One zone node at the massive roots' centre of mass owns the only global term (SubzoneReach is the one place the subzone shape is decided: isolated-subzones). WellNode gains Extent and Anchor; a belt orbit's extent is its outermost asteroid. GravityField.SeriesFrom = 0.4 is emitted into the shader template and Gravity.cginc. Tests: the spec's WellLawTests; the old seam test is replaced by TheBandPotentialIsExactInSinglePrecision. GravityFieldParityVerify runs the multi-root fixture (second sun, moon inside the planet's Roche limit, far window): PASS, largest drawn tau 1.228, max error 0.01028 u. The dotnet suite has not been run at this commit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Batchmode on Starfire, Unity 6000.3.24f1: PASS, max error 0.01077 u (tolerance 0.03), gradient 0.07 degrees. The previous
frames teleported the planetoid away from its planet, which a compact tree rightly does not draw. WellTree.cs.meta added.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
GravityField is now the band term U(eps, inner, outer) (C4 smoothstep fade, closed form and a series for tau > 1).
WellTree is built once per Zone from the orbit tree: node terms, reach, support, the pruned Force/Potential walk and
PullAround (rails). Zone.GetHeight/GetForce/PeriodAround delegate to it; WellReference, _wellOn, _strengths,
Strength() and DrawAhead.Well are gone; GravityLowering and the shader template take the flat term list;
HeightExaggeration halves to 2.0491803.
Does not pass yet: Gravity.cginc is not regenerated and PotentialOwnerTests/OrbitsFromFieldTests still spell the old law.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ambient Fog Light leaves Zone Brushes (root object, same pose) and Sector Tint.mat moves from
PowerBrush to Brushes/Ambient Brush: brightness falls as exp(-x^2 ln(1/_EdgeBrightness)), x in
units of Zone.PopulatedRadius. ZoneRenderer.FitAmbientLight, called by LoadZone, is the one
writer of the quad's size and _Reach (the radius where it is 1e-5 of the centre). AmbientEdgeVerify
renders the real scene object through that call. Builds in Unity 6000.3.24f1.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Planets, belts, wells, loot, mines, stations, the chunk reticle and the flow
clock are evaluated through DrawAhead (Time, Orbit, Height, Position) at one
drawn time; the rail law lives once in Zone.Offset; OrbitPositionAt, GetHeight,
ChunkPose, EvaluateBelt and RideHeight take a time. Fixes the planet jumping
against a co-moving ship at display rates above the step rate.
Not yet built or run (Unity presenter files are verified by compile only on
Starfire).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
cloudDensity adds the R32 gravity height to the patch texture, so Main Menu and TestScene patch cameras (mask 5632) counted layer 9 twice. Mask 5120, and GravityFieldParityVerify now asserts each of ARPG, Main Menu and TestScene excludes layer 9 from its Fog Patch Displacement camera.
All commits build as far as C# goes; verify runs after the second commit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Patch Displacement no longer culls layer 9; cloudDensity adds the surface displacement to the patch-only displacement.
GravityFieldParityVerify wiring checks the camera. Neither commit has been built when this is written.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
core-at-roche-and-exaggeration-up: PlanetSettings.CoreRadius and Planet.CoreRadius are
deleted; the well's softened core reads the RocheLimit curve (one curve of mass). The
core < Roche guard cannot fail and is replaced by a Roche-limit-positive-and-finite
check. Settings.asset: CoreRadius removed, HeightExaggeration 10 -> 4.0983607
(10 / (7.32 / 3)). Tests pin the new curves and the peak drawn slope / 2.44x steeper tail.
Not yet built or run at this commit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The mirror test compared a normalised reading of two spellings and was beaten twice (a statement before the return, gravityHeight's sum). GravityShader writes the whole file (potential, zero-strength guard, reference term, height sum) from GravityField's constant (TailOffset); GravityShaderTests fails on any difference. GravityShaderMirrorTests deleted. GravityFieldParityVerify opens Main Menu.unity: no ZoneRenderer there, its Fog Surface Displacement camera is the menu's own brush presentation (layers 9 and 10) by spec.
Builds not yet verified on this commit; verified at the final merge.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
GravityShaderMirrorTests compares the expression of GravityField.Potential with gravityPotential in Gravity.cginc.
GravityFieldParityVerify now builds four off-axis bodies (one of mass 0), lowers through three frames with bodies moved
between them, and checks the map screen's gravity camera mask. RTS/Planet.prefab loses the Gravity Well object bound to
the Gravity Field material. Builds: yes (verify passes on Starfire; the new test is unrun until the Yggdrasil job).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Zone.WellReference owns each body's reference zero (GetHeight uses it). Gravity.cginc mirrors GravityField.Potential;
Brushes/Gravity Field draws depth = -h on layer 9 from a StructuredBuffer that GravityLowering.Lower fills from the
zone each frame; GravityLowering.CreateField makes the one quad. GravityFieldParityVerify renders it and compares every
texel with -Zone.GetHeight (max error 0.0059 u), the gradient with GetForce (0.03 degrees) and the wiring.
Deleted: the Gravity Well children of Planet, Gas Giant, Sun and PlanetOutpost prefabs, Wormhole 1's three gravity
children, their overrides in Main Menu and TestScene, five wormhole/wave materials and two brush shaders,
Planet.GravityWellDepth/Radius, BodyData keys 6-7, PlanetSettings.GravityDepth/GravityRadius (and the Settings.asset
keys). Surface Displacement culls layer 9 only. Headless build and tests not yet run at this commit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
