ue5-pcg-building

Name: ue5-pcg-building
Author: teixasalone

16stars3forks

How to install ue5-pcg-building?

teixasalone/unrealengine5-skills/ue5-pcg-building

$npx -y skills add teixasalone/UnrealEngine5-Skills --skill ue5-pcg-building

Installs into the current project.

Summary

UE5.6/UE5.7 PCG building generation workflow for modular buildings, blockouts, facade rules, and runtime generation. Use when requests involve Procedural Content Generation (PCG), Shape Grammar, lot-based building spawn, deterministic random seeds, density/filter pipelines, or co

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SKILL.md

1	# Quick Start
2	- Define generation target: blockout towers, modular facades, or lot-based building sets.
3	- Define deterministic inputs: lot splines/points, district tags, style preset, and seed.
4	- Define runtime mode: static bake, on-demand, or runtime scheduled generation.
5	- Define output mode: Static Mesh instances first, Spawn Actor only for interactive/stateful parts.
6
7	# UE5.7 API Anchors
8	- Runtime trigger and radii live on `UPCGComponent`:
9	- `EPCGComponentGenerationTrigger::GenerateAtRuntime`
10	- `bOverrideGenerationRadii`, `GenerationRadii`, `SchedulingPolicyClass`, `SchedulingPolicy`
11	- `GenerateLocal(...)`, `Cleanup(...)`
12	- Runtime scheduler refresh lives on `UPCGSubsystem`:
13	- `RefreshRuntimeGenComponent(...)`
14	- `RefreshAllRuntimeGenComponents(...)`
15	- `CleanupLocalComponentsImmediate(...)`
16	- Output selection anchor classes:
17	- `UPCGStaticMeshSpawnerSettings` for high-count rendering
18	- `UPCGSpawnActorSettings` for interactive/stateful outputs
19	- Shape Grammar anchor classes:
20	- `UPCGSubdivisionBaseSettings::GrammarSelection`
21	- Do not rely on deprecated grammar fields (`bGrammarAsAttribute_DEPRECATED`, `Grammar_DEPRECATED`)
22
23	# Graph Stage Contract
24	- Every stage must explicitly declare:
25	- Input data type (`EPCGDataType` or asset source)
26	- Core node/classes (minimum two)
27	- Required parameters (seed, tags, ranges, radii, or style keys)
28	- Output data type
29	- Debug method (node-level checks, debug node, or log/assert path)
30	- If a stage cannot satisfy these five items, treat the graph design as incomplete.
31
32	# Workflow
33	## 1) Input
34	- Input data type: actor/spline/point sources.
35	- Core node/classes: `UPCGDataFromActorSettings`, `UPCGGetActorPropertySettings`, `UPCGCreatePointsSettings`.
36	- Required parameters: lot tag filters, district/style tags, seed source, source bounds.
37	- Output: normalized lot point or spline data with stable ordering.
38	- Debug method: run `UPCGDebugSettings` after input stage and verify point count and bounds.
39
40	## 2) Filter
41	- Input data type: point/spline data from Input stage.
42	- Core node/classes: `UPCGAttributeFilteringSettings`, `UPCGDensityFilterSettings`, `UPCGFilterByTagSettings`.
43	- Required parameters: slope range, exclusion tags, min lot area/width, occupancy constraints.
44	- Output: only buildable lots/candidates.
45	- Debug method: compare candidate count before/after filter and inspect rejected tag distribution.
46
47	## 3) Transform
48	- Input data type: filtered buildable candidates.
49	- Core node/classes: `UPCGCopyPointsSettings`, `UPCGCreateSplineSettings`, `UPCGApplyScaleToBoundsSettings`.
50	- Required parameters: floor height, pivot convention, facade orientation basis, local axes.
51	- Output: footprint transforms and per-floor transforms.
52	- Debug method: inspect transform axes and floor index attributes on output points.
53
54	## 4) Grammar
55	- Input data type: segment/spline/point data from Transform stage.
56	- Core node/classes: `UPCGSubdivideSplineSettings`, `UPCGSubdivideSegmentSettings`, `UPCGSelectGrammarSettings`.
57	- Required parameters: `GrammarSelection`, module size limits, style-based grammar key mapping.
58	- Output: grammar-resolved module placements/attributes.
59	- Debug method: use `UPCGPrintGrammarSettings` for grammar parse and token validation.
60	- Rule: use `GrammarSelection` only; avoid deprecated grammar fields.
61
62	## 5) Output
63	- Input data type: grammar-resolved placements.
64	- Core node/classes: `UPCGStaticMeshSpawnerSettings`, `UPCGSpawnActorSettings`, `UPCGCreateTargetActor`.
65	- Required parameters:
66	- Static path: mesh selector, instance packer, ISM/HISM policy.
67	- Actor path: actor class, spawn attributes, state/interaction requirements.
68	- Output: rendered buildings and optional interactive building elements.
69	- Debug method: split output by layer/tag and validate per-layer counts.
70	- Default policy: prefer Static Mesh Spawner; use Spawn Actor only when stateful behavior is required.
71
72	## 6) Validate
73	- Input data type: final spawned result and runtime generation state.
74	- Core node/classes: `UPCGDebugSettings`, `UPCGComponent`, `UPCGSubsystem`.
75	- Required parameters: expected cell bounds, max per-update spawn budget, nav/collision expectations.
76	- Output: pass/fail signals and fix actions.
77	- Debug method: run staged checks for overlap, navigation impact, per-cell generation time, and deterministic replay.
78
79	# Constraints
80	- Keep the main pipeline compatible with both UE5.6 and UE5.7 unless a version-specific note is required.
81	- Runtime generation must explicitly set:
82	- `GenerationTrigger = GenerateAtRuntime`
83	- explicit `GenerationRadii` (do not rely on implicit defaults)
84	- explicit `Sched

