use the same vertical space as before with rewind I guess, may still need to scroll on some small device tho'.

[hrydgard]

Definitely an improvement!

I'll actually review the code tomorrow, but it's a great feature to have.

Also I would like to redesign the screen a bit to make it harder to accidentally misclick load/save, but that's another story, and quite difficult without losing convenience. There'll still be value in this either way.