# Changelog

## [Unreleased] — changes since v1.8.9-preview

### Architecture
- Break Application::getInstance() singleton from GameHandler via GameServices struct
- EntityController refactoring (SOLID decomposition)
- Extract 8 domain handler classes from GameHandler
- Replace 3,300-line switch with dispatch table
- Multi-platform Docker build system (Linux, macOS arm64/x86_64, Windows cross-compilation)

### Bug Fixes (v1.8.2–v1.8.9)
- Fix VkTexture ownsSampler_ flag after move/destroy (prevented double-free)
- Fix unsigned underflow in Warden PE section loading (buffer overflow on malformed modules)
- Add bounds checks to Warden readLE32/readLE16 (out-of-bounds on untrusted PE data)
- Fix undefined behavior: SDL_BUTTON(0) computed 1 << -1 (negative shift)
- Fix BigNum::toHex/toDecimal null dereference on OpenSSL allocation failure
- Remove duplicate zone weather entry silently overwriting Dustwallow Marsh
- Fix LLVM apt repo codename (jammy→noble) in macOS Docker build
- Add missing mkdir in Linux Docker build script
- Clamp player percentage stats (block/dodge/parry/crit) to prevent NaN from corrupted packets
- Guard fsPath underflow in tryLoadPngOverride

### Code Quality (v1.8.2–v1.8.9)
- 30+ named constants replacing magic numbers across game, rendering, and pipeline code
- 55+ why-comments documenting WoW protocol quirks, format specifics, and design rationale
- 8 DRY extractions (findOnUseSpellId, createFallbackTextures, finalizeSampler,
  renderClassRestriction/renderRaceRestriction, and more)
- Scope macOS -undefined dynamic_lookup linker flag to wowee target only
- Replace goto patterns with structured control flow (do/while(false), lambdas)
- Zero out GameServices in Application::shutdown to prevent dangling pointers

---

## [v1.8.1-preview] — 2026-03-23

### Performance
- Eliminate ~70 unnecessary sqrt ops per frame; constexpr reciprocals and cache optimizations
- Skip bone animation for LOD3 models; frustum-cull water surfaces
- Eliminate per-frame heap allocations in M2 renderer
- Convert entity/skill/DBC/warden maps to unordered_map; fix 3x contacts scan
- Eliminate double map lookups and dynamic_cast in render loops
- Use second GPU queue for parallel texture/buffer uploads
- Time-budget tile finalization to prevent 1+ second main-loop stalls
- Add Vulkan pipeline cache persistence for faster startup

### Bug Fixes
- Fix spline parsing with expansion context; preload DBC caches at world entry
- Fix NPC/player attack animation to use weapon-appropriate anim ID
- Fix equipment visibility and follow-target run speed
- Fix inspect (packed GUID) and client-side auto-walk for follow
- Fix mail money uint64, other-player cape textures, zone toast dedup, TCP_NODELAY
- Guard spline point loop against unsigned underflow; guard hexDecode/stoi/stof
- Fix infinite recursion in toLowerInPlace and operator precedence bugs
- Fix 3D audio coords for PLAY_OBJECT_SOUND; correct melee swing sound paths
- Prevent Vulkan sampler exhaustion crash; skip pipeline cache on NVIDIA
- Skip FSR3 frame gen on non-AMD GPUs to prevent driver crash
- Fix chest GO interaction (send GAMEOBJ_USE+LOOT together)
- Restore WMO wall collision threshold; fix off-screen bag positions
- Guard texture log dedup sets with mutex for thread safety
- Fix lua_pcall return check in ACTIONBAR_PAGE_CHANGED

### Features
- Render equipment on other players (helmets, weapons, belts, wrists, shoulders)
- Target frame right-click context menu
- Crafting sounds and Create All button
- Server-synced bag sort
- Log GPU vendor/name at init

### Security
- Add path traversal rejection and packet length validation

### Code Quality
- Packet API: add readPackedGuid, writePackedGuid, writeFloat, getRemainingSize,
  hasRemaining, hasData, skipAll (replacing 1300+ verbose expressions)
- GameHandler helpers: isInWorld, isPreWotlk, guidToUnitId, lookupName,
  getUnitByGuid, fireAddonEvent, withSoundManager
- Dispatch table: registerHandler, registerSkipHandler, registerWorldHandler,
  registerErrorHandler (replacing 120+ lambda wrappers)
- Shared ui_colors.hpp with named constants replacing 200+ inline color literals
- Promote 50+ static const arrays to constexpr across audio/core/rendering/UI
- Deduplicate class name/color functions, enchantment cache, item-set DBC keys
- Extract settings tabs, GameHandler::update() phases, loadWeaponM2 into methods
- Remove 12 duplicate dispatch registrations and C-style casts
- Extract toHexString, toLowerInPlace, duration formatting, Lua return helpers