Turtle (mob spawner) killer v2.06

--how to use:
--Place a melee turtle (facing the block where the mobs will be)
--Place a pressure plate in front of turtle, so the falling mobs activate it
-- ENJOY THE SHOW

local chestDir = "dropUp"

local redstoneSignalSide = "none"
local per = peripheral.wrap("right")
local count = 0

--get redstoneSignalSide for further using // HEAVY OPTIMIZATION
while redstoneSignalSide=="none" do --wait for a correct redstone signal
    print("Waiting for a redstone signal...")
    os.pullEvent("redstone")
    if rs.getInput("top") then
        redstoneSignalSide = "top"
    elseif rs.getInput("front") then
        redstoneSignalSide = "front"
    elseif rs.getInput("left") then
        redstoneSignalSide = "left"
    elseif rs.getInput("right") then
        redstoneSignalSide = "right"
    elseif rs.getInput("back") then
        redstoneSignalSide = "back"
    elseif rs.getInput("bottom") then
        redstoneSignalSide = "bottom"
    else
        print("idk didnt find the redstone signal")
    end
    print("Redstone signal is coming from: ".. redstoneSignalSide)
end

function drop_all_items()
    for i = 1, 16 do
        if turtle.getItemCount(i)~=0 then
            turtle.select(i)
            turtle[chestDir]()
        end
    end

    turtle.select(1)
end

function attackWhileRedstone()
    while rs.getInput(redstoneSignalSide)==true do --check if mob (rs=TRUE) is in front
        if turtle.attack() then
            count = count + 1
            if count>=50 then
                drop_all_items()
                count = 0
            end
            sleep(.15)
        end
    end
end

function killndrop()
        while os.pullEvent("redstone") do --when redstone signal changes
            --print("Redstone event")
            attackWhileRedstone()
            sleep(.75)
            attackWhileRedstone()
            --print("Input = false")
        end
end

function keyInput()
    while true do
        local event, char = os.pullEvent("char")
        if char == "s" then
            print("Stopping!")
            break
        elseif char == "d" then
            print("Dropping items!")
            count = 0
            drop_all_items()
            count = 0
        end
    end
end

function sleepEvent()
    sleep(1); os.queueEvent("redstone") --activates the turtle after getting a redstone signal
    while true do
        sleep(10)
        os.queueEvent("redstone")
    end
end


print("Keys:")
print("S - Stop the turtle and exit")
print("D - Drop items urgently")
parallel.waitForAny(keyInput, killndrop, sleepEvent)

--by VADemon
--[[Changelog
v2.06
Removed debug messages
v2.05
Code completely stable, needs some refactoring though
v2.02:
Turtle attacking only on redstone event
v2.01:
Bug fixed, turtle didn't wait for redstone event to track the side of signal
v2.0:
Rewrite of code
]]