Reverse Time feature?

[mellojoe]

Is there a way to reverse time? for silly time warp errors where you go too far, and you wish you had a WHOOPS button to reverse a few moments...

[Fel]

F9 works for me

[OrbitusII]

Unity doesn't support time machines... As far as I know. o.O You can accelerate time forward (obviously...) but not backwards. I can look into having a negative timeStep but I doubt it will work. Theoretically you can go backwards in time, but actually retrieving data that was trashed by time moving forwards will be very impractical if not impossible. It's much easier to create new data based on data you currently have, but extrapolating data backwards can only go so far before it doesn't accurately reflect the data that existed at a certain point in the past.

The solution to your problem should be quicksaving after each node is performed, that way you have a backup for accidentally going too far.

[mellojoe]

I guess just F5 and F9 for the quicksaves.

Is there a way to copy Save files, in order to make true save states? This way if in the process of doing a mission it becomes un-survivable, or stranded, I can always revert to a different save-point in the past. Or is that too far from realism for KSP? I love the realism, but I SUCK at planning. So too often I find I make it most of the way to where I'm going and run out of fuel, or I forgot the electronics, or batteries, or struts, or docking ports, or the wrong sized docking ports.... you get the idea. Most of my planning stage is just "Here, I want to try this and see what happens." But I don't want to destroy all my hardwork (ie: my space station or existing missions) by moving them to a different orbit only to strand it completely.

This way, if I have to use QuickSave for the small errors, I still have a good save-state for big errors.

[Shrike42]

There's two ways to do this, effectively.

1. Saving all flight data for each step of the physics engine for some amount of time. This would massively bloat memory usage.

2. Maintain detailed state information of all components such that the parts that exploded can be created and attached and figured into the previous physics steps. This is tricky, but far less bloaty, and would be a huge amount of effort to do properly.

As said, f5, f9.

[foundtracker]

If you have better time warp installed you can make a new  warp set with negative values to have time go backward. This won't fix any mistakes. say having Jebidiah explode, but if you need a transfer window in the past this will help. Or if don't like 2968 as your year marker....