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feat(net): port retail physics spawn and event timestamps

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Parse the complete PhysicsDesc plus F754/F755 packets, correct every PhysicsState bit, and gate all nine retail update channels with generation-safe immutable snapshots. Preserve ForcePosition, teleport, placement, velocity, parent, pickup, delete, and same-generation CreateObject ordering from the named client.

Separate accepted logical lifecycle notifications from retained UI qualities, make GUID replacement and session reset clear every projection exactly once, and add packet, wraparound, malformed-input, parent FIFO, canonical-position, reconnect, and GUID-reuse conformance coverage.

Co-Authored-By: Codex <noreply@openai.com>
This commit is contained in:
Erik 2026-07-14 00:22:17 +02:00
parent d53fe30ffe
commit 8a5d77f7f4
50 changed files with 3809 additions and 649 deletions
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24
src/AcDream.App/Input/PlayerMovementController.cs
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@ -395,6 +395,10 @@ public sealed class PlayerMovementController
/// strict subset of the funnel's Contact+OnWalkable gate).</summary>
internal bool BodyInContact => _body.InContact;
/// <summary>Retail <c>SendPositionEvent</c> admission gate: both Contact
/// and OnWalkable must be present on the local physics body.</summary>
internal bool CanSendPositionEvent => _body.InContact && _body.OnWalkable;
/// <summary>R4-V5: body orientation for the <see cref="MoveTo"/>
/// manager's position seam (re-derived from <see cref="Yaw"/> every
/// Update — heading reads/writes go through Yaw, not this).</summary>
@ -508,7 +512,7 @@ public sealed class PlayerMovementController
_body.SnapToCell(cellId, pos, cellLocal);
_prevPhysicsPos = pos;
_currPhysicsPos = pos;
UpdateCellId(cellId, "teleport");
UpdateCellId(_body.CellPosition.ObjCellId, "teleport");
// Treat as grounded after a server-side position snap.
_body.TransientState = TransientStateFlags.Contact | TransientStateFlags.OnWalkable;
@ -547,6 +551,20 @@ public sealed class PlayerMovementController
_physicsAccum = 0f;
}
/// <summary>
/// Retail <c>SmartBox::BlipPlayer</c> (0x00453940): apply a server
/// FORCE_POSITION correction through <c>CPhysicsObj::SetPositionSimple</c>
/// without the teleport hook. Active motion, velocity, contact state, and
/// PositionManager stick relationships deliberately survive the blip.
/// </summary>
public void BlipPosition(Vector3 pos, uint cellId, Vector3 cellLocal)
{
_body.SnapToCell(cellId, pos, cellLocal);
_prevPhysicsPos = pos;
_currPhysicsPos = pos;
UpdateCellId(_body.CellPosition.ObjCellId, "force-position");
}
private Vector3 ComputeRenderPosition()
{
float alpha = Math.Clamp(_physicsAccum / PhysicsBody.MinQuantum, 0f, 1f);
@ -1196,9 +1214,7 @@ public sealed class PlayerMovementController
// Grounded-on-walkable gate per acclient_2013_pseudo_c.txt:700327
// (`(state & 1) != 0 && (state & 2) != 0`). Both flags must be
// set simultaneously, NOT a bitwise-OR mask test.
bool groundedOnWalkable = _body.InContact && _body.OnWalkable;
HeartbeatDue = groundedOnWalkable && sendThisFrame;
HeartbeatDue = CanSendPositionEvent && sendThisFrame;
// R3-W6: the K-fix5 LocalAnimationSpeed synthesis is DELETED — the
// run pacing now comes from the ported machinery itself