STS

--STS

--load wireless modem
function loadWireless()
    modem = peripheral.wrap("left")
    wirelessMode = true

    if( modem == nil) then
        wirelessMode = false
        return false
    else
        return true
    end
end


local currentX, currentY, currentZ = 0
local currentFace, startingFace = 0
pcId = 0
--face: 0 South; 1 East; 2 North; 3 West

function sendMsg(msg, channel)
    if not wirelessMode then
        print("Not wireless")
    end


    modem.transmit(channel, pcId, msg)

end

function getStartingFace()
    return startingFace
end

function initLocation(x, y, z, face, pc)
    currentX = x
    currentY = y
    currentZ = z
    currentFace = face
    pcId = tonumber(pc)
end

function getX()
    return currentX
end

function getY()
    return currentY
end

function getZ()
    return currentZ
end

function getFace()
    return currentFace
end

function down()
    if turtle.down() then
        currentY = currentY - 1
        return true
    else
        return false
    end
end

function up()
    turtle.up()
    currentY = currentY + 1
end


function forward()
    while not turtle.forward() do
        turtle.dig()
    end
    --face: 0 South; 1 East; 2 North; 3 West
    if (currentFace == 0) then
        currentZ = currentZ + 1
    elseif currentFace == 1 then
        currentX = currentX + 1
    elseif currentFace == 2 then
        currentZ = currentZ - 1
    else
        currentX = currentX - 1
    end

end

function turnLeft()
    turtle.turnLeft()
    if(currentFace == 3) then
        currentFace = 0
    else
        currentFace = currentFace + 1
    end
end

function turnRight()
    turtle.turnRight()
    if(currentFace == 0) then
        currentFace = 3
    else
        currentFace = currentFace - 1
    end

end