MDFastBinding

A versatile and performant alternative to property bindings for designer-friendly workflows. Intended for UMG widgets but usable in any blueprint. The goal was to build a tool that allows mutating raw data into a form that can drive visuals, all within the editor, while staying performant.

Requirements

MDFastBinding now only support Unreal 5.1 and later. See the UE-4.27-5.0 tag for older versions. Setting up MDFastBinding with this repo requires that you build your own code.

Setup

1. Clone this repo into your Plugins folder.

2. a) To add bindings to your class, you can extend from UMDFastBindingUserWidget

   b) or add an instance to your own class and call the binding functions at the appropriate locations:

In your header:

UPROPERTY(Instanced)
class UMDFastBindingContainer* Bindings = nullptr;

In your source file:

Bindings->InitializeBindings(this);
Bindings->UpdateBindings(this);
Bindings->TerminateBindings(this);

3. Launch the editor and create a blueprint that extends your class (or MDFastBindingWidget)
4. In the editor of your blueprint, you should see a "Binding Editor" button in the toolbar (may require closing and reopening your blueprint):

5. This will open a new tab with an empty graph and an empty list on the left side. Create a new binding by click the "Add Binding" button in the bottom left and name your new binding.

6. Now on the right side, you can right-click and start adding nodes to your new binding.
7. Checkout the examples in the /Content/Examples folder, here's a screenshot binding 2 health variables to a progress bar widget's percent:

Performance

Check out the Performance wiki page for details on how to make performant bindings.