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Fix ambient flyer cadence and rotating shadows

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Erik 2026-08-22 17:39:38 +02:00
parent 9cd429dd73
commit 8b7b601b32
5 changed files with 239 additions and 3 deletions
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20
src/AcDream.App/Rendering/RetailStaticAnimatingObjectScheduler.cs
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@ -23,6 +23,15 @@ internal sealed class RetailStaticAnimatingObjectScheduler : ILiveStaticPartFram
private const double FrameEpsilon = 0.000199999995;
private const float MaximumElapsed = 2f;
// The eight retail SetOmega-authored ambient-flyer animations use their
// vector as a per-animation-quantum turn. Their animation data is authored
// at 30 fps; replaying that raw turn once per modern host/render frame
// makes orbit speed scale with monitor refresh (6x at 180 Hz). Keep the
// exact authored result at 30 Hz while making the DAT-scenery projection
// independent of host cadence. Live PhysicsBody owners retain the literal
// CPhysicsObj branch below and are deliberately not changed here.
private const double DatStaticOmegaReferenceHz = 30d;
private sealed class Owner
{
public required WorldEntity Entity;
@ -468,10 +477,17 @@ internal sealed class RetailStaticAnimatingObjectScheduler : ILiveStaticPartFram
// static has no CPhysicsObj of its own, so the WorldEntity IS
// the frame retail would be rotating — and the render
// projection re-reads entity.Rotation every frame, so the
// parts composed below orbit it.
// parts composed below orbit it. SetOmega's authored vector is
// a 30 Hz per-animation-quantum turn; normalize it at this
// modern host boundary so monitor refresh cannot change the
// flight period.
owner.RootFrameScratch.Origin = owner.Entity.Position;
owner.RootFrameScratch.Orientation = owner.Entity.Rotation;
FrameOps.GRotate(owner.RootFrameScratch, owner.Omega);
float omegaScale = (float)(
ownerElapsed * DatStaticOmegaReferenceHz);
FrameOps.GRotate(
owner.RootFrameScratch,
owner.Omega * omegaScale);
owner.Entity.Rotation = owner.RootFrameScratch.Orientation;
}