【高级技巧】随机流隔离：每系统独立的随机序列

local function createStream(seed)
    local state = seed % 2147483647
    if state <= 0 then
        state = state + 2147483646
    end
    return {
        next = function()
            state = (state * 16807) % 2147483647
            return state
        end,
        range = function(minV, maxV)
            state = (state * 16807) % 2147483647
            return minV + state % (maxV - minV + 1)
        end,
    }
end
local dropStream = createStream(20260924)
local wheelStream = createStream(888888)

local function rollDrop(actor)
    actor = getplayerbyname(actor)
    if dropStream.range(1, 5000) == 1 then
        giveitem(actor, "裁决之杖", 1, 1)
    end
end
local function spinWheel(actor)
    actor = getplayerbyname(actor)
    if wheelStream.range(1, 100) <= 5 then
        giveitem(actor, "祝福油", 1)
    end
end