The action bar's inline Spell.dbc loader had a broken field index lookup:
operator[] on the layout map would silently insert 0 if 'Name' wasn't a
key, causing all names to be read from field 0 (the spell ID). Also the
once-only 'attempted' flag meant if assetMgr wasn't ready, it never retried.
Replace the duplicated broken DBC loading in the action bar and buff bar
with SpellbookScreen::lookupSpellName(), which reuses the spellbook's
already-correct loading (expansion layout + WotLK fallback). Remove the
now-unused actionSpellNames/actionSpellDbAttempted/actionSpellDbLoaded fields.
- audio_engine.cpp: cache key was based on vector pointer address, not
content — cache never hit since each asset load produces a new
allocation. Replace with FNV-1a over head+tail bytes + size, giving
correct content-based identity at O(1) cost. Add 256-entry cap with
eviction to prevent unbounded growth over long sessions.
- game_handler.hpp/cpp, spellbook_screen, game_screen: knownSpells was
a std::vector with O(n) std::find lookups scattered across packet
handlers and UI code. Switch to std::unordered_set for O(1) insert,
erase, and membership checks. Update all push_back/erase-remove/find
call sites to use set operations.
Only SkillLine category 7 (Class) gets its own tab, giving the 3 spec tabs
(e.g. Discipline/Holy/Shadow for Priest). Weapon skills, racials, professions,
and utility spells all go into the General tab.
Left-click on action bar slots now casts spells/uses items instead of starting a drag. Right-click-drag rearranges slots. Spells can be dragged from the spellbook directly onto the action bar, replacing the old "Assign to" button row.
- Fix white hair: always override M2 type-6 texture with DBC hair texture when available
- Fix vendor sell: add sellPrice to ItemDef/ItemTemplateRow, use directly instead of empty cache
- Fix empty loot: skip loot window when corpse has no items and no gold
- Revamp spellbook (P key): tabbed UI (General/Active/Passive), spell icons from SpellIcon.dbc, rank text
- Clean up action bar: only auto-populate Attack and Hearthstone, rest assigned via spellbook
- Add talent placeholder (N key): 3-tab window with level/talent point display
- Fix ffplay cleanup: non-blocking waitpid with SIGKILL fallback to prevent orphaned audio processes
- Fix pre-existing getQualityColor visibility for loot window rendering
- Add spellbook screen (P key) with Spell.dbc name lookup and action bar assignment
- Default Attack and Hearthstone spells available in single player
- Fix WMO floor clipping (gryphon roost) by tightening ceiling rejection threshold
- Darken ocean water, increase wave motion and opacity
- Add M2 model distance fade-in to prevent pop-in
- Reposition chat window, add slash/enter key focus
- Remove debug key commands (keep only F1 perf HUD, N minimap)
- Performance: return chat history by const ref, use deque for O(1) pop_front
