gm_spawnmobs.lua

-- Utility
string.startswith = function(self, str) 
    return self:find('^' .. str) ~= nil
end

function split(inputstr, sep)
    if sep == nil then
        sep = "%s"
    end
    local t = {}
    for str in string.gmatch(inputstr, "([^" .. sep .. "]+)") do
        table.insert(t, str)
    end
    return t
end

local SpawnMobs = {
    defaultRadius = 2,
    defaultRespawnTime = 10, -- IN SECONDS! Emulator Default is 300 seconds
    tempStayTime = 5 -- IN SECONDS!
}

function SpawnMobs.OnCommand(event, player, command)
    if not player or player:GetGMRank() < 3 then
        return
    end
    if command:startswith("spawnmobs") then
        local args = split(command)
        if #args >= 3 then
            local entry     = tonumber(args[2])
            local count     = tonumber(args[3])
            local gridSize  = tonumber(args[4]) or 1
            local position  = tostring(args[5]) or 'right'
            local save      = tostring(args[6]) or 'false'
            local o = player:GetO() - math.pi / 2
            local responseString = "You have spawned |cffffffff[%i]|r creatures with entry |cffffffff[%i]|r and name |cffffffff[%s]|r."
            if position == "left" then
                o = player:GetO() + math.pi / 2
            end
            local doSave = false
            if save == "true" then
                doSave = true
                responseString = responseString .. " The creatures are |cffff0000saved|r to the database."
            else
                responseString = responseString .. string.format(" The creatures will disappear after |cffffffff[%i]|r seconds.", SpawnMobs.tempStayTime)
            end

            local g = 0
            local i = 0
            local exampleName = nil
            repeat
                local x, y, z, newO = GetPositionRelative(player, o, SpawnMobs.defaultRadius * i, true)
                repeat
                    spawnedCreature = PerformIngameSpawn(1, entry, player:GetMapId(), player:GetInstanceId(), x, y, z, newO, doSave, SpawnMobs.tempStayTime * 1000)
                    x, y, z, newO = GetPositionRelative(spawnedCreature, spawnedCreature:GetO() - math.pi, SpawnMobs.defaultRadius, true)
                    if doSave then
                        spawnedCreature:SetRespawnDelay(SpawnMobs.defaultRespawnTime)
                        spawnedCreature:SaveToDB()
                    end
                    if exampleName == nil then
                        exampleName = spawnedCreature:GetName()
                    end
                    g = g + 1
                until g == gridSize
                i = i + 1
                g = 0
            until i == count
            player:SendBroadcastMessage(string.format(responseString, count*gridSize, entry, exampleName))
        elseif #args < 3 then
            player:SendBroadcastMessage('### Usage: .spawnmobs #entryid #count <rows> <position: left/right> <save: true/false>')
        end
        return false
    end
end


RegisterPlayerEvent(42, SpawnMobs.OnCommand)