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pcg

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Create, inspect, and edit PCG Graph assets — add nodes, configure settings, connect pins, and wire procedural generation graphs (native PCG Python API). Use when the user asks to build a PCG graph, add PCG nodes (Surface Sampler, Static Mesh Spawner, filters), wire PCG pins, place a PCGVolume and generate, or set up procedural scattering.

Content/Skills/pcg/SKILL.md

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Local scripts
Last checked
Nov 10, 2026

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Nov 10, 2026
License
MIT

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# PCG Skill

PCG (Procedural Content Generation) in UE 5.7 is production-ready and fully scriptable via
the `PCGPythonInterop` plugin. No VibeUE service wrapper is needed — the Python API is complete.

## ⚠<U+FE0F> Read this before writing any code

These are the mistakes that cause infinite retry loops. Check each one before executing:

**Do not call `discover_python_class` or `discover_python_function` on any PCG class — this skill contains everything you need. Calling discover bloats context and causes content filter failures.**


1. **Volume Sampler input pin is `"Volume"`, not `"In"`** — `add_edge(input_node, 'In', sampler_node, 'Volume')`. Using `'In'` silently no-ops and produces 0 points.
2. **`voxel_size` is a `Vector`, not a float** — `set_editor_property('voxel_size', unreal.Vector(200, 200, 200))`. Passing a float raises a TypeError.
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