Instance Library is a runtime Blueprint toolkit for UInstancedStaticMeshComponent (Hierarchical ISM accepted as ISM).

Stop writing fragile ForLoops for every bulk change. Add, remove, move, and tint thousands of instances with one node, find instances by radius / box / nearest / transform, and decide when the mesh refreshes on the GPU.

Features

• Batch add / remove / set transforms

• Spatial queries: nearest, farthest, K-nearest, in/out radius, box, count, any, find by location or transform

• Spatial remove: nearest, farthest, radius, box

• Batch & deferred custom data (float, values, float4) + single-slot read

• Deferred CPU lifecycle without mid-batch MarkRenderStateDirty

• ISM Flush Render State - one GPU refresh (HISM cluster rebuild included)

• Mark Render State Dirty pin on batch mutators - mutate many times, refresh once

• Index helpers: sort by distance, filter valid indices

• Safe fail on null / bad index; no crash

Not included: editor mode, foliage tool, mesh content pack, replacement for engine single-instance nodes.

Documentation