combat

Returns true if the UNIT is in combat, otherwise false.

combat([UnitId]) : boolean
combat([UnitId]) : boolean

1. See Wowpedia for more information on WoW Unit IDs. Will default to 'player' if nothing is specified as an argument.

Example

Cast Frostbolt if my target is in fact in combat.

if combat('target') then 
  return cast(Frostbolt, 'target')
end
if combat('target') then 
  return cast(Frostbolt, 'target')
end 

Note

This uses UnitAffectingCombat(unit), returning boolean.