【Lua实战】屠夫委托经验：任务等级带与经验曲线的分段拟合

local NEED = { [25] = 80000, [30] = 150000, [35] = 260000, [40] = 420000 }
local function questExp(lv)
    local base = NEED[lv]
    if base == nil then
        local low = 25
        for k, _ in pairs(NEED) do
            if k <= lv and k > low then low = k end
        end
        base = NEED[low] or 80000
    end
    return math.floor(base * 0.12)
end

local function roundExp(lv, round)
    local base = questExp(lv)
    local decay = 1 - (math.max(0, round - 5)) * 0.2
    decay = math.max(0.4, decay)
    return math.floor(base * decay)
end