【框架设计】组队Buff同步：队伍增益的状态同步框架

-- 组队Buff：施放与移除
local player = class(actor)
local function syncTeamBuff(player, memberList, memberCnt)
    local buffId = 10201
    local shouldHave = memberCnt >= 5
    for _, name in ipairs(memberList) do
        local mate = class(name)
        if mate then
            local has = getplayvar(mate, "HUMAN", "TeamBuffOn") == "1"
            if shouldHave and not has then
                addbuff(mate, buffId, 0, 0, mate)
                setplayvar(mate, "HUMAN", "TeamBuffOn", "1", true)
            elseif not shouldHave and has then
                setplayvar(mate, "HUMAN", "TeamBuffOn", "0", true)
                sendmsg(mate, 1, 0, "队伍加成已失效。")
            end
        end
    end
end

-- 状态同步：增量检测
local player = class(actor)
local function syncDelta(player, before, after)
    local added, removed = {}, {}
    for name, _ in pairs(after) do
        if not before[name] then added[#added + 1] = name end
    end
    for name, _ in pairs(before) do
        if not after[name] then removed[#removed + 1] = name end
    end
    for _, name in ipairs(added) do
        local mate = class(name)
        addbuff(mate, 10201, 0, 0, mate)
    end
    for _, name in ipairs(removed) do
        local mate = class(name)
        if mate then setplayvar(mate, "HUMAN", "TeamBuffOn", "0", true) end
    end
end