GameMaker How to find where/when a variable changes?

[FacesOfMu]

Hi all,
I've got an object that seems to change it's layer to -1 at some point and I can't find out where this happens. I've tried searching all uses of the word "layer" in my code to see what each line does, and nothing seems to indicate where the change is happening. I've even added a debug string to the object's step event and I can see when it changes, I just can't find where in my code this happens.

What can cause an object's layer to become -1, and is there any way of finding out what line of code changes it?

Cheers!

 

[Bayesian]

From the Docs

IMPORTANT! if you have created the instance using the instance_create_depth() function, or have manually changed the depth variable, the layer assigned to the instance becomes a "managed" layer, which is one that GameMaker Studio 2 controls and manages automatically. In these cases the layer variable will return -1.

 

[FacesOfMu]

Found the solution: the layer docs page says:

IMPORTANT! if you have created the instance using the instance_create_depth() function, or have manually changed the depth variable, the layer assigned to the instance becomes a "managed" layer, which is one that GameMaker Studio 2 controls and manages automatically. In these cases the layer variable will return -1.

I tracked down a line where the depth was set manually with a "depth =" and voila, all fixed.

 

[FacesOfMu]

Thanks, Bayesian! You replied before I refreshed my page