【框架设计】组队匹配：职业互补与等级区间

local TEAM_SIZE, LV_SPAN = 3, 15
function TeamMatch.enqueue(plr)
    plr.matchAt = os.time()
    matchQueue[#matchQueue + 1] = plr.id
    TeamMatch.tryForm()
end

function TeamMatch.tryForm()
    for i = 1, #matchQueue - TEAM_SIZE + 1 do
        local trio = { table.unpack(matchQueue, i, i + TEAM_SIZE - 1) }
        if TeamMatch.compatible(trio) then
            TeamMatch.form(trio)
            return
        end
    end
end

function TeamMatch.compatible(ids)
    local jobs, minLv, maxLv = {}, 1e9, 0
    for _, pid in ipairs(ids) do
        local p = QF_GetPlayer(pid)
        if jobs[p.job] then return false end
        jobs[p.job] = true
        minLv = math.min(minLv, p.level)
        maxLv = math.max(maxLv, p.level)
    end
    return maxLv - minLv <= LV_SPAN
end