【后端接口】药品冷却分组：共享冷却与独立冷却的接口管理

local CD_GROUP = {
    hp = { items = { "金创药", "强效金创药" }, cd = 5 },
    mp = { items = { "魔法药", "强效魔法药" }, cd = 5 },
    sp = { items = { "太阳水" }, cd = 3 },
}
local function groupOf(name)
    for g, cfg in pairs(CD_GROUP) do
        for _, n in ipairs(cfg.items) do
            if n == name then return g, cfg.cd end
        end
    end
    return nil, 0
end
function useDrug(actor, name)
    local player = class(actor)
    local g, cd = groupOf(name)
    if g == nil then return end
    local last = tonumber(getplayvar(actor, 2, "DRUG_CD_" .. g) or "0")
    local wait = cd - (os.time() - last)
    if wait > 0 then
        sendmsg(actor, 0, "药效发挥作用中，" .. wait .. "秒后再试")
        return
    end
    setplayvar(actor, "HUMAN", "DRUG_CD_" .. g, os.time(), 1)
end

function grantSpecialDrug(actor)
    local player = class(actor)
    giveitem(actor, "太阳水", 3)
    setplayvar(actor, "HUMAN", "SP_UNLOCK", 1, 1)
    sendmsg(actor, 0, "获得太阳水3瓶，独立冷却3秒")
end