7 posts
Location
USA
Posted 30 December 2012 - 04:45 PM
Hi there. I seem to be having an issue assigning multiple variables using the read() function. For some reason, I seem to get the error "progtunnel:140: attempt to concatenate sting and nil". I'd really appreaciate if someone could check out my code and help me figure out what i did wrong. And if you're wondering, I'm making a 3x3 tunnel bore with user input for the depth that it digs and I'm slowly figuring out how to auto-check the inventory for full stacks, make it return to the chest it placed, and return to it's last dig cycle and continue digging. So far I'm only about 30% through all that… Oh well. Anyways, the help would be much appreciated, so here's the code I've got so far. I marked the issue lines and have sectioned off all the function defining and chunks and such what.
--Clearing the Screen--
term.clear()
term.setCursorPos(1,1)
print[["3x3 Tunnel Turtle v1.0"
=======================================
]]
--Initial Coordinates--
rednet.open("right")
xcor,ycor,zcor=gps.locate(5)
if xcor~=nil then
print("Starting Coords:")
print("x = "..xcor)
print("y = "..ycor)
print("z = "..zcor)
print(" ")
else
print("GPS System Offline")
error()
end
--Defining checkInv() Function--
local function checkInv()
x=0
for i=1,16 do
turtle.select(i)
x=turtle.getItemCount(i)
if x==64 then
print("Full Slot. Returning to Chest")
--Space for Return Program--
break
else
end
end
end
--User Input for Tunnel Length--
term.write("Length of Tunnel? ")
l,lr=read() --Line that's supposed to define lr to find Distance Traveled--
print(" ")
print("Digging for "..l.. " Cycles.")
print(" ")
--Placment of Chest for Depositing--
turtle.turnLeft()
if turtle.detect()==true then
turtle.select(2)
turtle.dig()
turtle.select(1)
if turtle.getItemCount(1)==1 then
print("Placing Chest.")
turtle.place()
else
print("No Storage Found. Returning.")
error()
end
else
if turtle.getItemCount(1)==1 then
print("Placing Chest.")
turtle.place()
else
print("No Storage Found. Returning.")
error()
end
end
turtle.turnRight()
--Digging Loop and Distance Counter for Returning--
for i=1,l do
if turtle.detect()==true then
turtle.dig()
turtle.forward()
else
turtle.forward()
end
turtle.turnLeft()
for x=1,2 do
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
sleep(1)
turtle.turnLeft()
else
turtle.turnLeft()
sleep(1)
turtle.turnLeft()
end
if turtle.detect()==true then
turtle.dig()
turtle.turnRight()
sleep(1)
turtle.turnRight()
else
turtle.turnRight()
sleep(1)
turtle.turnRight()
end
if turtle.detectUp()==true then
turtle.digUp()
turtle.up()
else
turtle.up()
end
end
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
sleep(1)
turtle.turnLeft()
else
turtle.turnLeft()
sleep(1)
turtle.turnLeft()
end
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
else
turtle.turnLeft()
end
turtle.down()
sleep(1)
turtle.down()
checkInv()
turtle.select(1)
print("Distance Traveled: "..lr) --Line with the Issue--
end
95 posts
Location
Somewhere near the local computer store?
Posted 30 December 2012 - 05:01 PM
You can't assign multiple vars to read(). In your case just put lr = read() and put l = lr after the read function
7 posts
Location
USA
Posted 30 December 2012 - 05:04 PM
Ok thanks! I'll give it a try and see how it goes.
2088 posts
Location
South Africa
Posted 30 December 2012 - 09:52 PM
I see you eventually the variable 'l' in a for loop, so you will need to convert it into a number to achieve this successfully,
tonumber(l)
But yeah, the easiest way to set multiple variables as one read() is set the first value to another, etc.
7 posts
Location
USA
Posted 31 December 2012 - 03:10 AM
I fixed the code :)/> Here's what i've got so far. Now i'm having an issue with dropping the items off into a chest… It seems to not wanna detect the inventory and gives a turtle error.
