2nd arg "canOpen" for IsItemOpenable

removed IsItemOpenableByID
turtle wow injects a bad version of print
2026-11-11 04:17:38 +00:00 · 2026-05-28 23:26:04 -05:00 · 2026-05-28 16:01:17 -05:00 · 2026-05-28 15:30:44 -05:00 · 2026-05-28 15:21:40 -05:00 · 2026-05-28 14:37:43 -05:00
33 changed files with 3145 additions and 164 deletions
@@ -45,3 +45,4 @@ jobs:
            ClassicAPI-Bundle-${{ github.ref_name }}.zip
            ClassicAPI-AddOnOnly-${{ github.ref_name }}.zip
            ClassicAPI-${{ github.ref_name }}/ClassicAPI.dll
+          generate_release_notes: true
@@ -27,3 +27,4 @@ Util\TimedCallback.lua
 Util\EquipmentManager.lua
 Util\PlayerUtil.lua
 Util\SlashCommandsRegistry.lua
+Util\LinkUtil.lua
@@ -110,7 +110,7 @@ PLAYER_FACTION_COLORS =
 { 
 	[0] = PLAYER_FACTION_COLOR_HORDE,
 	[1] = PLAYER_FACTION_COLOR_ALLIANCE,
-};-- Quest
+};

 WOW_PROJECT_MAINLINE = 1;
 WOW_PROJECT_CLASSIC = 2;
@@ -62,7 +62,10 @@ LinkTypes = {
 LinkUtil = {};

 function LinkUtil.FormatLink(linkType, linkDisplayText, ...)
-	local linkFormatTable = { string.format("|H%s", linkType), ... };
+	local linkFormatTable = { string.format("|H%s", linkType) };
+	for i = 1, arg.n do
+		linkFormatTable[i + 1] = arg[i];
+	end
 	local returnLink = table.concat(linkFormatTable, ":");
 	if linkDisplayText then
 		return returnLink .. string.format("|h%s|h", linkDisplayText);
@@ -17,12 +17,6 @@
 --     Secure-Templates system, so the protective wrappers in 3.3.5
 --     reduce to a plain pcall.
 --
-- Skipping if print is already defined keeps this file safe to load
-- alongside any other DLL or addon that might inject its own print.
-
-if type(print) == "function" then
-    return
-end

 ----------------------------------------------------------------------------
 -- tostringall: convert every vararg to a string, preserving count.
@@ -27,7 +27,12 @@ set(TINYCBOR_SOURCES

 add_library(${PROJECT_NAME} SHARED ${SOURCES} ${HEADERS} ${TINYCBOR_SOURCES})

-set(CLASSICAPI_VERSION_VALUE 1)
+# Dev-build sentinel — represents "newer than every plausible
+# release". Encoded as v9999.99.99 = 9999 * 10000 + 99 * 100 + 99 =
+# 99,999,999. Picked so addon-side feature gates of the form
+# `CLASSIC_API_VERSION >= X` always pass during local development;
+# CI release builds overwrite it via `-DCLASSICAPI_TAG=vX.Y.Z`.
+set(CLASSICAPI_VERSION_VALUE 99999999)

 set(CLASSICAPI_TAG
    ""
@@ -23,26 +23,29 @@ Full per-function reference: **[docs/API.md](docs/API.md)**.
 | [Class](docs/API.md#class) | `FillLocalizedClassList` |
 | [Combat](docs/API.md#combat) | `InCombatLockdown` |
 | [CVar](docs/API.md#cvar) | `C_CVar.GetCVarBool` |
-| [Container](docs/API.md#container) | `C_Container.GetContainerItemDurability`, `C_Container.GetContainerItemID`, `C_Container.GetContainerItemRepairCost`, `C_Container.GetContainerNumFreeSlots`, `C_Container.GetItemCooldown`, `C_Container.MoveItem`, `C_Container.PlayerHasHearthstone`, `C_Container.SwapItems`, `C_Container.UseHearthstone`, `GetItemCooldown` |
+| [Container](docs/API.md#container) | `C_Container.GetContainerItemCharges`, `C_Container.GetContainerItemDurability`, `C_Container.GetContainerItemID`, `C_Container.GetContainerItemRepairCost`, `C_Container.GetContainerNumFreeSlots`, `C_Container.GetItemCooldown`, `C_Container.IsContainerItemOpenable`, `C_Container.MoveItem`, `C_Container.PlayerHasHearthstone`, `C_Container.SwapItems`, `C_Container.UseHearthstone`, `GetItemCooldown` |
 | EncodingUtil | `C_EncodingUtil.CompressString`, `C_EncodingUtil.DecompressString`, `C_EncodingUtil.EncodeBase64`, `C_EncodingUtil.DecodeBase64`, `C_EncodingUtil.EncodeHex`, `C_EncodingUtil.DecodeHex`, `C_EncodingUtil.SerializeJSON`, `C_EncodingUtil.DeserializeJSON`, `C_EncodingUtil.SerializeCBOR`, `C_EncodingUtil.DeserializeCBOR` |
 | [EquipmentSet](docs/API.md#equipmentset) | `C_EquipmentSet.CanUseEquipmentSets`, `C_EquipmentSet.ClearIgnoredSlotsForSave`, `C_EquipmentSet.CreateEquipmentSet`, `C_EquipmentSet.DeleteEquipmentSet`, `C_EquipmentSet.EquipmentSetContainsLockedItems`, `C_EquipmentSet.GetEquipmentSetID`, `C_EquipmentSet.GetEquipmentSetIDs`, `C_EquipmentSet.GetEquipmentSetInfo`, `C_EquipmentSet.GetIgnoredSlots`, `C_EquipmentSet.GetItemIDs`, `C_EquipmentSet.GetItemLocations`, `C_EquipmentSet.GetNumEquipmentSets`, `C_EquipmentSet.IgnoreSlotForSave`, `C_EquipmentSet.IsSlotIgnoredForSave`, `C_EquipmentSet.ModifyEquipmentSet`, `C_EquipmentSet.SaveEquipmentSet`, `C_EquipmentSet.UnignoreSlotForSave`, `C_EquipmentSet.UseEquipmentSet` (sets persist to `WTF\Account\...\ClassicAPI_EquipmentSets.txt`) |
 | [Events](docs/API.md#events) | `C_EventUtils.IsEventValid` |
 | [Expansion](docs/API.md#expansion) | `ClassicExpansionAtLeast`, `ClassicExpansionAtMost`, `GetClassicExpansionLevel` |
 | [Faction](docs/API.md#faction) | `C_Reputation.GetFactionDataByIndex`, `C_Reputation.GetFactionStandings`, `C_Reputation.GetLastStandingChange`, `C_Reputation.GetWatchedFactionData`, `C_Reputation.SetWatchedFactionByID`, `GetFactionIDByIndex`, `GetFactionInfoByID`, `GetFactionParentID` |
+| [Focus](docs/API.md#focus) | `ClearFocus`, `FocusUnit` |
 | [FriendList](docs/API.md#friendlist) | `C_FriendList.IsWhoQueryPending`, `C_FriendList.SendWhoQueryByName` |
 | [Gossip](docs/API.md#gossip) | `C_GossipInfo.CloseGossip`, `C_GossipInfo.GetActiveQuests`, `C_GossipInfo.GetAvailableQuests`, `C_GossipInfo.GetNumActiveQuests`, `C_GossipInfo.GetNumAvailableQuests`, `C_GossipInfo.GetNumOptions`, `C_GossipInfo.GetOptions`, `C_GossipInfo.GetText`, `C_GossipInfo.SelectActiveQuest`, `C_GossipInfo.SelectAvailableQuest`, `C_GossipInfo.SelectOption`, `C_GossipInfo.SelectOptionByIndex` |
 | [GameTooltip](docs/API.md#gametooltip) | `GameTooltip:GetGameObject`, `GameTooltip:GetItem`, `GameTooltip:GetOwner`, `GameTooltip:GetSpell`, `GameTooltip:GetUnitGUID`, `GameTooltip:HasGameObject`, `GameTooltip:HasItem`, `GameTooltip:HasSpell`, `GameTooltip:HasUnit`, `GameTooltip:SetEquipmentSet`, `GameTooltip:SetInventoryItemByID`, `GameTooltip:SetItemByID`, `GameTooltip:SetSpellByID`, `GameTooltip:SetTalentByID`, `GameTooltip:SetUnitAura` |
 | [Hooks](docs/API.md#hooks) | `hooksecurefunc` |
 | [Input](docs/API.md#input) | `IsLeftAltKeyDown`, `IsLeftControlKeyDown`, `IsLeftShiftKeyDown`, `IsModifierKeyDown`, `IsRightAltKeyDown`, `IsRightControlKeyDown`, `IsRightShiftKeyDown` |
 | [Instance](docs/API.md#instance) | `GetInstanceInfo` |
-| [Item](docs/API.md#item) | `C_Item.DoesItemExist`, `C_Item.DoesItemExistByID`, `C_Item.EquipItemByName`, `C_Item.GetCurrentItemLevel`, `C_Item.GetDetailedItemLevelInfo`, `C_Item.GetItemCount`, `C_Item.GetItemFamily`, `C_Item.GetItemGUID`, `C_Item.GetItemIcon`, `C_Item.GetItemIconByID`, `C_Item.GetItemID`, `C_Item.GetItemInfoInstant`, `C_Item.GetItemInventoryType`, `C_Item.GetItemInventoryTypeByID`, `C_Item.GetItemLink`, `C_Item.GetItemLocation`, `C_Item.GetItemMaxStackSize`, `C_Item.GetItemMaxStackSizeByID`, `C_Item.GetItemName`, `C_Item.GetItemNameByID`, `C_Item.GetItemQuality`, `C_Item.GetItemQualityByID`, `C_Item.GetItemSellPrice`, `C_Item.GetItemSellPriceByID`, `C_Item.GetItemSetID`, `C_Item.GetItemSetIDByID`, `C_Item.GetItemSetInfo`, `C_Item.GetItemSpell`, `C_Item.GetWeaponEnchantInfo`, `C_Item.IsBound`, `C_Item.IsEquippableItem`, `C_Item.IsEquippedItem`, `C_Item.IsItemDataCached`, `C_Item.IsItemDataCachedByID`, `C_Item.IsLocked`, `C_Item.LockItem`, `C_Item.LockItemByGUID`, `C_Item.UnlockAllItems`, `C_Item.UnlockItem`, `C_Item.RequestLoadItemData`, `C_Item.RequestLoadItemDataByID`, `C_Item.UseItemByName`, `GetAuctionItemID`, `GetAuctionSellItemID`, `GetAverageItemLevel`, `GetCraftReagentItemID`, `GetInboxItemID`, `GetInventoryItemDurability`, `GetInventoryItemID`, `GetInventoryItemsForSlot`, `GetInventoryItemRepairCost`, `GetItemIcon`, `GetLootRollItemID`, `GetLootSlotItemID`, `GetMerchantItemID`, `GetQuestItemID`, `GetQuestLogItemID`, `GetTradePlayerItemID`, `GetTradeSkillItemID`, `GetTradeSkillReagentItemID`, `GetTradeTargetItemID`, `OffhandHasWeapon` |
+| [Item](docs/API.md#item) | `C_Item.DoesItemExist`, `C_Item.DoesItemExistByID`, `C_Item.EquipItemByName`, `C_Item.GetCurrentItemLevel`, `C_Item.GetDetailedItemLevelInfo`, `C_Item.GetItemCount`, `C_Item.GetItemFamily`, `C_Item.GetItemGUID`, `C_Item.GetItemIcon`, `C_Item.GetItemIconByID`, `C_Item.GetItemID`, `C_Item.GetItemInfoInstant`, `C_Item.GetItemInventoryType`, `C_Item.GetItemInventoryTypeByID`, `C_Item.GetItemLink`, `C_Item.GetItemLocation`, `C_Item.GetItemMaxStackSize`, `C_Item.GetItemMaxStackSizeByID`, `C_Item.GetItemName`, `C_Item.GetItemNameByID`, `C_Item.GetItemQuality`, `C_Item.GetItemQualityByID`, `C_Item.GetItemSellPrice`, `C_Item.GetItemSellPriceByID`, `C_Item.GetItemSetID`, `C_Item.GetItemSetIDByID`, `C_Item.GetItemSetInfo`, `C_Item.GetItemSpell`, `C_Item.GetItemUniqueness`, `C_Item.GetItemUniquenessByID`, `C_Item.GetStackCount`, `C_Item.GetWeaponEnchantInfo`, `C_Item.IsBound`, `C_Item.IsEquippableItem`, `C_Item.IsEquippedItem`, `C_Item.IsItemDataCached`, `C_Item.IsItemDataCachedByID`, `C_Item.IsItemOpenable`, `C_Item.IsLocked`, `C_Item.LockItem`, `C_Item.LockItemByGUID`, `C_Item.UnlockAllItems`, `C_Item.UnlockItem`, `C_Item.RequestLoadItemData`, `C_Item.RequestLoadItemDataByID`, `C_Item.UseItemByName`, `GetAuctionItemID`, `GetAuctionSellItemID`, `GetAverageItemLevel`, `GetCraftReagentItemID`, `GetInboxItemID`, `GetInventoryItemDurability`, `GetInventoryItemID`, `GetInventoryItemsForSlot`, `GetInventoryItemRepairCost`, `GetItemIcon`, `GetLootRollItemID`, `GetLootSlotItemID`, `GetMerchantItemID`, `GetQuestItemID`, `GetQuestLogItemID`, `GetTradePlayerItemID`, `GetTradeSkillItemID`, `GetTradeSkillReagentItemID`, `GetTradeTargetItemID`, `OffhandHasWeapon` |
 | [Macros](docs/API.md#macros) | `GetMacroSpell` |
 | [Map](docs/API.md#map) | `C_Map.GetBestMapForUnit` |
 | [MerchantFrame](docs/API.md#merchantframe) | `C_MerchantFrame.GetBuybackItemID`, `C_MerchantFrame.GetItemInfo`, `C_MerchantFrame.GetNumJunkItems`, `C_MerchantFrame.IsMerchantItemRefundable`, `C_MerchantFrame.IsSellAllJunkEnabled`, `C_MerchantFrame.SellAllJunkItems` |
+| [NamePlate](docs/API.md#nameplate) | `C_NamePlate.GetNamePlateForGUID`, `C_NamePlate.GetNamePlateForUnit`, `C_NamePlate.GetNamePlateGUIDs`, `C_NamePlate.GetNamePlates` |
 | [NameCache](docs/API.md#namecache) | `C_CreatureInfo.GetCreatureID`, `C_PlayerCache.GetPlayerInfoByName`, `C_PlayerCache.IsEnabled`, `C_PlayerCache.IsScanEnabled`, `C_PlayerCache.RememberPlayer`, `C_PlayerCache.SetEnabled`, `C_PlayerCache.SetScanEnabled`, `C_PlayerInfo.GUIDIsCreature`, `C_PlayerInfo.GUIDIsGameObject`, `C_PlayerInfo.GUIDIsPet`, `C_PlayerInfo.GUIDIsPlayer`, `GetPlayerInfoByGUID` |
 | [Quest](docs/API.md#quest) | `C_QuestLog.GetQuestIDForLogIndex`, `C_QuestLog.GetTitleForQuestID`, `C_QuestLog.IsOnQuest`, `C_QuestLog.IsQuestDataCachedByID`, `C_QuestLog.IsUnitOnQuest`, `C_QuestLog.RequestLoadQuestByID`, `GetQuestLogLeaderBoardID` |
-| [Spell](docs/API.md#spell) | `C_Spell.CancelSpellByID`, `C_Spell.GetSpellCooldown`, `C_Spell.GetSpellDescription`, `C_Spell.GetSpellInfo`, `C_Spell.GetSpellLink`, `C_Spell.GetSpellName`, `C_Spell.GetSpellReagents`, `C_Spell.GetSpellTexture`, `C_Spell.IsCurrentSpell`, `C_Spell.IsSpellHarmful`, `C_Spell.IsSpellHelpful`, `C_Spell.IsSpellPassive`, `C_Spell.IsSpellUsable`, `C_SpellBook.GetCurrentLevelSpells`, `C_SpellBook.GetSpellLevelLearned`, `C_SpellBook.GetSpellSkillLine`, `CancelSpellByName`, `CastSpellNoToggle`, `FindSpellBookSlotByID`, `GetCraftSpellID`, `GetSpellInfo`, `GetSpellLink`, `GetSpellSchool`, `IsHarmfulSpell`, `IsHelpfulSpell`, `IsPassiveSpell`, `IsPlayerSpell`, `IsSpellKnown`, `IsUsableSpell` |
-| [State](docs/API.md#state) | `CancelShapeshiftForm`, `Dismount`, `GetMirrorTimerInfo`, `GetMirrorTimerProgress`, `GetShapeshiftFormID`, `IsAssistingRitual`, `IsFalling`, `IsMounted`, `IsStealthed`, `IsSwimming` |
+| [Spell](docs/API.md#spell) | `C_Spell.CancelSpellByID`, `C_Spell.DoesSpellExist`, `C_Spell.GetSchoolString`, `C_Spell.GetSpellCooldown`, `C_Spell.GetSpellDescription`, `C_Spell.GetSpellInfo`, `C_Spell.GetSpellLink`, `C_Spell.GetSpellName`, `C_Spell.GetSpellReagents`, `C_Spell.GetSpellSubtext`, `C_Spell.GetSpellTexture`, `C_Spell.IsAutoAttackSpell`, `C_Spell.IsCurrentSpell`, `C_Spell.IsRangedAutoAttackSpell`, `C_Spell.IsSelfBuff`, `C_Spell.IsSpellHarmful`, `C_Spell.IsSpellHelpful`, `C_Spell.IsSpellPassive`, `C_Spell.IsSpellUsable`, `C_Spell.SpellHasRange`, `CancelSpellByName`, `CastSpellNoToggle`, `GetCraftSpellID`, `GetSpellInfo`, `GetSpellLink`, `GetSpellSchool`, `IsHarmfulSpell`, `IsHelpfulSpell`, `IsPassiveSpell`, `IsPlayerSpell`, `IsSpellKnown`, `IsUsableSpell`, `SpellHasRange` |
+| [SpellBook](docs/API.md#spellbook) | `C_SpellBook.GetCurrentLevelSpells`, `C_SpellBook.GetSpellLevelLearned`, `C_SpellBook.GetSpellSkillLine`, `C_SpellBook.IsAutoAttackSpellBookItem`, `C_SpellBook.IsRangedAutoAttackSpellBookItem`, `FindSpellBookSlotByID` |
+| [State](docs/API.md#state) | `CancelShapeshiftForm`, `Dismount`, `GetMirrorTimerInfo`, `GetMirrorTimerProgress`, `GetShapeshiftFormID`, `IsAssistingRitual`, `IsFalling`, `IsInGroup`, `IsInRaid`, `IsMounted`, `IsStealthed`, `IsSwimming` |
 | [Table](docs/API.md#table) | `table.wipe` |
 | [Talent](docs/API.md#talent) | `GetTalentIDByIndex`, `GetTalentSpellID` |
 | [Time](docs/API.md#time) | `C_DateAndTime.AdjustTimeByDays`, `C_DateAndTime.AdjustTimeByMinutes`, `C_DateAndTime.CompareCalendarTime`, `C_DateAndTime.GetCalendarTimeFromEpoch`, `C_DateAndTime.GetCurrentCalendarTime`, `C_DateAndTime.GetSecondsUntilDailyReset`, `C_DateAndTime.GetServerTimeLocal`, `C_Timer.After`, `C_Timer.NewTicker`, `C_Timer.NewTimer`, `GetServerTime` |
@@ -63,7 +66,7 @@ the glue state because GlueXML had no way to reach them otherwise.

