RayTraceAntiFreeCam

About

RayTraceAntiFreeCam is a lightweight anti-freecam protection plugin that prevents players from interacting with blocks they should not be able to reach or “see” legitimately.

Important Note

This plugin does not detect or prevent the client from moving its camera (freecam movement itself).
Instead, it blocks illegitimate block interactions (opening, clicking, breaking, placing, etc.) by validating that the target block is actually interactable from the player’s eye position using a ray-trace / line-of-sight style check.

Features

• Blocks “through-wall” interactions
  • Prevents opening containers (chests, barrels, shulkers, etc.) through blocks.
  • Prevents using buttons, levers, doors, trapdoors, etc. through walls.
• Prevents illegitimate block breaking
  • If the block is not realistically reachable/visible, breaking is cancelled.
• Prevents illegitimate building/placing via interaction filtering
  • Placement attempts that rely on clicking blocks through obstacles are denied (handled via click validation).
• Reach-aware
  • Uses the player’s real interaction range attribute (when available) and applies configurable limits.
• Optimized for stability
  • Avoids “random” false positives caused by yaw/pitch desync by not relying on the player’s exact view direction.
  • Uses short-term caching to keep decisions consistent while mining/holding clicks.

Permissions

raytraceantifreecam.bypass - Bypasses all checks. Default: OP.

Config (config.yml)

# Maximum allowed interaction distance (hard cap).
# Type: double | Typical: 5.0–6.0
max-reach: 6.0

# Extra tolerance added to reach to reduce edge-case false blocks (corners/close range/desync).
# Type: double | Typical: 0.25–1.0
extra-reach: 0.75

# Cache duration (ms) for the last player+block decision to prevent flickering while mining/holding click.
# Type: long | Typical: 100–250
cache-ttl-ms: 175

check:
  # Validate block interactions (right/left click on blocks: open/use/activate).
  # Type: boolean
  interact: true

  # Validate block breaking (mining).
  # Type: boolean
  break: true