Description

A HISMC (Hierarchical Instanced Static Mesh Component) created dynamically through blueprints has its simulation reset by the Wind Directional Source.

"The HISMC needs to get spawned from an Actor while the game runs! A HISMC which is created manually with "Add Component" does work, but if you create the HISMC with the "Add HISMC" Node at Event Begin Play (or at any other place while the game runs), this bug appears. So the "real component" works, while the component which is just a variable is buggy"

Steps to Reproduce

1. Download the project provided.
2. Open the project and press play.
3. Observe the trees wind sway animation resetting with each second set by the 'Set Timer' node.
4. Now replace the 'Add HISMC' Node at 'Event Begin Play' within the 'Trees' blueprint with an actual HISMC created using the 'Add Component' option within the blueprint.
5. Replace all the 'Trees' references with the HISMC.
6. Use the images for reference as to how your graphs should look for the test.
7. PIE and observe how the trees now grow correctly without being reset by the Wind Directional Source.

Have Comments or More Details?

Head over to the existing Questions & Answers thread and let us know what's up.

0
Login to Vote

Cannot Reproduce
ComponentUE - Gameplay - Components
Affects Versions4.7.6
CreatedMay 6, 2015
ResolvedAug 3, 2016
UpdatedJul 14, 2021