 | Group | Calls |
 |-------|-------|
-| CharacterOrder | `GetSavedCharacterOrder`, `SetSavedCharacterOrder` (persist to `WTF\Account\...\ClassicAPI.txt`) |
+| [CharacterList](docs/API.md#characterlist) | `GetSavedCharacterOrder`, `SetSavedCharacterOrder` (persist to `WTF\Account\...\ClassicAPI.txt`) |
 | CVar | `GetCVar`, `SetCVar`, `RegisterCVar`, `GetCVarDefault`, `C_CVar.GetCVarBool` (storage is process-global — writes from glue are visible in-world and vice versa) |
 | Script | `RunScript` (compile and run a Lua chunk in the glue state's globals — useful for slash-command-style helpers in GlueXML) |

@@ -93,6 +96,10 @@ functions, just behavior the stock 1.12 engine didn't have. See the
 | `HEARTHSTONE_BOUND` | *(none)* |
 | `ITEM_DATA_LOAD_RESULT` | `itemID, success` |
 | `MODIFIER_STATE_CHANGED` | `keyName, down` |
+| `NAME_PLATE_CREATED` | `nameplateFrame` |
+| `NAME_PLATE_UNIT_ADDED` | `unitToken` ("nameplateN") |
+| `NAME_PLATE_UNIT_REMOVED` | `unitToken` ("nameplateN") |
+| `PLAYER_FOCUS_CHANGED` | *(none)* |
 | `PLAYER_STARTED_LOOKING` | *(none)* |
 | `PLAYER_STOPPED_LOOKING` | *(none)* |
 | `PLAYER_STARTED_MOVING` | *(none)* |
@@ -115,6 +122,13 @@ functions, just behavior the stock 1.12 engine didn't have. See the
 | Addon security | `Enum.AddOnSecurityStatus.{Secure,Insecure,Banned,NotAvailable}` |
 | Power type | `Enum.PowerType.{HealthCost,None,Mana,Rage,Focus,Energy,Happiness}` |

+### Unit tokens
+
+| Token | Resolves to |
+|-------|-------------|
+| `nameplate1`..`nameplateN` | Unit behind the Nth visible nameplate, in creation-order. Works with every `UnitX` function — `UnitName`, `UnitGUID`, `UnitClass`, `UnitHealth`, etc. Suffix chains (`nameplate1target`, `nameplate1targettarget`) compose. See [NamePlate / Unit tokens](docs/API.md#unit-tokens-nameplaten). |
+| `focus` / `focustarget` | Sticky target set via [`FocusUnit`](docs/API.md#focusunitunit), cleared via [`ClearFocus`](docs/API.md#clearfocus). Same `UnitX` coverage as `nameplateN`. Fires [`PLAYER_FOCUS_CHANGED`](docs/API.md#player_focus_changed-event) on transition. See [Focus](docs/API.md#focus). |
+
 ## Installation

 Use [VanillaFixes](https://github.com/hannesmann/vanillafixes) to load the
@@ -16,6 +16,7 @@
 #include "MinHook.h"
 #include "Offsets.h"
 #include "event/Custom.h"
+#include "nameplate/Walk.h"
 #include "player/NameCache.h"

 static Game::FrameScript_Initialize_t FrameScript_Initialize_o = nullptr;
@@ -37,6 +38,15 @@ static bool __fastcall FrameScript_Initialize_h() {
    // table is rebuilt at a fresh allocation; the old slots are stale.
    Event::Custom::PrepareForReload();

+    // Clear the nameplate diff state so currently-visible plates
+    // refire CREATED and UNIT_ADDED on the next tick — re-presents
+    // them to the freshly reloaded UI, matching modern WoW. The
+    // wrappers themselves now live in the engine's own registry
+    // (via `FrameScript_Object::ScriptRegister`), which the engine
+    // tears down and rebuilds across the Lua reset — no per-module
+    // cache to clear here.
+    NamePlate::Events::PrepareForReload();
+
    // Persist the name cache before the engine starts tearing down.
    // This hook fires on both `/reload` and `/logout` (the engine
    // re-initializes Lua state in both cases), giving us a clean
@@ -200,6 +200,30 @@ enum Offsets {
    // Registers a single global Lua function. __fastcall(name, func).
    FUN_FRAMESCRIPT_REGISTER_FUNCTION = 0x00704120,

+    // `FrameScript_Object::ScriptRegister(this, name)` — `__thiscall`,
+    // `this` = a `CFrameScriptObject *`. On first call (when `this+0x04`
+    // is zero) builds a Lua wrapper table `{[0] = lightuserdata(this)}`
+    // with `_G["__framescript_meta"]` as metatable, `luaL_ref`s it into
+    // the registry, stores the refkey at `this+0x08`. Always increments
+    // `this+0x04` (the Lua-side refcount). Optional `name` argument
+    // installs `_G[name] = wrapper` for engine-named frames.
+    //
+    // We call this in `PushNamePlateFrame` so the engine and our own
+    // C_NamePlate getters operate on the **same** wrapper table —
+    // every push through `lua_rawgeti(REGISTRY, this+0x08)` (the
+    // canonical engine path) lands on the same Lua object pfUI
+    // received in `NAME_PLATE_CREATED`, so addon-set fields
+    // (`plate.nameplate = decoratedButton`) survive engine-side
+    // re-fetches. Earlier note in `Info.cpp` warned about pinning the
+    // refcount; for pool-managed nameplates the engine never
+    // un-registers them anyway, so the pin is benign.
+    FUN_FRAMESCRIPT_OBJECT_SCRIPT_REGISTER = 0x00701BD0,
+
+    // `this+0x04` Lua refcount, incremented by `ScriptRegister`. We
+    // read it as a "has the engine ever exposed this CObject to Lua"
+    // probe — equivalent to checking `this+0x08 > 0` but more direct.
+    OFF_COBJECT_LUA_REFCOUNT = 0x04,
+
    // Direct cvar lookup — `__fastcall(const char *name) → CVar* | NULL`.
    // Hash-table by-name lookup over the CVar registry; same call
    // `Script_GetCVar` makes internally before the engine wraps the
@@ -281,6 +305,28 @@ enum Offsets {
    // input it's the right primitive.
    FUN_TOKEN_TO_GUID = 0x00515970,

+    // `SStrCmpI(a, b, n)` — Storm's case-insensitive memcmp-style
+    // comparator. **`int __stdcall(const char *a, const char *b, int n)`**
+    // — the function ends with `ret 0xc`, so the callee pops the
+    // 3-arg stack frame. Declaring it as `__cdecl` and calling makes
+    // MSVC emit a redundant `add esp, 12` post-call, drifting ESP
+    // upward by 12 per call and corrupting the caller's stack frame
+    // — manifested as a deep-Lua crash whose `L` pointer landed in
+    // `.text`. Returns 0 when the first `n` characters match
+    // (ignoring case) or both strings end before `n`.
+    FUN_SSTR_CMP_I = 0x0064A4C0,
+
+    // UNIT_FIELD_TARGET within `m_objectFields` — 64-bit GUID at byte
+    // offsets +0x28 (lo) / +0x2C (hi). Verified by disassembling
+    // `FUN_TOKEN_TO_GUID`'s suffix walker at `0x00515A1C-A2C`:
+    // `mov eax, [obj + 0x110]; mov edi, [eax + 0x28]; mov ebx, [eax + 0x2c]`
+    // — reads the target GUID to chain `targettarget`-style tokens.
+    // Distinct from the higher field offsets in the
+    // `OFF_UNIT_FIELD_*` block; UNIT_FIELD_TARGET is one of the few
+    // 1.12 offsets that matches the CMaNGOS-documented vanilla
+    // layout.
+    OFF_UNIT_FIELD_TARGET = 0x28,
+
    // Party / raid roster counts and the party GUID array referenced
    // in the `FUN_TOKEN_TO_GUID` dispatch comment above. Used by
    // `UnitTokenFromGUID` to cap its candidate iteration — solo
@@ -847,6 +893,14 @@ enum Offsets {
    // descriptor bytes for a worn-and-bound item.
    OFF_DESCRIPTOR_FLAGS = 0x3C,
    ITEM_FLAG_SOULBOUND = 0x01,
+    // Bit 2 — instance is "unlocked", i.e. the lock referenced by
+    // `ItemStats.LockID` has been opened (rogue Pick Lock, key item,
+    // etc.). For unlockable items, the engine gates the
+    // `<Right Click to Open>` tooltip on this bit: a fresh lockbox
+    // has it clear (priest sees no openable affordance), a picked
+    // lockbox has it set. Items with `LockID == 0` (clams, simple
+    // sacks) never need the bit.
+    ITEM_FLAG_UNLOCKED = 0x04,

    // Client-side "in-transaction" lock — set when the engine puts an
    // item on the cursor / mail-attaches it / trade-attaches it, cleared
@@ -1014,7 +1068,33 @@ enum Offsets {
    OFF_ITEMSTATS_NAME = 0x08,
    OFF_ITEMSTATS_DISPLAY_INFO_ID = 0x18,
    OFF_ITEMSTATS_QUALITY = 0x1C,    // u32 — 0=Poor … 5=Legendary
+    // `m_flags` — item-class flags bitfield. Bits we read:
+    //   `ITEMSTATS_FLAG_OPENABLE` (`0x4`, bit 2): freely right-click-
+    //     openable container (sack, clam, simple chest, quest box).
+    //     The tooltip line `<Right Click to Open>` (`ITEM_OPENABLE`
+    //     string) renders for items with this bit set, gated on the
+    //     player's lock skill when the item also carries a non-zero
+    //     LockID. Same bit modern WoW's `C_Item.IsItemOpenable`
+    //     surfaces.
+    //   Other documented bits (`0x1` = BIND_ON_PICKUP, `0x2` = CONJURED,
+    //     `0x10` = LOOTABLE, `0x200` = WRAPPER, etc.) live in the same
+    //     field but we don't read them here. Add named constants as
+    //     consumers materialize.
+    // Reader at `0x0052E323` (the tooltip-builder's openable branch in
+    // `FUN_0052B650`) does `(ItemStats[+0x20] & 0x4)` against this
+    // field; verified by checking the field offset matches the
+    // 5-DWORD-per-row layout `puVar4[8]` resolves to in the decompile.
+    OFF_ITEMSTATS_FLAGS = 0x20,
+    ITEMSTATS_FLAG_OPENABLE = 0x4,
    OFF_ITEMSTATS_SELL_PRICE = 0x28,
+    // `m_lockID` — references `Lock.dbc`. Zero means "no lock"; any
+    // nonzero value gates the openable interaction on the player
+    // successfully unlocking the item (instance flag bit 2 in
+    // `ITEM_FIELD_FLAGS`). Same field the tooltip builder reads as
+    // `ItemStats[+0x1AC]` (puVar4[0x6b]) when deciding whether the
+    // `<Right Click to Open>` line should require the lock to be
+    // picked first.
+    OFF_ITEMSTATS_LOCK_ID = 0x1AC,
    OFF_ITEMSTATS_INVENTORY_TYPE = 0x2C,
    OFF_ITEMSTATS_ITEM_LEVEL = 0x38, // u32 — base ilvl from ItemSparse
    // `m_stackable` — max stack size for this item type (1 for non-
@@ -1082,6 +1162,14 @@ enum Offsets {
    ITEMSTATS_SPELL_SLOT_COUNT = 5,
    ITEM_SPELLTRIGGER_ON_USE = 0,