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ue5-pcg-building

16stars3forks

View on GitHub

How to install ue5-pcg-building?

teixasalone/unrealengine5-skills/ue5-pcg-building

$npx -y skills add teixasalone/UnrealEngine5-Skills --skill ue5-pcg-building

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Quick Start
2	- Define generation target: blockout towers, modular facades, or lot-based building sets.
3	- Define deterministic inputs: lot splines/points, district tags, style preset, and seed.
4	- Define runtime mode: static bake, on-demand, or runtime scheduled generation.
5	- Define output mode: Static Mesh instances first, Spawn Actor only for interactive/stateful parts.
6
7	# UE5.7 API Anchors
8	- Runtime trigger and radii live on `UPCGComponent`:
9	- `EPCGComponentGenerationTrigger::GenerateAtRuntime`
10	- `bOverrideGenerationRadii`, `GenerationRadii`, `SchedulingPolicyClass`, `SchedulingPolicy`
11	- `GenerateLocal(...)`, `Cleanup(...)`
12	- Runtime scheduler refresh lives on `UPCGSubsystem`:
13	- `RefreshRuntimeGenComponent(...)`
14	- `RefreshAllRuntimeGenComponents(...)`
15	- `CleanupLocalComponentsImmediate(...)`
16	- Output selection anchor classes:
17	- `UPCGStaticMeshSpawnerSettings` for high-count rendering
18	- `UPCGSpawnActorSettings` for interactive/stateful outputs
19	- Shape Grammar anchor classes:
20	- `UPCGSubdivisionBaseSettings::GrammarSelection`
21	- Do not rely on deprecated grammar fields (`bGrammarAsAttribute_DEPRECATED`, `Grammar_DEPRECATED`)
22
23	# Graph Stage Contract
24	- Every stage must explicitly declare:
25	- Input data type (`EPCGDataType` or asset source)
26	- Core node/classes (minimum two)
27	- Required parameters (seed, tags, ranges, radii, or style keys)
28	- Output data type
29	- Debug method (node-level checks, debug node, or log/assert path)
30	- If a stage cannot satisfy these five items, treat the graph design as incomplete.
31
32	# Workflow
33	## 1) Input
34	- Input data type: actor/spline/point sources.
35	- Core node/classes: `UPCGDataFromActorSettings`, `UPCGGetActorPropertySettings`, `UPCGCreatePointsSettings`.
36	- Required parameters: lot tag filters, district/style tags, seed source, source bounds.
37	- Output: normalized lot point or spline data with stable ordering.
38	- Debug method: run `UPCGDebugSettings` after input stage and verify point count and bounds.
39
40	## 2) Filter
41	- Input data type: point/spline data from Input stage.
42	- Core node/classes: `UPCGAttributeFilteringSettings`, `UPCGDensityFilterSettings`, `UPCGFilterByTagSettings`.
43	- Required parameters: slope range, exclusion tags, min lot area/width, occupancy constraints.
44	- Output: only buildable lots/candidates.
45	- Debug method: compare candidate count before/after filter and inspect rejected tag distribution.
46
47	## 3) Transform
48	- Input data type: filtered buildable candidates.
49	- Core node/classes: `UPCGCopyPointsSettings`, `UPCGCreateSplineSettings`, `UPCGApplyScaleToBoundsSettings`.
50	- Required parameters: floor height, pivot convention, facade orientation basis, local axes.
51	- Output: footprint transforms and per-floor transforms.
52	- Debug method: inspect transform axes and floor index attributes on output points.
53
54	## 4) Grammar
55	- Input data type: segment/spline/point data from Transform stage.
56	- Core node/classes: `UPCGSubdivideSplineSettings`, `UPCGSubdivideSegmentSettings`, `UPCGSelectGrammarSettings`.
57	- Required parameters: `GrammarSelection`, module size limits, style-based grammar key mapping.
58	- Output: grammar-resolved module placements/attributes.
59	- Debug method: use `UPCGPrintGrammarSettings` for grammar parse and token validation.
60	- Rule: use `GrammarSelection` only; avoid deprecated grammar fields.
61
62	## 5) Output
63	- Input data type: grammar-resolved placements.
64	- Core node/classes: `UPCGStaticMeshSpawnerSettings`, `UPCGSpawnActorSettings`, `UPCGCreateTargetActor`.
65	- Required parameters:
66	- Static path: mesh selector, instance packer, ISM/HISM policy.
67	- Actor path: actor class, spawn attributes, state/interaction requirements.
68	- Output: rendered buildings and optional interactive building elements.
69	- Debug method: split output by layer/tag and validate per-layer counts.
70	- Default policy: prefer Static Mesh Spawner; use Spawn Actor only when stateful behavior is required.
71
72	## 6) Validate
73	- Input data type: final spawned result and runtime generation state.
74	- Core node/classes: `UPCGDebugSettings`, `UPCGComponent`, `UPCGSubsystem`.
75	- Required parameters: expected cell bounds, max per-update spawn budget, nav/collision expectations.
76	- Output: pass/fail signals and fix actions.
77	- Debug method: run staged checks for overlap, navigation impact, per-cell generation time, and deterministic replay.
78
79	# Constraints
80	- Keep the main pipeline compatible with both UE5.6 and UE5.7 unless a version-specific note is required.
81	- Runtime generation must explicitly set:
82	- `GenerationTrigger = GenerateAtRuntime`
83	- explicit `GenerationRadii` (do not rely on implicit defaults)
84	- explicit `Sched

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