【进阶实战】集字活动：字符道具的收集与兑换封装

local WORDS = { "祖", "玛", "传", "奇" }
local function onMonDrop(actor)
    if math.random(1, 20) ~= 1 then
        return
    end
    local idx = math.random(1, #WORDS)
    local weight = { 60, 30, 8, 2 }
    local pick = 1
    local roll = math.random(1, 100)
    local acc = 0
    for i, w in ipairs(weight) do
        acc = acc + w
        if roll <= acc then
            pick = i
            break
        end
    end
    giveitem(actor, WORDS[pick], 1, 0, "集字掉落")
end

local function exchange(actor)
    for _, w in ipairs(WORDS) do
        local cnt = tonumber(getplayvar(actor, 0, "Word_" .. w)) or 0
        if cnt < 1 then
            sendmsg(actor, 1, "还缺一个「" .. w .. "」字。")
            return
        end
    end
    for _, w in ipairs(WORDS) do
        takeitem(actor, w, 1, 0, "集字兑换")
    end
    giveitem(actor, "屠龙宝刀碎片", 1, 0, "集字奖励")
    sendmsg(actor, 1, "集齐「祖玛传奇」，兑换成功。")
end