【网络通信】头顶信息：名字与称号的按需下发

---头顶信息的组包：视野内的按需下发
function HeadInfo.sync(actor)
    local player = class(actor)
    if not player then return end
    local viewers = View.of(actor)
    for _, watcher in pairs(viewers) do
        sendmsg(watcher, 1, HeadInfo.pack(actor))
    end
end

---信息的打包：名字、行会、称号三元组
function HeadInfo.pack(actor)
    local guild = getplayvar(actor, 2, "GuildId") or ""
    local title = getplayvar(actor, 2, "WornTitle") or ""
    local pk = tonumber(getplayvar(actor, 2, "PKValue")) or 0
    local color = pk >= 200 and "#FF3333" or "#FFFFFF"
    return table.concat({
        actor, guild, title, color,
    }, "|")
end

---变更的增量推送：换会与换称号
function HeadInfo.onGuildChange(actor, newGuild)
    setplayvar(actor, "HUMAN", "GuildId", newGuild, 1)
    -- 行会变更：向视野内推送单字段的增量
    local viewers = View.of(actor)
    for _, watcher in pairs(viewers) do
        sendmsg(watcher, 1, "GUILD|" .. actor .. "|" .. newGuild)
    end
end