Spoiler
--Clearing the Screen--
term.clear()
term.setCursorPos(1,1)
print[["3x3 Tunnel Turtle v1.0"
=======================================
]]
--Initial Coordinates--
rednet.open("right")
xcor,ycor,zcor=gps.locate(5)
if xcor~=nil then
print("Starting Coords:")
print("x = "..xcor)
print("y = "..ycor)
print("z = "..zcor)
print(" ")
else
print("GPS System Offline")
error()
end
--User Input for Tunnel Length--
term.write("Length of Tunnel? ")
local l=read()
local dt=0
local nd=0
local dr=0
print(" ")
print("Digging for "..l.. " Cycles.")
print(" ")
--Table for Variables in the Whole Program--
local Vars={dt, nd, dr, l}
--dt=Distance Traveled; Used in: digLoop()--
--nd=New Distance; Used in: contDigLoop()--
--dr=Distance Remaning; Used in: contDigLoop()--
--l=Length of Tunnel; Used in: digLoop()--
--Placment of Chest for Depositing--
turtle.turnLeft()
if turtle.detect()==true then
turtle.select(2)
turtle.dig()
turtle.select(1)
if turtle.getItemCount(1)==1 then
print("Placing Chest.")
turtle.place()
else
print("No Storage Found. Returning.")
error()
end
else
if turtle.getItemCount(1)==1 then
print("Placing Chest.")
turtle.place()
else
print("No Storage Found. Returning.")
error()
end
end
turtle.turnRight()
--Defining returnSystem() Function--
local function dropOff()
Vars[1]=dt
Vars[4]=l
go=dt+1
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
for i=1,go do
turtle.forward()
end
turtle.turnRight()
if turtle.detect()==true then
for x=1,16 do
turtle.select(i)
turtle.drop()
end
else
print("No Chest Detected. Error.")
error()
end
turtle.turnRight()
for i=1,go do
turtle.forward()
sleep(0.5)
end
contDigLoop()
end
local function checkInv()
for i=1,16 do
turtle.select(i)
x=turtle.getItemCount(i)
if x==64 then
turtle.select(1)
print("Full Slot. Returning to Chest")
return true
else
end
end
turtle.select(1)
end
local function returnSystem()
if checkInv()==true then
dropOff()
end
end
--Digging Loop Function and Distance Counter for dropOff()--
local function digLoop()
Vars[4]=l
for i=1,l do
if turtle.detect()==true then
turtle.dig()
turtle.forward()
else
turtle.forward()
end
turtle.turnLeft()
for x=1,2 do
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
else
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
end
if turtle.detect()==true then
turtle.dig()
turtle.turnRight()
sleep(0.5)
turtle.turnRight()
else
turtle.turnRight()
sleep(0.5)
turtle.turnRight()
end
if turtle.detectUp()==true then
turtle.digUp()
turtle.up()
else
turtle.up()
end
end
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
else
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
end
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
else
turtle.turnLeft()
end
turtle.down()
sleep(0.5)
turtle.down()
returnSystem()
turtle.select(1)
Vars[1]=dt
dt=(l/l)+dt
print("Distance Traveled: "..dt)
if table.insert(Vars, 1, dt)~=true then
table.remove(Vars, 1, dt)
table.insert(Vars, 1, dt)
else
table.insert(Vars, 1, dt)
end
end
end
--Defining contDigLoop()--
local function contDigLoop()
Vars[1]=dt
Vars[4]=l
nd=l-dt
if table.insert(Vars, 2, nd)~=true then
table.remove(Vars, 2, nd)
table.insert(Vars, 2, nd)
else
table.insert(Vars, 2, nd)
end
for i=1,nd do
if turtle.detect()==true then
turtle.dig()
turtle.forward()
else
turtle.forward()
end
turtle.turnLeft()
for x=1,2 do
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
else
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
end
if turtle.detect()==true then
turtle.dig()
turtle.turnRight()
sleep(0.5)
turtle.turnRight()
else
turtle.turnRight()
sleep(0.5)
turtle.turnRight()
end
if turtle.detectUp()==true then
turtle.digUp()
turtle.up()
else
turtle.up()
end
end
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
else
turtle.turnLeft()
sleep(0.5)
turtle.turnLeft()
end
if turtle.detect()==true then
turtle.dig()
turtle.turnLeft()
else
turtle.turnLeft()
end
turtle.down()
sleep(0.5)
turtle.down()
returnSystem()
turtle.select(1)
Vars[3]=dr
Vars[1]=dt
Vars[2]=nd
dr=((nd/nd)+1)+dt
print("Distance Traveled: "..dr)
if table.insert(Vars, 3, dr) ~=true then
table.remove(Vars, 3, dr)
table.insert(Vars, 3, dr)
else
table.insert(Vars, 3, dr)
end
end
end
digLoop()
2088 posts
Location
South Africa
Posted 31 December 2012 - 05:28 AM
Can you tell us what the error is exactly, with the line number too. Also put on pastebin so we do not have to count the lines to get to the right line