Iustitia / Docs / Combat / Backtrack

Backtrack

[!] Inferential
Backtrack / StalePositionReach — the cheat delays victim packets ~80-150ms to hit the victim at an older (closer) position. Weak, corroborating only.
id: backtrack  ·  class: BacktrackCheck  ·  group: Combat

What it detects

Backtrack / StalePositionReach — the cheat delays victim packets ~80-150ms to hit the victim at an older (closer) position. Weak, corroborating only.

Observer signature

On AttackEvent computes eye-to-current-victim-hitbox closest-point distance; if current pos is out of reach (curDist > reach + 0.5), iterates the victim's last ~4 ring-buffer positions and flags at level 1.0 if any is within reach + 0.5.

False-positive guards

  • Attacker-in-vehicle exempt
  • Current position must be out of reach (in-reach -> not backtrack, early return)
  • Pose-aware victim hitbox
  • Chunk-unloaded-safe (uses only server-rebroadcast pos)
  • High setbackVL (10) so it rarely alerts on its own

Configuration

Defaults (editable in-game via the YACL config screen or /ius config):

FieldDefault
enabledtrue
setbackVL10.0
decay0.25
threshold3.0
margin+0.5 blocks
ring window4 ticks

Source

src/main/kotlin/dev/iustitia/checks/combat/BacktrackCheck.kt  ↗