Fr0zkaandClaude Opus 5.5
05f62cff36
Standalone/ (C++20, MSVC /O2 /arch:AVX2 /fp:precise, Build.ps1): copied density pipeline, op stack, cave morphology, passages, strate manager/composer, noise, DetSinCos, mesher, clipmap selection, with a UE compatibility layer (Compat/). Owner data exported once to Standalone/data/owner_world.json by a default-off explore-commandlet exporter (the only plugin-source change). 25 cm voxels. Parity: seed 0, 3,436 samples (strate edges, negative/far coords, rooms, tunnels, passages, landings): bit-identical. Viewer: full 7-level clipmap, per-level toggles 1-7, T = round winding tunnels (standalone option), N/P seed, F wireframe. Timing NOT yet a baseline: 515 s for 12,054 tiles (L0 70 s, L6 296 s); the compat TMap/TSet are vector-backed with linear lookup, which the plugin's caches do not expect. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
// VoxelWormField.cpp
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// Shared deterministic exact worm-field evaluation.
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#include "VoxelWormField.h"
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#include "VoxelCaveMorphology.h" // VoxelHash::SeedOffset
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#include "VoxelNoise.h"
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#include "VoxelTypes.h" // VOXEL_NOISE_SCALE
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namespace
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{
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FORCEINLINE FVector3f MakeWormNoiseBase(
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float WorldX,
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float WorldY,
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float WorldZ,
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const VoxelWormField::FParameters& Parameters)
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{
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const float EffectiveZ = (Parameters.VerticalScale != 1.0f
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&& Parameters.VerticalScale > 0.0f)
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? WorldZ / Parameters.VerticalScale : WorldZ;
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const float WormZFrequency = Parameters.Frequency * Parameters.HorizontalBias;
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return FVector3f(
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WorldX * Parameters.Frequency
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+ VoxelHash::SeedOffset(Parameters.Seed, 1.0f),
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WorldY * Parameters.Frequency
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+ VoxelHash::SeedOffset(Parameters.Seed, 1.7f),
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EffectiveZ * WormZFrequency
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+ VoxelHash::SeedOffset(Parameters.Seed, 2.3f));
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}
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FORCEINLINE float EvaluateN1Field(
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float WorldX,
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float WorldY,
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float WorldZ,
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const VoxelWormField::FParameters& Parameters,
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float NoiseScale)
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{
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const FVector3f NoiseBase = MakeWormNoiseBase(
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WorldX, WorldY, WorldZ, Parameters);
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return FMath::Abs(VoxelNoise::Perlin3D(NoiseBase) * NoiseScale);
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}
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FORCEINLINE float EvaluateN2Field(
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float WorldX,
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float WorldY,
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float WorldZ,
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const VoxelWormField::FParameters& Parameters,
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float NoiseScale)
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{
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const FVector3f NoiseBase = MakeWormNoiseBase(
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WorldX, WorldY, WorldZ, Parameters);
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const FVector3f N2Position = NoiseBase + FVector3f(137.0f, 259.0f, 431.0f);
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return FMath::Abs(VoxelNoise::Perlin3D(N2Position) * NoiseScale);
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}
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FORCEINLINE float EvaluateExactField(
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float WorldX,
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float WorldY,
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float WorldZ,
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float Threshold,
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const VoxelWormField::FParameters& Parameters)
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{
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const float NoiseScale = VOXEL_NOISE_SCALE;
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const float N1 = EvaluateN1Field(
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WorldX, WorldY, WorldZ, Parameters, NoiseScale);
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// N2 is non-negative, so this preserves the exact evaluator's short-circuit.
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if (N1 >= Threshold)
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{
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return N1;
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}
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return N1 + EvaluateN2Field(
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WorldX, WorldY, WorldZ, Parameters, NoiseScale);
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}
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}
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namespace VoxelWormField
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{
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float Evaluate(
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float WorldX,
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float WorldY,
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float WorldZ,
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float Threshold,
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const FParameters& Parameters)
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{
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return EvaluateExactField(WorldX, WorldY, WorldZ, Threshold, Parameters);
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}
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}
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