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feat: add UnitIsVisible for entity visibility checks

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Returns true when the unit's entity exists in the entity manager
(within UPDATE_OBJECT range). Unlike UnitExists which falls back to
party member data, UnitIsVisible only returns true for entities that
can actually be rendered on screen.

Used by nameplate addons and proximity addons to check if a unit is
within visual range.

Session 14 commit #100: 95 new API functions, 113 new events.
This commit is contained in:
Kelsi 2026-03-21 11:49:23 -07:00
parent be841fb3e1
commit d575c06bc1
1 changed files with 9 additions and 0 deletions
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9
src/addons/lua_engine.cpp
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@ -540,6 +540,14 @@ static int lua_UnitDetailedThreatSituation(lua_State* L) {
return 5;
}
// UnitIsVisible(unit) → boolean (entity exists in the client's entity manager)
static int lua_UnitIsVisible(lua_State* L) {
const char* uid = luaL_optstring(L, 1, "target");
auto* unit = resolveUnit(L, uid);
lua_pushboolean(L, unit != nullptr);
return 1;
}
// UnitGroupRolesAssigned(unit) → "TANK", "HEALER", "DAMAGER", or "NONE"
static int lua_UnitGroupRolesAssigned(lua_State* L) {
auto* gh = getGameHandler(L);
@ -3341,6 +3349,7 @@ void LuaEngine::registerCoreAPI() {
{"UnitIsTapped", lua_UnitIsTapped},
{"UnitIsTappedByPlayer", lua_UnitIsTappedByPlayer},
{"UnitIsTappedByAllThreatList", lua_UnitIsTappedByAllThreatList},
{"UnitIsVisible", lua_UnitIsVisible},
{"UnitGroupRolesAssigned", lua_UnitGroupRolesAssigned},
{"UnitCanAttack", lua_UnitCanAttack},
{"UnitCanCooperate", lua_UnitCanCooperate},