some pieces of games

Logic.groovy

    void update(float tpf) {
        super.update(tpf)
        // lets process a message
        ClientMessage mess = messages.poll()
        if (mess != null) {
            switch (mess.class) {
                case ActionRequestMessage:
                    if (players.get(mess.id).name != null) // if logged in
                        players.get(mess.id).actions << (mess as ActionRequestMessage)
                    break
                case LoginMessage:
                    def m = mess as LoginMessage
                    if (LoginService.authorized(m.username, m.password)) {
                        players.get(m.id).name = m.username
                        actors << players.get(m.id)
                    }
                    break
            }
        }
        if (actors.isEmpty())
            return
        time += tpf
        if (time >= roundTimeout || notReadyActors.isEmpty()) {
            actors.each { it.energy = Math.max(MAX_ENERGY, it.speed + it.energy) }
            time = 0
            notReadyActors.clear()
            notReadyActors += actors
            log.info "Round ended: $roundNo"
            roundNo++
        }
        notReadyActors.each { performActions(it) }
        notReadyActors.removeAll { it.energy == 0 }
    }

    def performActions(Actor actor) {
        actor.actions.each { action ->
            if (actor.energy >= action.type.cost) {
                switch (action.type) {
                    case ActionType.walk:
                    if (action.target.isNear(actor.pos)
                            && terrain[action.target.y][action.target.x] == 1)
                        actor.pos = action.target
                        break
                    case ActionType.wait:
                        break
                }
                actor.energy -= action.type.cost
            }
        }
    }