Changelog

[1.5.1] - 2026-02-20

Fixed

• Critical Performance: Zero-Allocation Pipeline — Eliminated all per-frame table and string allocations from the 20Hz update loop
  • Memory reduced from 5.4 MB (and climbing) to ~500 KB stable after 5 minutes of flying
  • Eradicated compounding GC freezes (previously ~650 ms/s CPU spikes every few minutes)
• C-API Table Leak — C_Spell.GetSpellCharges and C_Spell.GetSpellCooldown were allocating new tables from the C-client on every call (~10,800 tables/min). Replaced with event-driven cache invalidated by SPELL_UPDATE_COOLDOWN
• Secret Value Fallback Leak — When spell data was flagged as secret, charge/cooldown/pitch handlers allocated fresh tables every frame (~46,800 tables/min). All secret branches now mutate pre-allocated static buffers
• Visibility Logic Leak — Logic/visibility.lua called Result.success({...}) 5+ times per frame. Rewrote to use pre-allocated static result buffers
• Speed Display String Leak — string.format generated a new string every frame. Now caches the formatted text and only regenerates when the rounded display value changes
• IsSkyridingActive Closure Leak — Removed anonymous pcall(function() ... end) that created a new closure 20 times per second. Unwrapped to flat control flow with direct pcall(C_PlayerInfo.GetGlidingInfo)
• UI Layout Thrashing — ApplyVisibilityState recalculated frame positions every tick. Added state caching to skip redundant SetPoint/SetSize/Show/Hide calls

Changed

• Bridge Executor now bypasses FenCore.ActionResult.unwrap() in hot paths, reading .data directly from static result buffers
• Logic layers (Speed, Acceleration, Visibility) all use pre-allocated output buffers instead of ActionResult wrappers

[1.5.0] - 2026-02-10

Added

• Buff Recovery Indicators: Circle indicators for Thrill of the Skies and Ground Skimming charge recovery buffs
  • Colored dots appear next to the speed bar when buffs are active
  • Configurable visibility, size (4-24px), and colors per buff
  • New "Buff Indicators" settings tab
• Show on Ground Option: New visibility toggle to show the HUD when on a skyriding mount but still on the ground
  • Appears next to "Only Show When Skyriding" in settings
  • Grayed out when skyriding-only mode is disabled
• Pitch Bar (Experimental, Hidden): Position-based pitch estimation using UnitPosition triangulation
  • Shelved for refinement — code preserved but hidden from settings and HUD

[1.4.5] - 2026-01-22

Added

• HUD Click-Through: Frame is now click-through when locked, allowing clicks to pass through to the game world
  • Lock ON: Mouse passes through HUD to interact with game
  • Lock OFF: HUD is interactive and draggable
  • Works with settings toggle, Lock/Unlock buttons, and /flightsim lock|unlock commands

Fixed

• Speed Bar Scaling: Fixed bar fill and sustain marker starting at wrong position on initial load
  • Bar now uses zone-aware reference max (1430% Dragon Isles, 1215% Old World) for consistent scaling
  • Sustain marker now appears at correct ~65% position immediately without needing to fly first
  • Previously bar would show nearly full at cruise speed until session max was established
• Zone Detection: Zone modifier now refreshes on mount to ensure correct speed calculations

[1.4.4] - 2026-01-20

Fixed

• Frame Drag Positioning: Fixed frame jumping to incorrect position when dragging with scale != 1.0
  • Correctly compensates for scaled coordinate origin in SetPoint offset calculation
• Settings Panel Display: Fixed General tab controls showing blank values until edited
  • Added NotifyChange refresh when opening settings via slash command or Blizzard options

Changed

• Code Formatting: Applied StyLua formatting to all source files for consistent style

[1.4.3] - 2026-01-18

Fixed

• Speed Percentage Display: Changed baseline from mounted speed (8.24 y/s) to walking speed (7.0 y/s) to match WoW's standard speed percentage convention
  • Dragon Isles cruise now shows 929% (was 789%)
  • Old World cruise now shows 789% (was 671%)
  • Matches tooltips and other addons that use 100% = walking speed

[1.4.2] - 2026-01-17

Fixed

• Frame Position Persistence: Fixed frame position not saving correctly across profile switches and character logins
  • Frame now uses GetCenter() for accurate position capture after drag
  • Writes directly to SavedVariables to ensure persistence
  • Added migration to clean up stale root-level position data
• Zone-Aware Speed: Speed display now correctly accounts for zone modifiers (Dragon Isles vs Old World)
  • Uses Map ID detection with parent traversal for sub-zones and delves

Added

• /fs pos debug command for troubleshooting position issues

Known Issues

• Whirling Surge bar may not update on 11.2.7 (works on 12.0 PTR)

[1.4.1] - 2026-01-05

Fixed

• Localization files now check client locale before loading, preventing non-English strings (e.g., Chinese) from overwriting English on US/EU clients

All notable changes to Flightsim will be documented in this file.

The format is based on Keep a Changelog.

