Optimize Equipment

    def self.optimize_equip( actor, equips )
      valid_equips = equips.compact.inject([]) { |r, eq|
        r << eq if actor.equippable?( eq ) ; r }
      equip_types = Scene_Equip::EQUIP_TYPE_MAX
      equips_by_type = Array.new( equip_types+1 ).map! { Array.new() }
      last_equips = []
      for i in 0..equip_types
        last_equips[i] = actor.equips[i]
        actor.change_equip( i, nil )
      end
      valid_equips += last_equips.compact
      valid_equips.each { |eq|
        case eq
        when RPG::Weapon
          equips_by_type[0]  << eq
        when RPG::Armor
          equips_by_type[eq.kind+1] << eq unless eq.kind == 3
        end
      }
      #//.sort! { |a, b| a.atk <=> b.atk } # // Weapons
      equips_by_type[0].each { |wp|
        dup_actor = Marshal.load( Marshal.dump( actor ) )
        dup_actor.change_equip_by_id( 0, wp.id, true )
        if dup_actor.atk > actor.atk
          dup_actor.change_equip_by_id( 0, 0, true )
          actor.change_equip_by_id( 0, 0, false )
          actor.change_equip_by_id( 0, wp.id, false )
        end
        dup_actor.change_equip( 0, 0, true )
        if actor.two_swords_style
          dup_actor.change_equip_by_id( 1, wp.id, true )
          if dup_actor.atk > actor.atk
            dup_actor.change_equip_by_id( 1, 0, true )
            actor.change_equip_by_id( 1, 0 )
            actor.change_equip_by_id( 1, wp.id )
          end
          dup_actor.change_equip_by_id( 1, 0, true )
        end
      }
      rng = actor.two_swords_style ? 2..equip_types : 1..equip_types
      for i in rng
        #.sort! { |a, b| a.def <=> b.def } # // Armor
        equips_by_type[i].each { |ar|
          dup_actor = Marshal.load( Marshal.dump( actor ) )
          dup_actor.change_equip( i, ar )
          if dup_actor.def > actor.def
            dup_actor.change_equip( i, nil ) ; actor.change_equip( i, ar )
          end
          dup_actor.change_equip( i, nil )
        }
      end
    end