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Remove server reconciliation in favor of pure client prediction

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The reconciliation system caused visible teleportation at high latency
(e.g. 250ms Germany→Korea): position corrections snapped the local
player and thrown items back to stale server states.

- Drop the inputAck/seq tracking, InputBuffer, and applyReconciliation.
  The client predicts locally and the server stays authoritative via
  the existing worldUpdate broadcast; own-doll updates remain ignored.
- Override Item.setUpdateData on the client so in-flight items run free
  on local Box2D physics (client and server share the same throw
  impulse) and only sync when stationary or far out of sync. This keeps
  grab-sensor contact accurate while eliminating mid-flight snapping.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jeena 2026-05-28 23:35:22 +00:00
parent a0481ed867
commit d39a55e20e
8 changed files with 31 additions and 152 deletions
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26
app/Game/Client/Me.js
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@ -4,10 +4,9 @@ define([
"Lib/Utilities/NotificationCenter",
"Lib/Utilities/Assert",
"Game/Client/Control/PlayerController",
"Game/Client/InputBuffer",
],
function (Parent, Settings, nc, Assert, PlayerController, InputBuffer) {
function (Parent, Settings, nc, Assert, PlayerController) {
"use strict";
@ -20,8 +19,6 @@ function (Parent, Settings, nc, Assert, PlayerController, InputBuffer) {
y: 0
};
this.inputBuffer = new InputBuffer();
this.arrowMesh = null;
this.createAndAddArrow();
this.playerController = new PlayerController(this);
@ -45,27 +42,6 @@ function (Parent, Settings, nc, Assert, PlayerController, InputBuffer) {
};
};
Me.prototype.applyReconciliation = function(x, y, vx, vy) {
var currentPos = this.doll.body.GetPosition();
var diffX = x - currentPos.x;
var diffY = y - currentPos.y;
var distance = Math.sqrt(diffX * diffX + diffY * diffY);
if (distance > Settings.RECONCILIATION_SNAP_THRESHOLD) {
// Large error — snap immediately (server-side teleport, respawn, etc.)
this.doll.body.SetPosition({x: x, y: y});
} else {
// Small error — blend toward reconciled position
var factor = Settings.RECONCILIATION_BLEND_FACTOR;
this.doll.body.SetPosition({
x: currentPos.x + diffX * factor,
y: currentPos.y + diffY * factor
});
}
this.doll.body.SetLinearVelocity({x: vx, y: vy});
};
Me.prototype.createAndAddArrow = function() {
var self = this;