【后端接口】比奇新手护送：跟随距离判定与护送奖励的接口

local escortOn = {}
function startNewbieEscort(actor)
    local player = class(actor)
    escortOn[player:GetName()] = os.time()
    setplayvar(actor, "HUMAN", "ESCORT_NP", 1, 1)
    sendmsg(actor, 0, "护送村长前往比奇城，保持在5格内")
    setontimer(actor, 84, 12, 20)
end
function ontimer84(actor)
    local player = class(actor)
    local st = getplayvar(actor, 2, "ESCORT_NP")
    if st ~= 1 then return end
    local last = escortOn[player:GetName()]
    if last ~= nil and os.time() - last > 60 then
        setplayvar(actor, "HUMAN", "ESCORT_NP", 0, 1)
        sendmsg(actor, 0, "护送超时，任务已重置，可重新接取")
    end
end

function escortArrive(actor)
    local player = class(actor)
    local t0 = tonumber(getplayvar(actor, 2, "ESCORT_TS") or "0")
    local cost = os.time() - t0
    local reward = "金币|10000"
    if cost <= 240 then
        reward = "金币|10000;祝福油|1"
    end
    sendmail(actor, 0, "新手护送奖励", "用时" .. cost .. "秒", reward)
    setplayvar(actor, "HUMAN", "ESCORT_NP", 0, 1)
end