【引擎触发】屠龙刀任务：传说武器的任务链与铸造仪式

---killmon: 击杀怪物触发，标记虹魔教主击杀
function killmon(actor, monName)
    if monName == "虹魔教主" then
        setplayvar(actor, "HUMAN", "KillHongmo", 1, 1)
        sendmsg(actor, 1, "考验完成：虹魔教主已伏诛")
    end
end

---任务提交：校验当前环的完成条件
function DragonTask.submit(actor)
    local step = tonumber(getplayvar(actor, 2, "DragonStep")) or 1
    if step == 1 and not checkitemw(actor, "铸造图谱", 1) then
        sendmsg(actor, 1, "缺少铸造图谱")
        return false
    end
    if step == 2 and not checkitemw(actor, "玄铁", 10) then
        sendmsg(actor, 1, "玄铁不足 10 块")
        return false
    end
    if step == 3 and (getplayvar(actor, 2, "KillHongmo") or "") == "" then
        sendmsg(actor, 1, "尚未击败虹魔教主")
        return false
    end
    return DragonTask.advance(actor, step)
end

---终环：出资 500 万金币铸造屠龙
function DragonTask.advance(actor, step)
    if step < 4 then
        setplayvar(actor, "HUMAN", "DragonStep", step + 1, 1)
        sendmsg(actor, 1, "屠龙任务进入下一环")
        return true
    end
    giveitem(actor, "屠龙", 1)
    setranklevelname(actor, "屠龙拥有者")
    setplayvar(actor, "HUMAN", "DragonStep", "", 1)
    QF_Broadcast("锻造完成！" .. actor:GetName() .. " 获得了传说中的屠龙刀！")
    return true
end