【进阶实战】双倍仲裁：多活动同开的倍率上限设计

local boosters = {}
local CAP = 300
local function registerBoost(name, rate)
    boosters[name] = rate
end
local function unregisterBoost(name)
    boosters[name] = nil
end
local function arbitrate()
    local total = 100
    for _, rate in pairs(boosters) do
        total = total + rate
    end
    if total > CAP then
        total = CAP
    end
    return total
end

local function grantExp(actor, baseExp)
    actor = getplayerbyname(actor)
    local rate = arbitrate()
    local finalExp = math.floor(baseExp * rate / 100)
    giveitem(actor, "经验丹", math.max(1, math.floor(finalExp / 1000)))
    sendmsg(actor, 1, "获得经验 " .. finalExp .. "（倍率 " .. rate .. "%）。")
end