FTB | Mobfarms computer

rednet.open("top")
local side = "back"
local int = 0
local name = "null"
local state = "false"

active =
{
    ["test"] = false,
    ["cow"] = false,
    ["wither"] = false,
    ["sheep"] = false,
    ["squid"] = false,
    ["ghast"] = false,
    ["blaze"] = false,
    ["creeper"] = false,
    ["witch"] = false,
    ["pigman"] = false,
    ["enderman"] = false,
    ["golem"] = false,
    ["blizz"] = false,
    ["zombie"] = false
}

redstone.setBundledOutput(side, 0)

function update()
    if int >= 0 then
        redstone.setBundledOutput(side, int)
    else
        int = 0
        print("ERROR://INT=MINUS")
    end
end

while true do
    id, cmd = rednet.receive()

    -- Sheep, white
    if cmd == "sheep on" then
        if active["sheep"] == false then
            int = int + 1
            active["sheep"] = true
            update()
        end
    elseif cmd == "sheep off" then
        if active["sheep"] == true then
            int = int - 1
            active["sheep"] = false
            update()
        end
    -- Wither skeletons, black
    elseif cmd == "wither on" then
        if active["wither"] == false then
            int = int + 32768
            active["wither"] = true
            update()
        end
    elseif cmd == "wither off" then
        if active["wither"] == true then
            int = int - 32768
            active["wither"] = false
            update()
        end
    -- Squid, blue
    elseif cmd == "squid on" then
        if active["squid"] == false then
            int = int + 2048
            active["squid"] = true
            update()
        end
    elseif cmd == "squid off" then
        if active["squid"] == true then
            int = int - 2048
            active["squid"] = false
            update()
        end
    -- Cow, brown
    elseif cmd == "cow on" then
        if active["cow"] == false then
            int = int + 4096
            active["cow"] = true
            update()
        end
    elseif cmd == "cow off" then
        if active["cow"] == true then
            int = int - 4096
            active["cow"] = false
            update()
        end
    -- TEST, yellow
    elseif cmd == "test on" then
        if active["test"] == false then
            int = int + 16
            active["test"] = true
            update()
        end
    elseif cmd == "test off" then
        if active["test"] == true then
            int = int - 16
            active["test"] = false
            update()
        end
    -- Ghast, light gray
    elseif cmd == "ghast on" then
        if active["ghast"] == false then
            int = int + 256
            active["ghast"] = true
            update()
        end
    elseif cmd == "ghast off" then
        if active["ghast"] == true then
            int = int - 256
            active["ghast"] = false
            update()
        end
    -- Blaze, red
    elseif cmd == "blaze on" then
        if active["blaze"] == false then
            int = int + 16384
            active["blaze"] = true
            update()
        end
    elseif cmd == "blaze off" then
        if active["blaze"] == true then
            int = int - 16384
            active["blaze"] = false
            update()
        end
    -- Creeper, green
    elseif cmd == "creeper on" then
        if active["creeper"] == false then
            int = int + 8192
            active["creeper"] = true
            update()
        end
    elseif cmd == "creeper off" then
        if active["creeper"] == true then
            int = int - 8192
            active["creeper"] = false
            update()
        end
    -- Witch, purple
    elseif cmd == "witch on" then
        if active["witch"] == false then
            int = int + 1024
            active["witch"] = true
            update()
        end
    elseif cmd == "witch off" then
        if active["witch"] == true then
            int = int - 1024
            active["witch"] = false
            update()
        end
    -- Pigman, orange
    elseif cmd == "pigman on" then
        if active["pigman"] == false then
            int = int + 2
            active["pigman"] = true
            update()
        end
    elseif cmd == "pigman off" then
        if active["pigman"] == true then
            int = int - 2
            active["pigman"] = false
            update()
        end
    -- Enderman, light blue
    elseif cmd == "enderman on" then
        if active["enderman"] == false then
            int = int + 8
            active["enderman"] = true
            update()
        end
    elseif cmd == "enderman off" then
        if active["enderman"] == true then
            int = int - 8
            active["enderman"] = false
            update()
        end
    -- Golem, gray
    elseif cmd == "golem on" then
        if active["golem"] == false then
            int = int + 128
            active["golem"] = true
            update()
        end
    elseif cmd == "golem off" then
        if active["golem"] == true then
            int = int - 128
            active["golem"] = false
            update()
        end
    -- Zombie, lime green
    elseif cmd == "zombie on" then
        if active["zombie"] == false then
            int = int + 32
            active["zombie"] = true
            update()
        end
    elseif cmd == "zombie off" then
        if active["zombie"] == true then
            int = int - 32
            active["zombie"] = false
            update()
        end
    -- Blizz, magenta
    elseif cmd == "blizz on" then
        if active["blizz"] == false then
            int = int + 4
            active["blizz"] = true
            update()
        end
    elseif cmd == "blizz off" then
        if active["blizz"] == true then
            int = int - 4
            active["blizz"] = false
            update()
        end
    end
end