【进阶实战】行会镖车的护送与劫镖：镖车状态机封装

local CAR = { IDLE = 1, RUN = 2, DONE = 3, ROBBED = 4 }
local function carCanMove(from, to)
    local ok = (from == CAR.IDLE and to == CAR.RUN)
        or (from == CAR.RUN and to == CAR.DONE)
        or (from == CAR.RUN and to == CAR.ROBBED)
    return ok
end
local function startEscort(actor)
    actor = getplayerbyname(actor)
    local st = tonumber(getplayvar(actor, "HUMAN", "EscortState")) or CAR.IDLE
    if not carCanMove(st, CAR.RUN) then
        sendmsg(actor, 1, "当前状态不能发车。")
        return
    end
    setplayvar(actor, "HUMAN", "EscortState", CAR.RUN, 1)
    setplayvar(actor, "HUMAN", "EscortStart", os.time(), 1)
    setontimer(actor, 13, 480000, 1, 0)
    sendcentermsg(actor, 249, 255, "镖车已出发，护送全程 8 分钟。", 0, 5, "")
end

local function robCar(robberName, ownerName)
    local robber = getplayerbyname(robberName)
    local owner = getplayerbyname(ownerName)
    local st = tonumber(getplayvar(owner, "HUMAN", "EscortState")) or CAR.IDLE
    if st ~= CAR.RUN then
        return
    end
    setplayvar(owner, "HUMAN", "EscortState", CAR.ROBBED, 1)
    setofftimer(owner, 13)
    giveitem(robber, "金币", 400000, 0, "劫镖所得")
    setplayvar(robber, "HUMAN", "RedName", 200, 1)
    sendmsg(owner, 1, "镖车被 " .. robberName .. " 劫走，押金 50 万损失。")
end
local function ontimer13(actor)
    actor = getplayerbyname(actor)
    setplayvar(actor, "HUMAN", "EscortState", CAR.DONE, 1)
    giveitem(actor, "金币", 800000, 0, "押镖成功奖励")
    sendmsg(actor, 1, "镖车安全抵达，获得 80 万金币。")
end