SwiftCore - Modern Practice Core v4.5.9

Core Performance Improvements

• Optimized QueueManager with reverse lookup maps for instant queue access and player removal
• Improved queue operations from O scans to O(1) lookups, reducing overhead during matchmaking
• Cached Arena kill, respawn, and bed-destroy messages to remove repeated YAML reads during gameplay

System Optimizations

• Implemented static countdown timing constants in DuelManager to reduce repeated object allocations
• Optimized PartyGameManager countdown handling by moving Component and Title creation outside player loops
• Replaced small dynamic lists with lightweight immutable lists for better memory efficiency

Configuration Improvements

• Added configurable messages in messages.yml:
  • kit-auto-saved
  • kit-reset
• Both messages are now cached through MessagesManager, improving performance and allowing full customization.

Scoreboard & Tablist Improvements

• Scoreboard line updates throttled to every 10 ticks, title updates remain every tick for smooth animations
• Tablist header/footer throttled — non-animated players update every 20 ticks
• Implemented thread-safe SwiftBoard handling (updateTitle, updateLines, delete)

Hot-Path Event Optimizations

• Cached block-decay configuration values used during PlayerMoveEvent
• Cached per-kit damage multiplier map used during combat events
• Cached spectator teleport distance for spectator movement checks
• Cached arena outbound kill/delay settings used in arena movement checks
• Cached FFA outbound settings used during FFA movement events
• Cached kill sounds and BedWars titles/sounds used during kills and bed breaks
• Cached KillMessageManager configuration and message lists used during kill events

Timer Loop Optimizations

• Cached TNT Tag actionbar formats (runs every second)
• Cached Flower Crown actionbar formats (runs every second)
• Optimized PartyGameManager with 19 cached values (sounds, titles, countdowns, team icons/colors, disabled kits, etc.)
• Cached FFA countdown titles and final-title lists used during player join countdowns

Redundant Config Read Fixes

• Fixed unused cached values in DuelManager (cachedSpectatorTime, cachedKitColoredArmor)
• Cached match.kit-colored-armor in ArenaListener (multiple usage points)
• Cached sign-queue.format in SignQueueManager
• Cached party countdown configuration in MatchFoundEffects

• Replaced Bukkit Scoreboard API with packet-based scoreboard system (PacketEvents)
• Removed heavy objective.displayName() and team.prefix() calls causing DFU CPU load
• Implemented pre-parsed tablist templates to eliminate runtime regex processing
• Added per-placeholder change detection to prevent unnecessary updates
• Introduced per-placeholder PAPI cache TTL (fast/normal/slow intervals)
• Cached tablist header/footer components to avoid redundant serialization
• Throttled PAPI cleanup tasks to every 5 seconds
• Reduced scoreboard animation refresh rate 20 → 10 updates/sec

• Reduced scoreboard animation refresh rate (20→10 updates/sec)
• Throttled PAPI cache cleanup to run every 5 seconds (instead of every tick)
• Optimized tablist header/footer updates — now only re-serializes changed components
• Eliminated redundant Adventure→NBT serialization
• Short-circuited expensive regex checks in MiniMessage detection
• Reduced unnecessary ConcurrentHashMap cleanup calls

• Fixed critical async preload bug — kit tier data now loads correctly (no more default/zero points issue)
• Added proper pendingLoads system to prevent duplicate loads
• Replaced per-event YAML saves with 5s batched flush system
• Reduced file write spam and async task overload
• Cached getStartingTier() config lookups (no more hot-path config traversal)
• Converted player unload saves to async (removed main-thread YAML I/O)
• Improved overall network stability and server consistency
  
  we are not spaming update we are test on big server and finding issues

• Converted all sync DB reads to async preload system
• Implemented 5s batched stat saving (reduced async spam)
• Added immediate save on quit & safe shutdown flush
• Cached hot-path config values (scoreboard/placeholders)
• Reduced Netty congestion and network backpressure
• Improved overall server stability and consistency

• Previously, the ender pearl check was inverted and blocked pearls for everyone who was not in a match, which disabled pearls in lobby, spawn, and all non-arena worlds.
• Now the logic only applies to players who are in an active match and inside an arena.
• If a matched player tries to pearl outside the arena region, the teleport is cancelled to prevent abuse.
• Lobby, spawn, and any other worlds are untouched now – pearls work normally again.
• Pearl entities are still cleaned up on match end via the existing cancelThrownPearl() logic, so there are no leftover projectiles.

Quick Setup: Add to config.yml or delete config.yml to regenerate:
match:
match-found:
instant-queue: true # true = instant match, false = 3s delay
delay: 0 # 0 = instant start (no countdown)
What's Fixed:

• Instant Queue — Skips both 3s delays (queue + match effects) when instant-queue: true
• Configurable Delay — Set delay: 0 for zero-delay matches
• Hex Colors — Placeholder values (like %kit%) now properly convert &#RRGGBB & MiniMessage codes
• Kit Editor — Uses messages.yml for "kit-saved" & "left-editor" instead of hardcoded text

Direct duels (/duel accept) unaffected — keep normal flow.

Note: messages.yml — Remove hardcoded "Starting in 3 seconds..." if using instant mode.