【安全加密】异常交易资金图谱：交易关系边上报与环形检测方案

local edges = {}
local function reportEdge(from, to, gold)
    local player = class(actor)
    edges[player:GetName()] = edges[player:GetName()] or {}
    table.insert(edges[player:GetName()], { to = to, gold = gold, t = os.time() })
end

local visited = {}
local function detectRing(start, cur, depth)
    if depth > 6 then return false end
    if cur == start and depth > 0 then return true end
    for _, e in ipairs(edges[cur] or {}) do
        if visited[e.to] ~= true then
            visited[e.to] = true
            if detectRing(start, e.to, depth + 1) then return true end
        end
    end
    return false
end