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feat: add WoW event system for Lua addons

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Implement the WoW-compatible event system that lets addons react to
gameplay events in real-time:

- RegisterEvent(eventName, handler) — register a Lua function for an event
- UnregisterEvent(eventName, handler) — remove a handler
- fireEvent() dispatches events to all registered handlers with args

Currently fired events:
- PLAYER_ENTERING_WORLD — after addons load and world entry completes
- PLAYER_LEAVING_WORLD — before logout/disconnect

Events are stored in a __WoweeEvents Lua table, dispatched via
LuaEngine::fireEvent() which is called from AddonManager::fireEvent().
Error handling logs Lua errors without crashing.

Updated HelloWorld addon to use RegisterEvent for world entry/exit.
This commit is contained in:
Kelsi 2026-03-20 11:23:38 -07:00
parent 7da1f6f5ca
commit 510f03fa32
6 changed files with 148 additions and 14 deletions
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34
Data/interface/AddOns/HelloWorld/HelloWorld.lua
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@ -1,18 +1,24 @@
-- HelloWorld addon — test the WoWee addon system
print("|cff00ff00[HelloWorld]|r Addon loaded! Lua 5.1 is working.")
print("|cff00ff00[HelloWorld]|r GetTime() = " .. string.format("%.2f", GetTime()) .. " seconds")
-- Query player info (will show real data when called after world entry)
local name = UnitName("player")
local level = UnitLevel("player")
local health = UnitHealth("player")
local maxHealth = UnitHealthMax("player")
local gold = math.floor(GetMoney() / 10000)
-- Register for game events
RegisterEvent("PLAYER_ENTERING_WORLD", function(event)
local name = UnitName("player")
local level = UnitLevel("player")
local health = UnitHealth("player")
local maxHealth = UnitHealthMax("player")
local _, _, classId = UnitClass("player")
local gold = math.floor(GetMoney() / 10000)
print("|cff00ff00[HelloWorld]|r Player: " .. name .. " (Level " .. level .. ")")
if maxHealth > 0 then
print("|cff00ff00[HelloWorld]|r Health: " .. health .. "/" .. maxHealth)
end
if gold > 0 then
print("|cff00ff00[HelloWorld]|r Gold: " .. gold .. "g")
end
print("|cff00ff00[HelloWorld]|r Welcome, " .. name .. "! (Level " .. level .. ")")
if maxHealth > 0 then
print("|cff00ff00[HelloWorld]|r Health: " .. health .. "/" .. maxHealth)
end
if gold > 0 then
print("|cff00ff00[HelloWorld]|r Gold: " .. gold .. "g")
end
end)
RegisterEvent("PLAYER_LEAVING_WORLD", function(event)
print("|cff00ff00[HelloWorld]|r Goodbye!")
end)