Add minimap tracking dropdown with Wrath-style NPC icons

Take over native MiniMapTrackingFrame to show a tracking spell
dropdown (Hunter Track X, Sense Undead/Demons, Find Herbs/Minerals)
plus NPC tracking categories with icons extracted from the 3.3.5
client (Auctioneer, Flight Master, Mailbox, Repair, etc.).

build.zig

@@ -19,7 +19,7 @@ const module_list = [_]ModuleDesc{
     .{ .name = "worldmarkers", .desc = "Enable world markers module", .src_dir = "markers", .addon_name = "WorldMarkers" },
     .{ .name = "framecrash", .desc = "Enable framecrash fix", .default = false },
     .{ .name = "logsessions", .desc = "Enable log session rotation", .addon_name = "LogSessions" },
-    .{ .name = "minimapicons", .desc = "Enable custom minimap icons" },
+    .{ .name = "minimapicons", .desc = "Enable custom minimap icons", .addon_name = "MinimapIcons" },
     .{ .name = "transmogfix", .desc = "Enable transmog update coalescing" },
     .{ .name = "customassets", .desc = "Enable loose file loading & permissive patch glob" },
     .{ .name = "healtextfix", .desc = "Enable SuperWoW heal text fix" },

src/main.zig

@@ -146,6 +146,7 @@ const embed_modules = [_]EmbedModule{
     .{ .option = "outline", .addon_name = "Outline", .addon_files_opt = "outline_addon_files" },
     .{ .option = "worldmarkers", .addon_name = "WorldMarkers", .addon_files_opt = "worldmarkers_addon_files", .asset_files_opt = "worldmarkers_asset_files" },
     .{ .option = "logsessions", .addon_name = "LogSessions", .addon_files_opt = "logsessions_addon_files" },
+    .{ .option = "minimapicons", .addon_name = "MinimapIcons", .addon_files_opt = "minimapicons_addon_files", .asset_files_opt = "minimapicons_asset_files" },
 };
 
 /// Extract filename from a path like "markers/addon/Foo.lua" → "Foo.lua"
@@ -202,7 +203,7 @@ fn embedFiles(comptime paths: []const []const u8) [paths.len]FileEntry {
 
 /// Build all AddonPrefix entries from embed_modules at comptime.
 fn buildAllPrefixes() []const AddonPrefix {
-    @setEvalBranchQuota(10000);
+    @setEvalBranchQuota(50000);
     comptime {
         // First pass: count total prefix entries
         var count: usize = 0;

