A World of Warcraft 1.12 (Vanilla) addon that displays scrolling combat text around the player's character model. Originally by Mik, maintained by Athene.

Interface: 11200 | Version: 4.43

Features

Scrolling combat text across three display areas: Incoming (right), Outgoing (left), and Notification (center)
Damage, heals, DoTs, HoTs, misses, dodges, parries, blocks, resists, absorbs, reflects, and more
Buff/debuff gain and fade notifications
Power gains and losses (mana, rage, energy)
Combo points, honor, reputation, skill, and experience gains
Killing blow notifications (PC and NPC)
Environmental damage (drowning, falling, fire, lava, fatigue, slime)
Spell icons displayed alongside scrolling text
Class-colored unit names
Configurable profiles with 100+ event settings
Customizable animation styles (Straight, Left Parabola, Right Parabola) and scroll directions (Up, Down)
Sticky text for crits and important events
Event merging to reduce clutter in heavy combat
Event suppression via configurable search patterns
Health/mana threshold triggers with per-class filtering
Search pattern triggers for custom event matching
Four locales: English, French, German, Russian

Addon Packages

MikScrollingBattleText (Core)

The main addon. Parses combat log events, formats text, and animates scrolling messages.

MikScrollingBattleTextOptions (Options UI)

Load-on-demand options panel. Only loaded when the user opens settings via /msbt.

Installation

Copy both MikScrollingBattleText/ and MikScrollingBattleTextOptions/ into your Interface/AddOns/ directory.

Interface/
  AddOns/
    MikScrollingBattleText/
    MikScrollingBattleTextOptions/

Slash Commands

/msbt — Open the options UI

Command	Description
`/msbt reset`	Reset the current profile to defaults
`/msbt disable`	Disable the addon
`/msbt enable`	Enable the addon
`/msbt version`	Show the current version
`/msbt stats`	Report table recycling statistics
`/msbt search <filter>`	Set a filter for searching event types
`/msbt debug`	Toggle debug mode
`/msbt help`	Show command usage

Nampower / SuperWoW / UnitXP SP3 Integration

When these enhanced client mods are detected, MSBT automatically switches from string-based combat log parsing to structured event handling for significantly better performance in heavy combat scenarios (raids, AoE, battlegrounds).

What Changes

Nampower: Registers for structured events (SPELL_DAMAGE_EVENT_SELF, AUTO_ATTACK_SELF, SPELL_HEAL_ON_SELF, etc.) that provide pre-parsed combat data. Redundant CHAT_MSG_* events are unregistered to avoid duplicates. Enables NP_EnableAutoAttackEvents, NP_EnableSpellHealEvents, and NP_EnableSpellEnergizeEvents CVars.
SuperWoW: Provides O(1) unit lookups by name via UnitExists(name) (replacing O(n) raid/party iteration) and SpellInfo(spellId) for spell icon resolution.
UnitXP SP3: Detected for compatibility; used for GUID-based unit resolution.

Fallback

When none of these mods are present, the addon falls back to the original string-parsing pipeline with no changes in behavior.

Verification

-- Check detection status in-game:
/run MikSBT.Print("NP="..tostring(MikCEH.hasNampower).." SW="..tostring(MikCEH.hasSuperWoW).." UXP="..tostring(MikCEH.hasUnitXP))

Performance Optimizations

Upvalue caching: Frequently called standard library functions (string.find, string.gsub, table.insert, table.getn, GetTime, etc.) are cached as local variables
Dispatch table: Combat event routing uses O(1) table lookup instead of an if/elseif chain
SpellId icon cache: When spellIds are available (via Nampower/SuperWoW), icons are resolved directly and cached, bypassing Babble-Spell dictionary lookups and tooltip scanning
Event throttling: UNIT_HEALTH and UNIT_MANA trigger checks are throttled to 150ms intervals
Table recycling: MikTRO (Table Recycler Object) pools and reuses table allocations to reduce garbage collection pressure

Architecture

Global Namespaces

Namespace	Purpose
`MikSBT`	Main addon: display, animation, profiles, event routing, slash commands
`MikCEH`	Combat Event Helper: parses combat events into structured data
`MikTRO`	Table Recycler Object: memory pool for table reuse

Event Processing Pipeline

WoW CHAT_MSG_* events (or Nampower structured events)
  -> MikCEH.OnEvent() / MikCEH.OnNampowerEvent()
  -> ParseCombatEvents() dispatch table (or Nampower handler)
  -> Creates CombatEventData tables
  -> MikSBT.CombatEventsHandler()
  -> Formats text with templates (%a=amount, %n=name, %s=spell, %t=type)
  -> Queues animation event
  -> MikSBT.OnUpdateAnimationFrame() renders scrolling text

Bundled Libraries

AceLibrary — Addon framework skeleton
AceLocale-2.2 — Localization management
Babble-Spell-2.2 — Spell name database for icon lookups (~10K lines)

Saved Variables

MikSBT_Save — Stores named profiles containing event settings, triggers, suppressions, display positions, and font settings. Profiles support versioning and migration between addon versions.

Development

No build step — files are loaded directly by the WoW client via TOC manifests
No test framework — testing is done manually in the WoW client
The Lua environment is WoW's embedded Lua 5.0/5.1 (not standard Lua 5.4)
IDE warnings about "undefined globals" (CreateFrame, GetLocale, DEFAULT_CHAT_FRAME, arg1, event, etc.) are false positives — these are provided by the WoW runtime
The wow-api-type-definitions/ submodule provides WoW API type stubs for IDE autocompletion (sumneko.lua language server)

Optional Dependency

SW_FixLogStrings — Fixes combat log string formatting issues on some server implementations

License

This addon is distributed for use with World of Warcraft 1.12 private servers. Original work by Mik, community maintained.