[Fantasy 4] the transformation from U3D to UE4

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Abstract ： This article mainly records my experience from Unity3D Engine to unreal 4 Experience on the transformation of engine , It will involve the comparison of similar concepts between the two fields , Learning direction and plan , And some development skills records .

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UI The difference on

	U3D	UE4
Main technology	UGUI	UMG
Using tools	Unity Editor ( namely Unity Editor )	Widget Blueprints ( Interface blueprint )
Editing process	In the scene, you can drag and drop to add various UI Components	Switch to... In the interface blueprint Designer View to edit UI
Loading mode	You can put the interface directly in the scene , You can also save the interface as Prefab Load as a resource	Trigger in code or blueprint CreateWidget() and AddToViewport() function
Runtime debugging mode	stay Scene The view can see the state of the whole interface in world space , Click a UI You can view its runtime data	adopt WidgetReflector( Control reflector ) Click a UI View its runtime data , Note that the data is not refreshed in real time , What is displayed is only the instantaneous data when clicking
Conflict resolution when merging resources	Whether it's Prefab still Scene, Can view the differences in the form of text , However, you cannot merge resources	uasset It's all binary files , Differences cannot be viewed as text , But the interior provides Merge Tool merge blueprint , Also have Source Control Tools lock blueprint resources

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Differences in programming languages

	U3D	UE4
Supported programming languages	C# / JavaScript	C++
Visual programming tools	Bolt plug-in unit	The blueprint

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Conceptual differences of similar terms

The official tutorial ： by Unity The Unreal Engine prepared by the developer 4 guide , Among them “ Glossary ” One section is very clear , I won't repeat

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Life cycle management

UE4: https://docs.unrealengine.com/5.0/zh-CN/unreal-engine-actor-lifecycle/

U3D: https://docs.unity.cn/cn/current/Manual/ExecutionOrder.html