public class ZombieController extends Script {
    int state = 0; //0 - delay 1 - run 2 - attack
    MoveComponent move;
    SearchTargetComponent search;

    public void initialize() {
        move = gameObject.getScript(MoveComponent.class);
        search = gameObject.getScript(SearchTargetComponent.class);
    }

    public void update(float delta) {
        if(search.haveTarget()) {
            if(search.targetIsClose(0.5f)) {
                state = 2;
            } else {
                move.moveTo(search.getTarget());
                state = 1;
            }
        } else {
            state = 0;
        }

        //run animation, damage on the target, etc...
    }
}