[Released] Rewind Time Manager

Hello friends!

Yesterday, I finished work on a new tool for Unity3d. Here is it!

WEB DEMO​

Rewind Time Manager is a tool that allows you to manage the time in Play Mode. This tool will allow Unity3d developers to create a game in which you can rewind time back such as in games like Braid or Prince of Persia: The Sands of Time. The tool is simply records the data on changes in object properties and not used Time class (In particular Time.timeScale).

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Currently supports recording and playback in reverse:

• Transform of the objects (Position, Rotation and Scale)
• Force and direction of Rigidbodies
• Animations
• Sounds (At the moment only looped sound)
• Custom floating-point numbers

Comments are welcome.

 

Just spotted it in the asset store earlier. Looks perfect for my next game will definitely be purchasing this soon!

 

bug5532 Thx

I forgot to ask: What components or parameters in your opinion should be supported in addition to that specified?

 

Only on this week! 80% OFF!​

 

Haha, looks pretty awesome! Bookmarked!

EDIT: Would be nice if you add the PAUSE FUNCTION.
Also, is there anyway to speed up or slow down the rewind?

 

It seems you can only rewind up until the last point you rewinded. In Braid you can rewind everything no matter what if I remember correctly. Would that be possible here? And if not, why?

 

I am da bawss,Thx The pause function will be added in the future version.

TwiiK, Sure it possible! I'll try to realiize it in the future version.

 

Really? YOU GOT MY MONEY! INSTANT BUY!

Another thing, do you record ALL properties of object while simulation is running? I am thinking this could evolve into a recorder like function too (like Battlefield 2's Battle Recorder), and perhaps as a side function, a save game capability (since you are recording all properties).

 

For $2 it is a steal.

Played around a bit with it. Not sure I understand the accuracy setting at the moment, but maybe I will once I look at the code. Is it how often it records data? I didn't see a difference when I changed it.

A few comments in the code would be gravy, but for $2 I'm not going to make demands.

Literally took me 10 seconds to set up in a completely new scene. That's really cool.

The only thing I didn't like was the custom float approach. That seems really rigid. I'm sure I will need to be able to rewind a lot of custom things in my games like for instance lights switching on and off, custom effects, particles etc. I would like a more api based approach where you can feed your data to a method or something. Have you thought about expanding on that bit?

 

Couldn't pass this up for the price. I see a lot of uses and growth potential for it. Thanks!!

 

I am da bawss,

The performance will be lower If record all parameters. Only the basic parameters is recorded (position, rotation, scale, rigidbody velocity and animation points). But you can set necessary parameters into custom float array. And yes, the data can be used to create a save function. I will write about this in documentation.

TwiiK,

Accuracy is the value that determines interval between data record:

High – Record every 0.1 seconds
Medium – Record every 0.5 seconds
Low – Record every 1 second

As for custom settings, I'll try to come up with something.

 

I see. And then your interpolate between the recorded data to make it look smooth? That's why I couldn't tell at first, but I can clearly tell now.

 

Bought!
Question, can this be apply on per-object basis? or even per layer or per group basis? Eg. I only want certain entity to be affected by the rewind, NOT the whole game world. For example - like in the game "Singularity" where you can target enemy or object to be affected by your rewind effect. So let's say couple of barrels exploded, but I only want the remain of the barrel I am targeting to rewind back in time. Can this be done?

 

Bought! Thanks, looking forward to playing around with it.

 

It's already per object. You add the RewindUnit.cs script component to whatever you want to be able to rewind.

I would assume that to make it work per layer would be fairly straight forward by just writing a small script that adds this component to all objects in a layer at runtime.

 

Version 1.1 is now avaliable!

New features:

* Added freeze time function
* Added custom boolean array

 

That's great, although I'm already knee deep in messing up my copy of the code.

I bought a lecture by Jonathan Blow from GDC about the time rewind implementation in Braid. Trying to wrap my head about how to implement all those features and make it as robust as it is in Braid. Recording once every 0.1s isn't enough for me, currently trying to make it record every frame and work my way from there.

I have two questions:

Why is RewindData made visible in the inspector in this version?

Code (csharp):

1. //[System.NonSerialized]
2. public RewindTimeData[] RewData;

Why do you story rigidbody.velocity.magnitude, and twice?

