--[[ Configuration ]]

    --[[ Temps en secondes entre chaque nouveau spawn ]]
        local delay = 5

    -- [[ Nombre d'exécution de spawn ( 0 = infini ) ]]
        local repetitions = 0

    --[[ Classe de l'entité à faire spawn ]]
        local entityClass = "gmod_button"

    -- [[ Point de spawn ( ne pas modifier 'use = false' )]]
        local pos = {
            [1] = {
                pos = Vector(0, 0, 0),
                use = false
            },
            [2] = {
                pos = Vector(1, 1, 1),
                use = false
            },
            [3] = {
                pos = Vector(2, 2, 2),
                use = false
            },
            [4] = {
                pos = Vector(3, 3, 3),
                use = false
            },
            [5] = {
                pos = Vector(4, 4, 4),
                use = false
            }
        }

--[[ Fin de la configuration ]]

local oldEnt

local function getSpawnPos()
    local posUtilisable = {}

    for _, data in ipairs( pos ) do
        if ( !data.use ) then
            table.insert(posUtilisable, data.pos)
        end
    end

    if ( #posUtilisable <= 0 ) then
        for _, data in ipairs( pos ) do
            data.use = false
        end
        return getSpawnPos()
    end

    local spawnPos = posUtilisable[math.Rand(1, #posUtilisable)]

    for _, data in ipairs( pos ) do
        if ( data.pos == spawnPos ) then
            date.use = true
        end
    end

    return spawnPos
end

timer.Create("RespawnMyEnt", delay, repetitions, function()
    local myEnt = ents.Create(entityClass)
    myEnt:SetPos(getSpawnPos())
    myEnt:Spawn()

    if ( IsValid( oldEnt ) ) then
        oldEnt:Remove()
    end

    oldEnt = myEnt
end )