+    // `ItemStats_C.m_maxCount` — max number of this item the player can
+    // hold in inventory at once. `0` = unlimited, `1` = unique, higher
+    // values are caps like "5x bandage type". Vanilla 1.12 doesn't have
+    // modern "unique-equipped category" semantics; this is the only
+    // uniqueness signal the client has. Derived by summing struct
+    // members in VanillaHelpers's `ItemStats_C` definition.
+    OFF_ITEMSTATS_MAX_COUNT = 0x5C,
+
    // `Spell.dbc` `Name[9]` field at record +0x1E0 (9-locale string
    // array, indexed by `[VAR_LOCALE_INDEX]`). Used by `GetItemSpell`
    // to push the spell name half of its return.
@@ -2081,6 +2169,22 @@ enum Offsets {
    // to L->top → `add [ecx+8], 0x10` incr_top). `0x6F32B0` is
    // `lua_replace` (single TValue copy + decr_top).
    LUA_PUSH_VALUE = 0x6F3350,
+    // `luaL_ref(L, t)` — pops the top, stores it in the table at `t`
+    // at a freshly-allocated integer key, returns the key. Use with
+    // `LUA_REGISTRY_INDEX` to stash Lua values across C-side scopes;
+    // pair with `LUA_REF_UNREF` to release. Verified by decompiling
+    // `FUN_006f5310`: classic luaL_ref shape — nil-top early-out
+    // returning `LUA_REFNIL = -1`, FREELIST_REF chain pop (pushvalue +
+    // tonumber on table[0]), else objlen-based new slot, finally
+    // table[ref] = popped value.
+    LUA_REF_REF = 0x6F5310,
+    // `luaL_unref(L, t, ref)` — releases a ref previously returned
+    // by `luaL_ref`, freeing the slot for future allocations. Verified
+    // by decompiling `FUN_006f5400`: `ref >= 0` guard (skips
+    // `LUA_NOREF = -2` / `LUA_REFNIL = -1`), reads current FREELIST_REF
+    // head, writes it to `table[ref]`, then updates FREELIST_REF = ref
+    // — the canonical freelist-link operation.
+    LUA_REF_UNREF = 0x6F5400,
    LUA_PUSH_CCLOSURE = 0x6F3920,
    LUA_NEW_TABLE = 0x6F3C90,
    LUA_GET_TABLE = 0x6F3A40,     // (was 0x6F3EA0, which is lua_rawset)
@@ -0,0 +1,55 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Container.GetContainerItemCharges(containerIndex, slotIndex)` —
+// returns the `abs(SPELL_CHARGES[0])` value of the item in the
+// specified bag slot, or `nil` for empty slots and items that don't
+// carry a charge concept. Wands return their remaining cast count
+// (e.g. 50 → 49 → …); single-use items (Healthstone, Mana Gem,
+// Goblin Sapper Charge) return `1`.
+//
+// Modern equivalent: none — modern WoW exposes charges only through
+// tooltip text scanning. `C_Item.GetItemCount(includeBank, includeCharges)`
+// totals charges across every matching stack; this is the per-slot
+// reader.
+
+#include "Game.h"
+#include "item/Charges.h"
+#include "item/Location.h"
+
+namespace Container::Charges {
+
+namespace {
+
+int __fastcall Script_C_Container_GetContainerItemCharges(void *L) {
+    if (!Game::Lua::IsNumber(L, 1) || !Game::Lua::IsNumber(L, 2)) {
+        Game::Lua::Error(L,
+            "Usage: C_Container.GetContainerItemCharges(containerIndex, slotIndex)");
+        return 0;
+    }
+    const int bagID = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    const int slotIndex = static_cast<int>(Game::Lua::ToNumber(L, 2));
+    return Item::Charges::PushChargesForItem(
+        L, Item::Location::ResolveBag(L, bagID, slotIndex));
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Container", "GetContainerItemCharges",
+                                     &Script_C_Container_GetContainerItemCharges);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Container::Charges
@@ -0,0 +1,49 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Container.IsContainerItemOpenable(bag, slot)` — positional-arg
+// wrapper around `Item::Openable::PushIsItemOpenable`. Same chain
+// `C_Container.GetContainerItemDurability` and friends use:
+// `ResolveBag` → `GetItemBySlot`. Returns the
+// `(isOpenable, canOpen)` tuple — see [[item/Openable.h]].
+
+#include "Game.h"
+#include "item/Location.h"
+#include "item/Openable.h"
+
+namespace Container::Openable {
+
+namespace {
+
+int __fastcall Script_C_Container_IsContainerItemOpenable(void *L) {
+    if (!Game::Lua::IsNumber(L, 1) || !Game::Lua::IsNumber(L, 2)) {
+        Game::Lua::Error(L,
+            "Usage: C_Container.IsContainerItemOpenable(containerIndex, slotIndex)");
+        return 0;
+    }
+    const int bagID = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    const int slotIndex = static_cast<int>(Game::Lua::ToNumber(L, 2));
+    return Item::Openable::PushIsItemOpenable(
+        L, Item::Location::ResolveBag(L, bagID, slotIndex));
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Container", "IsContainerItemOpenable",
+                                     &Script_C_Container_IsContainerItemOpenable);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Container::Openable
@@ -0,0 +1,63 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#include "Game.h"
+#include "Offsets.h"
+
+#include <cstdint>
+
+namespace Group::Info {
+
+namespace {
+
+bool InRaid() {
+    return *reinterpret_cast<const int *>(
+               static_cast<uintptr_t>(Offsets::VAR_RAID_MEMBER_COUNT)) > 0;
+}
+
+bool InParty() {
+    auto *guids = reinterpret_cast<const uint64_t *>(
+        static_cast<uintptr_t>(Offsets::VAR_PARTY_GUIDS));
+    for (int i = 0; i < Offsets::PARTY_MAX_SLOTS; ++i) {
+        if (guids[i] != 0)
+            return true;
+    }
+    return false;
+}
+
+} // namespace
+
+// `IsInRaid()` — true iff the local player is in a raid group.
+// Modern signature takes an optional `groupType` (Home / Instance);
+// vanilla has no LFG/LFD instance-group concept, so we accept and
+// ignore the argument.
+static int __fastcall Script_IsInRaid(void *L) {
+    Game::Lua::PushBool(L, InRaid());
+    return 1;
+}
+
+// `IsInGroup()` — true iff the local player is in a party OR a raid.
+// Same `groupType` argument story as `IsInRaid`.
+static int __fastcall Script_IsInGroup(void *L) {
+    Game::Lua::PushBool(L, InRaid() || InParty());
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("IsInRaid", &Script_IsInRaid);
+    Game::Lua::RegisterGlobalFunction("IsInGroup", &Script_IsInGroup);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Group::Info
@@ -0,0 +1,39 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#include "Charges.h"
+
+#include "../Game.h"
+#include "../Offsets.h"
+
+#include <cstdlib>
+
+namespace Item::Charges {
+
+int PushChargesForItem(void *L, const uint8_t *item) {
+    if (item == nullptr)
+        return 0;
+    auto *descriptor = *reinterpret_cast<const uint8_t *const *>(
+        item + Offsets::OFF_ITEM_DESCRIPTOR);
+    if (descriptor == nullptr)
+        return 0;
+    const int32_t stack = static_cast<int32_t>(*reinterpret_cast<const uint32_t *>(
+        descriptor + Offsets::OFF_DESCRIPTOR_STACK_COUNT));
+    const int32_t rawCharges = *reinterpret_cast<const int32_t *>(
+        descriptor + Offsets::OFF_DESCRIPTOR_SPELL_CHARGES_0);
+    const int32_t usesPerItem = (rawCharges < 0) ? -rawCharges : 1;
+    Game::Lua::PushNumber(L, static_cast<double>(stack * usesPerItem));
+    return 1;
+}
+
+} // namespace Item::Charges
@@ -0,0 +1,44 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <cstdint>
+
+namespace Item::Charges {
+
+// Pushes the total uses available in this single slot — the
+// per-slot equivalent of `GetItemCount(_, _, includeCharges=true)`.
+// Returns `1` (pushed one value) on success, `0` (pushes nothing,
+// caller surfaces as `nil`) when the item is missing or the
+// descriptor is null.
+//
+// Math is `stack * usesPerItem` where `usesPerItem` follows
+// `Item::Count::GetUsesPerItem`:
+//   - `SPELL_CHARGES[0] >= 0` → `1` (no destroy-on-zero behavior;
+//     stack count alone reflects "how many uses").
+//   - `SPELL_CHARGES[0] < 0`  → `abs(value)` (consume-on-use items;
+//     wand at 50 has `-50` so each item contributes 50).
+//
+// Worked examples:
+//   - Wand at 50 charges (stack=1, raw=-50): `1 * 50 = 50`
+//   - Hearthstone     (stack=1, raw=0):   `1 * 1  = 1` (cooldown-
+//     only, no charges concept; we still surface "1 use").
+//   - Water stack of 20 (stack=20, raw=-1): `20 * 1 = 20`
+//   - Equipped sword  (stack=1, raw=0):    `1 * 1  = 1`
+//
+// Caller can `return PushChargesForItem(L, item);` to forward the
+// count directly.
+int PushChargesForItem(void *L, const uint8_t *item);
+
+} // namespace Item::Charges
@@ -0,0 +1,113 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Item.IsItemOpenable(itemLocation)` — backport of the modern WoW
+// accessor that says "right-clicking this item triggers an open/loot
+// interaction" (clams, sacks, simple chests, quest boxes, lockboxes).
+// Returns two values: `(isOpenable, canOpen)` — the first is the
+// item-type-intrinsic openable flag, the second is whether the
+// player can right-click *this specific instance* right now (lock
+// is gone or never existed).
+//
+// Vanilla 1.12's tooltip builder gates the `<Right Click to Open>`
+// string (`ITEM_OPENABLE`) on `ItemStats.Flags & 0x4` AND
+// (`LockID == 0` OR `ITEM_FIELD_FLAGS & 0x4`). We mirror both checks
+// — see `Offsets::ITEMSTATS_FLAG_OPENABLE`, `ITEMSTATS_LOCK_ID`, and
+// `ITEM_FLAG_UNLOCKED`.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "item/Data.h"
+#include "item/ID.h"
+#include "item/Location.h"
+#include "item/Openable.h"
+
+#include <cstdint>
+
+namespace Item::Openable {
+
+namespace {
+
+using GetItemRecord_t = const uint8_t *(__thiscall *)(void *cache, uint32_t itemID,
+                                                      const uint64_t *guid, void *callback,
+                                                      void *userData, int unused);
+
+const uint8_t *PeekItemRecord(uint32_t itemID) {
+    auto fn = reinterpret_cast<GetItemRecord_t>(Offsets::FUN_DBCACHE_ITEMSTATS_GET_RECORD);
+    auto *cache = reinterpret_cast<void *>(Offsets::VAR_ITEMDB_CACHE);
+    const uint64_t zeroGuid = 0;
+    return fn(cache, itemID, &zeroGuid, nullptr, nullptr, 0);
+}
+
+} // namespace
+
+namespace {
+
+// Reads `ITEM_FIELD_FLAGS` from the instance descriptor at +0x114.
+// Defaults to 0 if `cgItem` is null or the descriptor pointer hasn't
+// been populated yet.
+uint32_t InstanceFlags(const uint8_t *cgItem) {
+    if (cgItem == nullptr)
+        return 0;
+    auto *descriptor = *reinterpret_cast<const uint8_t *const *>(
+        cgItem + Offsets::OFF_ITEM_DESCRIPTOR);
+    if (descriptor == nullptr)
+        return 0;
+    return *reinterpret_cast<const uint32_t *>(
+        descriptor + Offsets::OFF_DESCRIPTOR_FLAGS);
+}
+
+} // namespace
+
+int PushIsItemOpenable(void *L, const uint8_t *cgItem) {
+    const int itemID = Item::ID::FromCGItem(cgItem);
+    if (itemID <= 0)
+        return 0;
+    const uint8_t *record = PeekItemRecord(static_cast<uint32_t>(itemID));
+    if (record == nullptr) {
+        Item::Data::WarmCache(static_cast<uint32_t>(itemID));
+        return 0;
+    }
+    const uint32_t typeFlags = *reinterpret_cast<const uint32_t *>(
+        record + Offsets::OFF_ITEMSTATS_FLAGS);
+    const uint32_t lockID = *reinterpret_cast<const uint32_t *>(
+        record + Offsets::OFF_ITEMSTATS_LOCK_ID);
+    const bool isOpenable = (typeFlags & Offsets::ITEMSTATS_FLAG_OPENABLE) != 0;
+    const uint32_t instFlags = InstanceFlags(cgItem);
+    const bool canOpen = isOpenable && (lockID == 0 ||
+                                        (instFlags & Offsets::ITEM_FLAG_UNLOCKED) != 0);
+    Game::Lua::PushBool(L, isOpenable);
+    Game::Lua::PushBool(L, canOpen);
+    return 2;
+}
+
+namespace {
+
+int __fastcall Script_C_Item_IsItemOpenable(void *L) {
+    if (!Item::Location::IsLocationArg(L, 1)) {
+        Game::Lua::Error(L, "Usage: C_Item.IsItemOpenable(itemLocation)");
+        return 0;
+    }
+    return PushIsItemOpenable(L, Item::Location::Resolve(L, 1));
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Item", "IsItemOpenable",
+                                     &Script_C_Item_IsItemOpenable);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace
+
+} // namespace Item::Openable
@@ -0,0 +1,37 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <cstdint>
+
+namespace Item::Openable {
+
+// Pushes two values for the openable check on a player-owned item
+// (`isOpenable, canOpen`), returning 2. The two semantics:
+//
+//   `isOpenable` — bool. The item type carries the openable flag
+//     (`ItemStats.Flags & 0x4` — clams, sacks, lockboxes, etc.).
+//   `canOpen`    — bool. The player can right-click this specific
+//     instance and trigger the open action right now. True for
+//     openable items with no lock (`LockID == 0`) or whose instance
+//     has been unlocked (`ITEM_FIELD_FLAGS & 0x4` — set after a
+//     rogue picks the lock, a key is used, etc.). False for fresh
+//     lockboxes a non-rogue is looking at.
+//
+// `cgItem` may be null (empty slot), in which case nothing is pushed
+// and 0 is returned (Lua sees nil for both returns). Uncached itemID
+// also returns 0 plus a background cache warm.
+int PushIsItemOpenable(void *L, const uint8_t *cgItem);
+
+} // namespace Item::Openable
@@ -0,0 +1,58 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Item.GetStackCount(itemLocation)` — current stack count for the
+// specific item slot. Reads `ITEM_FIELD_STACK_COUNT` directly off the
+// CGItem's m_objectFields descriptor — same field
+// `Script_GetContainerItemInfo` returns as `itemCount`. Distinct from
+// `C_Item.GetItemCount(itemID)`, which sums every stack of `itemID`
+// across the player's inventory.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "item/Location.h"
+
+#include <cstdint>
+
+namespace Item::StackCount {
+
+static int __fastcall Script_GetStackCount(void *L) {
+    if (!Item::Location::IsLocationArg(L, 1)) {
+        Game::Lua::PushNumber(L, 0.0);
+        return 1;
+    }
+    auto *item = Item::Location::Resolve(L, 1);
+    if (item == nullptr) {
+        Game::Lua::PushNumber(L, 0.0);
+        return 1;
+    }
+    auto *descriptor = *reinterpret_cast<const uint8_t *const *>(
+        item + Offsets::OFF_ITEM_DESCRIPTOR);
+    if (descriptor == nullptr) {
+        Game::Lua::PushNumber(L, 0.0);
+        return 1;
+    }
+    const int count = *reinterpret_cast<const int *>(
+        descriptor + Offsets::OFF_DESCRIPTOR_STACK_COUNT);
+    Game::Lua::PushNumber(L, static_cast<double>(count));
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Item", "GetStackCount",
+                                     &Script_GetStackCount);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Item::StackCount
@@ -64,12 +64,34 @@ constexpr int FIRST_BAG_CONTAINER_LINEAR = 19;
 // player invMgr — i.e. 1-based bag-0 slot S maps to linear 22+S.
 constexpr int BACKPACK_LINEAR_OFFSET = 22;

