【引擎触发】物品掉落：怪物死亡掉落表的引擎实现

local ZOMBIE_DROP = {
    { item = "金币", rate = 10000, min = 50, max = 200 },
    { item = "书页", rate = 800, min = 1, max = 1 },
    { item = "召唤骷髅", rate = 30, min = 1, max = 1 },
    { item = "强效金创药", rate = 1500, min = 1, max = 2 },
}
function QF.MonsterDrop(plr, monster)
    local drops = {}
    for _, entry in ipairs(ZOMBIE_DROP) do
        if math.random(1, 10000) <= entry.rate then
            local count = entry.min or 1
            if entry.max then
                count = math.random(entry.min, entry.max)
            end
            table.insert(drops, { item = entry.item, n = count })
        end
    end
    for _, d in ipairs(drops) do
        QF_DropGround(plr, monster.x, monster.y, d.item, d.n)
    end
    return drops
end

function GroundItem.expire(item)
    if os.time() - item.droppedAt > 60 then
        item.owner = nil
        item:ShowNameColor("#AAAAAA")
    end
    if os.time() - item.droppedAt > 300 then
        item:Remove()
    end
end