PCG

Blueprint AI authors Procedural Content Generation graphs the way it authors Blueprints: add nodes, wire pins, expose parameters, set deep node-settings properties, and auto-layout the result — plus graph instances and the standalone PCG assets.

Note

Conditional on the PCG plugin. Ask the AI to “check if PCG is available” to confirm the build state.

Graphs & nodes

Create a PCG graph called PCG_Scatter in /Game/PCG Search PCG nodes for “surface sampler” and add one, then add a Static Mesh Spawner node Connect the Surface Sampler output to the Static Mesh Spawner input Set the spawner’s mesh entry to SM_Rock via MeshSelectorParameters.MeshEntries[0].Descriptor.StaticMesh Lay out the PCG_Scatter graph

Parameters

Add a float graph input Density to PCG_Scatter and set its default to 0.5 List the graph inputs on PCG_Scatter

Instances & standalone assets

Create a PCG graph instance called PCG_Scatter_Dense from PCG_Scatter Override its Density parameter to 0.9 Create a PCG Compute Source called PCG_CS_Noise and set its HLSL source

Tip

Node-settings properties accept a dotted/indexed path that descends through nested structs and arrays to any depth — grow an array first with the array-append op, then address the new element. Describe a graph to see every node’s pins, edges, and editor position.