src/minimapicons/addon/MinimapIcons.lua

@@ -0,0 +1,246 @@
+-- MinimapIcons addon (embedded in DLL, loaded from memory)
+-- Takes over the native MiniMapTrackingFrame to add a tracking spell dropdown
+-- with Wrath-style NPC tracking categories.
+
+MINIMAPICONS_VERSION = 2
+
+-- =============================================================================
+-- Tracking spell definitions grouped by category
+-- =============================================================================
+
+local SPELL_CATEGORIES = {
+    { name = "Hunter Tracking", spells = {
+        "Track Beasts", "Track Humanoids", "Track Undead", "Track Hidden",
+        "Track Elementals", "Track Demons", "Track Giants", "Track Dragonkin",
+    }},
+    { name = "Class Abilities", spells = {
+        "Sense Undead", "Sense Demons",
+    }},
+    { name = "Professions", spells = {
+        "Find Herbs", "Find Minerals", "Find Treasure",
+    }},
+}
+
+-- NPC tracking categories (icons embedded from Wrath client)
+-- These don't filter minimap blips yet — future DLL hook work.
+local NPC_CATEGORIES = {
+    { name = "Auctioneer",    icon = "Interface\\Minimap\\Tracking\\Auctioneer" },
+    { name = "Banker",        icon = "Interface\\Minimap\\Tracking\\Banker" },
+    { name = "Battle Master", icon = "Interface\\Minimap\\Tracking\\BattleMaster" },
+    { name = "Class Trainer", icon = "Interface\\Minimap\\Tracking\\Class" },
+    { name = "Flight Master", icon = "Interface\\Minimap\\Tracking\\FlightMaster" },
+    { name = "Food & Drink",  icon = "Interface\\Minimap\\Tracking\\Food" },
+    { name = "Innkeeper",     icon = "Interface\\Minimap\\Tracking\\Innkeeper" },
+    { name = "Mailbox",       icon = "Interface\\Minimap\\Tracking\\Mailbox" },
+    { name = "Profession Trainer", icon = "Interface\\Minimap\\Tracking\\Profession" },
+    { name = "Reagent Vendor", icon = "Interface\\Minimap\\Tracking\\Reagents" },
+    { name = "Repair",        icon = "Interface\\Minimap\\Tracking\\Repair" },
+    { name = "Stable Master", icon = "Interface\\Minimap\\Tracking\\StableMaster" },
+    { name = "Ammunition",    icon = "Interface\\Minimap\\Tracking\\Ammunition" },
+}
+
+-- =============================================================================
+-- NPC tracking state (persists per session, no SavedVariables)
+-- =============================================================================
+
+local activeNpcCategories = {} -- name -> 1/nil
+
+-- =============================================================================
+-- Spellbook scanning
+-- =============================================================================
+
+local knownSpells = {} -- name -> spellbook index
+
+local function scanSpellbook()
+    knownSpells = {}
+    local trackable = {}
+    for _, cat in ipairs(SPELL_CATEGORIES) do
+        for _, s in ipairs(cat.spells) do
+            trackable[s] = 1
+        end
+    end
+    local i = 1
+    while GetSpellName(i, BOOKTYPE_SPELL) do
+        local name = GetSpellName(i, BOOKTYPE_SPELL)
+        if trackable[name] then
+            knownSpells[name] = i
+        end
+        i = i + 1
+    end
+end
+
+-- =============================================================================
+-- Active tracking detection
+-- =============================================================================
+
+local DEFAULT_ICON = "Interface\\Minimap\\Tracking\\None"
+
+local function isTrackingActive(spellId)
+    local active = GetTrackingTexture()
+    if not active then return nil end
+    if active == GetSpellTexture(spellId, BOOKTYPE_SPELL) then return 1 end
+    return nil
+end
+
+-- =============================================================================
+-- Dropdown menu
+-- =============================================================================
+
+local dropdown = CreateFrame("Frame", "MinimapIconsDropDown", UIParent, "UIDropDownMenuTemplate")
+
+UIDropDownMenu_Initialize(dropdown, function()
+    -- Spell tracking section
+    local hasSpells = nil
+    for _, cat in ipairs(SPELL_CATEGORIES) do
+        local found = {}
+        for _, spell in ipairs(cat.spells) do
+            if knownSpells[spell] then
+                table.insert(found, spell)
+            end
+        end
+        if table.getn(found) > 0 then
+            local title = {}
+            title.text = cat.name
+            title.isTitle = 1
+            title.notCheckable = 1
+            UIDropDownMenu_AddButton(title)
+
+            for _, spell in ipairs(found) do
+                local sid = knownSpells[spell]
+                local info = {}
+                info.text = spell
+                info.icon = GetSpellTexture(sid, BOOKTYPE_SPELL)
+                info.tCoordLeft = 0.0625
+                info.tCoordRight = 0.9
