帮派标记：成员位置共享同显

-- 错误：喊话报坐标，看完就散
function callPoint(x, y)
    chatText = "集合 " .. x .. "," .. y
end

local marks = {}
local function shareMark(x, y)
    marks[#marks + 1] = {x = x, y = y,
        at = os.clock()}
    refreshMini()
end
local function refreshMini()
    local now = os.clock()
    for _, m in ipairs(marks) do
        drawMark(m.x, m.y, now - m.at < 120)
    end
end