【引擎触发】pickupitems：自动拾取的范围与过滤规则

---自动拾取的范围检测
local PICKUP_RANGE = 3
local PICKUP_FILTER = { gold = true, potion = true, equipment = false }
function pickupitems(actor, x, y)
    local drops = getDropItemsInRange(x, y, PICKUP_RANGE)
    for _, drop in ipairs(drops) do
        if PICKUP_FILTER[drop.category] and drop.owner == actor:GetID() then
            pickupSingle(drop)
        end
    end
end

function pickupSingle(drop)
    sendmsg(actor, 1, "拾取 " .. drop.name)
    SL:PlayAudio(7100)
    QF_RemoveGroundItem(drop.uid)
end

---拾取的过滤配置
function PickupFilter.configure(actor, filter)
    setplayvar(actor, "HUMAN", "pickup_filter", json2tbl.encode(filter), 1)
end

function PickupFilter.shouldPick(actor, drop)
    local cfg = getplayvar(actor, "HUMAN", "pickup_filter")
    local filter = cfg and json2tbl.decode(cfg) or DEFAULT_FILTER
    if filter.quality and drop.quality < filter.quality then return false end
    if filter.categories and not filter.categories[drop.category] then return false end
    return true
end