Code (csharp):

1. for (int i = 0; i < RewData.Length - 1; i++)
2. {
3.     RewData[i].ThisPos = RewData[i + 1].ThisPos;
4.     RewData[i].ThisRot = RewData[i + 1].ThisRot;
5.     RewData[i].ThisScale = RewData[i + 1].ThisScale;
6.     RewData[i].ThisRigMagnitue = RewData[i + 1].ThisRigMagnitue; // Here
7.  
8.     RewData[i].JustInstantiated = RewData[i + 1].JustInstantiated;
9.     RewData[i + 1].JustInstantiated = false;
10.  
11. }
12. if (gameObject.GetComponent<Rigidbody>() != null)
13. {
14.     for (int i = 0; i < RewData.Length - 1; i++)
15.     {
16.         RewData[i].ThisRigVelocity = RewData[i + 1].ThisRigVelocity;
17.         RewData[i].ThisRigMagnitue = RewData[i + 1].ThisRigMagnitue; // And here
18.         RewData[i].ThisRigAngVelocity = RewData[i + 1].ThisRigAngVelocity;
19.     }
20. }

 

A little update:

v1.2
* Some fixes
* New functions: StartRecord(); StopRecord();

 

Hi,

i have already done my project with orbit camera,animation and many other things,can i use your package just drag and drop and some little change.

Dev

 

Hi,

Sure you can. All you need is to attach components to objects.

Please read the documentation for more details:

https://dl.dropboxusercontent.com/u/56229940/RTM Documentation.pdf

 

hi,

Thanks for reply.Buy very soon...

Dev

 

2 question please
one is way only loop sound ?
and second is possible to do replay with him

 

Hi,

At the moment only loop sound supported. I will implement recording sound events in the next ver.
For making replay use special tools from Asset Store.

 

Hi, love this tool, but I have 2 questions..
1)
I use StartRecord after level loads, then StartRewind and StartRecord when my game time is going backwards or forwards....
also tried just using StartRewind and StopRewind, but behavior seems the same, see below...

If I quickly rewind, play, then rewind again, I noticed that the initial rewind data is gone...
for example... record 5 seconds of gameplay. rewind 1 second (so buffer should now be 4 seconds long), then play for another second (rewind buffer should now be 5 seconds long again) rewind again, but its only 1 second long ???
It seems like the buffer is reset every time after a partial rewind ? Is this a setting, or is there a way to stop this behavior please ?

2) while player is re-winding, I hit the end of my rewind buffer... (5 seconds) but the rewinder freezes all objects at that time (while player holds rewind button)... but I want game to start forward play and start recording again once the rewind buffer is empty, is there feedback from the rewinder that lets me know player got to the end of the buffer please ?

thanks

 

sème for question 2 need know when rewinder is ending for restart recording automatique in code please helps

 

Hi guys, sorry for the late answer.

JonnyHilly,
1. Unfortunately yes, older recorder data is clearing after start rewinding. I know about this snag and will try to find a way to fix this
2. You can count the time after start rewinding and use StopRewind() when this time is come to RewindDuration and disallow player to start rewind again

kilik128,
Take a look at 159 code line in RewindManager.cs

 

Have you had any luck in fixing #1 ?

 

is there any update on fixing #1 please ?

 

Great one, i can think of many uses already

 

Voodoo, ok I solved issue #1 ... plus made a big speed up.

Here is the solution, hopefully this makes sense, and you can implement it also, and share with others who purchased.

1. in rewind unit, instead of shifting your entire array up each time... just use a ring buffer instead (much faster)... start at the beginning of your buffer, store a position, increment the store index (keep the index global in in rewind manager) if you get past the end of the array, loop the index back to element 0, so its constantly recording. (and all rewind units use the same index from rewindManager)

2. when you rewind, just rewind back from the current index (reverse direction of index decrement instead of inc). Then, when you stop rewinding, just continue storing from where the current index rewound to (go back to incrementing). "Never" reset the index, list or the rewindUnits data (except at the start of the level).

3. when you rewind.. just make sure you don't loop back any further than the max buffer size (rather than checking for index 0 as it does now)
For example.... say rewinding index say starts from index X, rewinds to 0, loops round to bufferSize-1 then continues rewinding back down to index 35 then must stop here as the full buffer has been rewound.

This works great, it solves #1, and is much faster. enjoy
Voodoo pm me if you want more info or source code changes. I'm still fiddling with some stuff.

 

Is there a way to replay the recording after it has been rewound ?

 

* Bump *

 

Hi V0odo0, great asset , i need help ,i search a way to play the rewdata (like a replay system) on an object which got recorded by your script ,how can i play rewData in the normal way on my object