https://doc.cdryx.net/CdryxAIOUPlugin/modules/cworldumodule/cabstractworldmaker/index.html Overview UCAbstractWorldmaker is the abstract base class for terrain generation. It manages the tile grid, LOD computation, async build pipeline, noise blending and mesh lifecycle. Concrete implementations (UCWorldmaker_ProceduralMesh, UCWorldmaker_DynamicMesh) provide the actual mesh creation. Pure Virtual Functions Name Description isFirstStart Returns true if no mesh has been created yet cleanPmc Destroys the mesh component at a given UV index calculatePoint Computes tile mesh data (LOD, vertex count, transform) for a world/relative UV pair createPMC_sync Creates mesh components on the game thread from pre-calculated data debug Toggles debug material on/off for all mesh components // These must be implemented by subclasses: virtual bool isFirstStart() = 0; virtual void cleanPmc(FCUVIndex index, bool clearContent, bool remove = true) = 0; virtual void calculatePoint(const FCUVIndex& world, const FCUVIndex& rel) = 0; virtual void createPMC_sync(const TArray<TPair<FCUVIndex, FCUVIndex>>& pairUVArray, bool poolStart, int poolSize) = 0; virtual void debug(bool onOff, UMaterialInterface* debugMaterial) = 0; Build Pipeline Name Description buildASync Entry point called by the spawner. Runs drawFloor async then updatePMC_sync on game thread wantDraw Guards against redundant draws: checks room state, pawn movement and queue status drawFloor Computes the tile grid around the pawn, runs calculatePoint in parallel, enqueues pooled batches updatePMC_sync Dequeues one batch, removes old tiles, calls createPMC_sync, broadcasts delegates adaptPoolSize Dynamically adjusts pool batch size based on frame time // buildASync is the main entry point, called each tick by ACWorldSpawner: worldmaker->buildASync(singleDoRun, pawnX, pawnY); // Internally: // 1. wantDraw() checks if a new draw pass is needed // 2. drawFloor() computes UV grid, runs calculatePoint() in ParallelFor // 3. Results are enqueued as FCWorldDataQueue batches // 4. updatePMC_sync() dequeues and creates meshes on game thread Z Calculation & Noise Blending Name Description innerZCalculate Computes the Z height at (x,y) by blending world, cluster, room and edge noises calcMax4PointSlope Samples 4 surrounding points to estimate terrain slope calcNormal Computes a surface normal from 3 sample points bendRotatorOnSlope Adapts a rotator to align with the computed slope // innerZCalculate blends multiple noise layers: // - worldNoise: base terrain noise // - clusterNoise: per-cluster noise variation (with optional specific noise per cluster) // - clusterShiftNoise: shift noise for cluster boundaries // - roomNoise: noise variation inside rooms // Blending uses easeIt() with the configured easeMethod (default QuinticInOut). FLinearColor vertexColor; float z = worldmaker->innerZCalculate(x, y, vertexColor); // Vertex color encodes spatial context for material use: // R = cluster proximity (0 = outside, 1 = center) // G = room proximity (0 = outside, 1 = center) // B = corridor/edge proximity (0 = outside, 1 = center) // A = biome noise value (normalized) Noise Sources Name Description worldNoise Base terrain noise, singleton CNAME_Singleton_WorldNoise biomeNoise Biome boundary noise, singleton CNAME_Singleton_BiomeNoise. Stored in vertex color alpha clusterNoise Cluster-level noise, singleton CNAME_Singleton_ClusterNoise. Can be overridden per cluster clusterShiftNoise Cluster boundary shift noise, singleton CNAME_Singleton_ClusterShiftNoise. Can be overridden per cluster roomNoise Room-level noise, singleton CNAME_Singleton_RoomNoise State & Delegates Name Description isReady Returns true once noise initialization is complete isBuilt Returns true once all tile batches have been processed isRendered Checks if a tile at (x,y) is rendered, outputs UV index and full LOD status onTileReady Delegate broadcast when a tile mesh is created (with UV index and fullLOD flag) onTileRemoved Delegate broadcast when a tile mesh is removed (with UV index and area rectangle) // Bind to tile lifecycle events: worldmaker->onTileReady.AddDynamic(myObject, &ICWorldBoundable::onTileReady); worldmaker->onTileRemoved.AddDynamic(myObject, &ICWorldBoundable::onTileRemoved); // Check world state: if (worldmaker->isReady()) { /* Z queries are safe */ } if (worldmaker->isBuilt()) { /* all tiles generated */ } FCUVIndex uvIndex; bool fullLOD; if (worldmaker->isRendered(x, y, uvIndex, fullLOD)) { // tile exists and is rendered } Hugo en-us