As we mentioned before, Blueprints are assets that are saved in Content Browser that are used to create new types of Actors or script gameplay logic, events, and so on, giving both designers and programmers the ability to quickly iterate gameplay without writing a single line of code. In order for a Blueprint to have scripted behavior, we need to define how it behaves using various nodes in graph editor. Let's take a quick look at various graphs:
Construction Script Graph: Construction graph is executed the moment the Blueprint is initialized and whenever a change happens to any variables within the Blueprint. This means that whenever you place an instance of the Blueprint in the level and change its transformation or any variable, the construction graph is executed. This graph is executed once every time it is constructed and again when any of the properties or Blueprint is updated. This can be used to construct procedural elements or to set up values before the game...