🛠️ DuckyAC v1.1.6 - PacketEvents & Detection Expansion Update

In v1.1.6, we're expanding the packet analysis system with two brand-new checks, improving block interaction accuracy, adding a dedicated debug command, and introducing PacketEvents support for better packet handling and future compatibility.

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🔍 Fixes

🧱 ThruBlocksB -- Additional False Positive Fix

• Fixed another false positive in ThruBlocksB.
• Improved block interaction validation to reduce unintended violations in edge-case scenarios.
• Enhances overall reliability of wall and obstacle detection.

🧪 Potion Effect Handling Improvements

• Updated internal potion effect handling logic.
• Improves compatibility with modern Minecraft versions and gameplay mechanics.

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✨ New Features

📦 PacketEvents Support

• Added PacketEvents as a soft dependency.
• Provides a more robust packet processing foundation for future detections and compatibility improvements.
• Allows DuckyAC to leverage additional packet-level information when available.

📡 BadPacketsA (New Check)

• Introduced BadPacketsA, a new packet validation check.
• Detects invalid or abnormal packet behavior commonly associated with modified clients.
• Designed for low false positive rates and lightweight performance impact.

⚡ FastPlaceB (New Check)

• Added FastPlaceB, a new block placement detection.
• Targets unnatural block placement speeds and automated placement behavior.
• Complements existing placement-related protections for improved coverage.

🐞 Experimental Debug Command

Added a new command:

/duckyac debug

• Provides diagnostic information useful for troubleshooting and testing detections.
• ⚠️ This feature is currently experimental. Some functions may not work correctly yet and behavior may change in future updates.
• Intended primarily for development, testing, and advanced debugging purposes.

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⚙️ Config Additions

Added full configuration support for BadPacketsA and FastPlaceB.

⚠️ Important: Updating your config.yml is required when upgrading to v1.1.6. Failure to add the new configuration sections may result in startup errors or disabled functionality.

BadPacketsA

# BAD PACKETS A
badpackets-a:
  enabled: true
  min-delta: 0.1
  max-ratio: 100.0
  min-ratio: 0.01
  debug: false
  max-alerts: 5
  command: "kick %player% Suspicious aim packets (BadPacketsA)"

FastPlaceB

# FAST PLACE B
# Detects placing blocks too quickly (anti-fast-place).
fastplace-b:
  enabled: true # Function to enable/disable check
  max-blocks-per-second: 14
  min-samples: 6
  min-avg-gap-ms: 55.0
  min-std-dev-ms: 8.0
  suspicious-avg-cap-ms: 250.0
  cancel-event: true # Enabling this feature will take you back to the position before reporting
  debug: false # Enable verbose debugging (may cause log spam / lag)
  max-alerts: 5 # Number of reports after which the command is executed
  command: "kick %player% Suspected fast place (FastPlaceB)" # The command that will be executed when the maximum number of reports is reached

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🔧 Internal Improvements

➗ MathUtil Utility

• Added a new internal utility class: MathUtil.java.
• Centralizes mathematical calculations used by multiple checks.
• Improves maintainability and consistency across the codebase.

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🌍 Compatibility Changes

🎮 Updated Minimum Supported Version

1.18.2 → 1.20.6

Java 16 → Java 21

• Ensures compatibility with newer APIs and packet handling improvements.

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📦 Version

• Updated plugin version to 1.1.6

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📌 Summary

This update introduces BadPacketsA and FastPlaceB, adds PacketEvents integration, improves ThruBlocksB accuracy, provides an experimental /duckyac debug command, and modernizes the plugin with updated compatibility requirements and internal utilities.

⚠️ Server owners upgrading from previous versions must update their config.yml with the newly added BadPacketsA and FastPlaceB sections before starting the server.