NPC.SetEnemy

{{Lua_function |
  function_name        = NPC:SetEnemy|
  arguments            = {{Arg|Entity}} Enemy[, {{Arg|Boolean}} ???]|
  description          = Tells an NPC to attack an enemy |
  object               = {{Arg|Npc}} |
  lua_state            = {{Serverside}} |
}}

==Examples==
{{Lua_example |
  description          = Example use of setting an enemy|
  useOn                = {{Serverside}}|
  code                 = <lua>function SWEP:PrimaryAttack()

	if CLIENT || (self.NPC == nil) || !self.NPC:IsValid() || !self.NPC:IsNPC() then return end

	local trace = self.Owner:GetEyeTrace()
	if !trace.Entity:IsValid() and trace.Entity:IsPlayer() then return end

	self.NPC:SetEnemy(trace.Entity)
	self.Owner:PrintMessage( HUD_PRINTTALK, "Enemy set")
end</lua> |
  output = The NPC you use this one will be the enemy of self.NPC |
}}


==Additional Notes==
* This will only work if it's being used on something it has a hate relationship too. It will not attack an ally.
* In my example, self.NPC was already set up. It was an object grabbed through another function.