【进阶实战】捡取对比：新装备与身上的自动对比封装

local SLOTS = { ["武器"] = "Atk", ["护腕"] = "Def" }
local function compareOnPickup(actor, itemName, slot, newAtk)
    actor = getplayerbyname(actor)
    local attrKey = SLOTS[slot]
    if attrKey == nil then
        return
    end
    local curAtk = tonumber(getplayvar(actor, "HUMAN", "Cur_" .. attrKey)) or 0
    local diff = newAtk - curAtk
    if diff > 0 then
        sendmsg(actor, 1, itemName .. " 比身上装备攻击高 " .. diff .. "，可考虑更换。")
    elseif diff < 0 then
        sendmsg(actor, 1, itemName .. " 攻击低 " .. (0 - diff) .. "，留作备用。")
    else
        sendmsg(actor, 1, itemName .. " 与身上装备属性相同。")
    end
end

local function onPickup(actor, itemName, slot, newAtk)
    actor = getplayerbyname(actor)
    compareOnPickup(actor, itemName, slot, newAtk)
end