【进阶实战】NPC对话树：分支对话的配表驱动封装

local DIALOG = {
    [1] = { text = "少侠可曾听闻祖玛教主？", opts = {
        { t = "愿闻其详", next = 2 },
        { t = "告辞", next = 0 } } },
    [2] = { text = "它盘踞祖玛七层，宝物无数。", opts = {
        { t = "接下讨伐令", next = 3, give = 9001 },
        { t = "再问细节", next = 4 } } },
    [3] = { text = "好！接令吧。", opts = {} }
}
local function talk(actor, nodeId)
    local node = DIALOG[nodeId]
    if not node then
        return
    end
    sendmsg(actor, 1, node.text)
    for i, opt in ipairs(node.opts) do
        sendmsg(actor, 1, i .. ". " .. opt.t)
    end
    setplayvar(actor, 0, "DialogNode", nodeId, 0)
end

local function pickOption(actor, idx)
    local nodeId = tonumber(getplayvar(actor, 0, "DialogNode")) or 1
    local node = DIALOG[nodeId]
    local opt = node and node.opts[idx]
    if not opt then
        return
    end
    if opt.give == 9001 then
        giveitem(actor, "讨伐令", 1, 0, "接取讨伐")
    end
    talk(actor, opt.next)
end