+// Main bank contents (bagID -1) live at linear slots 39..62 in the
+// player invMgr — i.e. 1-based bank slot S maps to linear 38+S.
+// Same encoding shape as the backpack (container is the player
+// itself), different base offset. Range valid only when the bank
+// window has been opened in the current session.
+constexpr int BANK_MAIN_LINEAR_OFFSET = 38;
+constexpr int BANK_MAIN_NUM_SLOTS = 24;
+
+// Bank bag containers occupy 1-based equipment slots 64..69 (linear
+// 63..68). Addressed by bagID 5..10 — bagID 5 = first bank bag.
+// Requires bank window open; otherwise the engine's CGContainer for
+// the bag is unsynced and `ResolveEquipmentSlot` returns null.
+constexpr int FIRST_BANK_BAG_EQ_SLOT = 64;
+constexpr int FIRST_BANK_BAG_ID = 5;
+constexpr int LAST_BANK_BAG_ID = 10;
+
 // (bagID, 1-based slot) → (containerGUID, engine linear slot). Returns
 // false for unequipped bags or out-of-range slots; does NOT validate
 // that the slot is occupied (caller checks separately).
 //
-//   bagID 0    → container = player, linear = BACKPACK_LINEAR_OFFSET + slot
-//   bagID 1..4 → container = equipped bag's CGContainer, linear = slot - 1
+//   bagID  0    → container = player, linear = 22 + slot (backpack)
+//   bagID  1..4 → container = equipped bag's CGContainer, linear = slot - 1
+//   bagID -1    → container = player, linear = 38 + slot (bank main)
+//   bagID  5..10 → container = bank bag's CGContainer, linear = slot - 1
+//
+// Bank-side encodings only resolve once the bank window has been
+// opened in the current session (the engine doesn't sync the bank
+// CGContainers or bank-slot inventory entries before then).
 bool EncodeBagSlot(int bagID, int slotInBag,
                   uint32_t *containerLo, uint32_t *containerHi,
                   uint32_t *linearSlot) {
@@ -94,6 +116,27 @@ bool EncodeBagSlot(int bagID, int slotInBag,
        *linearSlot = static_cast<uint32_t>(slotInBag - 1);
        return true;
    }
+    if (bagID == -1) {
+        if (slotInBag > BANK_MAIN_NUM_SLOTS)
+            return false;
+        void *player = ResolvePlayer();
+        if (player == nullptr)
+            return false;
+        if (!ReadGuid(player, containerLo, containerHi))
+            return false;
+        *linearSlot = static_cast<uint32_t>(BANK_MAIN_LINEAR_OFFSET + slotInBag);
+        return true;
+    }
+    if (bagID >= FIRST_BANK_BAG_ID && bagID <= LAST_BANK_BAG_ID) {
+        const uint8_t *bag = Item::Location::ResolveEquipmentSlot(
+            FIRST_BANK_BAG_EQ_SLOT + (bagID - FIRST_BANK_BAG_ID));
+        if (bag == nullptr)
+            return false;
+        if (!ReadGuid(bag, containerLo, containerHi))
+            return false;
+        *linearSlot = static_cast<uint32_t>(slotInBag - 1);
+        return true;
+    }
    return false;
 }

