LeanTween - A tweening engine that is up to 5x faster than competing engines!

NVM! I managed to find a very good solution, again thx to your API!

I've created a bool flag on the statemachine telling it that it's locked on current state, and refactored it so that state-changes happen on update, with kind of queue that saves the next state requested until the SM is unlocked and updates.

Then, on the state I was using for experimentation, I have used another bool flag to know when all objects have started tweening (it's a loop in a coroutine that spawns and starts tweening them) and .setOnStart() to register each of the (now) ongoing tweening objects on a list... Then, used .setOnComplete() and .setOnCompleteParam() to later retrieve references to the same objects, remove from list, check if all have already started tweening (using previous flag, that is set to true at end of the coroutine), and if list is empty... If both "all-started" flag and empty-list check are evaluated true, I know I'm done with the tweenings, and set the SM's lock to false (was set to true inside the state, just before starting the coroutine, btw), which allows the SM to move to next state (requested somewhere earlier)... I think it's a very elegant solution (considering I'm a game-dev noob), and once again it's all thx to you!

Your LeanTween is awesome! And by extension, you, it's creator, is even more awesome!

 

Hey Muspell,

There is no way to cache off an old version of the tween after it has completed. The engine itself recycles old tween objects, so there is no need to dispose of it. I would suggest putting the tweening code in one method, and then on clicking the button just recreating the tween each time. It's pretty efficient code, so it shouldn't be a lot of overhead. I hope that makes sense! Oh, and thanks I am glad you are liking the engine

 

@dentedpixel

So, I was triggering Tweens with a button press, anyway I tapped the button as fast as I could , and Unity crashed. Is it because I triggered too many Tweens, is there a limit to the number of Tweens I can have running?

 

There are a limited number of tweens but the default is set very high (and you can change that default with LeanTween.init() ), it also shouldn't crash when you reach that limit but just print out an error to the console.

You can use the LeanTween.isTweening method to check if you should fire off another tween or not on the button press. This should keep it from being overloaded...

 

Hi,

i've been using LeanTween to fade in/out my tooltips.
I'm using the following method to adjust the alpha of a CanvasGroup:

Code (CSharp):

1. void AdjustGroupAlpha(float value) {
2.     group.alpha = value;
3.     if (group.alpha == 0) {
4.         background.gameObject.SetActive(showTooltip);
5.     }
6. }

The reason for the SetActive call was to deactivate the tooltip just AFTER its alpha hits 0, and activate it just BEFORE its alpha gets changed from 0.
Here's how I use LeanTween:

Code (CSharp):

1. LeanTween.value(gameObject, AdjustGroupAlpha, group.alpha, 1f, tweenDuration).setDelay(delayFadeIn);

With version 2.4 the behaviour changed in that LeanTween no longer called the my method with a value of 0 when animating from 0 to 1. Therefore the if statement now is always false.
It's an easy fix on my end, but I wonder if that was intentional with all the changes you've made in the latest release.

 

Hi,
today I've updated from 2.33 to 2.40.
I am using LeanTween.moveY to move sprite game objects.
After the update, nothing is moved and there were no changes from my side.

This is what I am using:

Code (CSharp):

1.  
2. lt1 = LeanTween.moveY(gameObject, gameObject.transform.position.y - 15.0f, durationFall).setEase(LeanTweenType.easeInQuad).setDestroyOnComplete(false).setOnComplete(OnAnimationComplete);
3. lt2 = LeanTween.rotateAround(gameObject, axis, 360.0f, durationRotation).setRepeat(-1);
4.  

Any ideas?

Greetings
Pat

Update
I am using this in combination with LeanTween.rotateAround. If I delete rotateAround, the move is working. If I have both, only rotate around is working.

 

Why do you use GameObject in operations: move/rotate/..? if needs only Transform

 

Hi Pat,
I have not been able to reproduce this problem. I pushed an example scene into my github that tries to recreate your issue, but it is tweening the sprite just fine. Maybe there is something else to your example that was causing it to fail?

 

I just wanted it to always be consistent, so you don't have to really think about it from one tweening method to the next. I can see the argument for using specific object types though depending on the type of animation... but that was my thinking behind it.

