Verse API reference page for the OnBegin function | Unreal Editor for Fortnite Documentation

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Override to add custom logic when the game experience begins.


Verse `using` statement	`using { /Fortnite.com/Devices }`

OnBegin<native_callable><public>()<suspends><diverges><reads><writes><allocates><dictates><no_rollback>:void

Parameters

OnBegin does not take any parameters.

Attributes and Effects

The following attributes and effects determine how OnBegin behaves and how you can use it in your programs. For the complete list of attribute and effect specifiers, see the Specifiers Page.

Attribute	Meaning
`native_callable`	Indicates that an instance method is both native (implemented in C++) and may be called by other C++ code. You can see this specifier used on an instance method. This specifier doesn’t propagate to subclasses and so you don’t need to add it to a definition when overriding a method that has this specifier.
`public`	The identifier is universally accessible. You can use this on modules, classes, interfaces, structs, enums, methods, and data.

Effect	Meaning
`suspends`	Indicates that the function is async. Creates an async context for the body of the function.
`diverges`	Indicates that calls to the function may not complete.
`reads`	This effect indicates that the same inputs to the function may not always produce the same output. The behavior depends on factors external to the specified inputs, such as memory or the containing package version.
`writes`	This effect indicates that the function may change values in memory.
`allocates`	This effect indicates that the function may instantiate an object in memory. Allocating `<unique>` classes requires the `<allocates>` specifier.
`dictates`
`no_rollback`	This is the default effect when no exclusive effect is specified. The `no_rollback` effect indicates that any actions performed by the function cannot be undone and so the function cannot be used in a failure context. This effect cannot be manually specified.