skill_items = {
  28 => {41=>1},              #28号技能消耗41号物品1个
  29 => {41=>2},              #29号技能消耗41号物品2个
  30 => {41=>1},              #30号技能消耗41号物品1个
  31 => {41=>2},              #31号技能消耗41号物品2个
  32 => {46=>1},              #32号技能消耗46号物品1个，以此类推
  38 => {41=>2},
  39 => {41=>4},
  40 => {41=>2},
  41 => {41=>4},
  42 => {46=>2},
  49 => {40=>1},
  55 => {40=>1},
  60 => {42=>1,46=>1},        #60号技能消耗42号物品1个和46号物品1个
  61 => {42=>2},
  62 => {46=>3},
  66 => {42=>2,46=>2},
  67 => {42=>4},
  68 => {46=>5},
  71 => {41=>1},
  72 => {46=>1},
  73 => {40=>1},
  74 => {48=>1},
  75 => {46=>2},
  77 => {41=>2},
  78 => {46=>2},
  79 => {40=>2},
  80 => {48=>2},
  81 => {46=>4},
  86 => {49=>1},
  87 => {49=>1},
  91 => {40=>2},
  92 => {42=>1},
  93 => {43=>1},
  94 => {41=>1},
  95 => {44=>1},
  96 => {49=>2},
  97 => {49=>2},
  98 => {40=>1},
  101 => {40=>4}
} 

class Game_Battler
  def item_condition?(skill_id)
    skill_items = skill_items[skill_id]
    return true if skill_items.nil?
    skill_items.keys.each do |key|
      return false if $game_party.item_number(key) < skill_items[key]
    end
    return true
  end
end