Turtle.lua

--GoldKart (c) GoldProgramming 2014
--Turtle Version 1.0
--Csstform

--CONFIG
--===================
--DEBUG MODE
debug = false
--TURTLE ID
tNum = 1
--AMOUNT OF RACING TURTLES
rNum = 1
--===================

--[[SETUP
=====================
Place one item in slot 9 and a different one in slot 10.
Place a block of what the road is made out of in slot 13.
Make sure that the turtle number matches the one on the PDA.
]]--

--Program initialization
term.clear()
term.setCursorPos(1, 1)
rednet.open("left")
redstone.setOutput("front", true)
rednet.host("turtle"..tostring(tNum),"GoldKartTurtles")
local exit = false

--this will send a command
function sendCommand(id, command)
    rednet.send(id, command)
    if debug == true then
        print("Sent "..tostring(command).." to "..tostring(id).."...")
    end
end

--This will recive a command
function recieveCommand()
    local senderId, message, distance = rednet.receive()
    if debug == true then
        print("Recived "..tostring(message).." from "..tostring(senderId).."...")
    end
    return message
end


--This will translate the rednet messaqge into a command
function translate(input)
    if input == "forward" then
        turtle.forward()
        if not redstone.getOutput("front") then
            redstone.setOutput("front", true)
        end
        if debug == true then
            print("Turtle moving forward...")
        end
    elseif input == "left" then
        turtle.turnLeft()
        if not redstone.getOutput("front") then
            redstone.setOutput("front", true)
        end
        if debug == true then
            print("Turtle turning left...")
        end
    elseif input == "right" then
        turtle.turnRight()
        if not redstone.getOutput("front") then
            redstone.setOutput("front", true)
        end
        if debug == true then
            print("Turtle turning right...")
        end
    elseif input == "back" then
        turtle.back()
        if not redstone.getOutput("front") then
            redstone.setOutput("front", true)
        end
        if debug == true then
            print("Turtle moving backwards...")
        end
    elseif input == "getItem" then
        turtle.select(1)
        turtle.suckDown(1)
        if not redstone.getOutput("front") then
            redstone.setOutput("front", true)
        end
        if debug == true then
            print("Turtle picking up item...")
        end
    elseif input == "useItem" then
        turtle.select(1)
        if turtle.compareTo(9) then
            redstone.setOutput("front", false)
            turtle.drop(1)
        end
        if turtle.compareTo(10) then
            target = math.random(1, rNum)
            sendCommand(target, "hit")
            turtle.drop(1)
        end
        if debug == true then
            print("Turtle using item...")
        end
    elseif input == "hit" then
        turtle.turnLeft()
        sleep(.1)
        turtle.turnLeft()
        sleep(.1)
        turtle.turnLeft()
        sleep(.1)
        turtle.turnLeft()
        if debug == true then
            print("Turtle has been hit...")
        end
    elseif input == "exit" then
        exit = true
    end
end

--Main program loop
while exit == false do
    local test = recieveCommand()
    translate(test)

    if not turtle.detectDown() then
        turtle.down()
    elseif turtle.detect() then
        turtle.select(13)
        if turtle.compare() then
            turtle.up()
        end
    end
end

--Closing code
term.clear()
term.setCursorPos(1, 1)
rednet.close("left")
redstone.setOutput("front", false)
os.shutdown()