Issue with loop and nested if statements

Question

motor = peripheral.wrap("right")

repeat 


RPM = motor.getSpeed()
print("current rpm is ", RPM, "RPM. What RPM do you need?")
setrpm = tonumber(io.read())
if type(setrpm) == "number"
    then
        motor.setSpeed(setrpm)
        goto contine

    else 
        print("Must be a number between -256 and 256")
        print("current rpm is ", RPM, "RPM. What RPM do you need?")
        setrpm = tonumber(io.read())
        end
::continue::

rpm = motor.getSpeed()
su =  ( rpm * 16)
fe = motor.getEnergyConsumption()
print("You have set speed " , rpm, " RPM")
print("Current stress cap is now ", su, "SU")
print("Power Consumption is now ", fe, "FE/t")

until( fe > 100 )
end

Expected behavor loop until fe=100 or more

current behavor motor.lua:12 '=' expected near 'continue'

writing a loop of code in computercraft to ask what rpm a block needs to spin at, expected behavor is to keep looping the code endlessly till the FE>100 (for the block its looking at its imposible)

you have an extra end, and you typoed continue in the goto statement, also most importantly that goto does absolutely nothing and using goto in general is a code smell. — Nifim
– Nifim, Commented Nov 2, 2021 at 19:17
It looks like you are using Lua 5.1, there is no goto operator in this Lua version. — Egor Skriptunoff
– Egor Skriptunoff, Commented Nov 2, 2021 at 19:21

Piglet · Accepted Answer · 2021-11-02 20:38:38Z

1

Computercraft uses Lua 5.1. goto was introduced in Lua 5.2 so you cannot use it in your script.

That aside there is no point in using it like that.

if condition then
  -- block A
else
  -- block B
end

After executing block A or B Lua will automatically continue after the end. You don't have to explicitly tell Lua to do that.

In a repeat until statement there is no end after the condition. The correct syntax is:

repeat block until exp

Befor posting your problems here, at least check for typos. contine is not the label you intended to go to.

Please refer to https://www.lua.org/manual/5.1/manual.html

answered Nov 2, 2021 at 20:38

Piglet

29.3k3 gold badges31 silver badges51 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Issue with loop and nested if statements

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related