+                info.tCoordTop = 0.0625
+                info.tCoordBottom = 0.9
+                info.checked = isTrackingActive(sid)
+                info.func = function() CastSpell(sid, BOOKTYPE_SPELL) end
+                UIDropDownMenu_AddButton(info)
+            end
+            hasSpells = 1
+        end
+    end
+
+    -- NPC tracking section
+    local npcTitle = {}
+    npcTitle.text = "NPC Tracking"
+    npcTitle.isTitle = 1
+    npcTitle.notCheckable = 1
+    UIDropDownMenu_AddButton(npcTitle)
+
+    for _, cat in ipairs(NPC_CATEGORIES) do
+        local catName = cat.name
+        local info = {}
+        info.text = catName
+        info.icon = cat.icon
+        info.checked = activeNpcCategories[catName]
+        info.keepShownOnClick = 1
+        info.func = function()
+            if activeNpcCategories[catName] then
+                activeNpcCategories[catName] = nil
+            else
+                activeNpcCategories[catName] = 1
+            end
+        end
+        UIDropDownMenu_AddButton(info)
+    end
+
+    -- None option (cancel all tracking)
+    if hasSpells then
+        local none = {}
+        none.text = NONE or "None"
+        none.notCheckable = 1
+        none.func = function() CancelTrackingBuff() end
+        UIDropDownMenu_AddButton(none)
+    end
+end, "MENU")
+
+-- =============================================================================
+-- Take over native MiniMapTrackingFrame
+-- =============================================================================
+
+local function updateTrackingIcon()
+    local tex = GetTrackingTexture()
+    if tex then
+        MiniMapTrackingIcon:SetTexture(tex)
+    else
+        MiniMapTrackingIcon:SetTexture(DEFAULT_ICON)
+    end
+end
+
+-- Resize to match other minimap button icons (EasyLoot etc.)
+-- Native: frame 33x33 at TOPLEFT(-15,0), icon 26x26 at TOPLEFT(7,-6), border 64x64 at TOPLEFT
+-- Shrink border 64->52 (diff 12), shift frame right 6 and down 6 to compensate
+MiniMapTrackingFrame:SetWidth(32)
+MiniMapTrackingFrame:SetHeight(32)
+MiniMapTrackingFrame:ClearAllPoints()
+MiniMapTrackingFrame:SetPoint("TOPLEFT", Minimap, "TOPLEFT", -9, -6)
+MiniMapTrackingIcon:ClearAllPoints()
+MiniMapTrackingIcon:SetWidth(18)
+MiniMapTrackingIcon:SetHeight(18)
+MiniMapTrackingIcon:SetPoint("CENTER", MiniMapTrackingFrame, "CENTER", -1, 1)
+MiniMapTrackingBorder:ClearAllPoints()
+MiniMapTrackingBorder:SetWidth(52)
+MiniMapTrackingBorder:SetHeight(52)
+MiniMapTrackingBorder:SetPoint("TOPLEFT", MiniMapTrackingFrame, "TOPLEFT", 0, 0)
+
+-- Always show the tracking frame (native hides it when no tracking active)
+MiniMapTrackingFrame:Show()
+updateTrackingIcon()
+
+-- Prevent the native OnEvent from hiding the frame
+MiniMapTrackingFrame:SetScript("OnEvent", function()
+    if event == "PLAYER_AURAS_CHANGED" then
+        updateTrackingIcon()
+    end
+end)
+
+-- Left-click opens dropdown, right-click cancels tracking (native behavior)
+MiniMapTrackingFrame:SetScript("OnMouseUp", function()
+    if arg1 == "LeftButton" then
+        scanSpellbook()
+        ToggleDropDownMenu(1, nil, dropdown, MiniMapTrackingFrame, 0, 0)
+    elseif arg1 == "RightButton" then
+        CancelTrackingBuff()
+    end
+end)
+
+-- Keep native tooltip but add hint text
+MiniMapTrackingFrame:SetScript("OnEnter", function()
+    GameTooltip:SetOwner(this, "ANCHOR_BOTTOMLEFT")
+    GameTooltip:SetTrackingSpell()
+    if not GetTrackingTexture() then
+        GameTooltip:AddLine("Tracking")
+    end
+    GameTooltip:AddLine("Click to select tracking", 0.5, 0.5, 0.5)
+    GameTooltip:AddLine("Right-click to cancel", 0.5, 0.5, 0.5)
+    GameTooltip:Show()
+end)
+
+-- =============================================================================
+-- Events
+-- =============================================================================
+
+local events = CreateFrame("Frame")
+events:RegisterEvent("PLAYER_LOGIN")
+events:RegisterEvent("SPELLS_CHANGED")
+events:RegisterEvent("PLAYER_AURAS_CHANGED")
+
+events:SetScript("OnEvent", function()
+    if event == "PLAYER_LOGIN" or event == "SPELLS_CHANGED" then
+        scanSpellbook()
+    end
+    MiniMapTrackingFrame:Show()
+    updateTrackingIcon()
+end)
+
+-- =============================================================================
+-- Slash command
+-- =============================================================================
+
+SLASH_TRACKING1 = "/tracking"
+SlashCmdList["TRACKING"] = function()
+    scanSpellbook()
+    ToggleDropDownMenu(1, nil, dropdown, MiniMapTrackingFrame, 0, 0)
+end

src/minimapicons/addon/MinimapIcons.toc

@@ -0,0 +1,6 @@
+## Interface: 11200
+## Title: MinimapIcons
+## Notes: Minimap tracking spell dropdown
+## Version: 1.0
+
+MinimapIcons.lua