 

Hi Legi,

Yeah I can see how that might have changed from the reworking. Sorry about that! I think you might want to change your code to adjust to how it works now, as in general I don't think it can be a guaranteed thing that you will get a 0f value, based on the tweening model.

 

Good to know! The problem I had was easy to fix. I'll keep that in mind when using LT in other cases

Thanks for the fast response, great Asset!

 

Here is a stripped example project which reproduces the issue:
https://1drv.ms/u/s!AnaggnXTpDAJlfxwTXi6u65K8GdiEQ

If "LeanTween.rotateAround" is commented out, the moveY tween works.

What is the exact link to your github example? I can't find this in the existing content.

Greetings
Pat

 

Hi Pat,
I was able to reproduce your problem once I added in the rotateAround piece in. Thanks for letting me know! I realized something I added in to simplify things introduced this bug. I have fixed it in the latest on github, the link is here: https://github.com/dentedpixel/LeanTween (my test scene is in LeanTween/Testing/Testing240.scene )

 

Hi,
thx for the fast response - now it works again.
I am glad to help as this asset is for free and bug reporting is the least I can do!

Greetings
Pat

 

Hi it `s a great tool on the vids but i just downloaded lean tween from Asset store and there is no "other" field in the create pannel nor anywhere else no sign of lean tween thing, exept Help popout:/
There are two tuts on your channel i couldnt follow for that reason . Are the vids outdated?
If so where i can find new upo to date tutorial vids?
Thanks.

 

Leantween.value, using a vector2, is no longer working.

Hey Russell,
been using Leantween for years. Love it, but:
Just tried to upgrade from version 2.3.2 and my vector2's aren't changing.
My code is:
LeanTween.value(I.Mask, maskOrgSize, maskOrgSize * 2.22f, 1).setOnUpdate((Vector2 val)=>{ maskRT.sizeDelta = val ; }) ;
the val's are all 0,0
Reverting to 2.3.2 fixed the problem without any coding changes

 

Hi Musolo,
Unfortunately those videos are referring to the LeanTween Editor https://www.assetstore.unity3d.com/en/#!/content/9455, which is a paid asset (but it's what helps fund my further LeanTween development so consider giving it a purchase). I am glad you are liking the free asset though

 

Hi Jon,
Thanks for the heads up! I feel pretty bad for missing this pretty bad bug :-/ (I wrote a unit test for it so it shouldn't break in the future). Someone else actually mentioned this as well, and I have had the fix up on github for a couple of days: https://github.com/dentedpixel/LeanTween . I hope to submit a fixed version to the Asset Store tomorrow, so everyone will get the fix.

 

No idea if this has been mentioned already, but with LeanTween Editor "control2" controls "node1" and "control1" controls "node2" and so on with as many nodes as I add. It's still usable, just confusing. I'd love to see "control1" control "node1", etc...

 

I have a camera path that works great going from point A to point B, like this:
LeanTween.move(player.gameObject,path1.vec3,2f).setOrientToPath(true);

But I then want to call another method that backs it out from point B back to point A, but this doesn't keep the camera oriented to the path (even though it's told to):
LeanTween.move(player.gameObject,path1.vec3,2f).setOrientToPath(true).setDirection(-1);

...and while this stays oriented to the path, it turns the camera around to face where it's going (I want it to back out, not turn around and go forward)
LeanTween.move(player.gameObject,path1.vec3,2f).setDirection(-1).setOrientToPath(true);

Any suggestions?

 

Hello Russell,

Your LT library is awesome. I use it for all my personal projects as well as professional ones. However i miss an important feature that can be found in another tweening system: moving a gameobject by moving the rigidbody instead of its transform. It would greatly help to move dynamic physics entities on low frame rate computers. That would be nice if you can add a Leantween.MoveRigidBody and LeanTween.RotateRigidBody, it would make Lean Tween the perfect lib in any situations. Thanks and keep up the good work!

 

Hi Tuitive,
Unfortunately the best solution at the moment is to embed the transform you are moving in parent transform. Then move the parent transform (with LeanTween.move( vector[] ) and orient the child transform in the opposite direction. I have been meaning to find a LeanTween api solution, but as it stands that is the best way to do it.

