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Further modularization of HealBot codebase by splitting core logic into dedicated controller and view components

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Bluewhale1337
2026-06-25 19:33:48 +02:00
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**HealBotBlue**
By Bluewhale.
Original Vanilla HealBot, while being a staple healing addon in Wrath and later expansions, was in its infancy during Vanilla WoW. It was a memory and CPU hog that ate up resources, featured a clunky UI, and offered limited functions. To fix all of the above while still using it as a base framework, I refactored the entire codebase. The monolithic code structure was split to follow a more modern approach (MVC design pattern), making it more stable and easily editable. Additionally, the inefficient AURA scanning was replaced with lightweight (Observer Pattern) reactive programming. It now updates only what is necessary when a trigger fires, rather than performing clumsy, continuous scans of a 40-man raid. By doing so, I managed to throttle down CPU and memory usage significantly, placing it on par with modern addons. Additional functionalities are being added over time to provide a holistic, healer-centered raid frame.
Original HealBot, while being a staple healing addon in Wrath and later expansions, was in its infancy during Vanilla WoW. It was a memory and CPU hog that ate up resources, featured a clunky UI, and offered limited functions. To fix all of the above while still using it as a base framework, I refactored the entire codebase. The monolithic code structure was split to follow a more modern approach (MVC design pattern), making it more stable and easily editable. Additionally, the inefficient AURA scanning was replaced with lightweight (Observer Pattern) reactive programming. It now updates only what is necessary when a trigger fires, rather than performing clumsy, continuous scans of a 40-man raid. By doing so, I managed to throttle down CPU and memory usage significantly, placing it on par with modern addons. Additional functionalities are being added over time to provide a holistic, healer-centered raid frame.
> **NOTE:** For HealBot to work correctly, the **Selfcast** feature in WoW options needs to be disabled.
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### Change Log
**v1.3**
* **Monolithic Code Modularization:** Split the massive, single-file options system (`HealBot_Options.xml`/`HealBot_Options.lua`) into 7 dedicated, content-named panel subfiles (`General`, `Spells`, `Healing`, `CDC`, `Skins`, `Buffs`, and `Chat`) to improve codebase modularity and stability.
* **Monolithic Code Modularization (Options):** Split the massive, single-file options system (`HealBot_Options.xml`/`HealBot_Options.lua`) into 7 dedicated, content-named panel subfiles (`General`, `Spells`, `Healing`, `CDC`, `Skins`, `Buffs`, and `Chat`) to improve codebase modularity and stability.
* **Core Code Decoupling (MVC & Observer Pattern):** Modularized `HealBot.lua` and `HealBot_Action.lua` by decoupling them into dedicated service files: `Range`, `Comms`, `Aura`, `Spells`, `Events` controllers, and `Layout`, `Tooltip` views.
* **Scope Resolution Fix:** Promoted `HealBot_Options_ComboButtons_Button` to global scope in the base options file to resolve a `nil` comparison error when loading spell settings.
* **Global Scoping & Variable Promotion:** Promoted `CalcEquipBonus`, `HealBot_EquipChangeTimer`, `HealValue`, `InitSpells`, and `Delay_RecalcParty` to global scope in `HealBot.lua` to ensure cross-module visibility.
* **CTRA Resurrection Cancel Bug Fix:** Fixed a nil table indexing crash in the CTRA `RESNO` message handler in `HealBot_Controller_Comms.lua`.
* **Lua 5.1 Compatibility Update:** Forwarded observer parameters directly via vararg forwarding (`...`) in `HealBot_Model.lua` to avoid runtime errors with the deprecated `arg` table.
* **Core Options Layout Correction:** Relocated the "Defaults" and "Close" buttons back into the parent options frame's container, ensuring they display consistently at the bottom of all configuration tabs.
* **Skins Grid Alignment:** Fixed layout overlaps on the Skins panel by setting explicit width/height sizes (`123 x 17`) on the opacity sliders and reorganizing all 13 sliders into a clean, uniform 2-column grid.
* **Startup Refresh Optimization:** Resolved initial loading lag where action bars would be missing by forcing an immediate UI refresh (`HealBot_RecalcSpells()`) once spell data loads.