GameCult/Aetheria
Watch
9
0
Fork
You've already forked Aetheria
 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

DrawAhead.RockMeshing owns the mesh ranking and each rock's scale; a mesh with no radius is refused by name (finding renderer-wiring-unpinned)

Browse source 
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-10-17 21:44:43 +02:00
commit 8412aa0dc3
3 changed files with 81 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

44
Assets/Scripts/ServerShared/DrawAhead.cs
View file

@ -41,24 +41,40 @@ public static class DrawAhead
ChunkAt(zone, settings, zone.ChunkPose(chunk.Field, chunk.Index, Time(zone, lead)), lead);
// The scale that draws a mesh of the given measured radius (its farthest vertex from the mesh origin, a bound under any rotation) at the
// rock's gameplay radius (ruling rock-meshes-by-size).
public static float RockScale(float gameplayRadius, float meshRadius) => gameplayRadius / meshRadius;
// rock's gameplay radius (ruling rock-meshes-by-size). A radius that is not set is refused by name, never divided by.
public static float RockScale(float gameplayRadius, float meshRadius) =>
meshRadius > 0f ? gameplayRadius / meshRadius : throw new System.ArgumentException("InstancedMesh.Radius is not set (zero, negative or not a number): run RockMeshRadius.Fill.");
// Which mesh each rock of a belt takes (ruling rock-meshes-by-size): rocks ranked by unworn size take meshes ranked by authored size, the
// meshes in ascending radius order. The rocks split into meshCount runs by rank, the last run taking the remainder; equal sizes rank by
// index, so the answer is stable. Unworn, so a mined rock keeps its mesh and only shrinks.
public static int[] AssignRockMeshes(AsteroidBelt belt, PlanetSettings settings, int meshCount) =>
AssignRockMeshes(Enumerable.Range(0, belt.Data.Asteroids.Length).Select(i => belt.UndamagedSize(i, settings)).ToArray(), meshCount);
public static int[] AssignRockMeshes(IReadOnlyList<float> unwornSizes, int meshCount)
// Which mesh each rock of a belt takes, and at what scale (ruling rock-meshes-by-size). meshRadii are the kept meshes' measured radii in
// the renderer's own order; the meshes are ranked by radius here, not by the caller. Rocks ranked by unworn size split into one run per mesh,
// smallest rocks on the smallest mesh and the last run taking the remainder; equal sizes and equal radii rank by index, so the answer is stable.
// Unworn, so a mined rock keeps its mesh and only shrinks. The renderer builds its instance matrices from Mesh and Scale and decides neither.
public sealed class RockMeshing
{
var order = Enumerable.Range(0, unwornSizes.Count).OrderBy(i => unwornSizes[i]).ThenBy(i => i).ToArray();
var run = System.Math.Max(1, unwornSizes.Count / meshCount);
var mesh = new int[unwornSizes.Count];
for (var rank = 0; rank < order.Length; rank++) mesh[order[rank]] = System.Math.Min(rank / run, meshCount - 1);
return mesh;
private readonly float[] _meshRadii;
// Per rock: the index into meshRadii (as given) of the mesh it takes.
public int[] Mesh { get; }
public RockMeshing(IReadOnlyList<float> unwornSizes, IReadOnlyList<float> meshRadii)
{
_meshRadii = meshRadii.ToArray();
for (var m = 0; m < _meshRadii.Length; m++)
if (!(_meshRadii[m] > 0f)) throw new System.ArgumentException($"InstancedMesh.Radius of mesh #{m} is not set (zero, negative or not a number): run RockMeshRadius.Fill.");
var meshByRank = Enumerable.Range(0, _meshRadii.Length).OrderBy(m => _meshRadii[m]).ThenBy(m => m).ToArray();
var rockByRank = Enumerable.Range(0, unwornSizes.Count).OrderBy(i => unwornSizes[i]).ThenBy(i => i).ToArray();
var run = System.Math.Max(1, unwornSizes.Count / _meshRadii.Length);
Mesh = new int[unwornSizes.Count];
for (var rank = 0; rank < rockByRank.Length; rank++) Mesh[rockByRank[rank]] = meshByRank[System.Math.Min(rank / run, meshByRank.Length - 1)];
}
// The scale that draws the rock at its current gameplay radius on the mesh it was given.
public float Scale(int rock, float gameplayRadius) => RockScale(gameplayRadius, _meshRadii[Mesh[rock]]);
}
public static RockMeshing AssignRockMeshes(AsteroidBelt belt, PlanetSettings settings, IReadOnlyList<float> meshRadii) =>
new(Enumerable.Range(0, belt.Data.Asteroids.Length).Select(i => belt.UndamagedSize(i, settings)).ToArray(), meshRadii);
// A ship in a wormhole animation has its pose scripted by the step, not integrated from Velocity and TurnRate,
// so it is drawn where the step put it: extrapolating a scripted pose draws a streak that resets every step.
// A child is drawn where its parent is drawn, as the step copies the parent's pose onto it.