@@ -0,0 +1,112 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Item.GetItemUniqueness(itemLocation)` — uniqueness cap. Reads
+// `ItemStats_C.m_maxCount` from the item's cached record; that's the
+// only uniqueness signal vanilla's client carries. `1` = unique
+// ("Held In Off-hand" trinkets, special quest items, etc.); `0` =
+// unlimited; higher values cap the inventory count.
+//
+// Modern WoW returns a 3-tuple `(maxEquipped, category, equippedCount)`
+// keyed off the post-TBC category system (e.g. "Unique-Equipped:
+// Brewfest Mug"). Vanilla has no category system, so we surface
+// `m_maxCount` as the first return and leave the category nil and
+// equipped count `0` — matching modern's "field present but inapplicable"
+// convention.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "item/Data.h"
+#include "item/ID.h"
+#include "item/Location.h"
+
+#include <cstdint>
+
+namespace Item::Uniqueness {
+
+namespace {
+
+using GetItemRecord_t = const uint8_t *(__thiscall *)(void *cache, uint32_t itemID,
+                                                       const uint64_t *guid,
+                                                       void *callback, void *userData,
+                                                       int unused);
+
+const uint8_t *PeekItemRecord(uint32_t itemID) {
+    auto fn = reinterpret_cast<GetItemRecord_t>(
+        static_cast<uintptr_t>(Offsets::FUN_DBCACHE_ITEMSTATS_GET_RECORD));
+    auto *cache = reinterpret_cast<void *>(
+        static_cast<uintptr_t>(Offsets::VAR_ITEMDB_CACHE));
+    const uint64_t zeroGuid = 0;
+    return fn(cache, itemID, &zeroGuid, nullptr, nullptr, 0);
+}
+
+} // namespace
+
+// Pushes the 3-tuple `(maxAllowed, nil, 0)` derived from the
+// ItemStats_C record, or nil + early-return on cache miss.
+int PushFromItemID(void *L, uint32_t itemID) {
+    const uint8_t *record = PeekItemRecord(itemID);
+    if (record == nullptr) {
+        Item::Data::WarmCache(itemID);
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    const int maxCount = *reinterpret_cast<const int *>(
+        record + Offsets::OFF_ITEMSTATS_MAX_COUNT);
+    Game::Lua::PushNumber(L, static_cast<double>(maxCount));
+    Game::Lua::PushNil(L);              // category (vanilla has none)
+    Game::Lua::PushNumber(L, 0.0);      // equippedCount (not tracked)
+    return 3;
+}
+
+static int __fastcall Script_GetItemUniqueness(void *L) {
+    if (!Item::Location::IsLocationArg(L, 1)) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    auto *item = Item::Location::Resolve(L, 1);
+    if (item == nullptr) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    const int itemID = Item::ID::FromCGItem(item);
+    if (itemID <= 0) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    return PushFromItemID(L, static_cast<uint32_t>(itemID));
+}
+
+static int __fastcall Script_GetItemUniquenessByID(void *L) {
+    if (!Game::Lua::IsNumber(L, 1)) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    const int itemID = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    if (itemID <= 0) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    return PushFromItemID(L, static_cast<uint32_t>(itemID));
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Item", "GetItemUniqueness",
+                                     &Script_GetItemUniqueness);
+    Game::Lua::RegisterTableFunction("C_Item", "GetItemUniquenessByID",
+                                     &Script_GetItemUniquenessByID);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Item::Uniqueness
@@ -0,0 +1,253 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// Nameplate lifecycle events: NAME_PLATE_CREATED, NAME_PLATE_UNIT_ADDED,
+// NAME_PLATE_UNIT_REMOVED.
+//
+// Per-frame poll: walk visible CGUnits with allocated nameplates, diff
+// against last frame's snapshot, fire events on real transitions only.
+// The engine's internal hide/show cycle (z-order rebuilds, anchor
+// changes, ~7 callers of `FUN_00608A10` that transiently zero `+0xE60`)
+// is absorbed because we only compare with the previous *frame's*
+// state, not every transient `unit + 0xE60` write.
+//
+// Payload shape (matches modern WoW exactly):
+// - `NAME_PLATE_CREATED` — `arg1` is the nameplate **Frame**. The
+//   engine's printf-style dispatcher (`FUN_FIRE_EVENT`) only knows
+//   `%s`/`%d`/`%u`/`%f` format codes with no "push Lua value" option,
+//   so we route this event through a pre-set path: save current
+//   `_G.arg1`, set it to the frame, fire with empty format
+//   (dispatcher leaves `_G.arg<N>` alone when no codes are parsed),
+//   restore.
+// - `NAME_PLATE_UNIT_ADDED` / `_REMOVED` — `arg1` is the
+//   `"nameplateN"` unit token (formatted from the plate's index in
+//   `g_orderedGUIDs` at fire time). The token resolves to the unit
+//   via the `nameplateN`-aware token resolver in `unit/TokenExtensions.cpp`
+//   — addons can pass it straight to `UnitName`, `UnitGUID`, etc.,
+//   or to `GetNamePlateForUnit` for the frame.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "event/Custom.h"
+#include "nameplate/Walk.h"
+#include "tick/WorldTick.h"
+
+#include <algorithm>
+#include <cstdint>
+#include <cstdio>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+namespace NamePlate::Events {
+
+namespace {
+
+constexpr const char *kEventCreated = "NAME_PLATE_CREATED";
+constexpr const char *kEventUnitAdded = "NAME_PLATE_UNIT_ADDED";
+constexpr const char *kEventUnitRemoved = "NAME_PLATE_UNIT_REMOVED";
+
+const Event::Custom::AutoReserve _r1{kEventCreated};
+const Event::Custom::AutoReserve _r2{kEventUnitAdded};
+const Event::Custom::AutoReserve _r3{kEventUnitRemoved};
+
+// Previous tick's snapshot — GUID → nameplate-frame pointer for each
+// nameplated unit. Compared against the next tick's walk to compute
+// ADDED/REMOVED diffs.
+std::unordered_map<uint64_t, const void *> g_lastTickPlates;
+
+// Scratch map reused each tick, swapped into `g_lastTickPlates` at
+// the end. File-static so we don't pay the constructor/destructor
+// cycle every frame — `clear()` keeps the existing bucket capacity.
+std::unordered_map<uint64_t, const void *> g_currentTickPlates;
+
+// Frame pointers we've ever surfaced as nameplate plates. First
+// sighting fires NAME_PLATE_CREATED; same pointer reappearing (pool
+// reuse) doesn't refire.
+//
+// Bounded by the engine's CGNamePlateFrame freelist high-water mark:
+// `FUN_006087F0` first checks the global freelist head at
+// `DAT_00c4d920` and recycles any waiting frame before falling back
+// to `SMemAlloc(0x518)`. So the set grows only up to the peak
+// simultaneous-visible-plate count for the session — typically
+// <80 even in AV-scale scenes (matching the `reserve(64)` below) —
+// then tops out as pool reuse covers all subsequent shows.
+std::unordered_set<const void *> g_seenPlates;
+
+// Ordered list of currently-visible nameplate GUIDs, in
+// creation-order. Append on UNIT_ADDED, erase on UNIT_REMOVED. Backs
+// the `nameplateN` unit-token resolver in `unit/TokenExtensions.cpp`. Order
+// matches modern WoW semantics: stable for the lifetime of each
+// plate, gaps when middle plates vanish (until the next REMOVED
+// shifts later entries down).
+std::vector<uint64_t> g_orderedGUIDs;
+
+// Fire `eventName` with a pre-formatted string as `arg1`. The engine
+// dispatcher's `%s` format code pushes the C string into `_G.arg1`
+// as a Lua string — no escaping concerns for our own input
+// (`"nameplateN"`).
+void FireWithString(const char *eventName, const char *value) {
+    if (value == nullptr)
+        return;
+    const int slot = Event::Custom::Lookup(eventName);
+    if (slot < 0)
+        return;
+    Event::Custom::Fire(slot, "%s", value);
+}
+
+// Format a 1-based nameplate index as `"nameplateN"` for ADDED /
+// REMOVED event payloads. Buffer should be at least 24 bytes — 9
+// for the prefix, up to 10 digits for the index, room for null.
+// Returns `buf` for convenient inline use.
+const char *FormatNamePlateToken(char *buf, size_t bufSize, int oneBasedIndex) {
+    std::snprintf(buf, bufSize, "nameplate%d", oneBasedIndex);
+    return buf;
+}
+
+// Fire `eventName` with the nameplate `Frame` set as `_G.arg1`.
+// `FUN_FIRE_EVENT`'s format-string parser only handles primitive
+// types, but it only mutates `_G.arg<N>` for codes it actually
+// parses. With an empty format we pre-set `_G.arg1` and the
+// dispatcher leaves it alone. Restore the previous value after
+// fire so we don't leak our frame into unrelated global state.
+//
+// Lua-stack-clean: stack depth on entry == stack depth on exit.
+using LuaRefRef_t = int(__fastcall *)(void *L, int t);
+using LuaRefUnref_t = void(__fastcall *)(void *L, int t, int ref);
+using LuaRawGetI_t = void(__fastcall *)(void *L, int t, int n);
+
+void FireWithFrame(const char *eventName, void *frame) {
+    if (frame == nullptr)
+        return;
+    const int slot = Event::Custom::Lookup(eventName);
+    if (slot < 0)
+        return;
+
+    void *L = Game::Lua::State();
+    if (L == nullptr)
+        return;
+
+    auto refRef = reinterpret_cast<LuaRefRef_t>(
+        static_cast<uintptr_t>(Offsets::LUA_REF_REF));
+    auto refUnref = reinterpret_cast<LuaRefUnref_t>(
+        static_cast<uintptr_t>(Offsets::LUA_REF_UNREF));
+    auto rawgeti = reinterpret_cast<LuaRawGetI_t>(
+        Offsets::FUN_FRAMESCRIPT_PUSH_OBJECT);
+
+    // Save current `_G.arg1` to the registry.
+    Game::Lua::PushString(L, "arg1");
+    Game::Lua::GetTable(L, Game::Lua::GLOBALS_INDEX);
+    const int savedRef = refRef(L, Game::Lua::REGISTRY_INDEX);
+
+    // Set `_G.arg1 = frame`.
+    Game::Lua::PushString(L, "arg1");
+    NamePlate::Info::PushNamePlateFrame(L, frame);
+    Game::Lua::SetTable(L, Game::Lua::GLOBALS_INDEX);
+
+    // Fire — empty format, so the dispatcher doesn't touch `arg1`.
+    Event::Custom::Fire(slot, "");
+
+    // Restore previous `_G.arg1` from the saved registry ref.
+    Game::Lua::PushString(L, "arg1");
+    rawgeti(L, Game::Lua::REGISTRY_INDEX, savedRef);
+    Game::Lua::SetTable(L, Game::Lua::GLOBALS_INDEX);
+    refUnref(L, Game::Lua::REGISTRY_INDEX, savedRef);
+}
+
+void OnWorldTick() {
+    g_currentTickPlates.clear();
+    g_currentTickPlates.reserve(64); // typical visible-nameplate ceiling
+    NamePlate::Walk::ForEachNamePlatedUnit(
+        [](const uint8_t *, const uint8_t *nameplate,
+           const uint8_t *instance) {
+            const uint64_t guid = *reinterpret_cast<const uint64_t *>(instance);
+            if (guid == 0)
+                return;
+            g_currentTickPlates.emplace(guid, nameplate);
+        });
+
+    // Fire CREATED (with the Frame as arg1) for never-before-seen
+    // frame pointers; ADDED (with `"nameplateN"` token as arg1) for
+    // GUIDs not in last tick's snapshot. New entries are appended to
+    // the ordered list *before* firing so the token resolves to the
+    // newly-added plate during the event handler.
+    for (const auto &kv : g_currentTickPlates) {
+        if (g_seenPlates.insert(kv.second).second)
+            FireWithFrame(kEventCreated, const_cast<void *>(kv.second));
+        if (g_lastTickPlates.find(kv.first) == g_lastTickPlates.end()) {
+            g_orderedGUIDs.push_back(kv.first);
+            char tokenBuf[24];
+            FireWithString(kEventUnitAdded,
+                FormatNamePlateToken(tokenBuf, sizeof tokenBuf,
+                                     static_cast<int>(g_orderedGUIDs.size())));
+        }
+    }
+
+    // Fire REMOVED for GUIDs in last tick's snapshot but not current.
+    // We compute the token from the position *before* erasing so the
+    // event payload reflects the slot the unit just vacated; the
+    // handler can still resolve the token to the unit via
+    // `g_orderedGUIDs[slot]` during dispatch. Later plates shift down
+    // when we erase — matches modern semantics.
+    for (const auto &kv : g_lastTickPlates) {
+        if (g_currentTickPlates.find(kv.first) == g_currentTickPlates.end()) {
+            auto it = std::find(g_orderedGUIDs.begin(), g_orderedGUIDs.end(),
+                                kv.first);
+            if (it == g_orderedGUIDs.end())
+                continue;
+            const int oneBased = static_cast<int>(it - g_orderedGUIDs.begin()) + 1;
+            char tokenBuf[24];
+            FireWithString(kEventUnitRemoved,
+                FormatNamePlateToken(tokenBuf, sizeof tokenBuf, oneBased));
+            g_orderedGUIDs.erase(it);
+        }
+    }
+
+    g_lastTickPlates.swap(g_currentTickPlates);
+}
+
+} // namespace
+
+static const Tick::WorldTick::AutoSubscribe _tickSub{&OnWorldTick};
+
+// Called from `FrameScript_Initialize_h` ahead of the engine's Lua
+// teardown. Clears the diff state alongside `NamePlate::Info`'s
+// wrapper-cache reset so that on the first post-reload tick every
+// currently-visible plate refires `NAME_PLATE_CREATED` and
+// `NAME_PLATE_UNIT_ADDED`. Without this, addons that decorate via
+// CREATED (pfUI: builds its overlay button per-pointer) never see
+// the existing plates after a `/reload` — `g_seenPlates` would
+// suppress every refire, and the freshly-built wrapper would lack
+// the addon's `.nameplate` field.
+//
+// `g_orderedGUIDs` is also cleared so the post-reload token indices
+// start at `nameplate1` again, matching the order plates re-fire in.
+void PrepareForReload() {
+    g_seenPlates.clear();
+    g_lastTickPlates.clear();
+    g_orderedGUIDs.clear();
+}
+
+// Exposed via `nameplate/Walk.h` so the `nameplateN` token resolver
+// in `unit/TokenExtensions.cpp` can map an index to a GUID without seeing
+// the internal vector.
+uint64_t GetGUIDByIndex(int oneBased) {
+    if (oneBased <= 0)
+        return 0;
+    const size_t idx = static_cast<size_t>(oneBased - 1);
+    if (idx >= g_orderedGUIDs.size())
+        return 0;
+    return g_orderedGUIDs[idx];
+}
+
+} // namespace NamePlate::Events
@@ -0,0 +1,265 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_NamePlate.GetNamePlates()` — returns nameplate Frame objects,
+// matching modern WoW's signature. Two paths because vanilla has two
+// kinds of nameplates:
+//
+// 1. **Addon-created** (pfUI, TidyPlates, etc.) — already registered
+//    with Lua via `CreateFrame`. Their Lua-registry ref-key sits at
+//    `+0x08`; we push `registry[refKey]` to return the cached
+//    wrapper. Identity stable across calls.
+//
+// 2. **Default vanilla nameplates** — created internally without ever
+//    calling `CreateFrame`, so `+0x08` is 0. We build a fresh wrapper
+//    table per call: `{[0] = lightuserdata(frame)}` with the global
+//    `__framescript_meta` metatable. Methods work
+//    (`:GetWidth()` / `:GetAlpha()` / etc.) but the wrapper isn't
+//    cached engine-side — calling `GetNamePlates()` again returns a
+//    different table for the same frame. Don't compare wrappers by
+//    identity, and don't cache them across the unit going out of
+//    range (the underlying frame may be freed).
+//
+// We deliberately don't call the engine's frame-registration helper
+// (`FUN_00701BD0`) for the unregistered case — it increments a Lua
+// refcount on the frame that's never decremented, pinning the frame
+// in memory.
+//
+// `C_NamePlate.GetNamePlateGUIDs()` — companion returning the GUID
+// strings of the same set of units, regardless of registration
+// state. Cheapest enumeration when an addon only needs the GUIDs.
+//
+// Vanilla 1.12 stores each unit's nameplate pointer at `CGUnit + 0xE60`
+// (verified via `FUN_006086E0`'s "ensure nameplate exists" path). The
+// nameplate also caches the unit's GUID at `+0x4E8` for back-lookup.
+// There's no central "active nameplates" list — the engine maintains
+// per-unit pointers updated by per-unit state-change handlers.
+//
+// To enumerate, we walk the local-player-anchored object hash table
+// (`player + 0x1C` = bucket array, `player + 0x24` = mask). Each
+// bucket header stores the link-field offset at byte 0 and the
+// chain-head pointer at byte 8 — Storm's intrusive-hash pattern.
+// Filter by `TYPEMASK_UNIT` (`flags & 0x08` at `*(entry+8) + 8`) and
+// check `+0xE60` for a non-null nameplate pointer.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "guid/Guid.h"
+#include "nameplate/Walk.h"
+
+#include <cstdint>
+
+namespace NamePlate::Info {
+
+namespace {
+
+using NamePlate::Walk::ForEachNamePlatedUnit;
+using NamePlate::Walk::kOffUnitNamePlate;
+
+using LuaRawGetI_t = void(__fastcall *)(void *L, int idx, int n);
+using ScriptRegister_t = void(__fastcall *)(void *this_, void *edx_unused,
+                                              const char *name);
+using TokenToGUID_t = uint64_t(__fastcall *)(const char *token);
+using ResolveByGUID_t = void *(__fastcall *)(int type, const char *debugName,
+                                              uint32_t guidLo, uint32_t guidHi,
+                                              int priority);
+
+} // namespace
+
+static int __fastcall Script_GetNamePlates(void *L) {
+    Game::Lua::NewTable(L);
+    int nextIndex = 1;
+    ForEachNamePlatedUnit(
+        [L, &nextIndex](const uint8_t *, const uint8_t *nameplate,
+                         const uint8_t *) {
+            Game::Lua::PushNumber(L, static_cast<double>(nextIndex++));
+            // Shared helper validates refkey freshness (defensive vs.
+            // stale-across-reload) and falls back to a fresh wrapper
+            // if the registry slot doesn't actually hold the frame
+            // table any more.
+            PushNamePlateFrame(L, const_cast<uint8_t *>(nameplate));
+            Game::Lua::SetTable(L, -3);
+        });
+    return 1;
+}
+
+static int __fastcall Script_GetNamePlateGUIDs(void *L) {
+    Game::Lua::NewTable(L);
+    int nextIndex = 1;
+    ForEachNamePlatedUnit(
+        [L, &nextIndex](const uint8_t *, const uint8_t *,
+                         const uint8_t *instance) {
+            const uint64_t guid = *reinterpret_cast<const uint64_t *>(instance);
+            if (guid == 0)
+                return;
+            char buf[Guid::STRING_SIZE];
+            Game::Lua::PushNumber(L, static_cast<double>(nextIndex++));
+            Game::Lua::PushString(L,
+                Guid::FormatAsString(guid, buf, sizeof buf));
+            Game::Lua::SetTable(L, -3);
+        });
+    return 1;
+}
+
+// Exported via `nameplate/Walk.h` so `Events.cpp` can reuse the same
+// frame-push path. Internal callers (Script_GetNamePlates etc.) call
+// it through the unqualified name (they live in the same namespace).
+//
+// Delegate wrapper construction to the engine's own
+// `FrameScript_Object::ScriptRegister`. First call for a never-seen
+// nameplate builds a `{[0] = lightuserdata}` table with the
+// framescript metatable, `luaL_ref`s it into the registry, and
+// writes the refkey to `nameplate + 0x08` (`OFF_COBJECT_LUA_REGISTRY_REF`).
+// Subsequent calls find a populated refkey and just rawgeti.
+//
+// Why delegate instead of building our own wrapper:
+//
+// - **Single source of truth.** Every code path that pushes this
+//   frame — ours via this function, addons' `CreateFrame("Type",
+//   "name", plate)` extracting the parent, the engine's own internal
+//   pushers — funnels through `rawgeti(REGISTRY, plate+0x08)` and
+//   gets the same Lua table. Earlier "build our own wrapper +
+//   `luaL_ref` it" approach kept a side cache, but pfUI's
+//   `CreateFrame("Button", "name", parent)` inside `NAME_PLATE_CREATED`
+//   ends up causing the engine to register the parent itself —
+//   the engine's wrapper diverges from ours, and later
+//   `GetNamePlateForUnit` calls return the engine's bare wrapper
+//   instead of our decorated one. Addon fields on the wrapper
+//   (`plate.nameplate = styledButton`) disappear from the API's
+//   perspective even though they still exist on the orphaned
+//   table.
+//
+// - **Refcount-pinning is benign here.** `ScriptRegister`
+//   unconditionally increments `nameplate + 0x04`, which normally
+//   keeps the engine from GC-ing the CObject. Nameplates are
+//   pool-managed and never destroyed during a session, so pinning
+//   doesn't actually leak anything. We call `ScriptRegister` at
+//   most once per nameplate pointer (gated by `refKey <= 0`), so
+//   the refcount tops out at one increment per pool slot.
+//
+// Defensive fallback: if the registry slot exists but isn't a table
+// any more (some other code freed it), we re-register. This shouldn't
+// happen in practice — engines only unref on frame destruction —
+// but a stale type check keeps callers from ever seeing a non-table.
+void PushNamePlateFrame(void *L, void *nameplate) {
+    auto rawgeti = reinterpret_cast<LuaRawGetI_t>(
+        Offsets::FUN_FRAMESCRIPT_PUSH_OBJECT);
+    auto scriptRegister = reinterpret_cast<ScriptRegister_t>(
+        static_cast<uintptr_t>(Offsets::FUN_FRAMESCRIPT_OBJECT_SCRIPT_REGISTER));
+
+    int refKey = *reinterpret_cast<const int *>(
+        static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
+    if (refKey <= 0) {
+        scriptRegister(nameplate, nullptr, nullptr);
+        refKey = *reinterpret_cast<const int *>(
+            static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
+    }
+
+    rawgeti(L, Game::Lua::REGISTRY_INDEX, refKey);
+    if (Game::Lua::Type(L, -1) == Game::Lua::TYPE_TABLE)
+        return;
+    Game::Lua::SetTop(L, -2);
+
+    // Slot got freed somewhere — re-register to rebuild a fresh
+    // wrapper and slot. Zero the refcount so `ScriptRegister`
+    // re-enters its build branch.
+    *reinterpret_cast<int *>(
+        static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REFCOUNT) = 0;
+    scriptRegister(nameplate, nullptr, nullptr);
+    refKey = *reinterpret_cast<const int *>(
+        static_cast<uint8_t *>(nameplate) + Offsets::OFF_COBJECT_LUA_REGISTRY_REF);
+    rawgeti(L, Game::Lua::REGISTRY_INDEX, refKey);
+}
+
+// GUID → nameplate Frame pushed on stack. Pushes nil if the GUID
+// doesn't resolve to a visible CGUnit, or the unit has no allocated
+// nameplate.
+static void PushNamePlateForGUID(void *L, uint64_t guid) {
+    if (guid == 0) {
+        Game::Lua::PushNil(L);
+        return;
+    }
+    auto resolve = reinterpret_cast<ResolveByGUID_t>(
+        static_cast<uintptr_t>(Offsets::FUN_OBJECT_RESOLVE_BY_GUID));
+    auto *unit = static_cast<uint8_t *>(
+        resolve(Offsets::OBJ_TYPE_UNIT, "NamePlate",
+                static_cast<uint32_t>(guid),
+                static_cast<uint32_t>(guid >> 32),
+                0x172));
+    if (unit == nullptr) {
+        Game::Lua::PushNil(L);
+        return;
+    }
+    auto *nameplate = *reinterpret_cast<uint8_t *const *>(
+        unit + kOffUnitNamePlate);
+    if (nameplate == nullptr) {
+        Game::Lua::PushNil(L);
+        return;
+    }
+    PushNamePlateFrame(L, nameplate);
+}
+
+// `C_NamePlate.GetNamePlateForUnit(unitToken)` — returns the
+// nameplate Frame for the given unit, or `nil` if the unit has no
+// nameplate (out of range, hidden, etc.). Resolves the token to a
+// GUID via the engine's `FUN_TOKEN_TO_GUID` so distant party/raid
+// members can be queried.
+static int __fastcall Script_GetNamePlateForUnit(void *L) {
+    if (!Game::Lua::IsString(L, 1)) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    const char *token = Game::Lua::ToString(L, 1);
+    if (token == nullptr) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    auto tokenToGuid = reinterpret_cast<TokenToGUID_t>(
+        static_cast<uintptr_t>(Offsets::FUN_TOKEN_TO_GUID));
+    PushNamePlateForGUID(L, tokenToGuid(token));
+    return 1;
+}
+
+// `C_NamePlate.GetNamePlateForGUID(guidString)` — same as
+// `GetNamePlateForUnit` but takes a `"0xHHHHHHHHHHHHHHHH"` GUID
+// string. Useful for handling the `NAME_PLATE_UNIT_ADDED` /
+// `_REMOVED` events whose payload is a GUID, not a unit token.
+static int __fastcall Script_GetNamePlateForGUID(void *L) {
+    if (!Game::Lua::IsString(L, 1)) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    const char *guidStr = Game::Lua::ToString(L, 1);
+    uint64_t guid = 0;
+    if (guidStr == nullptr || !Guid::Parse(guidStr, &guid)) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    PushNamePlateForGUID(L, guid);
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_NamePlate", "GetNamePlates",
+                                     &Script_GetNamePlates);
+    Game::Lua::RegisterTableFunction("C_NamePlate", "GetNamePlateGUIDs",
+                                     &Script_GetNamePlateGUIDs);
+    Game::Lua::RegisterTableFunction("C_NamePlate", "GetNamePlateForUnit",
