【进阶实战】Lua error层级参数：烈火剑法报错定位到调用行

local function check(actor, dmg)
    if dmg <= 0 then
        error("伤害必须为正")          -- 日志指向本行，排查翻层
    end
end
local function castFire(actor, dmg)
    check(actor, dmg)
    sendmsg(actor, 1, "烈火剑法 " .. dmg .. " 点伤害")
end

local function check(actor, dmg)
    if dmg <= 0 then
        error("烈火剑法伤害非法", 2)    -- level=2 挂到调用行
    end
end
local function castFire(actor, dmg)
    local ok, err = pcall(check, actor, dmg)
    if not ok then
        sendmsg(actor, 1, "出手失败：" .. err)
        return
    end
    sendmsg(actor, 1, "烈火剑法 " .. dmg .. " 点伤害")
end