WoW:API UnitIsFriend

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This function will determine whether two units are friendly to each other (i.e. able to help each other in combat).

isFriend = UnitIsFriend("unit","otherunit");

Arguments

unit

String - A valid unit.

otherunit

String - A valid unit.

Returns

IsFriend

Boolean flag - 1 if otherunit is friendly to unit; nil otherwise.

Example

The following snippet outputs a message when the player has a hostile target.

if UnitExists("target") and not UnitIsFriend("player", "target") then
 print(UnitName("target") .. " is evil! Run!");
end