 

Thanks Kanda!
I have heard people have had good luck hooking together a transform that they move with LeanTween with another that has a rigidbody attached by using a joint. I haven't had a chance to test it it out myself yet, but yeah I would like to get better rigid body support, or maybe provide some examples of how to joint bodies together with a tween...

 

Great package! Would really like direct support for TextMeshPro but because LT is compiled in the Plugins folder, I can't reference up to other namespaces. Any thoughts on a clean way for me to add support? Any reason I can't move LT out of Plugins?

Also, I saw a mention of "custom properties" in a thread somewhere. Does this exist? If so, I assume the Editor does not support it?

Thanks much... nice job on this.

 

Thanks Russell. Looking forward to such a support. The advantage of Rigidbody.MovePosition is that it could be updated several times during a frame in FixedUpdate to avoid missing collision between thin colliders at low frame rates. As far as i remember iTween is supporting this automaticall if it detects a rigidbody on a gameobject that you requested to move. In my opinion it should'nt be automatically done, simply make a special LeanTween.MoveByPhysics function that will be updated in FixedUpdate (and same for Rigidbody.moveRotation) and tit will be perfect

Anyway, thanks again your awesome plugin.

 

Thanks Matthew!
I put it into the Plugins folder so that you can access it with either UnityScript or C# in the same way. But I am not really sure how many people still use UnityScript, but I think it's still a sizable amount for it to matter.

I am not sure what you mean about custom properties, you can tween just about any value with LeanTween.value maybe that's what you meant? Let me know how I could help in the integration.

I hope that helps, I have heard good things about TextMeshPro!

 

@dentedpixel It seems 2.4.0 broke using LeanTween.value with .setOnUpdate(Vector3 value), in my tests value keeps Vector3.zero.

Example:

Code (CSharp):

1. LeanTween.value(this.gameObject, Vector3.one, Vector3.left, 1f).setOnUpdate((Vector3 value) => {
2.             Debug.Log(value);  
3.         });

 

Hi.
I got error after update latest version.

MissingReferenceException: The object of type 'GameObject' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
csSplash.Destination () (at Assets/Scripts/csSplash.cs:175)[My Method]
LTDescr.callOnCompletes () (at Assets/Plugins/LeanTween/LTDescr.cs:918)
LeanTween.update () (at Assets/Plugins/LeanTween/LeanTween.cs:389)
LeanTween.Update () (at Assets/Plugins/LeanTween/LeanTween.cs:328)

This occur when scene is changed.

 

setOnComplete method is called after scene is loaded.
Can you fix it?

 

Yup :-( I have it fixed on github, and I pushed a fix to the Asset Store over a week ago, but they are being really slow with their turnaround time.

 

Hi Viame,
This issue is fixed on github as well, I am still waiting for the update to go through on the Asset Store

 

Ah, gotchya. Well, my challenge is to add support for TextMeshPro to the LeanTween Editor so my artists can easily animate UI elements. But since I'd need to have LeanTween become aware of TextMeshPro, I'm not sure this is going to be easy without moving LT out of the Plugins folder - unless you know a clever way around this.

And yes, TextMeshPro is a really nice package. I'd venture to say that most pro-level Unity projects use it (assuming they have discovered it!) Very clever shader technique that works well even on older/slower devices. You should check it out.

 

In file Assets/LeanTweenEditor/LTVisualShared.cs need add
#if UNITY_EDITOR
Undo....
#endif
for all Undo-s because you have an errors(such as:
Assets/LeanTweenEditor/LTVisualShared.cs(328,33): error CS0103: The name `Undo' does not exist in the current context
) when building on Andoid platfom

 

is there a way to attach a tween path to a game object ? what I'm trying to do it make a sword go into a sheath.

 

Code (CSharp):

1. var from = new Vector2(0, 0);
2.             var to = new Vector2(256, 96);
3.             LeanTween.value(gameObject, from, to, 0.1f).setOnUpdate((Vector2 value) =>
4.             {
5.                 Debug.Log("value=" + value);
6.             }).setEase(LeanTweenType.easeInOutQuart);

It doen't work : value = 0,0
If simple float:

Code (CSharp):

1. LeanTween.value(gameObject, x, 256, 0.1f).setOnUpdate((float value)

- all Ok

 

Hi YuliYf,

Are you sure you have the latest in the asset store? There was a problem with Vector3 and Vector2 callbacks, but I fixed it in the latest version. The sample you gave is working fine in the version I am using (also on github).

