In "Vanilla" and early versions of WoW Classic , the game server did not send absolute health values (e.g., "1,200/1,200") to the client for enemy NPCs; it only sent percentages (0–100%). functions as a persistent database and calculation engine to solve this:
[1.12. 1] Displays current and maximum health numbers for targeted mobs. Read this in other languages: English, Português. MobHealth.lua
World of Warcraft Vanilla 1.12.1 AddOn MobHealth ... - GitHub In "Vanilla" and early versions of WoW Classic
: Once a mob's health is calculated, MobHealth.lua saves this data to the player's SavedVariables folder . This ensures that the next time the player targets that specific NPC type at that level, the health is immediately visible without needing to deal damage again. MobHealth.lua