java_import 'org.apollo.game.model.entity.Mob'

module MobCombatState
  def get_combat_state
    @combat_state = CombatState.new(self, true) if @combat_state.nil?

    @combat_state
  end
end

Mob.include MobCombatState

private

class CombatState
  attr_reader :target

  def initialize(mob, supports_weapon = true)
    @mob             = mob
    @supports_weapon = supports_weapon
    reset
  end

  def reset
    @target         = nil
    @next_attack    = nil
    @queued_attacks = []
  end

  def will_attack?
    attacking? && next_attack(true).speed >= @mob.attack_timer
  end

  def attacking?
    !target.nil? && @mob.attacking
  end

  def target=(target)
    @mob.reset_interacting_mob
    @mob.interacting_mob = target unless target.nil?
    @target              = target
  end

  def queue_attack(attack)
    @queued_attacks.push(attack)
  end

  def next_attack(peek = false)
    if @queued_attacks.size > 0
      peek ? @queued_attacks.last : @queued_attacks.pop
    else
      weapon = EquipmentUtil.equipped_weapon @mob

      if @mob.using_special && weapon.special_attack?
        weapon.special_attack
      else
        combat_style = weapon.weapon_class.selected_style @mob
        combat_style.attack
      end
    end
  end
end