+                                     &Script_GetNamePlateForUnit);
+    Game::Lua::RegisterTableFunction("C_NamePlate", "GetNamePlateForGUID",
+                                     &Script_GetNamePlateForGUID);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace NamePlate::Info
@@ -0,0 +1,121 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <cstdint>
+
+// Shared nameplate enumeration — walks the local-player-anchored
+// object hash table for visible `TYPEMASK_UNIT` entries and invokes
+// `emit(unit, nameplate, instance)` for each unit that currently has
+// an allocated nameplate (`unit + 0xE60` non-null).
+//
+// Header-only template — used by both the Lua-facing accessors in
+// `nameplate/Info.cpp` and the per-tick differ in `nameplate/Events.cpp`.
+
+namespace NamePlate::Info {
+
+// Pushes the nameplate Frame at `nameplate` onto the Lua stack.
+// Returns the engine's canonical wrapper table — the same one
+// `rawgeti(REGISTRY, nameplate + 0x08)` resolves to anywhere else
+// in the engine — so addon-set fields (pfUI: `plate.nameplate`)
+// survive every roundtrip through our API. Defined in `Info.cpp`.
+void PushNamePlateFrame(void *L, void *nameplate);
+
+} // namespace NamePlate::Info
+
+namespace NamePlate::Events {
+
+// Returns the GUID currently bound to `nameplateN` (1-based, matching
+// the modern Lua token form). `0` means no nameplate at that index.
+// Backed by the per-tick UNIT_ADDED / UNIT_REMOVED diff in
+// `Events.cpp` — order is creation-order (append on ADDED, erase on
+// REMOVED), stable within a frame.
+uint64_t GetGUIDByIndex(int oneBased);
+
+// Clears the per-tick diff state (seen pointers, last tick's
+// snapshot, ordered GUID list) so the post-`/reload` tick refires
+// CREATED + UNIT_ADDED for every currently-visible plate. Called
+// from `FrameScript_Initialize_h` alongside the wrapper-cache reset
+// in `NamePlate::Info::PrepareForReload`.
+void PrepareForReload();
+
+} // namespace NamePlate::Events
+
+namespace NamePlate::Walk {
+
+// `0x00B41414` is a player-related global that overlays multiple
+// sub-objects at different offsets. We read the object-hash-table
+// fields at `+0x1C` (bucket array) and `+0x24` (bucket mask) — that
+// sub-struct is safe to walk for any unit the engine knows about.
+// **Do not feed this pointer to inventory routines** (`GetItemBySlot`
+// etc.); the CGPlayer_C inventory manager lives at a different
+// offset (`+0x1D38`) and is sourced via `ResolveUnitToken("player")`,
+// not via this global. See CLAUDE.md "Resolving an item-location"
+// for the inventory-crash story.
+constexpr uintptr_t kLocalPlayerGlobal = 0x00B41414;
+constexpr int kOffPlayerBucketArray = 0x1C;
+constexpr int kOffPlayerBucketMask = 0x24;
+constexpr int kBucketStride = 12;
+constexpr int kBucketLinkOffsetField = 0;
+constexpr int kBucketChainHeadField = 8;
+constexpr int kOffEntryInstanceBlock = 0x08;
+constexpr int kOffInstanceTypeMask = 0x08;
+constexpr uint32_t kTypeMaskUnit = 0x08;
+constexpr int kOffUnitNamePlate = 0xE60;
+
+template <typename F>
+int ForEachNamePlatedUnit(F &&emit) {
+    auto *player = *reinterpret_cast<uint8_t *const *>(kLocalPlayerGlobal);
+    if (player == nullptr)
+        return 0;
+
+    auto *buckets = *reinterpret_cast<uint8_t *const *>(
+        player + kOffPlayerBucketArray);
+    const uint32_t mask = *reinterpret_cast<const uint32_t *>(
+        player + kOffPlayerBucketMask);
+    if (buckets == nullptr || mask == 0xFFFFFFFFu)
+        return 0;
+
+    int count = 0;
+    for (uint32_t b = 0; b <= mask; ++b) {
+        const uint8_t *bucket = buckets + b * kBucketStride;
+        const uint32_t linkOffset = *reinterpret_cast<const uint32_t *>(
+            bucket + kBucketLinkOffsetField);
+        uintptr_t entry = *reinterpret_cast<const uintptr_t *>(
+            bucket + kBucketChainHeadField);
+
+        while (entry != 0 && (entry & 1) == 0) {
+            auto *obj = reinterpret_cast<const uint8_t *>(entry);
+            auto *instance = *reinterpret_cast<const uint8_t *const *>(
+                obj + kOffEntryInstanceBlock);
+            if (instance != nullptr) {
+                const uint32_t typeMask = *reinterpret_cast<const uint32_t *>(
+                    instance + kOffInstanceTypeMask);
+                if ((typeMask & kTypeMaskUnit) != 0) {
+                    const auto *nameplate = *reinterpret_cast<const uint8_t *const *>(
+                        obj + kOffUnitNamePlate);
+                    if (nameplate != nullptr) {
+                        emit(obj, nameplate, instance);
+                        ++count;
+                    }
+                }
+            }
+            entry = *reinterpret_cast<const uintptr_t *>(
+                obj + linkOffset + 4);
+        }
+    }
+    return count;
+}
+
+} // namespace NamePlate::Walk
@@ -0,0 +1,121 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Spell.IsAutoAttackSpell` / `C_Spell.IsRangedAutoAttackSpell` and
+// the spellbook-slot variants.
+//
+// Melee — there's only one spell that triggers melee swings (`6603` —
+// "Auto Attack"), and no `Spell.dbc` attribute uniquely identifies it
+// vs. on-next-swing abilities like Heroic Strike or Maul. We test
+// against the engine constant directly.
+//
+// Ranged — both vanilla ranged auto-attacks (`75` Auto Shot, `5019`
+// Shoot wand) set bit 1 of `Spell.dbc.Attributes` (the
+// `SPELL_ATTR_AUTO_REPEAT` flag at value `0x02`). Verified empirically
+// against the in-game cache: Attr `0x00050012` (Auto Shot) and
+// `0x00000012` (Shoot) share that bit; on-next-swing Heroic Strike
+// (`0x00050014`) and other ranged spells like Aimed Shot / Fireball do
+// NOT. The attribute check naturally extends to any future
+// auto-repeating spell a private server might add.
+
+#include "Lookup.h"
+
+#include "Game.h"
+#include "Offsets.h"
+#include "dbc/Lookup.h"
+
+#include <cstdint>
+#include <cstring>
+
+namespace Spell::AutoAttack {
+
+namespace {
+
+constexpr int SPELL_AUTO_ATTACK = 6603;
+constexpr int OFF_SPELL_ATTRIBUTES = 0x18;
+constexpr uint32_t SPELL_ATTR_AUTO_REPEAT = 0x00000002;
+
+bool IsMelee(int spellID) {
+    return spellID == SPELL_AUTO_ATTACK;
+}
+
+bool IsRanged(int spellID) {
+    if (spellID <= 0)
+        return false;
+    const uint8_t *rec = DBC::Record(Offsets::VAR_SPELL_RECORDS,
+                                     Offsets::VAR_SPELL_RECORD_COUNT,
+                                     static_cast<uint32_t>(spellID));
+    if (rec == nullptr)
+        return false;
+    const uint32_t attr = *reinterpret_cast<const uint32_t *>(
+        rec + OFF_SPELL_ATTRIBUTES);
+    return (attr & SPELL_ATTR_AUTO_REPEAT) != 0;
+}
+
+int ReadSpellID(void *L) {
+    if (!Game::Lua::IsNumber(L, 1))
+        return 0;
+    return static_cast<int>(Game::Lua::ToNumber(L, 1));
+}
+
+int ReadSpellBookSlotID(void *L) {
+    if (!Game::Lua::IsNumber(L, 1))
+        return 0;
+    const int slot = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    int bookType = 0;
+    if (Game::Lua::IsString(L, 2)) {
+        const char *s = Game::Lua::ToString(L, 2);
+        if (s != nullptr && _stricmp(s, "pet") == 0)
+            bookType = 1;
+    } else if (Game::Lua::IsNumber(L, 2)) {
+        bookType = static_cast<int>(Game::Lua::ToNumber(L, 2));
+    }
+    return Spell::Lookup::SpellbookSlotToID(slot, bookType);
+}
+
+} // namespace
+
+static int __fastcall Script_IsAutoAttackSpell(void *L) {
+    Game::Lua::PushBool(L, IsMelee(ReadSpellID(L)));
+    return 1;
+}
+
+static int __fastcall Script_IsRangedAutoAttackSpell(void *L) {
+    Game::Lua::PushBool(L, IsRanged(ReadSpellID(L)));
+    return 1;
+}
+
+static int __fastcall Script_IsAutoAttackSpellBookItem(void *L) {
+    Game::Lua::PushBool(L, IsMelee(ReadSpellBookSlotID(L)));
+    return 1;
+}
+
+static int __fastcall Script_IsRangedAutoAttackSpellBookItem(void *L) {
+    Game::Lua::PushBool(L, IsRanged(ReadSpellBookSlotID(L)));
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Spell", "IsAutoAttackSpell",
+                                     &Script_IsAutoAttackSpell);
+    Game::Lua::RegisterTableFunction("C_Spell", "IsRangedAutoAttackSpell",
+                                     &Script_IsRangedAutoAttackSpell);
+    Game::Lua::RegisterTableFunction("C_SpellBook", "IsAutoAttackSpellBookItem",
+                                     &Script_IsAutoAttackSpellBookItem);
+    Game::Lua::RegisterTableFunction("C_SpellBook", "IsRangedAutoAttackSpellBookItem",
+                                     &Script_IsRangedAutoAttackSpellBookItem);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Spell::AutoAttack
@@ -0,0 +1,51 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Spell.DoesSpellExist(spellID)` — true iff the spell ID resolves
+// to a populated `Spell.dbc` record. Cheap existence probe useful
+// before calling other `C_Spell.*` functions that might OOB-crash or
+// return nil/empty for missing spells.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "dbc/Lookup.h"
+
+#include <cstdint>
+
+namespace Spell::Exists {
+
+static int __fastcall Script_DoesSpellExist(void *L) {
+    if (!Game::Lua::IsNumber(L, 1)) {
+        Game::Lua::PushBool(L, false);
+        return 1;
+    }
+    const int spellID = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    if (spellID <= 0) {
+        Game::Lua::PushBool(L, false);
+        return 1;
+    }
+    const uint8_t *rec = DBC::Record(Offsets::VAR_SPELL_RECORDS,
+                                     Offsets::VAR_SPELL_RECORD_COUNT,
+                                     static_cast<uint32_t>(spellID));
+    Game::Lua::PushBool(L, rec != nullptr);
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Spell", "DoesSpellExist",
+                                     &Script_DoesSpellExist);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Spell::Exists
@@ -0,0 +1,110 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Spell.SpellHasRange(spellIdentifier)` and the parallel
+// `SpellHasRange(slot, bookType)` — true iff the spell's
+// `SpellRange.dbc` row has a non-zero min or max range.
+//
+// Vanilla 1.12 doesn't ship `SpellHasRange` as a global at all; 3.3.5+
+// added it but with the spellID-only signature. We provide the modern
+// namespaced shape *and* a `(slot, bookType)` positional form mirroring
+// the other dual-signature globals (`GetSpellInfo`, `GetSpellLink`,
+// etc.) so callers can use whichever they already have.
+
+#include "Arg.h"
+#include "Lookup.h"
+
+#include "Game.h"
+#include "Offsets.h"
+#include "dbc/Lookup.h"
+
+#include <cstdint>
+#include <cstring>
+
+namespace Spell::HasRange {
+
+namespace {
+
+// Spell.dbc RangeIndex field — mirrors `Script_GetSpellInfo`'s
+// local constant. Future refactor: promote to `Offsets.h`.
+constexpr int OFF_SPELL_RANGE_INDEX = 0x90;
+
+// SpellRange.dbc record layout (verified, documented in CLAUDE.md
+// under "Sub-DBC record layouts"):
+//   +0x00 id, +0x04 minRange (float), +0x08 maxRange (float), ...
+constexpr int OFF_SPELLRANGE_MIN = 0x04;
+constexpr int OFF_SPELLRANGE_MAX = 0x08;
+
+bool SpellIDHasRange(int spellID) {
+    if (spellID <= 0)
+        return false;
+    const uint8_t *spellRec = DBC::Record(Offsets::VAR_SPELL_RECORDS,
+                                          Offsets::VAR_SPELL_RECORD_COUNT,
+                                          static_cast<uint32_t>(spellID));
+    if (spellRec == nullptr)
+        return false;
+    const uint32_t rangeIdx = *reinterpret_cast<const uint32_t *>(
+        spellRec + OFF_SPELL_RANGE_INDEX);
+    if (rangeIdx == 0)
+        return false;
+    const uint8_t *rangeRec = DBC::Record(Offsets::VAR_SPELL_RANGE_RECORDS,
+                                          Offsets::VAR_SPELL_RANGE_COUNT,
+                                          rangeIdx);
+    if (rangeRec == nullptr)
+        return false;
+    const float minRange = *reinterpret_cast<const float *>(
+        rangeRec + OFF_SPELLRANGE_MIN);
+    const float maxRange = *reinterpret_cast<const float *>(
+        rangeRec + OFF_SPELLRANGE_MAX);
+    return minRange > 0.0f || maxRange > 0.0f;
+}
+
+} // namespace
+
+static int __fastcall Script_C_Spell_SpellHasRange(void *L) {
+    const int spellID = Spell::Arg::ResolveSpellID(L, 1);
+    Game::Lua::PushBool(L, SpellIDHasRange(spellID));
+    return 1;
+}
+
+// `SpellHasRange(slot, bookType)` — vanilla-style positional shape.
+// `bookType` is the same string convention used by `GetSpellName`:
+// `"spell"` (or omitted / anything-not-pet) → player book,
+// `"pet"` → pet book.
+static int __fastcall Script_SpellHasRange(void *L) {
+    if (!Game::Lua::IsNumber(L, 1)) {
+        Game::Lua::PushBool(L, false);
+        return 1;
+    }
+    const int slot = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    int bookType = 0;
+    if (Game::Lua::IsString(L, 2)) {
+        const char *s = Game::Lua::ToString(L, 2);
+        if (s != nullptr && _stricmp(s, "pet") == 0)
+            bookType = 1;
+    }
+    const int spellID = Spell::Lookup::SpellbookSlotToID(slot, bookType);
+    Game::Lua::PushBool(L, SpellIDHasRange(spellID));
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Spell", "SpellHasRange",
+                                     &Script_C_Spell_SpellHasRange);
+    Game::Lua::RegisterGlobalFunction("SpellHasRange",
+                                      &Script_SpellHasRange);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Spell::HasRange
@@ -0,0 +1,94 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Spell.IsSelfBuff(spellID)` — true iff every active effect on the
+// spell targets the caster and only the caster. Read directly from
+// `Spell.dbc.EffectImplicitTargetA[3]` and `EffectImplicitTargetB[3]`
+// — an effect is "self-only" when both targets are either
+// `TARGET_NONE` (0) or `TARGET_SELF` (1). Effects with a zero
+// `Effect` code are skipped (unused effect slots).
+
+#include "Game.h"
+#include "Offsets.h"
+#include "dbc/Lookup.h"
+
+#include <cstdint>
+
+namespace Spell::IsSelfBuff {
+
+namespace {
+
+// Spell.dbc per-effect arrays. Each is an int32[3] in the record.
+// Field-index derivation against the known `EffectApplyAuraName` at
+// field 91 / +0x16C — the implicit-target pair sits at field 82/85.
+constexpr int OFF_SPELL_EFFECT = 0xF4;            // SPELL_EFFECT_* code
+constexpr int OFF_SPELL_EFFECT_TARGET_A = 0x148;
+constexpr int OFF_SPELL_EFFECT_TARGET_B = 0x154;
+constexpr int EFFECT_COUNT = 3;
+
+// Vanilla 1.12 implicit-target codes (CMaNGOS `Targets` enum).
+constexpr int TARGET_NONE = 0;
+constexpr int TARGET_SELF = 1;
+
+bool IsSelfOnlyTarget(int target) {
+    return target == TARGET_NONE || target == TARGET_SELF;
+}
+
+} // namespace
+
+static int __fastcall Script_IsSelfBuff(void *L) {
+    if (!Game::Lua::IsNumber(L, 1)) {
+        Game::Lua::PushBool(L, false);
+        return 1;
+    }
+    const int spellID = static_cast<int>(Game::Lua::ToNumber(L, 1));
+    if (spellID <= 0) {
+        Game::Lua::PushBool(L, false);
+        return 1;
+    }
+    const uint8_t *rec = DBC::Record(Offsets::VAR_SPELL_RECORDS,
+                                     Offsets::VAR_SPELL_RECORD_COUNT,
+                                     static_cast<uint32_t>(spellID));
+    if (rec == nullptr) {
+        Game::Lua::PushBool(L, false);
+        return 1;
+    }
+
+    bool sawEffect = false;
+    for (int i = 0; i < EFFECT_COUNT; ++i) {
+        const int effect = *reinterpret_cast<const int *>(
+            rec + OFF_SPELL_EFFECT + i * 4);
+        if (effect == 0)
+            continue;
+        sawEffect = true;
+        const int targetA = *reinterpret_cast<const int *>(
+            rec + OFF_SPELL_EFFECT_TARGET_A + i * 4);
+        const int targetB = *reinterpret_cast<const int *>(
+            rec + OFF_SPELL_EFFECT_TARGET_B + i * 4);
+        if (!IsSelfOnlyTarget(targetA) || !IsSelfOnlyTarget(targetB)) {
+            Game::Lua::PushBool(L, false);
+            return 1;
+        }
+    }
+    Game::Lua::PushBool(L, sawEffect);
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Spell", "IsSelfBuff",
+                                     &Script_IsSelfBuff);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Spell::IsSelfBuff
@@ -0,0 +1,70 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Spell.GetSchoolString(schoolMask)` — localized name for a damage
+// school bitmask. Vanilla spells are single-school (the multi-school
+// combos like "Frostfire" / "Shadowflame" / "Spellstorm" were
+// TBC-and-later additions), so we resolve any single-bit mask to its
+// `SPELL_SCHOOL<n>_CAP` global string and return "Unknown" for any
+// combination — matching the modern API's documented fallback.
+
+#include "Game.h"
+#include "Offsets.h"
+
+#include <cstdint>
+#include <cstdio>
+
+namespace Spell::SchoolString {
+
+namespace {
+
+// Returns the 0-based school index for a single-bit mask, or -1 if
+// the mask has zero or multiple bits set (or is out of the 7-school
+// range vanilla supports).
+int SingleBitSchoolIndex(uint32_t mask) {
+    if (mask == 0 || (mask & (mask - 1)) != 0)
+        return -1;
+    for (int i = 0; i < 7; ++i) {
+        if (mask == (1u << i))
+            return i;
+    }
+    return -1;
+}
+
+} // namespace
+
+static int __fastcall Script_GetSchoolString(void *L) {
+    if (!Game::Lua::IsNumber(L, 1)) {
+        Game::Lua::PushString(L, "Unknown");
+        return 1;
+    }
+    const auto mask = static_cast<uint32_t>(Game::Lua::ToNumber(L, 1));
+    const int idx = SingleBitSchoolIndex(mask);
+    if (idx < 0) {
+        Game::Lua::PushString(L, "Unknown");
+        return 1;
+    }
+    char globalName[24];
+    std::snprintf(globalName, sizeof globalName, "SPELL_SCHOOL%d_CAP", idx);
+    Game::Lua::PushLocalizedString(L, globalName, "Unknown");
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Spell", "GetSchoolString",
+                                     &Script_GetSchoolString);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Spell::SchoolString
@@ -0,0 +1,65 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `C_Spell.GetSpellSubtext(spellIdentifier)` — the localized "Rank N"
+// / "Passive" / "Racial Passive" string from `Spell.dbc.Rank[9]`.
+// String-keyed input resolves by name through the spellbook (modern
+// `SpellIdentifier` semantics); numeric input is a direct spellID
+// lookup.
+
+#include "Arg.h"
+
+#include "Game.h"
+#include "Offsets.h"
+#include "dbc/Lookup.h"
+
+#include <cstdint>
+
+namespace Spell::Subtext {
+
+namespace {
+
+// `Spell.dbc.Rank[9]` — same 9-slot locale-string array shape as the
+// adjacent `Name[9]` field. Defined locally; sibling modules
+// (`Info.cpp`, `Tooltip.cpp`, `macro/Spell.cpp`) carry the same
+// constant — promoting to `Offsets.h` is a future refactor.
+constexpr int OFF_SPELL_RANK = 0x204;
+
+} // namespace
+
+static int __fastcall Script_GetSpellSubtext(void *L) {
+    const int spellID = Spell::Arg::ResolveSpellID(L, 1);
+    if (spellID <= 0) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    const char *subtext = DBC::LocalizedField(Offsets::VAR_SPELL_RECORDS,
+                                              Offsets::VAR_SPELL_RECORD_COUNT,
+                                              static_cast<uint32_t>(spellID),
+                                              OFF_SPELL_RANK);
+    if (subtext == nullptr) {
+        Game::Lua::PushNil(L);
+        return 1;
+    }
+    Game::Lua::PushString(L, subtext);
+    return 1;
+}
+
+static void RegisterLuaFunctions() {
+    Game::Lua::RegisterTableFunction("C_Spell", "GetSpellSubtext",
+                                     &Script_GetSpellSubtext);
+}
+
+static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+
+} // namespace Spell::Subtext
@@ -0,0 +1,127 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// `FocusUnit(unit)` / `ClearFocus()` / `focus` unit token. Polyfills
+// the post-vanilla focus-target system on top of the engine's
+// existing token resolver via the hook in
+// `unit/TokenExtensions.cpp`.
+//
+// Storage: a single 64-bit GUID held in-process. The 3.3.5 engine
+// keeps the same shape (two globals at `DAT_00BD07D0`/`D4`); we
+// don't share those because vanilla never reads them. The resolver
+// hook reads our `Unit::Focus::Get()` directly.
+//
+// Setter mirrors 3.3.5's `FUN_0051FF20` minus the post-vanilla
+// `UnitFlag bit 0x2000` ("focus glow" rendering hint, introduced in
+// TBC for the default focus frame). Vanilla addons (pfUI) render
+// their own focus indicator and don't need the hint.
+//
+// Auto-clear on despawn: modern WoW fires `PLAYER_FOCUS_CHANGED`
+// when the focused unit leaves the client's object table (out of
+// rendering range, despawn) and does NOT auto-refocus when they
+// come back. We mirror that by probing `ObjectByGUID(g_focusGUID)`
+// every world tick — when it returns null, we `Set(0)` which fires
+// the event. Cost is one hash-table lookup per tick while focus is
+// set; zero when no focus is active.
+
+#include "Focus.h"
+
+#include "Game.h"
+#include "Offsets.h"
+#include "event/Custom.h"
+#include "tick/WorldTick.h"
+
+#include <cstdint>
+
+namespace Unit::Focus {
+
+namespace {
+
+constexpr const char *kEventName = "PLAYER_FOCUS_CHANGED";
+const Event::Custom::AutoReserve _reserve{kEventName};
+
+uint64_t g_focusGUID = 0;
+
+using TokenToGUID_t = uint64_t(__fastcall *)(const char *token);
+using ResolveByGUID_t = void *(__fastcall *)(int type, const char *debugName,
+                                              uint32_t guidLo, uint32_t guidHi,
+                                              int priority);
+
+uint64_t ResolveTokenGUID(const char *token) {
+    if (token == nullptr || *token == '\0')
+        return 0;
+    auto fn = reinterpret_cast<TokenToGUID_t>(
+        static_cast<uintptr_t>(Offsets::FUN_TOKEN_TO_GUID));
+    return fn(token);
+}
+
+// Per-tick despawn watcher. Probes the engine's object table for
+// `g_focusGUID`; when it disappears (out of range, fully despawned),
+// clear focus and fire PLAYER_FOCUS_CHANGED — matches modern's
+// "leaves render distance → focus drops" behavior. Won't refocus
+// when the unit comes back, also matching modern.
+void OnWorldTick() {
+    if (g_focusGUID == 0)
+        return;
+    auto resolve = reinterpret_cast<ResolveByGUID_t>(
+        static_cast<uintptr_t>(Offsets::FUN_OBJECT_RESOLVE_BY_GUID));
+    if (resolve(Offsets::OBJ_TYPE_UNIT, "Focus",
+                static_cast<uint32_t>(g_focusGUID),
+                static_cast<uint32_t>(g_focusGUID >> 32),
+                0x172) == nullptr)
+        Set(0);
+}
+
+// `FocusUnit(unit)` — sets focus to whatever GUID `unit` currently
+// resolves to. Modern signature: `FocusUnit(unit)` with the token
+// argument. Modern also allows `FocusUnit()` (no arg) to mean
+// `"target"`, matching the `/focus` slash command's default.
+int __fastcall Script_FocusUnit(void *L) {
+    if (Game::Lua::IsString(L, 1)) {
+        const char *token = Game::Lua::ToString(L, 1);
+        Set(ResolveTokenGUID(token));
+    } else {
+        Set(ResolveTokenGUID("target"));
+    }
+    return 0;
+}
+
+// `ClearFocus()` — drops the focus, fires PLAYER_FOCUS_CHANGED.
+int __fastcall Script_ClearFocus(void *L) {
+    (void)L;
+    Set(0);
+    return 0;
+}
+
+void RegisterLuaFunctions() {
+    Game::Lua::RegisterGlobalFunction("FocusUnit", &Script_FocusUnit);
+    Game::Lua::RegisterGlobalFunction("ClearFocus", &Script_ClearFocus);
+}
+
+const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
+const Tick::WorldTick::AutoSubscribe _tickSub{&OnWorldTick};
+
+} // namespace
+
+uint64_t Get() { return g_focusGUID; }
+
+void Set(uint64_t guid) {
+    if (guid == g_focusGUID)
+        return; // no-op: same target → no event fire (matches 3.3.5)
+    g_focusGUID = guid;
+    const int slot = Event::Custom::Lookup(kEventName);
+    if (slot >= 0)
+        Event::Custom::Fire(slot, "");
+}
+
+} // namespace Unit::Focus
@@ -0,0 +1,31 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <cstdint>
+
+namespace Unit::Focus {
+
+// Current focus GUID, or `0` when nothing is focused. Read by the
+// `focus` / `focustarget*` branch of the token resolver in
+// `unit/TokenExtensions.cpp`.
+uint64_t Get();
+
+// Sets focus to `guid` and fires `PLAYER_FOCUS_CHANGED` (no args).
+// Identity-checks first — assigning the same GUID is a no-op,
+// matching 3.3.5's `FUN_0051FF20` behavior so the event only fires
+// on a real transition. Pass `0` to clear focus.
+void Set(uint64_t guid);
+
+} // namespace Unit::Focus
@@ -14,6 +14,7 @@
 #include "Game.h"
 #include "Offsets.h"
 #include "guid/Guid.h"
+#include "nameplate/Walk.h"

