Godot Animated Box Container Plugin C# Ver

This plugin will animate layout direction change in container.

Due to behavior differences related to UpdateMinimumSize in C# and update_minimum_size in GDScript, this plugin will not be make available in GDScript.

**Important Notes: ** Please compile and reload the project first after enabling this plugin or before exporting the projecrt. We use hacks to bypass an C# plugin initization error in Godot.

Please submit any issues you found. Contribution and suggestions are warmly welcomed.

Setting Recommendation

It is recommended not to use Fill size flag for both vertical and horizontal directions for children under Animated Box Container. Using it will have incorrect animation set for all children, causing unexpected behaviors.

Using Animated Box Container together with Animated Panel Container is recommended as we have a special variable in Animated Panel Container for Animated Box Container to know the final size of any Animated Panel Container children.

Demo

Changing Layout Direction Like a Normal Box Container

https://github.com/user-attachments/assets/5f52a7bf-047e-4cbf-b406-63d6782f0674

Changing Layout Direction but with Animation

https://github.com/user-attachments/assets/09a051e7-51b9-43ad-a26b-f022f9696270

Integrated with Animated Panel Container to Get Scaling Animation

https://github.com/user-attachments/assets/3dd38ba8-d583-4ee8-8019-02139b501268

Behavior Difference

It seems that Godot will call Container.update_minimum_size in GDScript for custom containers while the same behavior isn't observed in C#.
At the same time, GDScript doesn't allow us to overwrite non-virtual built-in function, which make it impossible to achieve the same animation.

Logically the same code, but behaves differently.

https://github.com/user-attachments/assets/7ff5f1d7-7f01-4964-9a56-c70320a2ad34

https://github.com/user-attachments/assets/fd88ebeb-8b83-4588-aada-8a396df1a3d5