Mobhealth.lua -

World of Warcraft Vanilla 1.12.1 AddOn MobHealth ... - GitHub

: The script tracks the damage dealt to a target and compares it to the percentage drop in the target’s health bar. If a player deals 100 damage and the mob's health drops by 10%, the script calculates the total health as 1,000 HP. MobHealth.lua

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: World of Warcraft Vanilla 1