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Editor tool for the LA and 3D departments: which assets each level uses, which are used nowhere, and export of a chosen set. Three modules. AssetUsageAuditCore holds the whole analysis and links no UI and no editor-only asset pipeline, so it stays runnable from a commandlet; AssetUsageAuditEditor holds the Slate panel and everything that needs UnrealEd or AssetTools; AssetUsageAuditTests holds 152 specs. Load-bearing decisions, each of which produces a wrong answer if undone: - Dependency queries are always Package + NoRequirements, never Hard. The map-to-external-actor edges the OFPA gatherer emits carry Game|Build without Hard, so a Hard query drops all 16117 external actor packages in this project. There is deliberately no Hard constant in the code. - Crossing into another map is allowed only from a level or its external actor package. Without that rule WP_Main reported 18136 assets, of which 9994 belonged to L_MainLevel, reached through the GameMode. - The verdict has five states, never a bool. The registry cannot see FMOD events, DataTable rows or string-built paths; those are Unknown, and the tool never proposes a deletion. - Copying .uasset files does not preserve references - they are stored as full package paths. Only the Migrate layout produces something Unreal can open; the others write a manifest so the graph can be rebuilt. Co-Authored-By: Claude Code <noreply@anthropic.com>
86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
// NextGenium 2026. Asset Usage Audit.
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#pragma once
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#include "CoreMinimal.h"
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#include "AssetUsageAuditTypes.h"
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#include "AssetTypeFilter.h"
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#include "AssetUsageGraph.h"
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#include "LevelUsageResolver.h"
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class IAssetRegistry;
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struct FAssetUsageAuditRequest
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{
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/** Roots to sweep. Empty means /Game. */
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TArray<FString> IncludePackagePaths;
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/** Package or content-relative prefixes to skip, e.g. "Content/3rdParty". */
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TArray<FString> ExcludePackagePaths;
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/** Levels to consider. Empty means every level found. */
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TArray<FName> LevelPackages;
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/** Type filter applied to the reported rows, not to the traversal. */
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FAssetTypeFilter TypeFilter;
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/** Scan Config/ and Source/ for path literals the registry cannot see. */
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bool bScanIndirectReferences = true;
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/** Drop rows for __ExternalActors__ / __ExternalObjects__ packages. */
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bool bHideExternalPackages = true;
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/** Drop redirector rows; they are plumbing, not content an artist acts on. */
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bool bHideRedirectors = true;
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/** Report only assets that no level reaches. */
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bool bOnlyUnusedAssets = false;
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FLevelUsageResolveOptions ResolveOptions;
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};
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// Exported: CountByVerdict is defined out of line, so the Editor module cannot link without this.
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struct ASSETUSAGEAUDITCORE_API FAssetUsageAuditResult
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{
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TArray<FAssetUsageRow> Rows;
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FAssetUsageReportHeader Header;
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FAssetUsageGraphStats GraphStats;
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FLevelUsageStats LevelStats;
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int32 CountByVerdict(EAssetUsageVerdict Verdict) const;
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};
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/**
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* Runs the whole analysis: graph, level reachability, indirect scan, verdicts.
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*
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* Free of UI and of the editor asset pipeline, so the Slate panel and a future commandlet can
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* call exactly the same code and cannot drift apart.
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*/
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class ASSETUSAGEAUDITCORE_API FAssetUsageAuditor
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{
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public:
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static FAssetUsageAuditResult Run(IAssetRegistry& AssetRegistry, FAssetUsageAuditRequest& Request);
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/**
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* Classify one asset.
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*
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* Pure and exposed for testing: the ordering of these rules is the difference between a tool
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* people trust and one that tells an artist to delete the GameMode.
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*
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* @param bReachableFromLevel A level's traversal reached this asset.
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* @param bHasReferencers Something in the graph depends on it.
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* @param bFoundInConfigOrSource A path literal in Config/ or Source/ named it.
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* @param bIsBlindSpot Its type is one the registry cannot track reliably, e.g. FMOD.
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*/
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static EAssetUsageVerdict ClassifyVerdict(bool bReachableFromLevel, bool bHasReferencers, bool bFoundInConfigOrSource, bool bIsBlindSpot);
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/**
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* True for asset types whose real usage the Asset Registry cannot see.
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*
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* FMOD is the concrete case on this project: it resolves events by string path through the
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* FMOD Studio runtime, entirely outside the UObject reference graph, so "no referencers"
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* carries no information at all for an FMOD asset.
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*/
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static bool IsRegistryBlindSpot(const FAssetUsageNode& Node);
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};
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