#encoding:utf-8
#==============================================================================
# ■ Window_SkillList
#------------------------------------------------------------------------------
# 　技能画面中，显示技能的窗口。
#==============================================================================

class Window_SkillList < Window_Selectable
  #--------------------------------------------------------------------------
  # ● 初始化对象
  #--------------------------------------------------------------------------
  def initialize(x, y, width, height)
    super
    @actor = nil
    @stype_id = 0
    @data = []
  end
  #--------------------------------------------------------------------------
  # ● 设置角色
  #--------------------------------------------------------------------------
  def actor=(actor)
    return if @actor == actor
    @actor = actor
    refresh
    self.oy = 0
  end
  #--------------------------------------------------------------------------
  # ● 设置技能类型 ID 
  #--------------------------------------------------------------------------
  def stype_id=(stype_id)
    return if @stype_id == stype_id
    @stype_id = stype_id
    refresh
    self.oy = 0
  end
  #--------------------------------------------------------------------------
  # ● 获取列数
  #--------------------------------------------------------------------------
  def col_max
    return 2
  end
  #--------------------------------------------------------------------------
  # ● 获取项目数
  #--------------------------------------------------------------------------
  def item_max
    @data ? @data.size : 1
  end
  #--------------------------------------------------------------------------
  # ● 获取技能
  #--------------------------------------------------------------------------
  def item
    @data && index >= 0 ? @data[index] : nil
  end
  #--------------------------------------------------------------------------
  # ● 获取选择项目的有效状态
  #--------------------------------------------------------------------------
  def current_item_enabled?
    enable?(@data[index])
  end
  #--------------------------------------------------------------------------
  # ● 查询列表中是否含有此技能
  #--------------------------------------------------------------------------
  def include?(item)
    item && item.stype_id == @stype_id
  end
  #--------------------------------------------------------------------------
  # ● 查询此技能是否可用
  #--------------------------------------------------------------------------
  def enable?(item)
    @actor && @actor.usable?(item)
  end
  #--------------------------------------------------------------------------
  # ● 生成技能列表
  #--------------------------------------------------------------------------
  def make_item_list
    @data = @actor ? @actor.skills.select {|skill| include?(skill) } : []
  end
  #--------------------------------------------------------------------------
  # ● 返回上一个选择的位置
  #--------------------------------------------------------------------------
  def select_last
    select(@data.index(@actor.last_skill.object) || 0)
  end
  #--------------------------------------------------------------------------
  # ● 绘制项目
  #--------------------------------------------------------------------------
  def draw_item(index)
    skill = @data[index]
    if skill
      rect = item_rect(index)
      rect.width -= 4
      draw_item_name(skill, rect.x, rect.y, enable?(skill))
      draw_skill_cost(rect, skill)
    end
  end
  #--------------------------------------------------------------------------
  # ● 绘制技能的使用消耗
  #--------------------------------------------------------------------------
  def draw_skill_cost(rect, skill)
    if @actor.skill_tp_cost(skill) > 0
      change_color(tp_cost_color, enable?(skill))
      draw_text(rect, @actor.skill_tp_cost(skill), 2)
    elsif @actor.skill_mp_cost(skill) > 0
      change_color(mp_cost_color, enable?(skill))
      draw_text(rect, @actor.skill_mp_cost(skill), 2)
    end
  end
  #--------------------------------------------------------------------------
  # ● 更新帮助内容
  #--------------------------------------------------------------------------
  def update_help
    @help_window.set_item(item)
  end
  #--------------------------------------------------------------------------
  # ● 刷新
  #--------------------------------------------------------------------------
  def refresh
    make_item_list
    create_contents
    draw_all_items
  end
end