【引擎触发】毒蛇山谷毒雾：毒雾周期的触发设计

setontimerex(207, 600)
local fogOn = false
function ontimer207()
    fogOn = not fogOn
    setsysvar("POISON_FOG", fogOn and 1 or 0)
    if fogOn then
        sendcentermsg("毒蛇山谷毒雾弥漫，持续 1200 秒，请备好解毒剂")
    else
        sendcentermsg("毒雾散去，山谷恢复安全")
    end
end

function onFogTick(actor)
    if getsysvar("POISON_FOG") ~= "1" then return end
    local antidote = checkitemw(actor, "解毒剂", 1)
    if antidote then
        takeitem(actor, "解毒剂", 1)
        sendmsg(actor, 0, "消耗解毒剂一枚，本次毒雾无碍")
        return
    end
    makeposion(actor, 0, 60, 20, 0)
end
setontimer(actor, 208, 60)
function ontimer208(actor)
    onFogTick(actor)
end