 

Thank you! I implemented the conditional compiler fix and will push that update soon.

 

Thanks, I updated a LearnTweenEditor to 0.941 and it's worked, all fine

 

Anybody has experienced this problem?

Code (CSharp):

1.  
2. foreach (int morphIndex in morphArray) {
3.     LeanTween.value(gameObject, 0.0f, 10.0f, 0.3f).setOnUpdate((float value) => {                        
4.         this.meshRenderer.SetBlendShapeWeight(morphIndex, value);
5.     })
6. }
7.  

Im doing a tween for each of my blendshapes, the problem is that it is not copying the block variables, instead they are passed by reference and it results in all the tweens tweening whatever reference is in morphIndex which in this case is the last element of the array.

So cant we create Tweens with a for loop?

I appreciate any help

 

Error in code, set: LeanTween.value(gameObject, morphIndex, 10.0f, 0.3f)

 

Hi Dented pixel,

Im really enjoying using leantween so far and have just purchased the leantween editor.
However I have come across an issue using the movelocal (Bezier) tween type in the Visual Editor.

I have the object I want to move and the lean tween path as children of a parent game object. If the parent game object position is set to 0, 0, 0 everything works correctly. However if i move the position of the parent game object, the object i want to move does not stick to the path, it is offset too far in the direction the parent was moved.

If that doesn't make sense i will send screenshots.

thanks very much!

harry

 

Hi Harry,
That does make sense, that actually sounds like expected behavior for moveLocal, if you want it to track where it is in the world position you want to just use the move method... It can get a little confusing though, knowing when to use one versus the other.

Glad you are liking it so far

 

Ah ok, my only issue with the move method is if i were then animating the parent, the regular move bezier wouldn't update this each frame right??

 

Hi its me again

I'm having another issue now on building the project to iOS

its giving me compiler errors

Assets/LeanTween/LeanTweenDocumentationEditor.cs(3,7): error CS0246: The type or namespace name `UnityEditor' could not be found. Are you missing a using directive or an assembly reference?


Assets/LeanTweenEditor/LTVisualShared.cs(356,33): error CS0103: The name `Undo' does not exist in the current context

Assets/LeanTweenEditor/Editor/LeanTweenPathEditor.cs(261,40): error CS0117: `DentedPixel.LTEditor.LTVisualShared' does not contain a definition for `change'

any idea what these are about? I also tried adding the leantween editor to a new project stripped down to basics and still get the errors.

Sorry i'm not a coder more of a playmaker user

Do you need me to send the scene or code?

thanks very much again for your help

harry

 

Hey, is there still an update pending for the AssetStore? Just got version 2.41 and it's broken a number of LeanTween.move() calls when passed a Vector3, it just moves to 0,0,0 for me.

 

Hi Harry,

Sorry I have to push an update for that, you have to wrap the code in that class with this compiler directive: #if UNITY_EDITOR

I am attaching the updated file here.

 

Hey Benzino07,
I wasn't aware of any new bugs like this. Are there any other details to the bug? I am able to get LeanTween.move to go to the correct place. I will keep testing though.

 

Hey, I just tested it more and it's setOnUpdate which is the problem, the Vector3 inside it is always (0,0,0). Try out the below code and it should show the issue.

Code (CSharp):

1. LeanTween.move(someObj, new Vector3(20, 20, 0), 5.0f)
2.             .setEase(LeanTweenType.easeInOutQuad).setOnUpdate( (Vector3 newPosition) =>
3.             {
4.                 Debug.LogWarning("New Position: " + newPosition.ToString());
5.             });

Pretty sure it's the same issue mentioned above but this is with the latest asset store version.

 

Thanks for bringing this to my attention Benzino07 ! It was a similar issue to the one above but required a different fix. I have the fix on the latest github: github.com/dentedpixel/LeanTween . I will be submitted an updated version to the store soon, but for the time being you can get it there.

 

Why error in code? What you posted here is incorrect. That would tween the morphIndex which is not correct, instead what Im doing is tweening the value of an specific morph.

Im posting my question again to see if I get any help.