Cannot read property '_getEffectiveTarget' of undefined in action.then

Bugs
1

https://www.babylonjs-playground.com/#1T30HR#1

Trying to chain actions using .then(InterpolateValueAction) causes a “Cannot read property ‘_getEffectiveTarget’ of undefined” error.

2

Here is a working example https://www.babylonjs-playground.com/#1T30HR#4

Still looking into .then on actions but for now you can use it from the actionmanager.

3

The action needs to be registered before chaining

4

Thanks. I see the subtle difference.

I was doing:
registerAction(action1.then(action2));

You are doing:
registerAction(action1).then(action2);

So, it works, but in an unexpected way. I thought that the .then meant it was a sequence of actions. I expect the sphere to scale and then slowly scale back. In your example, it scales on a pick and scales back when you pick again.

What’s the proper way to create a sequence so that they happen in order on the first trigger?

5

Did you figure it out? I have same use case. I want to chain 2 InterpolateValueActions (although i need non existent WaitAction too ;). Here is my version of your PG. It just executes the action without trigger after some delay.

6

AS there is no trigger you cannot chain then but instead you can call them like this:
https://www.babylonjs-playground.com/#1T30HR#6

7

I want to avoid managing timers myself. Maybe i should use Animations? My use case is: after some event interpolate material diffuse color from blue to red, then wait some time and interpolate back to original color.

8

Ok understood! Then animation + onAnimationEnd callback is the way to go :wink: