7. Blueprint Reference | Asynchronous Loading

This is an Unreal Level Blueprint that demonstrates how to build a loading screen that can be used at the start of a game to load both FMOD Studio data and Unreal data without blocking the main thread. To make this work properly "Load All Banks" needs to be turned off in the FMOD Settings.

Level Blueprint

Topics:

Variables

Banks: List of banks to load
Load Sample Data: When enabled, the sample data from all FMOD bank files is loaded at startup. Only effective when Load All Banks is also disabled
Done: False, until all the banks have finished loading.
Number of Banks Loaded: Reference to how many banks have currently been loaded. Used as reference to check if loading has completed.
Map Name: The name of the map to be loaded when banks have completed loading.

Macros


Make Array: Using the Banks variable, define an array of banks to be loaded.
Load Banks: Initializes the loading process for the banks. Called once on Event Begin, uses the Load Sample Data variable for the Load Bank node.
Check Banks Load: Checks the Done variable every tick. If it is still false, it will iterate through the array of banks incrementing the variable Number of Loaded Banks. Once Number of Loaded Banks is equal to the total number of banks in the array then the variable Done is set to true, and it is safe to load the playable Map.