【框架设计】技能遗忘与重修：技能栏位管理与重修费用的框架设计

function forget(actor, skillId)
    delskill(actor, skillId)
    local ledger = getplayvar(actor, "HUMAN", "SKILL_LEDGER") or ""
    local put = tonumber(matchPut(ledger, skillId) or "0")
    local back = math.floor(put / 2)
    local free = tonumber(getplayvar(actor, "HUMAN", "SKILL_FREE") or "0")
    setplayvar(actor, "HUMAN", "SKILL_FREE", free + back, 1)
    setplayvar(actor, "HUMAN", "SKILL_LEDGER", removePut(ledger, skillId), 1)
    sendmsg(actor, 0, "遗忘成功，返还 " .. back .. " 点技能点")
end

function relearn(actor, skillId)
    local put = tonumber(matchPut(getplayvar(actor, "HUMAN", "SKILL_LEDGER") or "", skillId) or "0")
    local fee = put * 2500
    if not checkitemw(actor, "金币", fee) then
        sendmsg(actor, 0, "重修需 " .. fee .. " 金币")
        return
    end
    takeitem(actor, "金币", fee)
    addskill(actor, skillId, math.max(1, math.floor(put / 100)))
    sendmsg(actor, 0, "重修完成，技能已恢复")
end