class Game_Battler < Game_BattlerBase
  
  #--------------------------------------------------------------------------
  # ● 使用効果［ステート付加］：通常攻撃
  #--------------------------------------------------------------------------
  def item_effect_add_state_attack(user, item, effect)
    user.atk_states.each do |state_id|
      chance = effect.value1
      data_state_add = $data_state_add_normal
      item_state_add = data_state_add
      chance = set_chance1(user, item_state_add,chance) if data_state_add[:point]== 0    
      chance *= state_rate(state_id)
      chance *= user.atk_states_rate(state_id)
#~       chance *= luk_effect_rate(user)
      chance = set_chance1(user, item_state_add, chance) if data_state_add[:point]== 1   
      if rand < chance
        add_state(state_id)
        @result.success = true
      end
      p chance
    end
  end  
  
  #--------------------------------------------------------------------------
  # ● 使用効果［ステート付加］：通常
  #--------------------------------------------------------------------------
  def item_effect_add_state_normal(user, item, effect)
    
    chance = effect.value1

    data_state_add = item.is_a?(RPG::Skill) ? $data_state_add_skill : $data_state_add_item
    item_state_add = data_state_add[item.id]
    chance = set_chance1(user, item_state_add,chance) if check_add_state_condition(item,0,data_state_add)
    chance *= state_rate(effect.data_id) if opposite?(user)
#~     chance *= luk_effect_rate(user)      if opposite?(user)
    chance = set_chance1(user, item_state_add, chance) if check_add_state_condition(item,1,data_state_add)

    if rand < chance
      add_state(effect.data_id)
      @result.success = true
    end
  end  
  
  def paramater_chance(user, paras_id_user,paras_id_target)
    value_user = 0
    value_target = 0
    paras_id_user.each do |id|
      value_user += user.param(id)
    end  
    paras_id_target.each do |id|
      value_target += self.param(id)
    end      

    return [value_user,value_target]
    
    
  end  
  
  def check_add_state_condition(item,type,data_state_add)
    return true if data_state_add[item.id] && data_state_add[item.id][:point]== type
    return false
  end  
  
  def set_chance1(user, item_state_add,chance)
    return 0 if chance == 0
    return chance if chance >= 1
    return chance unless item_state_add[:type]
    paras_user = item_state_add[:depend_user]
    paras_target = item_state_add[:depend_target]
    
    paraarray = paramater_chance(user, paras_user,paras_target)
    scbarray = item_state_add[:bound]
    dp = (paraarray[0]-paraarray[1])
    deg = item_state_add[:degree]
    if item_state_add[:type] == 1      
      a = (dp >= 0) ? (scbarray[1] - chance) : (chance - scbarray[0])
      pi = Math::PI  
      chance = 2 * a * (Math.atan(dp * deg)) / pi + chance

    elsif item_state_add[:type] == 2  
      if dp >= 0
        a = (scbarray[1] - chance)
        chance = a * sigmoid_ex(deg,dp) + chance
      else
        a = (chance - scbarray[0])
        chance = a * sigmoid_ex(deg,dp) + chance
      end      
    else   
      chance = deg * dp + chance
      
    end   

    return chance
  end  
  
  def sigmoid_ex(deg,x)
    return 2.0 / (1 + Math.exp(-x * deg)) - 1.0
    
    
  end  

end