【Lua实战】强化祝福油：概率叠加与衰减保底的实现细节

function tryStrengthen(actor, curLv)
    local player = class(actor)
    local bless = tonumber(getplayvar(actor, 2, "BLESS_VAL") or "0")
    local rate = 60 - math.min(30, (usedOilThisRound(actor) - 1) * 10)
    if bless >= 100 or math.random(1, 100) <= rate then
        setplayvar(actor, "HUMAN", "BLESS_VAL", 0, 1)
        addskill(actor, 0)
        sendmsg(actor, 0, "强化成功！当前" .. curLv + 1 .. "级" .. (bless >= 100 and "（祝福必成）" or ""))
        return true
    end
    setplayvar(actor, "HUMAN", "BLESS_VAL", bless + 5, 1)
    sendmsg(actor, 0, "强化失败，祝福值" .. bless + 5 .. "/100")
    return false
end

local function usedOilThisRound(actor)
    local player = class(actor)
    local today = os.date("%Y%m%d")
    local key = "OIL_" .. today
    local cnt = tonumber(getplayvar(actor, 2, key) or "0") + 1
    setplayvar(actor, "HUMAN", key, cnt, 1)
    return cnt
end