 #include <cstdint>
 #include <cstdio>
@@ -105,13 +106,17 @@ static int __fastcall Script_UnitGUID(void *L) {
 // nil if none of the known tokens point at it.
 //
 // The search walks the modern retail token order with post-vanilla
-// tokens dropped (no `vehicle`, `nameplateN`, `arenaN`, `arenapetN`,
-// `bossN`, `focus`, `softenemy`, `softfriend`, `softinteract` —
-// those all post-date 1.12 and `FUN_TOKEN_TO_GUID` would raise
-// "Unknown unit name" for them). Order:
+// tokens dropped (no `vehicle`, `arenaN`, `arenapetN`, `bossN`,
+// `softenemy`, `softfriend`, `softinteract` — those all post-date
+// 1.12 and `FUN_TOKEN_TO_GUID` would raise "Unknown unit name" for
+// them). `nameplateN` and `focus` are included — we hook the token
+// resolver so the engine recognizes them (see
+// `unit/TokenExtensions.cpp` and `unit/Focus.cpp`). Order matches
+// retail with the dropped tokens skipped in place:
 //
 //   player → pet → party1..4 → partypet1..4 → raid1..40
-//          → raidpet1..40 → target → npc → mouseover
+//          → raidpet1..40 → nameplate1..N → target → focus
+//          → npc → mouseover
 //
 // The result is inherently unstable — multiple tokens can map to the
 // same GUID at once (your target IS your mouseover IS your party1), and
@@ -183,7 +188,24 @@ static int __fastcall Script_UnitTokenFromGUID(void *L) {
        if (check(buf)) return 1;
    }

