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Replace cheat-detection teleport with server reconciliation

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The old PUNKBUSTER check compared client-reported position to server
position and snapped the player back when latency made them diverge,
which felt like getting teleported under any real network conditions.

Replaces that with proper client-side prediction + reconciliation:
client tags each input with a sequence number and keeps an input
buffer; server tracks the last processed sequence and reports its
authoritative position via a per-user inputAck alongside each
worldUpdate. The client only corrects when the actual disagreement
exceeds what the unacked input time can explain — so steady-state
movement runs purely on local physics, and only genuine unexpected
events (collisions, being hit) trigger a smooth blend toward the
server state.

Includes adaptive threshold scaling so high-latency sessions don't
false-positive corrections during normal running.
This commit is contained in:
Jeena 2026-05-11 00:37:42 +00:00
parent e6089687ed
commit 71e4b4e847
9 changed files with 162 additions and 149 deletions
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17
app/Game/Channel/GameObjects/Doll.js
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@ -2,11 +2,10 @@ define([
"Game/Core/GameObjects/Doll",
"Game/Channel/GameObjects/Item",
"Lib/Vendor/Box2D",
"Lib/Utilities/NotificationCenter",
"Lib/Utilities/Assert"
"Lib/Utilities/NotificationCenter"
],
function (Parent, Item, Box2D, nc, Assert) {
function (Parent, Item, Box2D, nc) {
"use strict";
@ -93,16 +92,6 @@ function (Parent, Item, Box2D, nc, Assert) {
}
};
Doll.prototype.updatePositionState = function(update) {
if(!this.isAnotherPlayerNearby()) {
Assert.number(update.p.x, update.p.y);
Assert.number(update.lv.x, update.lv.y);
this.body.SetAwake(true);
this.body.SetPosition(update.p);
this.body.SetLinearVelocity(update.lv);
}
};
Doll.prototype.getUpdateData = function(getSleeping) {
var updateData = Parent.prototype.getUpdateData.call(this, getSleeping);