Time for action – Switching states

Three states, Seeking , Attacking , and Frozen . The first thing we need to do is tell our actor which state to start in.

1. To do that, we'll simply add the auto keyword to the beginning of our Seeking state:

   auto state Seeking

Only one state can be declared with the auto keyword, and this state is the default state for that actor. We want ours to do the same thing it did before, automatically start moving toward the player when it spawns.

1. Now that we're in the Seeking state, we need to tell the actor when to move into the Attacking state. We'll do this in the Tick function by comparing the distance between the actor and its enemy:

   function Tick(float DeltaTime)

   {
     local vector NewLocation;
   
     if(Enemy == none)
       GetEnemy();
   
     if(Enemy != none)
     {
       NewLocation = Location;
       NewLocation += normal(Enemy.Location - Location) * MovementSpeed * DeltaTime;
       SetLocation(NewLocation);
   
       if(VSize(NewLocation - Enemy.Location) < AttackDistance)
         GoToState...