+    // Visible nameplates. The ordered list (see
+    // `NamePlate::Events::g_orderedGUIDs`) is dense — `GetGUIDByIndex`
+    // returns 0 once we step past the populated count, terminating
+    // the loop. Skips the token-resolver hook + SStrCmpI cost per
+    // index by comparing GUIDs directly.
+    for (int i = 1; ; ++i) {
+        const uint64_t plateGuid = NamePlate::Events::GetGUIDByIndex(i);
+        if (plateGuid == 0)
+            break;
+        if (plateGuid == target) {
+            std::snprintf(buf, sizeof buf, "nameplate%d", i);
+            Game::Lua::PushString(L, buf);
+            return 1;
+        }
+    }
+
    if (check("target")) return 1;
+    if (check("focus")) return 1;
    if (check("npc")) return 1;
    if (check("mouseover")) return 1;

@@ -0,0 +1,153 @@
+// This file is part of ClassicAPI.
+//
+// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
+// of the GNU Lesser General Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE. See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License along with
+// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
+
+// Extend `FUN_TOKEN_TO_GUID` (`0x00515970`) with post-vanilla unit
+// tokens. Hooking the central token→GUID resolver means every
+// `Script_Unit*` (UnitName, UnitGUID, UnitHealth, UnitClass,
+// UnitExists, …) gains support for the new token families for free,
+// since they all funnel here.
+//
+// Currently extended families:
+//
+// - `nameplate1`..`nameplateN` — index into the ordered list of
+//   visible nameplates maintained in `nameplate/Events.cpp`. See
+//   `Unit tokens (nameplateN)` in docs/API.md.
+//
+// - `focus` — single-slot sticky target backed by `Unit::Focus`.
+//   See `unit/Focus.cpp` for the storage + `PLAYER_FOCUS_CHANGED`
+//   event firing.
+//
+// Both families compose with the engine's own `target`-suffix walker
+// (`focustarget`, `nameplate1targettarget`) via the shared
+// `WalkSuffix` helper, which mirrors the engine's
+// `LAB_005159d3..0x00515A2C` walker instruction-for-instruction
+// (SStrCmpI "target" + ObjectByGUID + read UNIT_FIELD_TARGET).
+//
+// Resolution order in the hook: focus check first (literal-equal,
+// short token), then nameplate prefix (longer, requires digit).
+// Both branches short-circuit; on no-match the original engine
+// resolver runs unchanged.
+
+#include "Game.h"
+#include "Offsets.h"
+#include "nameplate/Walk.h"
+#include "unit/Focus.h"
+
+#include <cstdint>
+
+namespace Unit::TokenExtensions {
+
+namespace {
+
+using TokenToGUID_t = uint64_t(__fastcall *)(const char *token);
+// `__stdcall`, not `__cdecl` — `FUN_00064A4C0` ends with `ret 0xc`,
+// callee cleans 3-arg stack frame. Calling it through a cdecl typedef
+// makes MSVC emit `add esp, 12` after the call on top of the callee's
+// own cleanup, drifting ESP +12 per call and corrupting the caller's
+// frame.
+using SStrCmpI_t = int(__stdcall *)(const char *a, const char *b, int n);
+using ResolveByGUID_t = void *(__fastcall *)(int type, const char *debugName,
+                                              uint32_t guidLo, uint32_t guidHi,
+                                              int priority);
+
+constexpr const char kNamePlatePrefix[] = "nameplate";
+constexpr int kNamePlatePrefixLen = static_cast<int>(sizeof(kNamePlatePrefix) - 1);
+constexpr const char kFocusPrefix[] = "focus";
+constexpr int kFocusPrefixLen = static_cast<int>(sizeof(kFocusPrefix) - 1);
+constexpr const char kSuffixTarget[] = "target";
+constexpr int kSuffixTargetLen = static_cast<int>(sizeof(kSuffixTarget) - 1);
+
+// Engine's own priority value for the suffix walker's ObjectByGUID
+// calls (verified at `0x005159FE: PUSH 0x6E`). Different from the
+// `0x172` we use elsewhere — matching the engine here so the
+// resolver's lookup path is identical to the native `targettarget`
+// walker.
+constexpr int kResolvePriority = 0x6e;
+
+TokenToGUID_t Original_o = nullptr;
+
+uint64_t WalkSuffix(uint64_t guid, const char *suffix) {
+    auto resolve = reinterpret_cast<ResolveByGUID_t>(
+        Offsets::FUN_OBJECT_RESOLVE_BY_GUID);
+    auto sstrcmpi = reinterpret_cast<SStrCmpI_t>(Offsets::FUN_SSTR_CMP_I);
+    while (guid != 0 && *suffix != '\0') {
+        if (sstrcmpi(suffix, kSuffixTarget, kSuffixTargetLen) != 0)
+            return 0; // unknown suffix component — modern returns nil
+        suffix += kSuffixTargetLen;
+        auto *obj = static_cast<uint8_t *>(
+            resolve(Offsets::OBJ_TYPE_UNIT, "ClassicAPI",
+                    static_cast<uint32_t>(guid),
+                    static_cast<uint32_t>(guid >> 32),
+                    kResolvePriority));
+        if (obj == nullptr)
+            return 0;
+        // `m_objectFields` is a *pointer* stored at `obj + 0x110`,
+        // not an inline array. Engine's walker does
+        // `mov eax, [obj+0x110]; mov edi, [eax+0x28]` — two
+        // dereferences. Earlier version of this code missed the
+        // first one and read instruction bytes interpreted as GUIDs.
+        auto *fields = *reinterpret_cast<const uint8_t *const *>(
+            obj + Offsets::OFF_CGUNIT_OBJECT_FIELDS);
+        if (fields == nullptr)
+            return 0;
+        guid = *reinterpret_cast<const uint64_t *>(
+            fields + Offsets::OFF_UNIT_FIELD_TARGET);
+    }
+    return guid;
+}
+
+uint64_t __fastcall Hook_h(const char *token) {
+    if (token == nullptr || *token == '\0')
+        return Original_o(token);
+
+    auto sstrcmpi = reinterpret_cast<SStrCmpI_t>(Offsets::FUN_SSTR_CMP_I);
+
+    // `focus` / `focustarget*`. The 5-char prefix is unique among
+    // unit tokens (no `focuscast` / `focused*` etc. live in vanilla
+    // or modern resolvers), so any match continues as our token.
+    if (sstrcmpi(token, kFocusPrefix, kFocusPrefixLen) == 0) {
+        const uint64_t guid = Unit::Focus::Get();
+        if (guid == 0)
+            return 0;
+        return WalkSuffix(guid, token + kFocusPrefixLen);
+    }
+
+    // `nameplateN` / `nameplate1target*`. Requires a digit after the
+    // prefix; anything else (`nameplate`, `nameplateX`) falls through
+    // to the engine for its standard "Unknown unit name" error.
+    if (sstrcmpi(token, kNamePlatePrefix, kNamePlatePrefixLen) == 0) {
+        const char *p = token + kNamePlatePrefixLen;
+        if (*p >= '0' && *p <= '9') {
+            int index = 0;
+            while (*p >= '0' && *p <= '9') {
+                index = index * 10 + (*p - '0');
+                ++p;
+            }
+            const uint64_t guid = NamePlate::Events::GetGUIDByIndex(index);
+            if (guid == 0)
+                return 0;
+            return WalkSuffix(guid, p);
+        }
+    }
+
+    return Original_o(token);
+}
+
+} // namespace
+
+static const Game::HookAutoRegister _hook{
+    Offsets::FUN_TOKEN_TO_GUID,
+    reinterpret_cast<void *>(&Hook_h),
+    reinterpret_cast<void **>(&Original_o)};
+
+} // namespace Unit::TokenExtensions
Author	SHA1	Message	Date
Brues	ec73652b67	2nd arg "canOpen" for IsItemOpenable removed IsItemOpenableByID	2026-05-28 23:26:04 -05:00
Brues	4c798ba58a	turtle wow injects a bad version of print	2026-05-28 16:01:17 -05:00
brues-code	fbe81b7f01	Simplify API documentation for combat check Removed redundant explanation for UnitAffectingCombat.	2026-05-28 15:30:44 -05:00
brues-code	1c0e20cca8	Update CharacterOrder to CharacterList in README	2026-05-28 15:21:40 -05:00
Brues	1242f1dd9f	Openable: return nil for uncached items	2026-05-28 14:37:43 -05:00
Brues	de0c41dd1d	IsItemOpenable	2026-05-28 14:33:41 -05:00
Brues	3e22e2c087	useless comment	2026-05-28 14:33:23 -05:00
Brues	beb9dec6e1	max out CLASSICAPI_VERSION_VALUE for dev build	2026-05-28 00:52:17 -05:00
Brues	e760d5f07e	Drop focus when out of render distance	2026-05-27 23:44:22 -05:00
Brues	d0b6a7c0f3	C_Container.GetContainerItemCharges	2026-05-27 23:43:28 -05:00
brues-codeandBrues	96b0cf6075	FocusUnit / ClearFocus + focus unit token (#2 ) * FocusUnit * UnitTokenFromGUID: place focus after target, not after mouseover Retail's documented scan order is player -> vehicle -> pet -> party -> partypet -> raid -> raidpet -> nameplate -> arena -> arenapet -> boss -> target -> focus -> npc -> mouseover -> softenemy -> softfriend -> softinteract Earlier commit placed focus at the very end. Moves it into the target-adjacent slot so a focused unit reverse-resolves to "focus" the moment it isn't also "target", matching retail. --------- Co-authored-by: Brues <5278969+brues-code@users.noreply.github.com>	2026-05-27 19:34:12 -05:00
Brues	c0c14c6947	C_Container.SwapItems / MoveItem: accept bank slot IDs Extend EncodeBagSlot with two new branches matching vanilla's bagID conventions: - bagID = -1 -> main bank (24 slots at linear 39..62, container = player GUID; same shape as backpack with a +38 offset instead of +22). - bagID = 5..10 -> equipped bank bags (containers at equipment slots 64..69; same shape as equipped bags with the index range shifted). Both paths require the bank window to be open in the current session — the engine doesn't sync bank-side CGContainers or bank inventory entries before then, so ResolveEquipmentSlot returns null and EncodeBagSlot bails cleanly. Same constraint GetContainerItemInfo has on bank IDs.	2026-05-26 19:11:55 -05:00
Brues	a0df98750b	UnitTokenFromGUID: scan nameplateN between raidpet and target Now that the engine recognizes `nameplateN` tokens (via the resolver hook in nameplate/TokenResolver.cpp), they belong in the reverse- lookup walk too. Iterates the dense ordered list directly via NamePlate::Events::GetGUIDByIndex — bails on the first zero return, skipping the token-resolver + SStrCmpI cost per index.	2026-05-26 16:32:08 -05:00
brues-codeandBrues	da8454c7c2	C_NamePlate API + nameplateN unit tokens (#1 ) * C_NamePlate.GetNamePlateGUIDs * fixed NameCache header * C_NamePlate.GetNamePlates * GetNamePlates will show blizzard nameplates as well * C_NamePlate.GetNamePlateForUnit * nameplate events * C_NamePlate.GetNamePlateForGUID * NAME_PLATE_CREATED now sends frame as argument * document verification provenance for nameplate-adjacent offsets - Offsets.h: annotate LUA_REF_REF / LUA_REF_UNREF with their Ghidra decompile shapes (FREELIST_REF chain + LUA_REFNIL/NOREF sentinels) so the next maintainer doesn't have to re-derive whether these are really luaL_ref/unref. - Walk.h: warn that the 0x00B41414 player global overlays multiple sub-objects; reading +0x1C/+0x24 here is safe, feeding it to the inventory path crashes. * harden nameplate frame push against stale registry refs PushNamePlateFrame now type-checks the rawgeti'd value; on a stale slot (post-/reload windows, freed slot, etc.) it pops and falls back to a fresh wrapper instead of returning whatever the registry happens to hold at that index in the new Lua state. Script_GetNamePlates now routes through the same helper so it inherits the guard. Also document the bound on g_seenPlates: pool reuse via DAT_00c4d920 caps it at the session's peak simultaneous-plate count. * support nameplateN unit tokens Hook FUN_TOKEN_TO_GUID so every Script_Unit* (UnitName, UnitGUID, UnitHealth, UnitClass, UnitExists, ...) accepts `nameplateN` tokens and their `target`-suffix chains (`nameplate1target`, `nameplate1targettarget`) — modern WoW semantics on the vanilla engine. Hook is gated by an SStrCmpI prefix check; non-nameplate tokens fall straight through to the original resolver. - Ordered GUID list is maintained alongside the existing NAME_PLATE_UNIT_ADDED / _REMOVED diff. Append on ADDED, erase on REMOVED — creation-order, stable for a plate's lifetime, modern semantics. - Suffix walker mirrors the engine's own LAB_005159d3 walker instruction-for-instruction: SStrCmpI "target" + ObjectByGUID + read UNIT_FIELD_TARGET (m_objectFields + 0x28). - SStrCmpI typedef is __stdcall, not __cdecl. The function ends with ret 0xc; declaring it cdecl makes MSVC emit a redundant add esp, 12 on top of the callee cleanup, drifting ESP +12 per call and crashing somewhere deep in Lua once L gets read from a poisoned stack slot. - m_objectFields is a pointer at obj+0x110, not an inline byte offset. Two dereferences (mov eax, [obj+0x110]; mov edi, [eax+0x28]), not one — earlier version mistook the inline-vs-pointer shape and read instruction bytes as GUIDs. * document nameplateN unit-token support - API.md NamePlate section: replace the "scope vs. modern (deferred)" callout with a pointer to the new Unit tokens subsection; update the events table and "modern divergence" callout to explain why the GUID payload remains (engine dispatcher can't carry Lua values through %s/%d/%u/%f format codes) even though the token form now works. - New "Unit tokens (`nameplateN`)" subsection covering the resolved ~30 UnitX functions, creation-order semantics, suffix chains (`nameplate1target`, `targettarget`), and the SStrCmpI prefix-gate implementation detail. - UnitTokenFromGUID's "post-1.12 omitted" list: nameplateN is no longer engine-unsupported (we hook the resolver) but it's still not used as a reverse-lookup key — indices can be reassigned during a session, so it'd be unstable. - README: new Unit tokens table row pointing to the API.md anchor. * return stable nameplate wrapper across calls PushNamePlateFrame was building a fresh Lua table on every call for unregistered (default vanilla) nameplates — so fields addons set on the wrapper they received in NAME_PLATE_CREATED were lost on the next GetNamePlateForUnit lookup. pfUI specifically writes `plate.nameplate = styledButton` on the CREATED-delivered table to hand its overlay back through our API, and that field was disappearing. Fix: pin the first wrapper for each nameplate pointer in the Lua registry via luaL_ref, cache the refkey in g_wrapperRefkeys, and rawgeti on every subsequent push. Same table identity for the life of the engine plate. Bound by the CGNamePlateFrame pool size (~80). Cleared on /reload via a new NamePlate::Info::PrepareForReload() wired into FrameScript_Initialize_h next to the existing Event::Custom and NameCache reload hooks — stale refkeys would otherwise point into the freed registry. * NAME_PLATE_UNIT events now fire token * nameplate events: ship "nameplateN" tokens, delegate wrappers to engine Two intertwined changes that together make nameplate-mod addons (pfUI) survive pool recycle. 1. NAME_PLATE_UNIT_ADDED / _REMOVED arg1 is now the "nameplateN" unit token, matching modern WoW exactly. For REMOVED we compute the token before erasing from g_orderedGUIDs so the handler can still resolve the leaving unit. Addons that want a stable hash key call UnitGUID(arg1) to convert. 2. PushNamePlateFrame now delegates to the engine's own FrameScript_Object::ScriptRegister (0x00701BD0) instead of maintaining our own luaL_ref'd wrapper cache. Per-pointer the engine builds a wrapper table once, refs it into the registry, and stores the refkey at nameplate+0x08 - every code path (ours, addons' CreateFrame(parent) extraction, the engine's own internal pushers) then funnels through rawgeti(REGISTRY, nameplate+0x08) and gets the same Lua table. The prior approach kept our own wrapper alongside the engine's once pfUI's CreateFrame inside NAME_PLATE_CREATED caused the engine to register the underlying frame itself - fields set on our wrapper (plate.nameplate = decoratedButton) disappeared from the API surface even though they still existed on the orphaned table. Single-source-of-truth fixes it. The refcount-pinning caveat CLAUDE.md warned about is benign for pool-managed nameplates (never destroyed during a session). Also clear seenPlates / lastTickPlates / orderedGUIDs on FrameScript_Initialize so currently-visible plates refire CREATED + UNIT_ADDED after /reload - re-presents them to the freshly reloaded UI, matching modern WoW. --------- Co-authored-by: Brues <5278969+brues-code@users.noreply.github.com>	2026-05-26 16:23:09 -05:00
Brues	d5a45c73cb	Addon: LinkUtil	2026-05-26 02:10:41 -05:00
Brues	a51225cb84	ranged auto-attack: detect via SPELL_ATTR_AUTO_REPEAT bit Drop the hardcoded {75, 5019} ID list in favor of testing Spell.dbc.Attributes bit 1. Auto Shot (Attr=0x00050012) and Shoot wand (Attr=0x00000012) share that bit; on-next-swing Heroic Strike and other ranged spells don't. Future-proofs against private servers adding new auto-repeating spells.	2026-05-26 00:34:11 -05:00
Brues	6969fa77d1	create spellbook section	2026-05-26 00:24:10 -05:00
Brues	74b3765683	auto attack check spells	2026-05-26 00:19:28 -05:00
Brues	10df3f11c2	C_Spell.SpellHasRange	2026-05-26 00:12:47 -05:00
Brues	e2d7b0f555	C_Spell.IsSelfBuff	2026-05-26 00:05:43 -05:00
Brues	209a57a8d6	C_Spell.GetSpellSubtext	2026-05-26 00:02:04 -05:00
Brues	acb0456610	C_Spell.GetSchoolString	2026-05-25 23:58:10 -05:00
Brues	e47f3aacb2	C_Spell.DoesSpellExist	2026-05-25 23:49:29 -05:00
Brues	d718530a7a	GetItemUniquenessByID	2026-05-25 23:42:10 -05:00
Brues	55d4e1856f	GetStackCount/GetItemUniqueness	2026-05-25 23:37:39 -05:00
Brues	68771506a8	IsInRaid/IsInGroup	2026-05-25 23:37:14 -05:00
Brues	d0dc8c1965	generate notes for new releases	2026-05-25 15:13:04 -05:00