【进阶实战】裁决之杖合成：先扣后发的道具复制防线

local function composeSword(actor)
    actor = getplayerbyname(actor)
    local last = tonumber(getplayvar(actor, "HUMAN", "ComposeAt")) or 0
    if os.time() - last < 3 then
        sendmsg(actor, 1, "操作过快，请稍候 3 秒。")
        return
    end
    if not takeitem(actor, "裁决之杖碎片", 3) then
        sendmsg(actor, 1, "碎片不足：合成需要 3 片。")
        return
    end
    if not takeitem(actor, "金条", 50) then
        giveitem(actor, "裁决之杖碎片", 3)
        sendmsg(actor, 1, "金条不足，碎片已退回。")
        return
    end
    setplayvar(actor, "HUMAN", "ComposeAt", os.time(), 1)
    giveitem(actor, "裁决之杖", 1, 1)
    sendmsg(actor, 1, "合成成功，获得绑定裁决之杖。")
end

local function rollbackCompose(actor, step)
    actor = getplayerbyname(actor)
    if step >= 2 then
        giveitem(actor, "金条", 50)
    end
    if step >= 1 then
        giveitem(actor, "裁决之杖碎片", 3)
    end
    sendmsg(actor, 1, "合成异常中止，材料已按步骤回滚。")
end