Dreadnaught was started before UMG was a thing and people were integrating their own UI solutions, such as CEF3 based ones like CoherentUI and flash/action script based ones like Scaleform.
And since Scaleform uses Flash & ActionScript… 
Dreadnaught was started before UMG was a thing and people were integrating their own UI solutions, such as CEF3 based ones like CoherentUI and flash/action script based ones like Scaleform.
And since Scaleform uses Flash & ActionScript… 