【玩法设计】挖矿玩法：安全区与富矿分布的资源节奏设计

local MINES = {
    { area = "biqueshan", grade = "低",  w = { 60, 30, 10 }, refresh = 3600 },
    { area = "dushefu",   grade = "中",  w = { 30, 45, 25 }, refresh = 5400 },
    { area = "shenyuan",  grade = "高",  w = { 10, 40, 50 }, refresh = 7200 },
}
local function rollOre(w)
    local r, acc = math.random(1, 100), 0
    for i, p in ipairs(w) do
        acc = acc + p
        if r <= acc then return i end
    end
    return 1
end

function mineDig(actor, areaKey)
    local player = class(actor)
    local sp = tonumber(getplayvar(actor, 2, "VITALITY") or "0")
    if sp < 10 then
        sendmsg(actor, 0, "体力不足10点，打坐可恢复")
        return
    end
    setplayvar(actor, "HUMAN", "VITALITY", sp - 10, 1)
    local cfg = MINES[areaKey]
    local grade = rollOre(cfg.w)
    giveitem(actor, "黑铁矿石纯度" .. (grade * 5), 1)
end