[1.4.0] - 2026-01-04

Added

• Full Localization: Complete translations for 10 languages
  • German (deDE), French (frFR), Spanish (esES/esMX), Italian (itIT)
  • Portuguese (ptBR), Russian (ruRU), Korean (koKR)
  • Chinese Simplified (zhCN), Chinese Traditional (zhTW)
• Dynamic Acceleration Colors: Accel bar can now show green for accelerating, red for decelerating
• Custom Ability Colors: User-configurable colors for all ability bars with brightness dimming
• Hidden Bar Gap Collapsing: When ability bars are hidden, remaining bars reposition to eliminate gaps

Changed

• Removed Legacy UI.lua: Completed migration to new View layer architecture
• Removed AceAddon-3.0: Unused library removed, reducing addon size
• Removed Deprecated API Fallbacks: GetSpellCharges/GetSpellCooldown fallbacks removed (12.0+ only)

Fixed

• Ability bar colors now properly use custom colors from settings
• Container height now dynamically adjusts based on visible bars

[1.3.0] - 2026-01-03

Changed

• Architecture Refactor: Complete restructure to Logic/Bridge/View layers
  • View Layer (View/init.lua): All UI frame creation and rendering
  • Bridge Layer (Bridge/): API calls, event handling, and command execution
  • Logic Layer (Logic/): Pure calculation functions for speed, acceleration, color, visibility
• FenCore Integration: Delegate core utilities to FenCore domains
  • FenCore.Math.Clamp for value clamping
  • FenCore.Secrets for Midnight secret value handling (IsSecret, SafeCompare, SafeToString)
  • FenCore.Charges.CalculateAll for charge bar state calculations
  • FenCore.Cooldowns.Calculate for cooldown bar state
  • FenCore.Charges.AdvanceAnimation / FenCore.Cooldowns.AdvanceAnimation for smooth fill animations
• Settings Compatibility: Settings now support both legacy FlightsimUI and new FlightsimView
• Error Handling: Improved error handling in Executor.FullUpdate with safe Result unwrapping

Fixed

• Animation state properly tracks recharging index locally
• Cooldown display correctly uses isOnCooldown instead of inverted isReady

[1.0.4] - 2025-12-23

Changed

• System upgrade: added StyLua formatting, standalone localization, and unit tests. Added comprehensive Busted test suite for core utility functions.

[1.0.3] - 2025-12-19

Added

• CurseForge Metadata: Added ## X-License: GPL-3.0 to .toc file
• Cursor Commands: Added .cursor/commands/ with GitHub workflow templates

Changed

• License: Updated LICENSE file formatting

[1.0.2] - 2025-12-19

Fixed

• Mode Transition Crash: Fixed a crash occurring when changing flight modes via abilities.
  • Removed deprecated global GetSpellInfo fallback in favor of C_Spell.GetSpellInfo.
• Error Resilience: Added pcall guards to visibility and update logic to ensure stability during sensitive flight mode transitions.

Changed

• Steady Flight Support: Flightsim now explicitly detects Steady Flight mode and disables the HUD to avoid cluttering the UI when not skyriding.

[1.0.1] - 2025-12-13

Fixed

• Midnight (12.0) compatibility: Fixed "attempt to compare a secret value" errors in combat
  • Added issecretvalue() detection for secret API return values
  • Ability bars now hide gracefully when spell APIs return secret values in combat
  • Skipped aura API calls during combat to prevent ADDON_ACTION_BLOCKED warnings
• Wrapped all ability bar logic to skip processing when APIs are restricted

Changed

• Updated interface version to 120001 (Midnight beta)

[1.0.0] - 2025-12-12

First official release!

[0.1.1] - 2025-12-12

Added

• Druid Flight Form support: addon now displays correctly when druids use Travel Form for skyriding
• CurseForge automatic packaging via GitHub webhook integration
• .pkgmeta configuration for CurseForge packager

Fixed

• Fixed visibility detection for druids in Flight Form (IsMounted() returns false for shapeshifts)
• Fixed OnUpdate quick-exit optimization to not hide frame for druids in Flight Form
• Fixed 3-5 second delay before HUD appeared on mount
  • Added UPDATE_SHAPESHIFT_FORMS event for instant druid form detection
  • Reduced hidden-state polling from 5s to 0.5s for faster fallback response

[0.1.0] - 2025-12-12

Initial release.

Added

• Speed bar with color gradient (red -> green based on speed)
• Acceleration bar (thin bar below speed)
• Sustainable speed marker (configurable position, width, opacity)
• Ability cooldown bars:
  • Surge Forward (6 charges, blue)
  • Second Wind (3 charges, purple)
  • Whirling Surge (30s cooldown, cyan)
• Auto-dimming: Second Wind dims when Surge Forward is at max charges
• Per-ability bar toggles in Settings
• Blizzard Settings panel integration
• Slash commands (/fs, /flightsim)
• Automatic show/hide based on skyriding state
• Defensive API wrappers for Midnight beta compatibility
• Performance optimizations:
  • Adaptive throttling (20Hz flying, 0.2Hz hidden)
  • Table reuse to avoid per-frame allocations
  • Frame-level caching for skyriding detection